GB2495647A - LED lamp tube - Google Patents

LED lamp tube Download PDF

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Publication number
GB2495647A
GB2495647A GB1221938.2A GB201221938A GB2495647A GB 2495647 A GB2495647 A GB 2495647A GB 201221938 A GB201221938 A GB 201221938A GB 2495647 A GB2495647 A GB 2495647A
Authority
GB
United Kingdom
Prior art keywords
text
power supply
led lamp
lamp tube
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1221938.2A
Inventor
Jianjun Du
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN YYC LED LIGHTING CO Ltd
Original Assignee
SHENZHEN YYC LED LIGHTING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2010102534594A external-priority patent/CN101956916A/en
Priority claimed from CN2010102535258A external-priority patent/CN101956917A/en
Priority claimed from CN201010253227.9A external-priority patent/CN101956915B/en
Application filed by SHENZHEN YYC LED LIGHTING CO Ltd filed Critical SHENZHEN YYC LED LIGHTING CO Ltd
Publication of GB2495647A publication Critical patent/GB2495647A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/275—Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/031—Lighting devices intended for fixed installation of surface-mounted type the device consisting essentially only of a light source holder with an exposed light source, e.g. a fluorescent tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/023—Power supplies in a casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

An LED lamp tube (10) comprises a support substrate (11), a plurality of LEDs (110), a lamp base (13), a power supply (15), a lamp cover (17) and end covers (18). The LEDs (110) are arranged on the support substrate (11). The lamp base (13) is used for fixing the support substrate (11), and has an accommodation space (134). The power supply (15) is formed by a power supply housing (150) and a power supply circuit board arranged in the power supply housing (150). The power supply (15) is arranged in the accommodation space (134), and the power supply housing (150) is at least partially exposed outside the accommodation space (134). In this way, the heat dissipation performance of the power supply of the LED lamp tube (10) is improved effectively.

