EP2679891A1 - Lichtemittierende Vorrichtung - Google Patents

Lichtemittierende Vorrichtung Download PDF

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Publication number
EP2679891A1
EP2679891A1 EP13172327.2A EP13172327A EP2679891A1 EP 2679891 A1 EP2679891 A1 EP 2679891A1 EP 13172327 A EP13172327 A EP 13172327A EP 2679891 A1 EP2679891 A1 EP 2679891A1
Authority
EP
European Patent Office
Prior art keywords
fastening
light emitting
plane
emitting device
transparent tube
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Withdrawn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
EP13172327.2A
Other languages
English (en)
French (fr)
Inventor
Sheng-Ping Chen
Ho-Shun Yang
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.)
Lextar Electronics Corp
Original Assignee
Lextar Electronics Corp
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
Application filed by Lextar Electronics Corp filed Critical Lextar Electronics Corp
Publication of EP2679891A1 publication Critical patent/EP2679891A1/de
Withdrawn legal-status Critical Current

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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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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 invention relates in general to a light emitting device, and more particularly to a light emitting device assembled by buckling.
  • a light emitting device includes a light emitting element, a transparent tube and two end caps.
  • the light emitting element is disposed in the transparent tube, and the two end caps respectively cover two ends of the transparent tube.
  • the end caps are generally engaged to the transparent tube via screw. Structural strength of the above structure is good, but assembly time and costs are increased. Further, additional parts may be needed to cover the screw, or to cover a hole for passing assembly tool (e.g., a screw driver) during an assembly process.
  • assembly tool e.g., a screw driver
  • the invention is directed to a light emitting device, in which an end cap is assembled by buckling for increasing an assembly speed.
  • a light emitting device comprises a transparent tube, a heat dissipating board, a light emitting element, a fastening member and an end cap.
  • the heat dissipating board is disposed in the transparent tube.
  • the light emitting element is disposed on the heat dissipating board.
  • the fastening member is disposed at one end of the transparent tube and has a fastening opening.
  • the end cap has an inner sidewall and has a fastening part.
  • the fastening part has a fixing plane and a chamfering plane.
  • the fastening part is fixedly disposed on the inner sidewall via the fixing plane.
  • the chamfering plane inclines towards the fixing plane as getting closer to an opening of the end cap. When the end cap covers the transparent tube, the fastening part is buckled into the fastening opening via the chamfering plane.
  • FIG. 1A is an appearance of a light emitting device according to an embodiment of the present invention.
  • FIG. 1B is an exploded view of the light emitting device in FIG. 1A .
  • FIG. 2 is an enlarged partial view of the transparent tube in FIG. 1A .
  • FIG. 3 is a partial view of the end cap in FIG. 1B .
  • FIG. 4 is a top view of the end cap in FIG. 3 .
  • FIG. 5 is a schematic diagram of a fastening part of an end cap assembled to a fastening opening of a fastening member.
  • FIG. 6 is an enlarged view of an end cap of a light emitting device according to another embodiment of the present invention.
  • FIG. 1A shows an appearance of a light emitting device according to an embodiment of the present invention.
  • FIG. 1B shows an exploded view of the light emitting device in FIG. 1A .
  • a light emitting device 100 is a light tube, and comprises a transparent tube 110, a light emitting element 120 ( FIG. 1B ), a heat dissipating board 130 ( FIG. 1B ), a first fastening member 140 ( FIG. 1B ), a second fastening member 160 ( FIG. 1B ), and two end caps 150.
  • the two end caps 150 are disposed at two ends of the transparent tube 110, respectively.
  • the first fastening member 140 has a first fastening opening 141
  • the end caps 150 has a first fastening part 152.
  • the first fastening part 152 of the end cap 150 is bucked into the first fastening opening 141 of the first fastening member 140 via a first chamfering plane 152b ( FIG. 2 ) of the first fastening part 152.
  • the end caps 150 are assembled to the first fastening member 140 with enhanced assembly readiness.
  • FIG. 2 shows an enlarged partial view of the transparent tube 110 in FIG. 1A (section 2').
  • the transparent tube 110 may be a long or short transparent tube, with a length thereof unlimited by the embodiment of the present invention.
  • the transparent tube 110 has an internal space 111 for accommodating the light emitting element 120, the heat dissipating board 130, the first fastening member 140 and the second fastening member 160.
  • the transparent tube 110 is made of a material having a high transparency, e.g., glass or plastic.
  • the transparent tube 110 may have other cross-sectional shapes.
  • the cross-sectional shape of the transparent tube 110 may be modified according to actual application requirements.
  • the cross-sectional shape of the transparent tube may be a rectangle or an ellipsoid.
  • the light emitting element 120 is disposed on the heat dissipating board 130, and is a strip-like light source module or another appropriate light source.
  • a light emitting diode (LED) light bar is given as an example.
  • the light emitting element 120 may be fixed on the heat dissipating board 130 through adhering, fastening or buckling means, or may simply be placed on the heat dissipating board 130.
  • the heat dissipating board 130 is for dissipating heat generated by the light emitting element 120, and may be made of a material having good heat conductivity, e.g., a heat dissipating fin formed from aluminum extrusion. Further, the heat dissipating board 130 may also be formed by a material having good workability through a curving or stamping process.
  • the first fastening member 140 and the second fastening member 160 are continual long strips, which have a length greater than that of the transparent tube 110, with two ends of the first fastening member 140 and the second fastening member 160 exceeding the two ends of the transparent tube 110 ( FIG. 1B ).
  • two first fastening members 140 having a shorter length may be adopted and disposed at the two ends of the transparent tube 110, with the two ends of the first fastening members 140 exceeding the two ends of the transparent tube 110.
