NL2002139C2 - Improved LED arrangement and lamp assemblies. - Google Patents

Improved LED arrangement and lamp assemblies. Download PDF

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Publication number
NL2002139C2
NL2002139C2 NL2002139A NL2002139A NL2002139C2 NL 2002139 C2 NL2002139 C2 NL 2002139C2 NL 2002139 A NL2002139 A NL 2002139A NL 2002139 A NL2002139 A NL 2002139A NL 2002139 C2 NL2002139 C2 NL 2002139C2
Authority
NL
Netherlands
Prior art keywords
lamp
guide structure
lamp assembly
led
light
Prior art date
Application number
NL2002139A
Other languages
Dutch (nl)
Inventor
Yu-Chou Houng
Peter Zwaan
Original Assignee
Ec Vastgoed B V
Yu-Chou Houng
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 Ec Vastgoed B V, Yu-Chou Houng filed Critical Ec Vastgoed B V
Priority to NL2003481A priority Critical patent/NL2003481C2/en
Application granted granted Critical
Publication of NL2002139C2 publication Critical patent/NL2002139C2/en
Priority to EP09173914A priority patent/EP2180235A1/en

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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]

Description

Improved LED arrangement and lamp assemblies
The present invention relates to a LED arrangement for use in a lamp assembly, to the lamp assembly comprising a number of such 5 LED arrangements and to further lamp assemblies.
The object of the invention is to provide a LED arrangement allowing to have a more efficient focused radiation pattern with a radiation angle which is adaptable.
10
To reach this object, the LED arrangement according to the invention is distinguished by comprising: - a light emitting diode for emitting an amount of light; - a guide structure arranged above the light emitting diode, the 15 guide structure having an input section directed towards the light emitting diode and an output section, wherein the guide structure is designed for grouping substantially the complete amount of light within a certain radiation angle; and preferably - a lens mounted at the output side of the guide structure, said 20 lens being arranged for providing efficient focusing of the light entering the lens.
Advantageous embodiments of the invention are disclosed in claims 2-16.
25
According to a preferred embodiment the guide structure is a hollow metal tooling with an adapted shape, preferably made from copper. The guide structure has for example a conical input section narrowing in the direction away from the light emitting 30 diode, and a conical output section narrowing in the direction away from the lens. In that way the light can leave the tooling according a specific radiation pattern with a wide or narrow angle depending on the location to be lit.
35 According to a further developed embodiment the conical output section has a center line, and an outer surface making an angle with the center line, wherein the angle lays between 2 degrees and 85 degrees depending on the required radiation pattern of 2 the arrangement. For an angle of 2 degrees a narrow spot will be lit, while for an angle of 85 degrees a large area will be lit. According to an exemplary embodiment the conical output section can be asymmetric, wherein the angle varies so that an 5 asymmetric radiation pattern is obtained.
Preferably the guide structure is substantially diabolic. This provides for a very efficient and compact guiding of the light 10 According to a further aspect of the invention the lens has a substantially flat base with dimensions which correspond substantially with the dimensions of the output section of the guide structure. The lens is preferably fixed on the guide structure using a glue, in particular an epoxy glue.
15
The invention further relates to a lamp assembly comprising a lamp body and a number of LED arrangements according to the invention, said number of LED arrangements being fixed in the lamp body for obtaining a certain total light pattern of the lamp 20 assembly. According to a preferred embodiment the body is a tube-like body which is provided with lamp caps and electrode pins according to the same international standards as common lamp tubes .
25 Conventional LED light is generally configured by directly mounting a control wiring board into a space formed by a circular tube made of plastic, or into a closed space formed by a base and a cover. The PCB is suspended or directly set within the base. Control elements of the LED light are provided in the lower 30 portion of the PCB. Heat elimination from the PCB to the outside is by means of thermal conduction by air. The difficulty in heat elimination of the LEDs is a problem. Accordingly, the life of the LEDs is shortened due to the excessively high temperature of the LED.
Another purpose of the invention is to provide a lamp assembly with a good heat elimination performance, a simple configuration, 35 3 a good illumination performance, a small size, a low cost and also a good appearance.
This is achieved by a lamp assembly comprising a tube shaped lamp 5 body and a plurality of LEDs being fixed on a PCB in the lamp body, said lamp body comprising a metal lower part, and a transparent cover part, said metal lower part being arranged for transporting the heat of the plurality of LEDs to the outside.
