EP2141410A1 - Einzeln abnehmbares Lichtquellenmodul einer Leuchtdiode - Google Patents

Einzeln abnehmbares Lichtquellenmodul einer Leuchtdiode Download PDF

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Publication number
EP2141410A1
EP2141410A1 EP08012061A EP08012061A EP2141410A1 EP 2141410 A1 EP2141410 A1 EP 2141410A1 EP 08012061 A EP08012061 A EP 08012061A EP 08012061 A EP08012061 A EP 08012061A EP 2141410 A1 EP2141410 A1 EP 2141410A1
Authority
EP
European Patent Office
Prior art keywords
light
emitting diode
light source
source module
independently detachable
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.)
Granted
Application number
EP08012061A
Other languages
English (en)
French (fr)
Other versions
EP2141410B1 (de
Inventor
Yuan-Chang Liou
Ching-Miao Lu
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Priority to EP08012061.1A priority Critical patent/EP2141410B1/de
Publication of EP2141410A1 publication Critical patent/EP2141410A1/de
Application granted granted Critical
Publication of EP2141410B1 publication Critical patent/EP2141410B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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]

Definitions

  • the present invention generally relates to a light source module, in particular, to an independently detachable light-emitting diode light source module.
  • All the conventional lamps such as mercury lamps, incandescent lamps, and halogen lamps have defects of low efficiency, high power consumption, and high maintenance cost. Therefore, the conventional lamps are gradually replaced by light-emitting diode lamps.
  • Light-emitting diodes are semiconductor devices, and are mainly composed of semiconductor materials of III-V group element compounds. This semiconductor material has the characteristic of transforming electric energy into light based on the principle of combining electrons in the semiconductor material with holes to release excessive energy in form of light, thereby achieving the light-emitting effect.
  • the light-emitting of the light-emitting diodes is not realized by heating or discharging, but belongs to the cold light-emitting, so the lifespan of the light-emitting diode devices may be over 100,000 hours in the conditions of good heat dissipation, and the idling time is not required.
  • the light-emitting diode devices have the advantages of rapid response time (about 10 -9 seconds), small volume, small power consumption, low pollution (mercury free), high reliability, and suitable for mass production. Therefore, the light-emitting diode devices are widely applied in, for example, light sources of scanners, liquid crystal display's backlight, illumination of automobiles, traffic signs, and ordinary illumination devices. However, the light-emitting diodes still have the following defects in use.
  • the light generated by the light-emitting diodes has strong directivity, the undesired uniformity and glare make users uncomfortable.
  • the relative position of the conventional light-emitting diode light source module and the luminarie may affect the light distribution curve. Therefore, once the shape of the luminarie is changed, the overall optical design must be redesigned. Thus, elements such as the light-emitting diode light sources, the secondary optical devices, and the luminarie cannot be altered feely, which increases the difficulty in product design.
  • the light-emitting diodes generate large amount of heat during operation, the brightness and lifespan of the light-emitting diodes are influenced by the operating temperature. Therefore, when the power of the light-emitting diode increases, the requirements on heat dissipation become stricter accordingly.
  • the conventional light-emitting diode light source module is usually disposed in the luminarie. and use the housing to dissipate heat, It caused the light-emitting diode light source and the housing cannot be detached independently. Therefore, once the light-emitting diode light source module failed required maintenance or replacement, the entire luminarie must be detached, which increases the operation difficulty and the maintenance cost.
  • the present invention is directed to an independently detachable light-emitting diode light source module, which is easy to maintain and performs preferred illumination effect.
  • the present invention provides an independently detachable light-emitting diode light source module, adapted to be installed in a luminarie having an opening and an accommodating cavity.
  • the independently detachable light-emitting diode light source module includes an installing device, a light-emitting diode array, and a secondary optical light guide plate.
  • the light-emitting diode array and the secondary optical light guide plate are disposed in the installing device.
  • the light source module is disposed inside the accommodating cavity and is assembled in the luminarie via the installing device, and the opening exposes the light source module.
  • the installing device includes a lamp box having a first light output end, the light-emitting diode array and the secondary optical light guide plate are disposed in the lamp box, and the secondary optical light guide plate is located at the first light output end.
  • the lamp box and the secondary optical light guide plate are integrally formed.
  • the installing device further includes a lampshade having a second light output end, the lampshade is disposed at the first light output end, and the secondary optical light guide plate is located between the lampshade and the light-emitting diode array.
  • the secondary optical light guide plate and the lampshade are integrally formed.
  • the lamp box, the lampshade, and the secondary optical light guide plate are integrally formed.
  • the independently detachable light-emitting diode light source module further includes an optical glass disposed between the first light output end and the second light output end.
  • the optical glass includes a prism sheet.
  • a material of the installing device is metal.
  • the installing device has a first fixing member, and the luminarie has a second fixing member.
  • the first fixing member and the second fixing member are engaged to fix the independently detachable light-emitting diode light source module in the luminarie.
  • the light-emitting diode array includes a circuit board and at least one light-emitting diode light source.
  • the light-emitting diode light source is disposed on the circuit board.
  • the light-emitting diode light source has a plurality of light-emitting diodes, and the light-emitting diodes are arranged along a first axis direction.
  • the secondary optical light guide plate has at least one slot and a plurality of light guide plates.
