CN203453848U - Split type condensation LED (light-emitting diode) module - Google Patents
Split type condensation LED (light-emitting diode) module Download PDFInfo
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- CN203453848U CN203453848U CN201320528592.5U CN201320528592U CN203453848U CN 203453848 U CN203453848 U CN 203453848U CN 201320528592 U CN201320528592 U CN 201320528592U CN 203453848 U CN203453848 U CN 203453848U
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Abstract
The utility model relates to the technical field of an LED (light-emitting diode), in particular to a split type condensation LED module, which comprises a printing circuit board and an LED array arranged on the printing circuit board, wherein the periphery of the printing circuit board is provided with condensation plates, the included angle between each condensation plate and the printing circuit board is 100-130 degrees, each condensation plate is in a cambered surface design, the lower part of each condensation plate is provided with a solar battery which is connected with a miniature storage battery, and the miniature storage battery is provided with a control switch, and is communicated with a first circuit, a second circuit and a third circuit. Converted electric energy is stored in the storage battery, the storage battery supplies power to the circuits through the control switch, and when electricity quantity in the storage battery is insufficient, the control switch can be turned off, and other batteries or a common power supply system can be used for supplying power for an LED, so that the split type condensation LED module is very convenient and saves electricity energy.
Description
Technical field
The utility model relates to LED technical field, particularly relates to a kind of split type light-focusing type LED module.
Background technology
In LED comes out by before the eighties these more than 10 years the sixties in 20th century, LED only has several colors of red, yellow, and green, luminous efficiency very low (only approximately 1 lm/W), and brightness ratio is lower, and price is high, and people are just used as the indicator lamp of electronic product.From LED development and application history, the indication application stage that be LED this period.The brightness of LED is to follow the lighting angle of LED to have and must be related to, less its brightness of the angle of LED is higher, if the luminous intensity of the white light at the LED180 degree angle of 5MM only has hundreds of MCD, if the light intensity at 15 degree angles will go to more than 10,000 20,000 MCD's, light intensity has differed tens times, if for illuminating, preferably used high-power LED out of doors, brightness is just higher, single power has 1W, 3W, 5W, also have plenty of with a plurality of high power combinations and become a high-power LED, power goes to hundreds of W to be had.
Existing patent as application number be CN201020688294.9, publication number is the Chinese patent " a kind of LED die set light source device " of CN201954388U, a kind of LED die set light source device is disclosed, it is characterized in that: described LED die set light source device comprises LED die set light source, substrate and LED module lens, the bottom surface of LED module lens is provided with concave surface chamber, LED module lens, LED die set light source is installed on substrate, the concave surface chamber of LED module lens bottom surface covers on LED die set light source, described LED die set light source comprises LED chip and bowl cup-shaped support, LED chip is bonded in the bowl cup of bowl cup-shaped support by high heat conduction bonded adhesives, LED chip is electrically connected to substrate by plain conductor, in the bowl cup of bowl cup-shaped support, be filled with luminous colloid, the barcode LED light source of described LED die set light source for being formed by two or more LED paster light sources, LED module lens is strip lens.Although above-mentioned patent is improved LED matrix structure, but when a fairly large number of LED forms LED module, common control mode is to adopt two-way circuit to control LED, each adjacent LED is controlled by different circuit, so just can conveniently open a wherein road circuit of closure, play the effect that can save electric weight, but simple so a plurality of LED are controlled, can not bring into play the brightness of each LED, after causing closed portion LED, overall brightness is inadequate, and the compensatory device of adjusting overall brightness is also very limited, and the effect of existing LED optically focused is bad, when daytime is sunny, luminous energy is not rationally utilized, cause waste to a certain degree, when LED modular volume is larger, all there are a lot of potential safety hazards in carrying and installation for LED module.
Utility model content
The purpose of this utility model is to overcome prior art existence a plurality of LED are controlled, can not bring into play the brightness of each LED, after causing closed portion LED, overall brightness is inadequate, and the compensatory device of the adjusting overall brightness also effect of very limited and existing LED optically focused is bad, when daytime is sunny, luminous energy is not rationally utilized, cause waste to a certain degree, when LED modular volume is larger, for the carrying of LED module with the problem that all has a lot of potential safety hazards is installed, a kind of split type light-focusing type LED module is proposed.