10 According to a preferred embodiment the PCB is mounted on the metal lower part with insertion of a heat conducting, electrically insulating layer, for example a layer of the silicon type.
15 According to a preferred embodiment the lower part is made of aluminum or an aluminum alloy and the cover part is made from PC. The lower part and the cover part preferably extend over substantially the complete length of the tube like body and have substantially a semi-circular cross section. The cover part and 20 the lower part can further be adapted so that the cover part can be snap-fitted on the lower part.
According to a further developed embodiment the lower part is provided with ribs to improve cooling thereof and at the same 25 time strengthen the lower part.
According to another aspect of the invention the lamp assembly comprises a main body, said main body being constituted by a metal base, a transparent cover mounted on the metal base, a PCB 30 provided within the metal base, and an LED light provided on the PCB, wherein a heat-conductive and electrical-insulated layer is attached in a heat-conductive way between the bottom surface of the PCB and the metal base.
In said lamp assembly, the overall profile of the main body may 35 be a long tube shape.
In an embodiment of the lamp assembly, the cross section profile of the main body may be circular or rectangular.
4
In an embodiment of the lamp assembly, there may be lamp holders provided on the both ends of the main body.
5 In an embodiment of the lamp assembly, cross sections of the metal base and the transparent cover are half circles which buckle with each other in a symmetric way, and an integral fitting plate is provided in the metal base, the PCB and the heat-conductive and electrical-insulated layer which are attached with each other 10 being fixed on the fitting plate.
In an embodiment of the lamp assembly, control elements of the LED lights are provided on both end portions O f PCB within the lamp holders.
15
With the above described configuration according to the invention, the heat-conductive and electrical-insulated layer made of silicon material provided between the PCB and the metal base enables the heat of the PCB to be directly conducted to the 20 metal base using the fact that the metal base are able to rapidly conduct heat, and therefore the temperature inside the light body is significantly decreased. In addition, the metal base and the transparent cover constitute the main body in a long tubular shape, with the profile of the cross sections being in a circular 25 shape, which enables the effective use of the spaces in the lamp holders on both ends for accommodating the control elements, and therefore the overall appearance is good and the configuration is compact. Furthermore, the corresponding transparent cover has a cross section in a half circle shape, which enhances the 30 illuminating performance and focusing performance.
The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of the present invention. The above and other advantages, features and objects 35 of the invention will become more apparent and the invention will be better understood from the following detailed description when read in conjunction with accompanying drawings in which: 5
Figure 1 is a schematic longitudinal section of an embodiment of a lamp assembly according to the invention;
Figure 2 is a schematic perspective view of the first embodiment, 5 partly exploded;
Figure 3 is a cross section along line A-A of figure 1;
Figure 4 is a cross section of a second embodiment of a lamp 10 assembly of the invention;
Figure 5 is a perspective view of an end cap of the first embodiment; 15 Figure 6 is an example of the driver circuit for powering the LED components of a lamp assembly according to the invention;
Figure 7 is a detailed schematic drawing of an embodiment of a LED chip mounting according to the invention; 20
Figure 8(A)-(C) illustrate schematically how the radiation pattern of the emitted light of a LED can be changed with an embodiment of the invention; 25 Figures 9-11 illustrate a method for preparing a number of LED arrangements of the invention in a number of rows for mounting on a PCB.
Figures 1 to 3 illustrate an embodiment of a lamp assembly 30 according to an embodiment of the invention. The embodiment of figure 1 comprises a cylindrical tube-like body 1 typically with the dimensions of a standard fluorescent tube (TL-D). The tube-like body consists of two parts: an aluminum-alloy lower part 11 and a cover part 12, typically fabricated from a PC 35 (Polycarbonate) material. The aluminum-alloy lower part is provided with a support part 11a. Cross sections of the metal base 11 and the transparent cover 12 are half circles which buckle 6 with each other in a symmetric way, and the support part is here an integral fitting plate 11a provided in the metal base 11.
In the tube-like body 1 there are provided a number of LED 5 components 14 which are here arranged in three rows. The skilled person will understand that this can be any number of rows depending of the dimensions of the lamp assembly, the required lighting, the dimensions of the LED components, etc.
