”14..
`33% UNITED STATES PATENT AND TRADEMARK OFFICE
`E
`
`‘
`
`‘
`I
`
`
`
`UNITED STATES DEPARTMEVT OF COMMERCE
`United States Patent and Trademark Office
`AddIESS. COMMISSIONER FOR PATENTS
`1’0 Box 1450
`Alexandria) VIJgIIIa 22313-1450
`VWVVZUSpf/J.gov
`FIRST NAMED APPLICANT
`
`ATTY. DOCKET NO./TITLE
`
`APPLICATION NUMBER
`
`FILING OR 371(Cf) DATE
`
`61/677,346
`
`07/30/2012
`
`AUYEUNG
`
`DAVID SIUCHEONG
`
`UVLD-31391
`CONFIRMATION NO. 3248
`
`25883
`HOWISON & ARNOTT, L.L.P
`PO. BOX 741715
`DALLAS, TX 75374-1715
`
`MISCELLANEOUS NOTICE
`
`||||l|||||||||||||||||IIILIIIIH||||||||||||||||||||fl||||j||l|l|l|||||l|l||||||||||||||||
`0000000688 9 50
`Date Mailed: 06/06/2014
`
`A communication which cannot be delivered in electronic form has been mailed to the applicant.
`
`page 1 of 1
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`Page 1 of 44
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`SAMSUNG EXHIBIT 1028
`
`Page 1 of 44
`
`SAMSUNG EXHIBIT 1028
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`

`

`
`
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`UNITED STATES DEPARTMENT OF COMMERCE
`United States Patent. and Trademark Office
`Addams: COMMISSIONER FOR PATENTS
`P.O. Box 1450
`Alexandria, Virginia 22313—1450
`www.uspto.gov
`
`Doc Code: N572
`
`\
`
`APPLICATION NUMBER
`
`FILING DATE
`
`]
`6 /677,346
`
`‘
`
`07/30/2012
`
`FIRST NAMED APPLICANT
`DAVID SIUCHEONG
`AUYEUNG
`
`A'I'I‘Y. DOCKET NO./TITLE
`
`-
`UVLD 31391
`
`25883
`HOWISON & ARNOTT, L.L.P
`PO. BOX 741715
`
`DALLAS, TX 75374—1 715
`
`CC: SLATER & MATSIL, L.L.P.
`17950 PRESTON RD, SUITE 1000
`DALLAS, TX 75252-5793
`
`CONFIRMATION NO. 3248
`1 1111III III1111III“ 111 1111111 1111111 11111111111111111111 III! 111 IIIIII!
`
`
`-ocoooooooeaa49450‘
`
`Date Mailed: 06/06/2014
`
`DENIAL OF REQUEST FOR POWER OF ATTORNEY
`
`The request for Power of Attorney filed 05/30/2014 is acknowledged. However, the request cannot be
`granted at this time for the reason stated below.
`
`:1 The Power of Attorney you provided did not comply with the new Power of Attorney rules that became
`effective on June 25, 2004. See 37 CFR 1.32.
`
`CI The revocation is not signed by the applicant, the assignee of the entire interest, or one particular
`principal attorney having the authority to revoke.
`
`JZ/The Power of Attorney is from an assignee and the Certificate required by 37 CFR 3.73(b) has not been
`
`‘
`
`received.
`
`CI The person signing for the assignee has omitted their empowerment to sign on behalf of the assignee.
`
`CI The inventor(s) is without authority to appoint attorneys since the assignee has intervened as provided
`by 37 CFR 3.71.
`-
`
`, a co—lnventor in this application, has been omitted.
`CI The signature(s) of
`The Power of Attorney will be entered upon receipt of confirmation signed by said co-inventor(s).
`
`
`
`CI The person(s) appointed in the Power of Attorney is not registered to practice before the US. Patent and
`Trademark Office.
`
`Questions relating to this Notice should be directedto the Application Assistance Unit.
`
`Officg ofData Management, Application Assistance Unit (571) 272-4000, or (571) 272—4200, or 1-888-786-0101
`
`67
`
`.
`
`Page 2 of 44
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`Page 2 of 44
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`Doc Code: PA,.
`
`PTO/AlA/SZA (07-13)
`Approved for use through 11/30/2014. OMB 0651-0051
`Document Description: Power Of Attorney
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
`
`TRANSMITTAL FOR POWER OF ATTORNEY TO ONE OR MORE
`
`REGISTERED PRACTITIONERS
`
`NOTE: This form is to be submitted with the Power of Attorney by Applicant form (PTO/AIA/BZB) to identify the application to which the
`Power of Attorney is directed, in accordance with 37 CFR 1.5, unless the application number and filing date are identified in the Power of
`Attorney by Applicant form.
`If neither form PTO/AIA/82A nor form PTO/AIA82B identifies the application to which the Power of Attorney is
`directed, the Power of Attorney will not be recognized in the application.
`
`First Named inventor
`
`David Siucheong Auyeung
`
`Heat Sink For LED Light Source
`
`
`
`Attorney Docket Number _V|-002P
`
`SIGNATURE of A ulicant or Patent Practitioner
`
`/Srinivasan Chakravarthi/
`
`-5/30/2014
`
`Name
`
`Srinivasan Chakravarthi
`
`Registration
`Number
`
`Title (if Applicant is a
`juristic entity)
`
`NOTE: This form must be signed in accordance with 37 CFR 1. 33. See 37 CFR 1 4(d))for signature requirements and certifications. if
`more than one applicant use muitiple forms.
`D *Total of
`forms are submitted.
`
`This collection of information is required by 37 CFR 1.131, 1.32, and 1.33. The information is required to obtain or retain a benefit by
`the public which is to tile (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C, 122 and 37 CFR
`1.11 and 1.14. This collection is estimated to take 3 minutes to complete, including gathering, preparing, and submitting the compieted
`application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require
`to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and
`Trademark Office, U.S. Department of Commerce, PO. Box 1450, Alexandria. VA 22313—1450. DO NOT SEND FEES OR
`COMPLETED FORMS TO THiS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
`
`If you need assistance in completing the form, call 1-800-PTO-9199 and select option 2.
`
`Page 3 of 44
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`Page 3 of 44
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`