  • the slot exposes the light-emitting diode light source, and the light guide plates are disposed at two sides of the slot.
  • the light guide plates are disposed asymmetrically along a second axis direction, and the second axis is perpendicular to the first axis.
  • the independently detachable light-emitting diode light source module of the present invention assembles the light-emitting diode light source as an independent component in the luminarie, so as to achieve the quick detachment and assembly. Therefore, the detachable light-emitting diode light source module may be detached independently and conveniently for maintenance and replacement, and the installing device may be made of a material with high coefficient of thermal conductivity to be contributive to heat dissipation.
  • the independently detachable light-emitting diode light source module of the present invention has the secondary optical light guide plate, and thus the illumination region of the light-emitting diode light source can be adjusted.
  • the illumination range and light pattern of the light-emitting diode light source can be controlled through the design of the secondary optical light guide plate, such that the independently detachable light-emitting diode light source module can be used in different environments.
  • the secondary optical light guide plate and the optical film may uniformize the light emitted by the light-emitting diode light source, and thus avoiding glare and achieve better illumination effect.
  • FIG. 1 is a schematic cross-sectional view of an independently detachable light-emitting diode light source module and a luminarie according to an embodiment of the present invention.
  • FIG. 2 is a schematic view illustrating arrangement of the light-emitting diode light source in FIG. 1 on a circuit board.
  • FIG. 3 is a light intensity distribution diagram of an independently detachable light-emitting diode light source module without the secondary optical light guide plate.
  • FIG. 4 is a light intensity distribution diagram of the independently detachable light-emitting diode light source module according to an embodiment of the present invention.
  • FIG. 1 is a schematic cross-sectional view of an independently detachable light-emitting diode light source module according to an embodiment of the present invention.
  • the independently detachable light-emitting diode light source module 100 is adapted to be installed on a luminarie 200, and the luminarie 200 has an opening 210 and an accommodating cavity 220.
  • the independently detachable light-emitting diode light source module 100 is disposed inside the accommodating cavity 220, and the opening 210 exposes the independently detachable light-emitting diode light source module 100.
  • the independently detachable light-emitting diode light source module 100 includes an installing device 110, a light-emitting diode array 120, and a secondary optical light guide plate 130.
  • the light-emitting diode array 120 and the secondary optical light guide plate 130 are assembled on the installing device 110, and the independently detachable light-emitting diode light source module 100 is assembled on the luminarie 200 via the installing device 110.
  • the light-emitting diode array 120 has a circuit board 122 and a plurality of light-emitting diode light sources 124.
  • the circuit board 122 may provided with a plurality of circuit loop protection elements 126, for protecting the circuit loop connected with the light-emitting diode light source 124.
  • the protection elements 126 are, for example, zener diodes.
  • the material of the installing device 110 is, for example, a material with high coefficient of thermal conductivity such as metal, such that the heat generated by the independently detachable light-emitting diode light source module 100 in operation may be successfully transferred to the luminarie 200, and then dissipated to the outside.
  • the installing device 110 may also have heatsink structures such as heatsink plates to facilitate the heat dissipation.
  • the installing device 110 includes a lamp box 112 having a first light output end 112a.
  • the light-emitting diode array 120 and the secondary optical light guide plate 130 are disposed in the installing device 110, and the secondary optical light guide plate 130 is located at the first light output end 112a.
  • the installing device 110 further includes a lampshade 114.
  • the secondary optical light guide plate 130 is located between the lampshade 114 and the light-emitting diode array 120.
  • the lampshade 114 has a second light output end 114a, such that the light emitted by the light-emitting diode array 120 exits through the first light output end 112a and the second light output end 114a.
  • the independently detachable light-emitting diode light source module 100 further includes an optical film 140 disposed between the first light output end 112a and the second light output end 114a.
  • the optical film 140 is, for example, a prism sheet, for uniformizing the light.
  • the lampshade 114 is, for example, locked on the lamp box 112 by a plurality of screws 150.
  • the lamp box 112, the lampshade 114, and the secondary optical light guide plate 130 are independent elements, but may also be integrally formed.
  • the lamp box 112 and the lampshade 114 may be integrally formed.
  • the lampshade 114 and the secondary optical light guide plate 130 may be integrally formed.
  • the lamp box 112 and the secondary optical light guide plate 130 may be integrally formed.
  • O r, the lamp box 112, the lampshade 114, and the secondary optical light guide plate 130 are integrally formed.
  • the installing device 110 has a first fixing member 116
  • the luminarie 200 has a second fixing member 230.
  • the first fixing member 116 and the second fixing member 230 are engaged to fix the independently detachable light-emitting diode light source module 100 on the luminarie 200.
  • the first fixing member 116 may be a hook
  • the second fixing member 230 has a slot. The first fixing member 116 passes through the second fixing member 230 to fix the independently detachable light-emitting diode light source module 100 on the luminarie 200.
  • the installing device 110, the light-emitting diode array 120, and the secondary optical light guide plate 130 are assembled with the luminarie 200 in the form of the independently detachable light-emitting diode light source module 100
  • the independently detachable light-emitting diode light source module 100 has the advantage of easy detachment, which brings convenience to the maintenance and replacement of the circuit board 122, the light-emitting diode light source 124, and the secondary optical light guide plate 130.