10 The LED components are mounted on a printed circuit board (PCB) 13. The PCB 13 is supported on the lower part 11 with the intersection of a layer 15 for electric isolation on the one hand and heat transport on the other hand between the PCB 13 and the lower part 11. Layer 15 is for example fabricated in a silicon 15 type of material.
The heat-conductive and electrical-insulated layer 15 is attached in a heat-conductive way between the bottom surface of the PCB 13 and the fitting plate 11a of the metal base 11. The 20 PCB 13 and the heat-conductive and electrical-insulated layer 15 which are attached with each other are fixed on the fitting plate 11a.
The end parts of the body 1 are closed with end caps 16. The end 25 caps 16 are for example adapted for lamp holders of the T8-type. A detailed perspective view of such an end cap 16 is shown in figure 5. The end cap basically consists of an end part 19 and two fixation sections 17, 18 extending inwardly in the body 1. A first fixation section 17 which can be fitted in the cover part 30 12 and a second fixation section 18 which can be fitted in the lower part 11.
Note that the lower part 11 is preferably fabricated in a material with good heat transport properties, but this material can be 35 different from aluminum or an aluminum alloy. As shown in the figures the lower part can be provided on its outside surface with a corrugated profile in order to further improve cooling of the lamp assembly.
7
The parts 15 schematically represent components of a driver circuit (i.e. a constant current power unit) for the LED components 14 on the PCB 13. An example of such a driver circuit 5 is shown in figure 6. The control elements 15 can be provided on both end portions of the PCB 13 partly within the end caps 16.
Fig. 4 shows an LED fluorescent tube according to the second 10 embodiment, which comprises a long tube shaped main body 1. The main body 1 is constituted by a long channel-shaped metal base 11, a transparent cover 12 mounted on the metal base 11, a PCB 13 provided within the metal base 11, and an LED light 14 provided on the PCB 13. A cross section of the metal base 11 is in a 15 rectangular shape, and a cross section of the transparent cover 12 is in a half circular shape. A heat-conductive and electrical-insulated layer 15 is attached in a heat-conductive way between the bottom surface of the PCB 13 and an inner wall surface of a bottom plate of the metal base 11. The 20 heat-conductive and electrical-insulated layer 15 is made of silicon. End caps 16 are provided on both ends of the main body 1. Control elements of the LED light 14 are provided on both end portions of the PCB 13. When the fluorescent tube is in use, the main body 1 is fitted in a lamp holder via connection pins 25 on external end portions of the lamp holders.
Now the details of an embodiment of a LED arrangement will be set out in detail with reference to figure 7. A LED chip 20 is mounted on a base, typically inside a cup 25 of a stent as is 30 known in the art. The light emitted by the LED chip is bundled via a hollow metal guide structure 21, preferably in the form of diabolic metal tooling, for example made in copper. A lens 23 is fixed on the guide structure 21 preferably using an epoxy glue 24. The form of the guide structure should be adapted to 35 group substantially all the light emitted by the LED chip and to guide the light within a certain radiation angle before entering the lens 23.
8
As shown in figure 8 (A) the opening angle a of the output section of the guide structure 21 can be varied in function of the desired radiation pattern. Further the base dimensions of the lens 23 can be adapted accordingly. Figure 8(B) shows an embodiment 5 with a small opening angle Oil for obtaining a narrow spot of light while figure 8(C) shows a wide opening angle ft2 for obtaining a larger lit area.
Finally figures 9-11 illustrate how the LED arrangement shown 10 in figure 7 is prepared for mounting in a number of rows on a PCB 13. Figure 9 is a top view of the stents and connection lines used for connecting the LED arrangements 20-24 on the PCB 13. The numbers 26 and 27 refer to the stents for connecting a LED placed in cup 25 with the positive and negative side of the power 15 supply. Reference 29 refers to further connection lines for connecting the different LEDs. The metal is cut where necessary after packaging of the LEDs. The housing 30, 30' placed over the stents is shown in figures 10 and 11. The height of the cap-like housing 30, 30' is chosen in function of the radiation 20 angle, and figure 10 shows a housing for a total radiation angle of 75/80 degrees while figure 11 shows a variant for a total radiation angle of 25/30 degrees with a higher housing 30'. Figures 10 and 11 further show a stop element 32 for holding the stents 27, 28. Element 33, 33' is a module article with a first 25 side on which the LEDs are mounted and a back side on which the stop elements 32 are mounted.