`DOC Code: PA»
`Document Description: Power Of Attorney
`
`PTO/AiA/ezs (07-13)
`Approved for use through 11/30/2014. OMB 0651-0051
`U.S. Patent and Trademark Office; US. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995. no persons are required to respond to a collection of information unless it displays a valid OMB control number
`
`POWER OF ATTORNEY BY APPLICANT
`
`Application Number
`
`Filing Date
`
`
`
`l hereby revoke all previous powers of attorney given in the application identified in either the attached transmittal letter or
`the boxes below.
`
`
`
`
`
`
`
`
`
`B The address associated with Customer Number: I
`
`OR
`F
`
`I
`Slater & Matsrl, L.L.P.
`
`m_—
`—_
`ethane —m_
`
`(Note: The boxes above may be left blank if information is provided on form PTO/AlA/82A.)
`I hereby appoint the Patent Practitioner(s) associated with the following Customer Number as my/our attomey(s) or agent(s)._and
`to transact all business in the United States Patent and Trademark Office connected therewith for the application referenced In
`the attached transmittal letter (form PTO/AlA/82A) or identified above:
`25962
`OR
`El l hereby appoint Practitioner(s) named in the attached list (form PTO/AlA/820) as mylour attomey(s) or agent(s), and to transact
`all business in the United States Patent and Trademark Office connected therewith for the patent application referenced in the
`attached transmittal letter (form PTO/AlA/82A) or identified above. (Note: Complete form PTO/AlA/BZC.)
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` Please recognize or change the correspondence address for the application identified in the attached transmittal
`
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`letter or the boxes above to:
`The address associated with the above-mentioned Customer Number
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`
`OR
`|
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`
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`
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`
`
`
`
`
`I am the Applicant (it the Applicant is a juristic entity, list the Applicant name in the box):
`
`Ultravision Holdings, LLC
`E] Inventor or Joint inventor (title not required below)
`[3 Legal Representative of a Deceased or Legally Incapacitated Inventor (title not required below)
`
`NOTE: Signature - This form must be signe: by the applicant in accordance with 37 CFR 1.33. See 37 CFR 1.4 for signature requirements
`and certifications. if more than one applicant, use multiple forms.
`DTotal of
`1
`forms are submitted.
`This collection of information is required by 37 CFR 1.131, 1.32, and 1.33. The information is required to obtain or retain a benefit by the public Which is to file (and by the
`USPTO to process) an application. Confidentiality is govemed by 35 U.S.C. 122 and 37 CFR 1.1 1 and 1.14. This collection is estimated to take 3 mlnutes to complete.
`including gathering. preparing. and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount
`of time you require to ccmpiete this form and/or suggestions for reducing this burden. should be sent to the Chief information Officer. U.S. Patent and Trademark Oflice. US.
`Department of Commerce. PO. Box 1450. Alexandria. VA 22313-1450. DO NOT SEND FEES 0R COMPLETED FORMS TO THIS ADDRESS. SEND To: Commissioner
`for Patents, PO. Box 1450, Melamine, VA 22313-1450.
`If you need assistance in completing the form, call 1-800-PTO<9199 and select option 2.
`
`
`Assignee or Person to Whom the Inventor is Under an Obligation to Assign (provide signers title if applicant is a juristic entity)
`
`L—J Person Who Otherwise Shows Sufficient Proprietary lnterest (e.g.. a petition under 37 CFR 1.46(b)(2) was granted in the
`a- clication or is concurrent! bein- filed with this document
`« rovide si -ner’s title if a - licant is a 'un’stic ent'
`— 5.6..TUREoprpucampaiem
`
`The undersigned (whose title is suppl' ~ d Mn - 5,5) act on behalf of the applicant (e.g., where the applicant is a jun'stic entity).
`
`
`“WHAT-.{i’imflf— Date (Optional)—
`
`m—‘r—
`
`
`
`
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`
`Page 4 of 44
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`Page 4 of 44
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`