The utility model is realized by the following technical solutions:
A kind of split type light-focusing type LED module, it is characterized in that: comprise printed circuit board (PCB) and be arranged on the LED array on printed circuit board (PCB), described LED array comprises main light source, angle light source and secondary light source, described main light source is positioned at printed circuit board (PCB) middle part, on four angles of main light source, be respectively arranged with angle light source, between described adjacent angular light source, be provided with secondary light source, main light source and angle light source are rectangle LED array, and described secondary light source is rhombus LED array; In described main light source, LED comprises a LED and the 2nd LED, and a LED and the 2nd LED interval arrange; In the described secondary light source assuming diamond in shape, the first half LED is a LED, and the latter half is the 3rd LED; In the light source of described angle, lateral angle place is a LED, and all the other positions are the 2nd LED; Described the first circuit is connected with a LED, and second circuit is connected with the 2nd LED, and tertiary circuit is connected with the 3rd LED;
Described printed circuit board (PCB) comprises mainboard, gusset and accessory plate, described mainboard is rectangle, four sides of mainboard are provided with draw-in groove, described accessory plate is rectangle, described accessory plate is four, a side of described each accessory plate is provided with fixedly raised line, the side that four accessory plates are provided with fixing raised line respectively with four side clampings of mainboard, all the other sides of described each accessory plate are provided with draw-in groove, described gusset is four, two adjacent side of each gusset are provided with fixedly raised line, between adjacent accessory plate, be provided with a gusset, fixedly raised line and the corresponding clamping of draw-in groove on accessory plate on gusset, between described adjacent mainboard and accessory plate, be provided with locking device, between described adjacent accessory plate and gusset, be provided with locking device,
Described printed circuit board (PCB) surrounding is provided with solar panel, the angle that described solar panel becomes with printed circuit board (PCB) is 100-130 degree, described each solar panel designs for cambered surface, the bottom of described solar panel is provided with solar cell, described solar cell is connected with small battery, on described small battery, be provided with gauge tap, described small battery is communicated with the first circuit, second circuit, tertiary circuit.
Described the first circuit, second circuit and tertiary circuit are for being connected in parallel, and each LED being connected with the first circuit is for being connected in series, and each the 2nd LED being connected with second circuit is for being connected in series, and each the 3rd LED being connected with tertiary circuit is for being connected in series.
A described LED, the 2nd LED and the 3rd LED have included cover body, LED chip, support, and LED chip is put on support, and cover body covers support, and described stentplacement is on printed circuit board (PCB).
Compared with prior art, its advantage is the utility model:
1, the utility model has adopted the structure that solar panel and solar cell combine, and solar panel can carry out polymerization by the light on daytime, thereby and the light after polymerization is converted to electric energy from solar energy is kept at battery.Because the angle of solar panel is 100-130 degree, so can guarantee no matter sunshine is from what angular illumination, all some luminous energy is absorbed by solar panel, and solar panel is designed to the effect that arc has been strengthened optically focused, because the electric energy after conversion is kept in battery, battery is powered to circuit by gauge tap, when in battery, electric weight is not enough, can closing control switch, with other batteries or general distribution system, LED is powered, very convenient, and also saved electric energy.
2, the utility model adopts the printed circuit board (PCB) of split-type structural, when LED modular volume is larger, all very inconvenient for whole carrying and installation, so no matter be for indoor or outdoor, be convenient to transportation and the problem of installing with regard to having become larger LED module to consider, so the utility model utilize draw-in groove and fixedly the clamping of raised line realize split type minute, close, simple in structure, be easy to processing, a complete printed circuit board (PCB) is divided into nine independently platelets, the difficulty of greatly having dwindled carrying and having installed, due to extra locking device being also installed, locking device can be bolt arrangement, lock plate structure or existing locking mechanism, so can be to playing the fixing effect of secondary between each platelet, make between each platelet of printed circuit board (PCB) after assembled more firm.