While the principles of the invention have been set out above in connection with specific embodiments, it is to be clearly 30 understood that this description is merely made by way of example and not as a limitation of the scope of protection which is determined by the appended claims.

Claims (30)

1. LED inrichting voor gebruik in een lampsamenstel omvattende: 5. een licht emitterende diode voor het uitzenden van een hoeveelheid licht; - een metalen geleidingsstructuur aangebracht boven de licht emitterende diode, welke geleidingsstructuur een ingangssectie heeft die gericht is naar de licht emitterende 10 diode en een uitgangssectie, waarbij de geleidingsstructuur ontworpen is om de volledige hoeveelheid licht in hoofdzaak te groeperen binnen een bepaalde stralingshoek.A LED device for use in a lamp assembly comprising: 5. a light-emitting diode for emitting an amount of light; - a metal guide structure arranged above the light-emitting diode, which guide structure has an input section that faces the light-emitting diode and an output section, wherein the guide structure is designed to substantially group the entire amount of light within a certain beam angle. 2. Inrichting volgens conclusie 1, verder omvattende: - een lens die gemonteerd is bij de uitgangszijde van de 15 geleidingsstructuur, welke lens ingericht is voor het verschaffen van een doeltreffende focussering van het licht dat in de lens binnentreedt.2. Device as claimed in claim 1, further comprising: - a lens which is mounted at the exit side of the guide structure, which lens is adapted to provide an efficient focusing of the light entering the lens. 3. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de geleidingsstructuur een holle 20 metalen uitrusting met een aangepaste vorm is.3. Device as claimed in any of the foregoing claims, characterized in that the guide structure is a hollow metal equipment with a modified shape. 4. Inrichting volgens conclusie 3, met het kenmerk, dat de geleidingsstructuur een holle buisvormige sectie is met een variabele diameter, zodanig dat de ingangssectie aangepast is aan de afmetingen van de licht emitterende 25 diode en dat de uitgangssectie aangepast is aan de vereiste stralingshoek.4. Device as claimed in claim 3, characterized in that the guide structure is a hollow tubular section with a variable diameter, such that the input section is adapted to the dimensions of the light-emitting diode and that the output section is adapted to the required radiation angle. 5. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de geleidingsstructuur vervaardigd is uit koper.Device as claimed in any of the foregoing claims, characterized in that the guide structure is made of copper. 6. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de geleidingsstructuur een conische ingangssectie heeft die vernauwt in de richting weg van de licht emitterende diode. 2002139Device according to one of the preceding claims, characterized in that the guide structure has a conical input section that narrows in the direction away from the light-emitting diode. 2002139 7. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de geleidingsstructuur een conische uitgangssectie heeft die vernauwt in de richting weg van de lens.7. Device as claimed in any of the foregoing claims, characterized in that the guide structure has a conical exit section that narrows in the direction away from the lens. 8. Inrichting volgens conclusie 7, waarbij de conische uitgangssectie een middellijn heeft en een buitenvlak heeft dat een hoek maakt met de middellijn, met het kenmerk, dat de hoek gelegen is tussen 2 graden en 85 graden afhankelijk van het vereiste stralingspatroon van de inrichting.Device as claimed in claim 7, wherein the conical exit section has a center line and an outer surface which makes an angle with the center line, characterized in that the angle is between 2 degrees and 85 degrees depending on the required radiation pattern of the device. 9. Inrichting volgens conclusie 7 of 8, waarbij de conische uitgangssectie een middellijn heeft, en een buitenvlak dat een hoek maakt met de middellijn, met het kenmerk, dat de conische uitgangssectie asymmetrisch is, waarbij de hoek zodanig varieert dat een asymmetrisch 15 stralingspatroon verkregen wordt.9. Device as claimed in claim 7 or 8, wherein the conical exit section has a center line, and an outer surface which makes an angle with the center line, characterized in that the conical exit section is asymmetrical, the angle varying such that an asymmetrical radiation pattern is obtained is becoming. 10. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de geleidingsstructuur in hoofdzaak de vorm heeft van een diabolo.Device as claimed in any of the foregoing claims, characterized in that the guide structure is substantially in the form of a diabolo. 11. Inrichting volgens één der voorgaande conclusies, 20 met het kenmerk, dat de lens een in hoofdzaak vlakke basis heeft met afmetingen die in hoofdzaak overeenstemmen met de afmetingen van de uitgangssectie van de geleidingsstructuur.11. Device as claimed in any of the foregoing claims, characterized in that the lens has a substantially flat base with dimensions that substantially correspond to the dimensions of the exit section of the guide structure. 12. Inrichting volgens één der voorgaande conclusies, met het kenmerk, dat de lens bevestigd is op de 25 geleidingsstructuur gebruikmakend van een lijm, in het bijzonder een epoxylijm.12. Device as claimed in any of the foregoing claims, characterized in that the lens is mounted on the guide structure using an adhesive, in particular an epoxy adhesive. 13. Lampsamenstel omvattende een lamplichaam en een aantal LED inrichtingen volgens één der voorgaande conclusies, welk aantal LED inrichtingen bevestigd is in het 30 lamplichaam.13. A lamp assembly comprising a lamp body and a number of LED devices according to any one of the preceding claims, which number of LED devices is mounted in the lamp body. 14. Lampsamenstel volgens conclusie 13, met het kenmerk, dat het aantal LED inrichtingen gerangschikt is volgens een aantal rijen. mA lamp assembly according to claim 13, characterized in that the number of LED devices is arranged according to a number of rows. m 15. Lampsamenstel volgens conclusie 13 of 14, met het kenmerk, dat lichaam een buisvormig lichaam is dat voorzien is van lampafsluitkappen en elektrodepinnen volgens dezelfde internationale standaarden als de gebruikelijke lampbuizen.A lamp assembly as claimed in claim 13 or 14, characterized in that the body is a tubular body provided with lamp cover caps and electrode pins according to the same international standards as the conventional lamp tubes. 16. Lampsamenstel volgens één der conclusies 12-15, met het kenmerk, dat een aandrijfschakeling voorzien is voor het aantal LED inrichting in het lichaam.A lamp assembly as claimed in any one of claims 12-15, characterized in that a driving circuit is provided for the number of LED devices in the body. 17. Lampsamenstel omvattende een buisvormig lamplichaam en een aantal LED's die bevestigd zijn op een printplaat 10 (PCB) in het lamplichaam, met het kenmerk, dat het lamplichaam een metalen onderste gedeelte en een transparant afdekgedeelte omvat, welk metalen onderste gedeelte ingericht is voor het naar buiten transporteren van de warmte van het aantal LED's.17. A lamp assembly comprising a tubular lamp body and a number of LEDs mounted on a printed circuit board 10 (PCB) in the lamp body, characterized in that the lamp body comprises a metal lower part and a transparent cover part, which metal lower part is adapted to transporting the heat from the number of LEDs to the outside. 18. Lampsamenstel volgens conclusie 17, met het kenmerk, dat het onderste gedeelte vervaardigd is uit aluminium of uit een aluminiumlegering.18. A lamp assembly as claimed in Claim 17, characterized in that the lower part is made of aluminum or an aluminum alloy. 19. Lampsamenstel volgens conclusie 17 of 18, met het kenmerk, dat de printplaat gemonteerd is op het metalen 20 onderste gedeelte met tussenvoeging van een de warmte geleidende, elektrisch isolerende laag.19. A lamp assembly as claimed in claim 17 or 18, characterized in that the printed circuit board is mounted on the metal lower part with the insertion of a heat-conducting, electrically insulating layer. 20. Lampsamenstel volgens één der conclusies 17-19, met het kenmerk, dat de de warmte geleidende, elektrisch isolerende laag van het siliciumtype is.A lamp assembly according to any one of claims 17-19, characterized in that the heat-conducting, electrically insulating layer is of the silicon type. 21. Lampsamenstel volgens één der conclusies 17-20, met het kenmerk, dat het onderste gedeelte en het afdekgedeelte zich uitstrekken over in hoofdzaak de volledige lengte van het buisvormig lichaam.A lamp assembly as claimed in any one of claims 17-20, characterized in that the lower part and the cover part extend over substantially the full length of the tubular body. 22. Lampsamenstel volgens één der conclusies 17-21, met 30 het kenmerk, dat het afdekgedeelte vervaardigd is uit PC.22. A lamp assembly according to any one of claims 17-21, characterized in that the cover part is made of PC. 23. Lampsamenstel volgens één der conclusies 17-22, met het kenmerk, dat het afdekgedeelte op het onderste gedeelte vastgeklikt is.A lamp assembly according to any one of claims 17 to 22, characterized in that the cover portion is snapped onto the lower portion. 