`

`Electronic Acknowledgement Receipt
`
`
`
`Application Number: 61677346
`
`International Application Number:
`
`Confirmation Number:
`
`3248
`
`Title of Invention:
`
`HEAT SINK FOR LED LIGHT SOURCE
`
`
`
`——
`
`
`
`Receipt Date: 30-MAY-2014
`
`Filing Date:
`
`30—JUL—201 2
`
`Payment information:
`
`437095
`
`Power of Attorney
`
`UVI-OOZPiPOApdf
`
`adbe84b832323336734ad39902b359ce3d
`
`File Size(Bytes)/
`.
`.
`.
`Document
`
`Number
`Document Descrlptlon
`Flle Name
`Message Digest
`Part /.zip (ifappl.)
`806534
`
`Warnings:
`Information:
`
`Page 5 of 44
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`Page 5 of 44
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`

`
`
`Total Files Size (in bytes) 806534
`
`This Acknowledgement Receipt evidences receipt on the noted date by the USPTO of the indicated documents,
`characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a
`Post Card, as described in MPEP 503.
`
`New Applications Under 35 U.S.C. 111
`If a new application is being filed and the application includes the necessary components for a filing date (see 37 CFR
`1.53(b)—(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shown on this
`Acknowledgement Receipt will establish the filing date of the application.
`
`National Stage of an International Application under 35 U.S.C. 371
`If a timely submission to enter the national stage of an international application is compliant with the conditions of 35
`U.S.C. 371 and other applicable requirements a Form PCT/D0/EO/903 indicating acceptance of the application as a
`national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
`
`New International Application Filed with the USPTO as a Receiving Office
`If a new international application is being filed and the international application includes the necessary components for
`an international filing date (see PCT Article 11 and MPEP 1810), a Notification of the International Application Number
`and of the International Filing Date (Form PCT/RO/105) will be issued in due course, subject to prescriptions concerning
`national security, and the date shown on this Acknowledgement Receipt will establish the international filing date of
`the application.
`
`
`Page 6 of 44
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`Page 6 of 44
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`