  • the installing device 110 may be made of a material of high coefficient of thermal conductivity such as metal, such that the heat dissipation effect of the independently detachable light-emitting diode light source module 100 is improved.
  • FIG. 2 is a schematic view illustrating arrangement of the light-emitting diode light sources in FIG. 1 on the circuit board.
  • the light-emitting diode light source 124 includes, for example, a plurality of light-emitting diodes 124a, and the light-emitting diodes 124a are arranged along a first axis x.
  • the secondary optical light guide plate 130 has a plurality of slots 132 disposed corresponding to the light-emitting diode light source 124, and a plurality of light guide plates 134 extending along the first axis x are disposed at two sides of the slots 132.
  • the light emitted by the light-emitting diode light source 124 exits through the slots 132, reflected by the light guide plates 134, and then exits through the opening 210 of the luminarie 200.
  • the direction of the light emitted by the light-emitting diode light source 124 may be controlled through the design of the light guide plates 134, so as to control the illumination range and light pattern of the independently detachable light-emitting diode light source module 100, and thus the independently detachable light-emitting diode light source module 100 may be applied in different environments.
  • the secondary optical light guide plate 130 also has the effect of uniformizing the light emitted by the light-emitting diode light source 124, and has the function of preventing glare, thereby achieving better illumination effect.
  • three axes namely a first axis x, a second axis y, and a third axis z, are set to be perpendicular to one another, and the light guide plates extend along the first axis x and are arranged along the second axis y.
  • Y 0 indicates the position of the light-emitting diode light source at the second axis y.
  • Z 0 indicates the position of the light-emitting diode light source at the third axis z.
  • Y indicates the position of the light guide plates at the second axis y.
  • Z indicates the height of the light guide plates at the third axis z.
  • a n and b n are coefficients, and N and M are numbers of terms.
  • formula (1) and formula (2) may be used to dispose the light guide plates at two sides of the light-emitting diode light source.
  • the shape of the light guide plates is not limited to the shape as shown in FIG. 2 .
  • the light guide plates may have different shapes according to different environments, for example, the light guide plates may be designed to be curved.
  • FIG. 3 is a light intensity distribution diagram of an independently detachable light-emitting diode light source module without the secondary optical light guide plate.
  • FIG. 4 is a light intensity distribution diagram of an independently detachable light-emitting diode light source module according to an embodiment of the present invention.
  • Table 1 shows light intensity distribution values of the independently detachable light-emitting diode light source module in FIG. 3
  • Table 2 is a light intensity distribution diagram of the independently detachable light-emitting diode light source module in FIG. 4 .
  • a road width is set to be 6 m
  • a lamp-post arm is set to be 66 cm
  • an elevation of the independently detachable light-emitting diode light source module is set to be 14 degrees.
  • the first axis x is set to be a travelling direction
  • the second axis y is set to be a road width direction
  • the third axis z is a direction perpendicular to the road surface.
  • the street lamp is disposed at one side of the road, and an ideal light pattern thereof extends along the first axis x.
  • the light guide plates may be disposed along the second axis y in an asymmetrically curved surface, so as to reflect the light diffused to the second axis y, such that the light emitted by the independently detachable light-emitting diode light source module is concentrated along the second axis y, and shifts towards the positive direction of the second axis y. That is to say, M and N are set to be different, and a n and b n are set to be different, so as to dispose the light guide plates in an asymmetrically curved surface. It can be seen from FIG. 3 and FIG. 4 that the light guide plates make the light to be concentrated in a road width boundary L 1 and a road width boundary L2, thus achieving better illumination effect.
  • the present invention at least has the following advantages.
  • the circuit board, the light-emitting diode light source, the secondary optical light guide plate, and the installing device are installed on the luminarie in the form of a light source module, and the independently detachable light-emitting diode light source module has the advantage of easy detachment. Therefore, the maintenance and replacement of the circuit board, the light-emitting diode light source, and the secondary optical light guide plate become more convenient.
  • the installing device is made of a material of high coefficient of thermal conductivity such as metal, such that the heat dissipation effect of the independently detachable light-emitting diode light source module is improved.
  • the direction of the light emitted by the light-emitting diode light source may be controlled through the design of the light guide plates, so as to control the illumination range and light pattern of the independently detachable light-emitting diode light source module, and thus the independently detachable light-emitting diode light source module may be applied in different environments.
  • the secondary optical light guide plate has the effect of uniformizing the light emitted by the light-emitting diode light source, and has the function of preventing glare, thus achieving better illumination effect.
  • An optical film is provided between the first light output end and the first light output end, so as to achieve the dust-proof and moisture-proof effects of the light-emitting diode light source, and further uniformize the light emitted by the light-emitting diode light source, thereby achieving better illumination effect.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP08012061.1A 2008-07-03 2008-07-03 Einzeln abnehmbares Lichtquellenmodul einer Leuchtdiode Not-in-force EP2141410B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08012061.1A EP2141410B1 (de) 2008-07-03 2008-07-03 Einzeln abnehmbares Lichtquellenmodul einer Leuchtdiode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08012061.1A EP2141410B1 (de) 2008-07-03 2008-07-03 Einzeln abnehmbares Lichtquellenmodul einer Leuchtdiode