Description

Description
LED LAMP TUBE
Technical Field
[0001] The present invention relates to a lamp tube, and particularly to an LED lamp tube.
[0002] With the continuous development of technology, the lighting technology with an LED (Light Emitting Diode) has been widely used in various industries, for example, the common indoor and outdoor ornamental lighting devices. The existing LED lamp tubes generally comprise a carrier substrate, a plurality of LEDs disposed over the carrier substrate, a lamp holder for fixing the carrier substrate and having a holding space, and a power supply completely situated within the holding space. As the power supply is completely enclosed in the holding space of the lamp holder, the heat generated by the power supply cannot quickly dissipate into the ambient air. As a result, the heat dissipation effect of the power supply is not desired.
Summary of the invention
[0003] In view of the above, the object of the present invention is to provide an LED lamp tube, which is efficient in dissipating heat from the power supply of the LED lamp tube.
[0004] The present invention provides an LED lamp tube, comprising: a carrier substrate: a plurality of LEDs disposed over the carrier substrate; a lamp holder for securing the carrier substrate and having a holding space: and a power supply comprising a power supply housing and a power supply circuit board disposed within the power supply housing, wherein the power supply is disposed within the holding space, with the power supply housing being at least partially exposed from the holding space.
[0005] According to a preferred embodiment of the invention, the lamp holder comprises a first side wall adjacent to the carrier substrate and a second side wall remote from the carrier substrate, the second side wall being provided with a notch from which the power supply housing is exposed.
[0006] According to a preferred embodiment of the invention, the lamp holder is shaped like a semi-cylinder, the first side wall forming a straight part of the semi-cylinder and the second side wall forming a cylinder part of the semi-cylinder.
[0007] According to a preferred embodiment of the invention, the notch is arranged on the top of the cylinder part, and the power supply housing comprises a U-shaped upper housing part and a lower housing part to coordinate with the upper housing part so as to accommodate the power supply circuit board, and a top surface of the upper housing part is exposed from the notch.
[0008] According to a preferred embodiment of the invention, the notch is arranged at the ends of the lamp holder, and the LED lamp tube comprises end caps arranged at said ends, and the power supply housing is provided with a narrowed neck portion at both ends to be inserted into said end caps and around the notch of the second side wall.
[0009] According to a preferred embodiment of the invention, the first side wall is provided with a barrier wall being disposed at both sides of the carrier substrate and extending away from the second side wall, the barrier wall comprising a pressing-deformed part thereon to secure the carrier substrate to the first side wall.
[0010] According to a preferred embodiment of the invention, a heat conducting laminate is further disposed between the carrier substrate and the first side wall.
[0011] According to a preferred embodiment of the invention, the LED lamp tube further comprises insulating rims for wrapping the side edges of the carrier substrate, and the pressing-deformed part acts on the insulating rims.
[0012] According to a preferred embodiment of the invention, the insulating rims have a U-shaped cross section.
[0013] According to a preferred embodiment of the invention, the power supply housing is provided with side ribs on both sides, which are received in a socket arranged on an inner surface of the holding space to allow the power supply housing to slide in a direction along which the lamp holder extends.
[0014] According to a preferred embodiment of the invention, the power supply housing is further provided with ventilation holes.
[0015] According to a preferred embodiment of the invention, the LED lamp tube further comprises a lamp shade for mating with the lamp holder. The lamp holder is provided with a first hook at the sides, and the lamp shade is provided with a second buckle at the sides to form a snap-fit assembly with the first hook to allow the lamp shade to slide in a direction along which the lamp holder extends.
[0016] In view of the above, the LED lamp tube proposed in the present invention can efficiently eliminate the heat generated by the power supply.
Brief description of the drawings
[0017] To render the technical solutions described in the embodiments of the present invention more apparent, a brief introduction is given hereunder to the figures which the embodiments to be set forth below may refer to.
Obviously, the figures to be described hereunder are not exhaustive, and persons of ordinary skill in the art would be able to obtain, based on these figures, other figures without exercising inventive skills.
[0018] FIG. 1 illustrates a decomposed LED lamp tube according to one preferred embodiment of the present invention; [0019] FIG. 2 illustrates an assembled LED lamp tube according to one preferred embodiment of the present invention; [0020] FIG. 3 illustrates a zoomed-in cross section of a decomposed LED lamp tube according to one preferred embodiment of the present invention; [0021] FIG. 4 illustrates a zoomed-in cross section of an assembled LED lamp tube according to one preferred embodiment of the present invention; and [0022] FIG. 5 illustrates part of an assembled LED according to one preferred embodiment of the present invention.
Detailed Description of the preferred embodiments
[0023] The present invention is hereunder described in detail based on the following embodiments with reference to the figures.
[0024] As is shown, FIG. 1 illustrates a decomposed LED lamp tube according to one preferred embodiment of the present invention; FIG. 2 illustrates an assembled LED lamp tube according to one preferred embodiment of the present invention. The LED lamp tube 10 according to the present invention comprises a carrier substrate 11, insulating rims 111, a heat conducting laminate 112, a lamp holder 13, a power supply 15, a lamp shade 17 and end caps 18.
[0025] As is shown, FIG. 3 illustrates a zoomed-in cross section of a decomposed LED lamp tube according to one preferred embodiment of the present invention; FIG. 4 illustrates a zoomed-in cross section of an assembled LED lamp tube according to one preferred embodiment of the present invention. A plurality of lighting LEDs 110 is spaced on the carrier substrate 11. The lamp holder 13 comprises a first side wall 131 adjacent to the carrier substrate 11 and a second side wall 132 remote from the carrier substrate 11. According to this embodiment, the lamp holder 13 is shaped like a hollow semi-cylinder, wherein the first side wall 131 forms a straight part of the semi-cylinder, while the second side wall 132 forms a cylinder part of the semi-cylinder. The side walls 131 and 132 together define a holding space 134. The lamp holder 13 is preferably made of a long strip shape material extruded from aluminum. Its outer surface may be provided with heat dissipation fins to enhance the heat dissipation effect.
[0026] A power supply 15 is disposed within the holding space 134, and comprises a power supply housing 150 and a power supply circuit board (not shown) situated in the power supply housing 150. In this embodiment, the power supply housing 150 comprises a U-shaped upper housing part and a lower housing part 156, which coordinate with each other to accommodate the power supply circuit board of the power supply 15. The power supply housing 150 is provided with side ribs 154 at both sides, which may be received in a socket 135 arranged on the inner surface of the holding space 134 such that the power supply housing 150 may slide in a direction along which the lamp holder 13 extends.
[0027] It is shown in FIGs.1-4 that a notch 1321 is formed on the second side wall 132 of the lamp holder 13, and in this embodiment, situated at the ends of the lamp holder 13 and particularly on the top of the second side waIl 132.
According to the present invention, the power supply housing 150 is exposed from the notch 1321. In particular, it is the top surface of the upper housing part 150 that is exposed from the notch 1321, such that the power supply housing 150 comes into direct contact with the air outside the lamp holder 13 to diffuse the heat generated by the power supply 15 to the ambient air. The power supply 15 may be further provided with ventilation holes 151 thereon, spaced from one another to further improve the heat dissipation.
[0028] Additionally, the power supply housing 150 is provided with a narrowed neck portion 152 at both ends. When being assembled, the neck portions 152 are inserted into the end caps 18 and around the notch of the second side wall 132. Thereby, the mating between the neck portions 152 and the end caps 18 and the second side wall 132 secures the power supply housing 150 without the need of additional fixing components. The end caps 18 may be further provided with power supply pins (not shown) for engaging with the power supply.
[0029] With reference to FIGs.3 and 4, the carrier substrate 11 is situated on the first side wall 131. The first side wall 131 comprises a barrier wall 136 disposed at both sides of the carrier substrate 11 and extending away from the second side wall 132. In this embodiment, the barrier wall 136 is designed such that itis perpendicular to the first side wall 131. Disposed on the barrier wall 136 is a pressing-deformed part 137 to secure the carrier substrate 11 to the first side wall 131. Now turning to FIG.5 which illustrates part of an assembled LED according to one preferred embodiment of the present invention, a plurality of the pressing-deformed parts 137 is spaced on the barrier wall 136, and deformed due to pressure against the barrier wall 136. In other embodiments, the barrier wall 136 may be tapered in a direction away from the first side wall 131 such that it fixes the carrier substrate 1 more securely. It can be seen from above that the present invention eliminates the need of additional fixing components, such as a screw, to secure the carrier substrate 11.
[0030] As is shown in FIG.3 and 4, the two side edges of the carrier substrate 11 are wrapped with insulating rims 111. In this embodiment, the insulating rims 111 have a U-shaped cross section and wrap the side edges of the carrier substrate 11. The pressing-deformed parts 137 act on the insulating rims 111 such that the carrier substrate ills fixed to the first side wall 131 by means of the insulating rims 111. According to this embodiment of the invention, the purpose of the insulating rims 111 is to prevent short circuits between the carrier substrate 11 and the carrier wall 136, or between the pressing-deformed pad 137 and the lamp holder 13.
[0031] A heat conducting laminate 112 is disposed between the carrier substrate 11 and the first side wall 131 to increase the heat conduction therebetween. The heat conducting laminate 112 preferably has the same thickness as the insulating rims ill.
[0032] Additionally, as is illustrated in FIGs.3 and 4, the lamp holder 13 is provided with a first hook 138 at the sides, and the lamp shade 17 is provided with a second buckle 171 at the sides to form a snap4it assembly with the first buckle 138, such that the lamp shade 17 and the lamp holder 13 may engage with each other to allow the lamp shade 17 to slide in a direction along which the lamp holder 13 extends. The lamp shade 17 is made of a light conducting material which may be selected as needed, and may take any shapes deemed fit in accordance with circumstances.
[0033] While the present invention is described with reference to particular embodiments, these embodiments should not be construed to restrict the scope of the present invention. Any equivalent variations to the structures or flows disclosed in the description and the drawing of the present invention, or any direct or indirect applications of the present invention to other related technical fields are also considered to be part of the present invention.