`vWWtzuspt/J.gov
`
`UNITED STATES DEPARTMENT OF COMMERCE
`United States Patent and Trademark Office
`Address. COMMISSIONER FOR PATENTS
`1’ (.1 Box 1450
`Alexandria, VIJgIIIa 22313-1450
`
`
`APPLICATION
`FILING 0r
`GRP ART
`
`
`
`FIL F a * REC'D
`NUMBER
`371(0) DATE
`UNIT
`ATTY.DOCKET.NO
`TOT CLAINIS IND CLAIMS
`61/677,346
`07/30/2012
`125
`UVLD—31391
`
`25883
`HOWISON & ARNOTT, L.L.P
`Po. Box 741715
`DALLAS, TX 75374-1715
`
`CONFIRMATION NO. 3248
`
`FILING RECEIPT
`
`|||I|I||||II||||||Il||IITLIIIIIILIIIIIIIIIIIIIITIlllgilflllll|||||||||||||||I||
`
`Date Mailed: 08/09/2012
`
`It will not be examined for patentability and will
`Receipt is acknowledged of this provisional patent application.
`become abandoned not later than twelve months after its filing date. Any correspondence concerning the application
`must include the following identification information: the U.S. APPLICATION NUMBER, FILING DATE, NAME OF
`APPLICANT, and TITLE OF INVENTION. Fees transmitted by check or draft are subject to collection. Please verify
`the accuracy of the data presented on this receipt. If an error is noted on this Filing Receipt, please submit
`a written request for a Filing Receipt Correction. Please provide a copy of this Filing Receipt with the
`changes noted thereon. If you received a "Notice to File Missing Parts" for this application, please submit
`any corrections to this Filing Receipt with your reply to the Notice. When the USPTO processes the reply
`to the Notice, the USPTO will generate another Filing Receipt incorporating the requested corrections
`
`Applicant(s)
`
`DAVID SIUCHEONG AUYEUNG, CARROLLTON, TX;
`
`Power of Attorney:
`Timothy Bliss-60925
`
`If Required, Foreign Filing License Granted: 08/07/2012
`
`The country code and number of your priority application, to be used for filing abroad under the Paris Convention,
`is US 61/677,346
`
`Projected Publication Date: None, application is not eligible for pre-grant publication
`
`Non-Publication Request: No
`
`Early Publication Request: No
`** SMALL ENTITY **
`Title
`
`HEAT SINK FOR LED LIGHT SOURCE
`
`PROTECTING YOUR INVENTION OUTSIDE THE UNITED STATES
`
`Since the rights granted by a US. patent extend only throughout the territory of the United States and have no
`effect in a foreign country, an inventor who wishes patent protection in another country must apply for a patent
`in a specific country or in regional patent offices. Applicants may wish to consider the filing of an international
`application under the Patent Cooperation Treaty (PCT). An international (PCT) application generally has the same
`effect as a regular national patent application in each PCT—member country. The PCT process simplifies the filing
`of patent applications on the same invention in member countries, but does not result in a grant of "an international
`page 1 of 3
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`Page 7 of 44
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`patent" and does not eliminate the need of applicants to file additional documents and fees in countries where patent
`protection is desired.
`
`Almost every country has its own patent law, and a person desiring a patent in a particular country must make an
`application for patent in that country in accordance with its particular laws. Since the laws of many countries differ
`in various respects from the patent law of the United States, applicants are advised to seek guidance from specific
`foreign countries to ensure that patent rights are not lost prematurely.
`
`Applicants also are advised that in the case of inventions made in the United States, the Director of the USPTO must
`issue a license before applicants can apply for a patent in a foreign country. The filing of a U.S. patent application
`serves as a request for a foreign filing license. The application's filing receipt contains further information and
`guidance as to the status of applicants license for foreign filing.
`
`Applicants may wish to consult the USPTO booklet, "General Information Concerning Patents" (specifically, the