24. Lampsamenstel volgens één der conclusies 17-23, met het kenmerk, dat het onderste gedeelte voorzien is van ribben om het afkoelen van het onderste gedeelte te verbeteren.A lamp assembly according to any one of claims 17 to 23, characterized in that the lower portion is provided with ribs to improve cooling of the lower portion. 25. Een LED TL-buis omvattende een hoofdlichaam (1), welk hoofdlichaam (1) bestaat uit een metalen basis (11), een transparant deksel (12) dat gemonteerd is op de metalen basis (11), een printplaat (13) die voorzien is in de metalen basis (11), en een LED verlichting (14) die voorzien 10 is op de printplaat (13), met het kenmerk, dat een warmtegeleidende en elektrisch isolerende laag (15) op een warmtegeleidende wijze bevestigd is tussen het ondervlak van de printplaat (13) en de metalen basis (11) .An LED fluorescent tube comprising a main body (1), which main body (1) consists of a metal base (11), a transparent cover (12) mounted on the metal base (11), a printed circuit board (13) which is provided in the metal base (11), and an LED lighting (14) which is provided on the printed circuit board (13), characterized in that a heat-conducting and electrically insulating layer (15) is attached in a heat-conducting manner between the bottom surface of the printed circuit board (13) and the metal base (11). 26. LED TL-buis volgens conclusie 25, met het kenmerk, 15 dat het algemeen profiel van het hoofdlichaam (1) een lange stripvorm is.26. LED fluorescent tube according to claim 25, characterized in that the general profile of the main body (1) is a long strip shape. 27. LED TL-buis volgens conclusie 25, met het kenmerk, dat het dwarsdoorsnedeprofiel van het hoofdlichaam (1) cirkelvormig of rechthoekig is.The LED fluorescent tube according to claim 25, characterized in that the cross-sectional profile of the main body (1) is circular or rectangular. 28. LED TL-buis volgens conclusie 25, met het kenmerk, dat er lamphouders (16) voorzien zijn aan beide einden van het hoofdlichaam (1).LED fluorescent tube according to claim 25, characterized in that lamp holders (16) are provided at both ends of the main body (1). 29. LED TL-buis volgens één der conclusies 25-28, met het kenmerk, dat de dwarsdoorsneden van de metalen basis 25 (11) en van het transparant deksel (12) halve cirkels zijn die op symmetrische wijze in elkaar vastzetbaar zijn, en dat een integrale steunplaat (11a) voorzien is in de metalen basis (11), waarbij de printplaat (13) en de warmtegeleidende en elektrisch isolerende laag (15) die 30 onderling met elkaar verbonden zijn, bevestigd zijn op de steunplaat (11a).29. LED fluorescent tube according to one of claims 25-28, characterized in that the cross-sections of the metal base 25 (11) and of the transparent cover (12) are semicircles that can be locked together symmetrically, and that an integral support plate (11a) is provided in the metal base (11), the printed circuit board (13) and the thermally conductive and electrically insulating layer (15) mutually connected to each other being attached to the support plate (11a). 30. LED TL-buis volgens één der conclusies 25-29, met het kenmerk, dat regelelementen van de LED verlichting (14) voorzien zijn op beide eindgedeelten van de printplaat (13) in de lamphouders (16). 2no2139An LED fluorescent tube according to any one of claims 25 to 29, characterized in that control elements of the LED lighting (14) are provided on both end portions of the printed circuit board (13) in the lamp holders (16). 2no2139
NL2002139A 2008-03-13 2008-10-24 Improved LED arrangement and lamp assemblies. NL2002139C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2003481A NL2003481C2 (en) 2008-10-24 2009-09-14 Improved led arrangement and lamp assemblies.
EP09173914A EP2180235A1 (en) 2008-10-24 2009-10-23 Improved LED arrangement and lamp assemblies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200820044869 2008-03-13
CNU2008200448696U CN201190977Y (en) 2008-03-13 2008-03-13 LED fluorescent tube

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NL2002139C2 true NL2002139C2 (en) 2009-09-25

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NL2002139A NL2002139C2 (en) 2008-03-13 2008-10-24 Improved LED arrangement and lamp assemblies.

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