Claims (1)

  1. <claim-text>Claims 1. An LED lamp tube, comprising: a carrier substrate; a plurality of LEDs disposed over the carrier substrate; a lamp holder for securing the carrier substrate and having a holding space; and a power supply comprising a power supply housing and a power supply circuit board disposed within the power supply housing, wherein the power supply is disposed within the holding space, with the power supply housing being at least partially exposed from the holding space.</claim-text> <claim-text>2. The LED lamp tube according to claim 1, wherein the lamp holder comprises a first side wall adjacent to the carrier substrate and a second side wall remote from the carrier substrate, the second side wall being provided with a notch from which the power supply housing is exposed.</claim-text> <claim-text>3. The LED lamp tube according to claim 2, wherein the lamp holder is shaped like a semi-cylinder, the first side wall forming a straight part of the semi-cylinder and the second side wall forming a cylinder part of the semi-cylinder.</claim-text> <claim-text>4. The LED lamp tube according to claim 3, wherein the notch is arranged on the top of the cylinder part, and wherein the power supply housing comprises a U-shaped upper housing part and a lower housing part to coordinate with the upper housing part so as to accommodate the power supply circuit board, and a top surface of the upper housing part is exposed from the notch.</claim-text> <claim-text>5. The LED lamp tube according to claim 2, wherein the notch is arranged at the ends of the lamp holder, and wherein the LED lamp tube comprises end caps arranged at said ends, and the power supply housing is provided with a narrowed neck portion at both ends to be inserted into said end caps and around the notch of the second side wall.</claim-text> <claim-text>6. The LED lamp tube according to claim 2, wherein the first side wall is provided with a barrier wall being disposed at both sides of the carrier substrate and extending away from the second side wall, the barrier wall comprising a pressing-deformed part thereon to secure the carrier substrate to the first side wall.</claim-text> <claim-text>7. The LED lamp tube according to claim 6, wherein a heat conducting laminate is further disposed between the carrier substrate and the first side wall.</claim-text> <claim-text>8. The LED lamp tube according to claim 6, wherein the LED lamp tube further comprises insulating rims for wrapping the side edges of the carrier substrate, and wherein the pressing-deformed part acts on the insulating rims.</claim-text> <claim-text>9. The LED lamp tube according to claim 8, wherein the insulating rims have a U-shaped cross section.</claim-text> <claim-text>10. The LED lamp tube according to claim 1, wherein the power supply housing is provided with side ribs on both sides, which are received in a socket arranged on an inner surface of the holding space to allow the power supply housing to slide in a direction along which the lamp holder extends.</claim-text> <claim-text>11. The LED lamp tube according to claim 1, wherein the power supply housing is further provided with ventilation holes.</claim-text> <claim-text>12. The LED lamp tube according to claim 1, further comprising a lamp shade for mating with the lamp holder, wherein the lamp holder is provided with a first hook at the sides, and the lamp shade is provided with a second buckle at the sides to form a snap-fit assembly with the first hook to allow the lamp shade to slide in a direction along which the lamp holder extends.</claim-text>
GB1221938.2A 2010-08-13 2011-08-09 LED lamp tube Withdrawn GB2495647A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2010102534594A CN101956916A (en) 2010-08-13 2010-08-13 LED lamp tube
CN2010102535258A CN101956917A (en) 2010-08-13 2010-08-13 LED lighting tube
CN201010253227.9A CN101956915B (en) 2010-08-13 2010-08-13 LED lamp tube
PCT/CN2011/078159 WO2012019535A1 (en) 2010-08-13 2011-08-09 Led lamp tube