`section entitled "Treaties and Foreign Patents") for more information on timeframes and deadlines for filing foreign
`patent applications. The guide is available either by contacting the USPTO Contact Center at 800-786-9199, or it
`can be viewed on the USPTO website at http://www.uspto.gov/web/offices/pac/doc/general/index.html.
`
`For information on preventing theft of your intellectual property (patents, trademarks and copyrights), you may wish
`to consult the U.S. Government website, http://www.stopfakes.gov. Part of a Department of Commerce initiative,
`this website includes self-help "toolkits" giving innovators guidance on how to protect intellectual property in specific
`countries such as China, Korea and Mexico. For questions regarding patent enforcement issues, applicants may
`call the U.S. Government hotline at 1-866-999-HALT (1 -866-999-4158).
`
`LICENSE FOR FOREIGN FILING UNDER
`
`Title 35, United States Code, Section 184
`
`Title 37, Code of Federal Regulations, 5.11 & 5.15
`
`GRANTED
`
`The applicant has been granted a license under 35 U.S.C. 184, if the phrase "IF REQUIRED, FOREIGN FILING
`LICENSE GRANTED" followed by a date appears on this form. Such licenses are issued in all applications where
`the conditions for issuance of a license have been met, regardless of whether or not a license may be required as
`set forth in 37 CFR 5.15. The scope and limitations of this license are set forth in 37 CFR 5.15(a) unless an earlier
`license has been issued under 37 CFR 5.15(b). The license is subject to revocation upon written notification. The
`date indicated is the effective date of the license, unless an earlier license of similar scope has been granted under
`37 CFR 5.13 or 5.14.
`
`This license is to be retained by the licensee and may be used at any time on or after the effective date thereof unless
`it is revoked. This license is automatically transferred to any related applications(s) filed under 37 CFR 1.53(d). This
`license is not retroactive.
`
`The grant of a license does not in any way lessen the responsibility of a licensee for the security of the subject matter
`as imposed by any Government contract or the provisions of existing laws relating to espionage and the national
`security or the export of technical data. Licensees should apprise themselves of current regulations especially with
`respect to certain countries, of other agencies, particularly the Office of Defense Trade Controls, Department of
`State (with respect to Arms, Munitions and Implements of War (22 CFR 121-128)); the Bureau of Industry and
`page 2 of 3
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`Page 8 of 44
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`Security, Department of Commerce (15 CFR parts 730-774); the Office of Foreign AssetsControl, Department of
`Treasury (31 CFR Parts 500+) and the Department of Energy.
`
`NOT GRANTED
`
`if the phrase "IF REQUIRED, FOREIGN FILING
`No license under 35 U.S.C. 184 has been granted at this time,
`LICENSE GRANTED" DOES NOT appear on this form. Applicant may still petition for a license under 37 CFR 5.12,
`if a license is desired before the expiration of 6 months from the filing date of the application. If 6 months has lapsed
`from the filing date of this application and the licensee has not received any indication of a secrecy order under 35
`U.S.C. 181, the licensee may foreign file the application pursuant to 37 CFR 5.15(b).
`
`
`
`SelectUSA
`
`The United States represents the largest, most dynamic marketplace in the world and is an unparalleled location
`for business investment, innovation and commercialization of new technologies. The USA offers tremendous
`resources and advantages for those who invest and manufacture goods here. Through SelectUSA, our nation
`works to encourage, facilitate, and accelerate business investment. To learn more about why the USA is the best
`country in the world to develop technology, manufacture products, and grow your business, visit SelectUSA.gov.
`
`page 8 of 3
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`