  • the first fastening member 140 and the second fastening member 160 have a first fastening opening 141 and a second fastening opening 161, respectively.
  • the first fastening member 140 has a protruding end 142 exceeding one end of the transparent tube 110.
  • the first fastening opening 141 is disposed on the protruding end 142.
  • the first fastening opening 141 is spaced from an end plane 110s of the transparent tube 110 by approximately 1 to 3 mm, for example.
  • the assembly of the end caps 150 are promoted.
  • the second fastening member 160 has another protruding end 162 exceeding one end of the transparent tube 110.
  • the second fastening opening 161 is disposed on the protruding end 162.
  • the second fastening opening 161 is spaced from an end plane 110s of the transparent tube 110 by approximately 1 to 3 mm, for example.
  • the first fastening member 140 and the second fastening member 160 respectively have one side connected to two sides of the heat dissipating board 130, in a way that the first fastening member 140, the second fastening member 160 and the heat dissipating board 130 jointly form a U-shaped-like structure.
  • the other side of the first fastening member 140 and the second fastening member 160 are respectively abutted against a rib 112 of the transparent tube 110.
  • the rib 112 limits the amount of rotation of the first fastening member 140 and the second fastening member 160 to thus stabilize the first fastening member 140 and the second fastening member 160.
  • the first fastening member 140 and the second fastening member 160 may be engaged to the heat dissipating board 130 through assembly or buckling means, or may be integrally formed with the heat dissipating board 130. Further, the first fastening member 140, the second fastening member 160 and the heat dissipating board 130 may be made of a same material or different materials. In the embodiment, the first fastening member 140 and the second fastening member 160 are made of a material having good heat conductivity, so as to increase an overall heat dissipating area of the first fastening member 140, the second fastening member 160 and the heat dissipating board 130.
  • FIG. 3 shows an enlarged view of the end cap 150 in FIG. 1B .
  • FIG. 4 shows a top view of the end cap 150 in FIG. 3 .
  • the end cap 150 has an inner sidewall 151, a first fastening part 152 and a second fastening part 153.
  • the first fastening part 152 has a first fixing plane 152a and a first chamfering plane 152b.
  • the second fastening part 153 comprises a second fixing plane 153a and a second chamfering plane 153b.
  • the first fastening part 152 is disposed on the inner sidewall 151 via the first fixing plane 152a, and the first chamfering plane 152b inclines towards the first fixing plane 152a as approaching closer to an opening 150p of the end cap 150.
  • the second fastening part 153 is disposed on the inner sidewall 151 via the second fixing plane 153a, and the second chamfering plane 153b inclines towards the second fixing plane 153a as approaching closer to the opening 150p of the end cap 150.
  • first chamfering plane 152b and the second chamfering plane 153b are inclined planes, for example.
  • the first chamfering plane 152b and the second chamfering plane 153b may respectively be an inclined plane, a curved plane, or a combination thereof.
  • the inclined plane may be a flat surface
  • the curved plane may be a circular cylindrical surface or an ellipsoidal cylindrical surface.
  • geometric outlines of the surfaces of the first chamfering plane 152b and the second chamfering plane 153b may be identical or different.
  • FIG. 5 shows a schematic diagram of an assembly of the fastening parts of the end caps and the fastening openings of the fastening members described above.
  • the first chamfering plane 152a of the first fastening part 152 pushes the first fastening member 140 inwards, such that the first fastening part 152 is allowed to enter the first fastening opening 141.
  • the first fastening part 152 protrudes to exceed the first fastening opening 141 and is thus unlikely to disengage from the first fastening member 140.
  • the first fastening member 140 is flexible so that the first fastening member 140 can be more easily pushed inwards by the first chamfering plane 152b. Details of the process of the second fastening part 153 inserting into the second fastening opening 161 are similar to those of the first fastening part 152 entering the first fastening opening 141, and shall be omitted herein.
  • the light emitting device of the embodiment further comprises an adhesive (not shown) for adhering the first fastening member 140 with the first fastening part 152 of the end cap 150, and for adhering the second fastening member 160 with the second fastening part 153 of the end cap 150.
  • the light emitting device 100 comprises, for example, two sets of fastening structures formed by the fastening members and the fastening parts.
  • one of the two sets of the fastening structures may be omitted. That is to say, either the first fastening part 152 and the first fastening opening 141 (or the first fastening member 140) or the second fastening part 153 and the second fastening opening 161 (or the second fastening member 160) may be omitted.
  • the fastening part of the end cap can be buckled into the fastening opening of the fastening member
  • the fastening part of the end cap of the present invention may have different designs. An example of such is to be described in the following embodiment.
  • FIG. 6 shows an enlarged view of an end cap of a light emitting device according to another embodiment of the present invention.
  • the light emitting device comprises a transparent tube 110 (not shown), a light emitting element 120 (not shown), a heat dissipating board 130 (not shown), a first fastening member 140 (not shown), and an end cap 250.
  • the end cap 250 comprises two sets of fastening parts, each comprising a first fastening part 152 and a lower plate 154.
  • Each of the first fastening parts 152 has an end 152c facing an inner side of the end cap 250.
  • the lower plate 154 is connected to the two ends 152c of the two first fastening parts 152 to reinforce overall rigidness of the two first fastening parts 152 and the lower plate 154.
  • two first chamfering planes 152b of the two first fastening parts 152 are simultaneously buckled into the first fastening opening 141.
  • the number of sets of the fastening parts is not limited by the embodiment of the present invention, and may be one or more sets.
EP13172327.2A 2012-06-29 2013-06-17 Lichtemittierende Vorrichtung Withdrawn EP2679891A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW101123512A TWI499737B (zh) 2012-06-29 2012-06-29 發光裝置