Publications (1)

Publication Number Publication Date
GB2495647A true GB2495647A (en) 2013-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB1221938.2A Withdrawn GB2495647A (en) 2010-08-13 2011-08-09 LED lamp tube

Country Status (2)

Country Link
GB (1) GB2495647A (en)
WO (1) WO2012019535A1 (en)

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WO2014008463A1 (en) * 2012-07-06 2014-01-09 Ilumisys, Inc. Power supply assembly for led-based light tube
US8807785B2 (en) 2008-05-23 2014-08-19 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US8840282B2 (en) 2010-03-26 2014-09-23 Ilumisys, Inc. LED bulb with internal heat dissipating structures
EP2789906A1 (en) * 2013-04-11 2014-10-15 RIDI Leuchten GmbH Illumination device
CN104121506A (en) * 2014-07-24 2014-10-29 厦门博美达照明有限公司 LED tri-proof lamp
US8894430B2 (en) 2010-10-29 2014-11-25 Ilumisys, Inc. Mechanisms for reducing risk of shock during installation of light tube
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
US8928025B2 (en) 2007-12-20 2015-01-06 Ilumisys, Inc. LED lighting apparatus with swivel connection
US8946996B2 (en) 2008-10-24 2015-02-03 Ilumisys, Inc. Light and light sensor
US9013119B2 (en) 2010-03-26 2015-04-21 Ilumisys, Inc. LED light with thermoelectric generator
US9101026B2 (en) 2008-10-24 2015-08-04 Ilumisys, Inc. Integration of LED lighting with building controls
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9353939B2 (en) 2008-10-24 2016-05-31 iLumisys, Inc Lighting including integral communication apparatus
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US9574717B2 (en) 2014-01-22 2017-02-21 Ilumisys, Inc. LED-based light with addressed LEDs
US9807842B2 (en) 2012-07-09 2017-10-31 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls
WO2019025604A1 (en) * 2017-08-03 2019-02-07 Aratron Gmbh Led lighting device
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US8807785B2 (en) 2008-05-23 2014-08-19 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US9585216B2 (en) 2008-10-24 2017-02-28 Ilumisys, Inc. Integration of LED lighting with building controls
US10036549B2 (en) 2008-10-24 2018-07-31 Ilumisys, Inc. Lighting including integral communication apparatus
US9353939B2 (en) 2008-10-24 2016-05-31 iLumisys, Inc Lighting including integral communication apparatus
US10342086B2 (en) 2008-10-24 2019-07-02 Ilumisys, Inc. Integration of LED lighting with building controls
US9398661B2 (en) 2008-10-24 2016-07-19 Ilumisys, Inc. Light and light sensor
US10932339B2 (en) 2008-10-24 2021-02-23 Ilumisys, Inc. Light and light sensor
US8946996B2 (en) 2008-10-24 2015-02-03 Ilumisys, Inc. Light and light sensor
US10182480B2 (en) 2008-10-24 2019-01-15 Ilumisys, Inc. Light and light sensor
US9101026B2 (en) 2008-10-24 2015-08-04 Ilumisys, Inc. Integration of LED lighting with building controls
US10973094B2 (en) 2008-10-24 2021-04-06 Ilumisys, Inc. Integration of LED lighting with building controls
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