`

`UVLD-313 91
`
`PATENT
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`PROVISIONAL APPLICATION FOR PATENT
`
`HEAT SINK FOR LED LIGHT SOURCE
`
`Inv ent0r(s):
`
`AUYEUNG, David Siucheong — Carrollton, Texas
`
`Attorneys:
`
`Howison & Arnott, L.L.P.
`PO. Box 741715
`
`Dallas, Texas 75374-1715
`
`(972) 479—0462
`
`Page 10 of 44
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`Page 10 of 44
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`

`

`UVLD-3 l 3 91
`
`PATENT
`
`HEAT SINK FOR LED LIGHT SOURCE
`
`TECHNICAL FIELD
`
`[0001]
`
`The following disclosure relates to lighting systems and, more particularly, to lighting
`
`systems using light emitting diodes to externally illuminate signs.
`
`Page 11 of 44
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`Page 11 of 44
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`

`

`UVLD-3 l 3 91
`
`PATENT
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0002]
`
`For a more complete understanding,
`
`reference is now made to the following
`
`description taken in conjunction with the accompanying Drawings in which:
`
`[0003]
`
`Fig. 1A illustrates one embodiment of a billboard that may be externally lighted by
`
`one or more lighting assemblies;
`
`[0004]
`
`Figs.
`
`lB—lD illustrate embodiments of angular positions of the lighting assembly of
`
`Fig. 1 relative to the billboard;
`
`[0005]
`
`Fig. 2 illustrates one embodiment of a lighting assembly that may be used to light the
`
`billboard of Fig. l;
`
`[0006]
`
`Figs. 3A and 3B illustrate one embodiment of a back panel that may be used in the
`
`lighting assembly of Fig. 2;
`
`[0007]
`
`Fig. 3C illustrates one embodiment of the back panel of Figs. 3A and 3B with a light
`
`panel and an optics panel that may also be used in the lighting assembly of Fig. 2;
`
`[0008]
`
`Figs. 4A and 4B illustrate one embodiment of a light panel that may be used with the
`
`lighting assembly of Fig. 2;
`
`[0009]
`
`Fig. 5A and 5B illustrate one embodiment of an optics panel that may be used with
`
`the lighting assembly of Fig. 2;
`
`[0010]
`
`Figs. 6A—6C illustrate a more detailed embodiment of the lighting assembly of Fig. 2;
`
`[0011]
`
`Figs. 7A and 7B illustrate an embodiment of a back panel that may be used with the
`
`lighting assembly of Figs. 6A—6C;
`
`[0012]
`
`Fig. 8A illustrates an embodiment of an LED assembly and an optics panel that may
`
`be used with the lighting assembly of Fig. 6;
`
`Page 12 of 44
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`Page 12 of 44
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`

`

`UVLD-3 l 3 91
`
`PATENT
`
`[0013]
`
`Figs. 8B-8J illustrates embodiments of the optics panel of Fig. 8A and optical
`
`elements that may be used to form part of the optics panel; and
`
`[0014]
`
`Fig. 9 illustrates a more detailed embodiment of the lighting assembly of Fig. 2.
`
`Page 13 of 44
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`Page 13 of 44
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`