3, the utility model adopts three kinds of circuit to control whole LED module, and owing to being provided with secondary light source, so secondary light source can be when integrated light source luminance shortage, whole brightness is compensated, and because a LED is the outer that is distributed in whole module, so when opening a LED, whole brightness can maintain good level, if now think that overall brightness is inadequate, can open second circuit, now the 2nd LED can all light, because the quantity of the 2nd LED and a LED is basic identical, so now brightness meeting improves a lot, can be used for outdoor or indoorly having activity or holding party, if but now think that brightness is excessively bright, can close second circuit, open tertiary circuit, because the installation site of the 3rd LED is positioned at the inner side of a LED, so when opening the 3rd LED, the brightness meeting of integrated light source increases, but halation can not expand too much, can effectively control on-the-spot light source effect.And secondary light source of the present utility model is diamond structure, so the halation of a LED of one end is comparatively outstanding outside rhombus, and because angle light source indentation is in secondary light source, so the halation of secondary light source can not produce with the halation of angle light source too much overlapping, so just can guarantee integrated light source brightness evenly.
4, the first circuit of the present utility model, second circuit and tertiary circuit are in parallel, three road circuit can be separately to controlling a LED, the 2nd LED and the 3rd LED, and be independent of each other, and the LED on three road circuit is for connecting, and so just can guarantee that every kind of LED is consistent.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is LED structural representation.
Fig. 3 is printed circuit board (PCB) top view after split.
Fig. 4 is printed circuit board (PCB) side view after split.
In accompanying drawing: printed circuit board (PCB) 1, main light source 2, angle light source 3, secondary light source 4, the one LED5, the 2nd LED6, the 3rd LED7, cover body 8, LED chip 9, support 10, solar panel 11, solar cell 12, mainboard 13, gusset 14, accessory plate 15, draw-in groove 16, fixedly raised line 17, locking device 18.
The specific embodiment
A kind of split type light-focusing type LED module comprises printed circuit board (PCB) 1 and is arranged on the LED array on printed circuit board (PCB) 1, described LED array comprises main light source 2, angle light source 3 and secondary light source 4, described main light source 2 is positioned at printed circuit board (PCB) 1 middle part, on four angles of main light source 2, be respectively arranged with angle light source 3, between described adjacent angular light source 3, be provided with secondary light source 4, main light source 2 and angle light source 3 are rectangle LED array, and described secondary light source 4 is rhombus LED array; In described main light source 2, LED comprises a LED5 and the 2nd LED6, and a LED5 and the 2nd LED6 interval arrange; In the described secondary light source assuming diamond in shape 4, the first half LED is a LED5, and the latter half is the 3rd LED7; In described angle light source 3, lateral angle place is a LED5, and all the other positions are the 2nd LED6; Described the first circuit is connected with a LED5, and second circuit is connected with the 2nd LED6, and tertiary circuit is connected with the 3rd LED7.Described printed circuit board (PCB) surrounding is provided with solar panel 11, the angle that described solar panel 11 becomes with printed circuit board (PCB) is 100-130 degree, described each solar panel 11 designs for cambered surface, the bottom of described solar panel 11 is provided with solar cell 12, described solar cell 12 is connected with small battery, on described small battery, be provided with gauge tap, described small battery is communicated with the first circuit, second circuit, tertiary circuit.The structure that the utility model has adopted solar panel 11 and solar cell 12 to combine, solar panel 11 can carry out polymerization by the light on daytime, thereby and the light after polymerization is converted to electric energy from solar energy is kept at battery.Because the angle of solar panel 11 is 100-130 degree, so can guarantee no matter sunshine is from what angular illumination, all some luminous energy is absorbed by solar panel 11, solar panel 11 is designed to the effect that arc has been strengthened optically focused, because the electric energy after conversion is kept in battery, battery is powered to circuit by gauge tap, when in battery, electric weight is not enough, can closing control switch, with other batteries or general distribution system, LED is powered, very convenient, and also saved electric energy.Described printed circuit board (PCB) comprises mainboard 13, gusset 14 and accessory plate 15, described mainboard 13 is rectangle, four sides of mainboard 13 are provided with draw-in groove 16, described accessory plate 15 is rectangle, described accessory plate 15 is four, a side of described each accessory plate 15 is provided with fixedly raised line 17, the side that four accessory plates 15 are provided