Publications (1)

Publication Number Publication Date
EP2679891A1 true EP2679891A1 (de) 2014-01-01

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Application Number Title Priority Date Filing Date
EP13172327.2A Withdrawn EP2679891A1 (de) 2012-06-29 2013-06-17 Lichtemittierende Vorrichtung

Country Status (3)

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EP (1) EP2679891A1 (de)
CN (1) CN103511876A (de)
TW (1) TWI499737B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146330A1 (de) * 2015-03-19 2016-09-22 Osram Gmbh Halbleiterlampe
CN106764604A (zh) * 2016-12-26 2017-05-31 深圳市鼎城威电子科技有限公司 扣合式灯具
DE102017126257A1 (de) * 2017-11-09 2019-05-09 Ledvance Gmbh Leuchtmittel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204153514U (zh) * 2014-10-08 2015-02-11 深圳市豪恩光电照明有限公司 灯具
CN107023763A (zh) * 2016-01-22 2017-08-08 欧司朗股份有限公司 Led照明装置及其制造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2216859A1 (de) * 2009-02-06 2010-08-11 Tyco Electronics Corporation Abschlusskappenanordnung für eine Lichtröhre
CN102032478A (zh) * 2009-09-28 2011-04-27 Ssec株式会社 发光二极管照明装置
DE202011107492U1 (de) * 2011-11-04 2012-03-01 Alder Optomechanical Corp. Drehvorrichtung einer Lampenröhre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM347524U (en) * 2008-08-08 2008-12-21 Li-Wen Chen Structure of terminal end of LED light tube
TWM384286U (en) * 2009-10-02 2010-07-11 Yuan Jiou Electronic Co Ltd Structure of LED support frame lamp set
US8319437B2 (en) * 2009-11-18 2012-11-27 Pacific Dynamic Modular LED lighting system
CN201858604U (zh) * 2010-09-10 2011-06-08 深圳市朗思照明有限公司 Led日光灯管堵头结构
CN202253008U (zh) * 2011-09-13 2012-05-30 苏州益而益光电有限公司 Led照明灯
CN202203736U (zh) * 2011-09-16 2012-04-25 洪建国 一种日光灯

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2216859A1 (de) * 2009-02-06 2010-08-11 Tyco Electronics Corporation Abschlusskappenanordnung für eine Lichtröhre
CN102032478A (zh) * 2009-09-28 2011-04-27 Ssec株式会社 发光二极管照明装置
DE202011107492U1 (de) * 2011-11-04 2012-03-01 Alder Optomechanical Corp. Drehvorrichtung einer Lampenröhre

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146330A1 (de) * 2015-03-19 2016-09-22 Osram Gmbh Halbleiterlampe
US10502370B2 (en) 2015-03-19 2019-12-10 Ledvance Gmbh Semiconductor lamp
CN106764604A (zh) * 2016-12-26 2017-05-31 深圳市鼎城威电子科技有限公司 扣合式灯具
CN106764604B (zh) * 2016-12-26 2019-03-26 深圳市鼎城威电子科技有限公司 扣合式灯具
DE102017126257A1 (de) * 2017-11-09 2019-05-09 Ledvance Gmbh Leuchtmittel
DE102017126257B4 (de) * 2017-11-09 2019-06-19 Ledvance Gmbh Leuchtmittel
US10718472B2 (en) 2017-11-09 2020-07-21 Ledvance Gmbh Cementing endcap onto straight glass tubes

Also Published As

Publication number Publication date
TW201400747A (zh) 2014-01-01
TWI499737B (zh) 2015-09-11
CN103511876A (zh) 2014-01-15

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