`

`UVLD-313 91
`
`PATENT
`
`DETAILED DESCRIPTION
`
`[0015]
`
`Billboards, such as those commonly used for advertising in cities and along roads,
`
`often have a picture and/or text that must be externally illuminated to be visible in low-light
`
`conditions. As technology has advanced and introduced new lighting devices such as the light
`
`emitting diode (LED), such advances have been applied to billboards. However, current lighting
`
`designs have limitations and improvements are needed. Although billboards are used herein for
`
`purposes of example, it is understood that the present disclosure may be applied to lighting for
`
`any type of sign that is externally illuminated.
`
`[0016]
`
`Referring to Fig. 1A, one embodiment of a billboard 100 is illustrated. The billboard
`
`100 includes a surface 102 onto which a picture and/or text may be painted, mounted, or
`
`otherwise affixed. The surface 102 may be any size, such as a commonly used size having a
`
`width of forty-eight feet wide and a height of fourteen feet. The surface 102 may be provided by
`
`placing a backing material on a frame 104 made of steel and/or other materials. The frame 104
`
`may be mounted on one or more support poles 106, which may be considered part of the frame
`
`l04 or separate from the frame l04. The billboard l00 may include a walkway or other support
`
`structure 108 that enables the surface 102 to be more easily accessed.
`
`[0017]
`
`One or more lighting assemblies 110 may be coupled to the walkway 108 (e.g., to a
`
`safety rail or to the walkway itself) and/or to another structural member of the billboard 100 to
`
`illuminate some or all of the surface 102 in low light conditions. The lighting assembly 110 may
`
`be mounted at or near a top edge 112 of the billboard 100, a bottom edge 114 of the billboard
`
`100, a right edge 116 of the billboard 100, and/or a bottom edge 118 of the billboard 100. The
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`lighting assembly 110 may be centered (e.g., located in approximately the center of the billboard
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`100) or off center as illustrated in Fig. 1A.
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`[0018]
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`With additional reference to Figs. lB-lD, a surface 120 of the lighting assembly 110
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`may be parallel with respect
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`to the surface 102 of the billboard 100 (Fig. 1B), may be
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`perpendicular with respect to the surface 102 (Fig. 1C), or may be angled with respect to the
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`surface 102 (Fig. 1D).
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`It is understood that the lighting assembly 110 may be placed in many
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`different orientations and locations relative to the billboard 100 and to one another, and the
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`illustrated positions are only for purposes of example.
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`Furthermore,
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`it
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`is understood that
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`5
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`PATENT
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`references to “top,” “bottom,” “left,” and “right” are used in the present disclosure for purposes
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`of description and do not necessarily denote a fixed position. For example, the billboard 100
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`may be turned on end, and the referenced “top,” “bottom,” “left,” and “right” edges may still be
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`readily identifiable although the “top” edge would be the “left” edge or the “right” edge.
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`[0019]
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`One problem with current lighting technology is that it can be difficult to direct light
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`only onto the surface 102 and even more difficult to do so evenly. This may be due partly to the
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`placement of the lighting assembly 110, as shown in Figs. 1B-1D. As the lighting assembly 110
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`is off center relative to the surface 102, light emitted from the lighting assembly 110 may not
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`evenly strike the surface 102. One problem with uneven illumination is that certain parts of the
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`surface 102 may be more brightly illuminated than other parts. This creates “hot spots” that may
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`be undesirable. Attempting to evenly illuminate the surface 102 may cause light to be directed
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`past the edges 112, 114, 116, and 118 as attempts are made to balance out hot spots in particular
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`areas. However, light that does not strike the surface 102 is wasted and may create problems
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`(e.g., light pollution), as well as waste illumination that could be used for the surface 102.
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`[0020]
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`In addition to the difficulties of evenly illuminating the surface 102, the use of LEDs
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`in an exterior lighting environment involves issues such as heat dissipation and protecting the
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`LEDs against environmental conditions such as moisture. The presence of moving mechanical
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`features such as fans that may be used to provide increased airflow for cooling may create
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`additional reliability problems. Due to the difficulty and expense of replacing and/or repairing
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`the lighting assembly 110 in combination with the desire to provide consistent lighting while
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`minimizing downtime, such issues should be addressed in a manner that enhances reliability and
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`uptime.
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`[0021]
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`Referring to Fig. 2, one embodiment of a lighting assembly 200 is illustrated. The
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`lighting assembly 200 provides a more detailed embodiment of the lighting assembly 110 of Fig.
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`l. The lighting assembly 200 includes a back panel 202, a light panel 204 (e. g., a printed circuit
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`board (PCB)) having a plurality of LEDs (not shown) mounted thereon, and an optics panel 206.
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`As will be described below in more detailed examples, light from the LEDs of the light panel
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`204 may be directed by the optics panel 206 to illuminate the surface 102 of the billboard 100 of
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`Fig. 1. The back panel 202 may be configured to serve as a supporting substrate for the light
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`panel 204 and optics panel 206, as well as to dissipate heat produced by the LEDs.
`6
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`[0022]
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`It is understood that any of the back panel 202, light panel 204, and optics panel 206
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`may actually be two or more physical substrates rather than a single panel as illustrated in Fig. 2.