with fixing raised line 17 respectively with four side clampings of mainboard 13, described each accessory plate 15 all the other sides are provided with draw-in groove 16, described gusset 14 is four, two adjacent side of each gusset 14 are provided with fixedly raised line 17, between adjacent accessory plate 15, be provided with a gusset 14, fixedly raised line 17 and the corresponding clamping of draw-in groove 16 on accessory plate 15 on gusset 14, between described adjacent mainboard 13 and accessory plate 15, be provided with locking device 18, between described adjacent accessory plate 15 and gusset 14, be provided with locking device 18.The utility model adopts the printed circuit board (PCB) of split-type structural, when LED modular volume is larger, all very inconvenient for whole carrying and installation, so no matter be for indoor or outdoor, be convenient to transportation and the problem of installing with regard to having become larger LED module to consider, so the utility model utilize draw-in groove 16 and fixedly the clamping of raised line 17 realize split type minute, close, simple in structure, be easy to processing, a complete printed circuit board (PCB) is divided into nine independently platelets, the difficulty of greatly having dwindled carrying and having installed, due to extra locking device 18 being also installed, locking device 18 can be bolt arrangement, lock plate structure or existing locking mechanism, so can be to playing the fixing effect of secondary between each platelet, make between each platelet of printed circuit board (PCB) after assembled more firm.The utility model adopts three kinds of circuit to control whole LED module, and owing to being provided with secondary light source 4, so secondary light source 4 can be when integrated light source luminance shortage, whole brightness is compensated, and because a LED5 is the outer that is distributed in whole module, so when opening a LED5, whole brightness can maintain good level, if now think that overall brightness is inadequate, can open second circuit, now the 2nd LED6 can all light, because the quantity of the 2nd LED6 and a LED5 is basic identical, so now brightness meeting improves a lot, can be used for outdoor or indoorly having activity or holding party, if but now think that brightness is excessively bright, can close second circuit, open tertiary circuit, because the installation site of the 3rd LED7 is positioned at the inner side of a LED5, so when opening the 3rd LED7, the brightness meeting of integrated light source increases, but halation can not expand too much, can effectively control on-the-spot light source effect.And secondary light source 4 of the present utility model is diamond structure, so the halation of a LED5 of one end is comparatively outstanding outside rhombus, and because light source 3 indentations in angle are in secondary light source 4, so the halation of secondary light source 4 can not produce with the halation of angle light source 3 too much overlapping, so just can guarantee integrated light source brightness evenly.
A kind of split type light-focusing type LED module, it is characterized in that: comprise printed circuit board (PCB) 1 and be arranged on the LED array on printed circuit board (PCB) 1, described LED array comprises main light source 2, angle light source 3 and secondary light source 4, described main light source 2 is positioned at printed circuit board (PCB) 1 middle part, on four angles of main light source 2, be respectively arranged with angle light source 3, between described adjacent angular light source 3, be provided with secondary light source 4, main light source 2 and angle light source 3 are rectangle LED array, and described secondary light source 4 is rhombus LED array; In described main light source 2, LED comprises a LED5 and the 2nd LED6, and a LED5 and the 2nd LED6 interval arrange; In the described secondary light source assuming diamond in shape 4, the first half LED is a LED5, and the latter half is the 3rd LED7; In described angle light source 3, lateral angle place is a LED5, and all the other positions are the 2nd LED6; Described the first circuit is connected with a LED5, and second circuit is connected with the 2nd LED6, and tertiary circuit is connected with the 3rd LED7.Described printed circuit board (PCB) comprises mainboard 13, gusset 14 and accessory plate 15, described mainboard 13 is rectangle, four sides of mainboard 13 are provided with draw-in groove 16, described accessory plate 15 is rectangle, described accessory plate 15 is four, a side of described each accessory plate 15 is provided with fixedly raised line 17, the side that four accessory plates 15 are provided with fixing raised line 17 respectively with four side clampings of mainboard 13, described each accessory plate 15 all the other sides are provided with draw-in groove 16, described gusset 14 is four, two adjacent side of each gusset 14 are provided with fixedly raised line 17, between adjacent accessory plate 15, be provided with a gusset 14, fixedly raised line 17 and the corresponding clamping of draw-in groove 16 on accessory plate 15 on gusset 14, between described adjacent mainboard 13 and accessory plate 15, be provided with locking device 18, between described adjacent accessory plate 15 and