Publications (2)

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EP2141410A1 true EP2141410A1 (de) 2010-01-06
EP2141410B1 EP2141410B1 (de) 2014-05-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI426330B (zh) * 2010-07-14 2014-02-11 Chi Lin Optoelectronics Co Ltd A backlight module and a display device including the backlight module
CN103629592A (zh) * 2012-08-24 2014-03-12 深圳市海洋王照明工程有限公司 Led壁灯
CN106641864A (zh) * 2016-10-12 2017-05-10 惠州Tcl移动通信有限公司 一种用于电子产品的led灯罩结构及移动设备、键盘

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040188593A1 (en) * 2003-03-20 2004-09-30 Patrick Mullins Photosensor control unit
US20050180135A1 (en) * 2004-02-18 2005-08-18 Gelcore Llc Lighting apparatus for creating a substantially homogenous lit appearance
DE202006015099U1 (de) * 2006-10-02 2007-01-04 AUGUX CO., LTD., Gueishan LED-Beleuchtungsvorrichtung
DE202007011385U1 (de) * 2007-08-14 2007-12-27 AUGUX CO., LTD., Gueishan LED Lampengerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040188593A1 (en) * 2003-03-20 2004-09-30 Patrick Mullins Photosensor control unit
US20050180135A1 (en) * 2004-02-18 2005-08-18 Gelcore Llc Lighting apparatus for creating a substantially homogenous lit appearance
DE202006015099U1 (de) * 2006-10-02 2007-01-04 AUGUX CO., LTD., Gueishan LED-Beleuchtungsvorrichtung
DE202007011385U1 (de) * 2007-08-14 2007-12-27 AUGUX CO., LTD., Gueishan LED Lampengerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI426330B (zh) * 2010-07-14 2014-02-11 Chi Lin Optoelectronics Co Ltd A backlight module and a display device including the backlight module
CN103629592A (zh) * 2012-08-24 2014-03-12 深圳市海洋王照明工程有限公司 Led壁灯
CN106641864A (zh) * 2016-10-12 2017-05-10 惠州Tcl移动通信有限公司 一种用于电子产品的led灯罩结构及移动设备、键盘

Also Published As

Publication number Publication date
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