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`Furthermore, it is understood that there may be additional panels positioned behind the back
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`panel 202, in front of the optics panel 206, and/or between the back panel 202 and light panel
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`204 and/or between the light panel 204 and optics panel 206.
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`[0023]
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`Referring to Figs. 3A-3C, one embodiment of the back panel 202 is illustrated with a
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`front surface 302 and a back surface 304. The back panel 202 includes a top edge 306, a bottom
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`edge 308, a right edge 310, and a left edge 312. The panel 202 may be formed of one or more
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`thermally conductive materials (e.g., aluminum) and/or other materials.
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`[0024]
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`The front surface 302 provides a mounting surface for the light panel 204.
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`In some
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`embodiments, the front surface 302 of the panel 202 may include one or more protrusions 314a
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`and 314b that are substantially parallel to the top edge 306. The protrusions 314a and 314b may
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`be configured to protect the light panel 204 from moisture. Although only two protrusions 314a
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`and 314b are illustrated, it is understood that a single protrusion may be provided or three or
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`more protrusions may be provided. Furthermore, such protrusions may vary in length, shape
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`(e.g., may have angled or curved surfaces), orientation, and/or location on the front surface 302.
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`[0025]
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`Referring specifically to Fig. 3C, a light panel 204 and an optical panel 206 may be
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`mounted under the protrusion 314a (Fig. 3C). Moisture running down the front surface 302 in
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`the direction of arrow 316 may strike the protrusion 314a and be directed away from the light
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`panel 204 and optical panel 206 as shown by arrow 318. Although not shown, moisture may
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`also be directed length down the protrusion 314a. Accordingly, protrusion 314a may serve as a
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`gutter and aid in directing moisture away from a joint 320 where the optical panel 206 abuts the
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`front surface 302. This may be beneficial even when a moisture resistant compound is used to
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`seal the joint 320. In embodiments where there are multiple light panels 204 arranged vertically
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`on the front surface 302, there may be a protrusion positioned above each light panel 204. For
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`example, the protrusion 314a may be positioned directly above one light panel 204 and the
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`protrusion 314b may be positioned directly above another light panel 204.
`
`[0026]
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`Referring specifically to Fig. 3B, the back surface 304 may be configured to increase
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`heat dissipation. For example, the back surface 304 may be configured with a heat sink provided
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`7
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`by fins 322a-322N, where N denotes a total number of fins. The fins 322a-322N increase the
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`surface area of the back surface 304, thereby providing for additional heat dissipation to the
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`surrounding air. The fins 322a-322N may be formed as part of the panel 202 or may be
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`otherwise coupled to the panel 202 (e.g., may be part of a discrete heat sink that is coupled to the
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`back surface 304). Some or all of the fins 322a-322N may be angled, as shown by fins 322a and
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`322b. In some embodiments, holes (not shown) may be provided in some or all of the fins 322a-
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`322N to aid in air circulation.
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`In such embodiments, the holes may cause a chimney effect in
`
`which heated air rises through the holes and is replaced by cooler air. This may be particularly
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`effective in environments where natural air movement is limited.
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`[0027]
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`Referring to Figs. 4A and 4B, one embodiment of a single PCB 402 of the light panel
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`204 is illustrated.
`
`In the present example, the light panel 204 may include multiple PCBs 402,
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`although it is understood that any number of PCBs may be used based on design issues such as
`
`the amount of illumination needed, the amount of illumination provided by a single PCB 402, the
`
`size of the surface 102 of the billboard 100, and/or other factors. As shown in the present
`
`embodiment with a substantially rectangular cross-section, the PCB 402 includes a front surface
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`404, a back surface 406, a top edge 408, a bottom edge 410, a right edge 412, and a left edge
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`414.
`
`[0028]
`
`The PCB 402 may include one or more strings of LEDs 416, with multiple LEDs 416
`
`in a string. For example, a string may include eight LEDs 416 and each PCB 402 may include
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`two strings for a total of sixteen LEDs 416.
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`In this configuration, a light panel 204 having eight
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`PCBs 402 would include ninety-six LEDs 416.
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`It is understood that although the PCBs 404 are
`
`shown as being substantially identical, they may be different in terms of size, shape, and other
`
`factors for a single light panel 204.
`
`[0029]
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`In the present example, the LEDs 416 are surface mounted, but it is understood that
`
`the LEDs 416 may be coupled to the panel 204 using through hole or another coupling process.
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`The surface mounted configuration may ensure that a maximum surface area of each LED 416 is
`
`in contact with the PCB 404, which is in turn in contact with the back panel 202 responsible for
`
`heat dissipation. Each string of LEDs may receive a constant current with the current divided
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`evenly among the LEDs 416.
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`[0030]
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`Referring to Figs. 5A and 5B, one embodiment of a single lens panel 500 of the optics
`
`panel 206 is illustrated.
`
`In the present example, the optics panel 206 may include multiple lens
`
`panels 500, although it is understood that any number of lens panels may be used based on
`
`design issues such as the number, arrangement, and orientation