gusset 14, be provided with locking device 18.Described printed circuit board (PCB) surrounding is provided with solar panel 11, the angle that described solar panel 11 becomes with printed circuit board (PCB) is 100-130 degree, described each solar panel 11 designs for cambered surface, the bottom of described solar panel 11 is provided with solar cell 12, described solar cell 12 is connected with small battery, on described small battery, be provided with gauge tap, described small battery is communicated with the first circuit, second circuit, tertiary circuit.Described the first circuit, second circuit and tertiary circuit are for being connected in parallel, and each LED5 being connected with the first circuit is for being connected in series, and each the 2nd LED6 being connected with second circuit is for being connected in series, and each the 3rd LED7 being connected with tertiary circuit is for being connected in series.A described LED5, the 2nd LED6 and the 3rd LED7 have included cover body 8, LED chip 9, support 10, and LED chip 9 is put on support 10, and cover body 8 covers support 10, and described support 10 is positioned on printed circuit board (PCB) 1.The utility model adopts the printed circuit board (PCB) of split-type structural, when LED modular volume is larger, all very inconvenient for whole carrying and installation, so no matter be for indoor or outdoor, be convenient to transportation and the problem of installing with regard to having become larger LED module to consider, so the utility model utilize draw-in groove 16 and fixedly the clamping of raised line 17 realize split type minute, close, simple in structure, be easy to processing, a complete printed circuit board (PCB) is divided into nine independently platelets, the difficulty of greatly having dwindled carrying and having installed, due to extra locking device 18 being also installed, locking device 18 can be bolt arrangement, lock plate structure or existing locking mechanism, so can be to playing the fixing effect of secondary between each platelet, make between each platelet of printed circuit board (PCB) after assembled more firm.The structure that the utility model has adopted solar panel 11 and solar cell 12 to combine, solar panel 11 can carry out polymerization by the light on daytime, thereby and the light after polymerization is converted to electric energy from solar energy is kept at battery.Because the angle of solar panel 11 is 100-130 degree, so can guarantee no matter sunshine is from what angular illumination, all some luminous energy is absorbed by solar panel 11, solar panel 11 is designed to the effect that arc has been strengthened optically focused, because the electric energy after conversion is kept in battery, battery is powered to circuit by gauge tap, when in battery, electric weight is not enough, can closing control switch, with other batteries or general distribution system, LED is powered, very convenient, and also saved electric energy.The utility model adopts three kinds of circuit to control whole LED module, and owing to being provided with secondary light source 4, so secondary light source 4 can be when integrated light source luminance shortage, whole brightness is compensated, and because a LED5 is the outer that is distributed in whole module, so when opening a LED5, whole brightness can maintain good level, if now think that overall brightness is inadequate, can open second circuit, now the 2nd LED6 can all light, because the quantity of the 2nd LED6 and a LED5 is basic identical, so now brightness meeting improves a lot, can be used for outdoor or indoorly having activity or holding party, if but now think that brightness is excessively bright, can close second circuit, open tertiary circuit, because the installation site of the 3rd LED7 is positioned at the inner side of a LED5, so when opening the 3rd LED7, the brightness meeting of integrated light source increases, but halation can not expand too much, can effectively control on-the-spot light source effect.And secondary light source 4 of the present utility model is diamond structure, so the halation of a LED5 of one end is comparatively outstanding outside rhombus, and because light source 3 indentations in angle are in secondary light source 4, so the halation of secondary light source 4 can not produce with the halation of angle light source 3 too much overlapping, so just can guarantee integrated light source brightness evenly.The first circuit of the present utility model, second circuit and tertiary circuit are in parallel, three road circuit can be separately to controlling a LED5, the 2nd LED6 and the 3rd LED7, and be independent of each other, and the LED on three road circuit is for connecting, and so just can guarantee that every kind of LED is consistent.
Claims (3)
1. a split type light-focusing type LED module, it is characterized in that: comprise printed circuit board (PCB) (1) and be arranged on the LED array on printed circuit board (PCB) (1), described LED array comprises main light source (2), angle light source (3) and secondary light source (4), described main light source (2) is positioned at printed circuit board (PCB) (1) middle part, on four angles of main light source (2), be respectively arranged with angle light source (3), between described adjacent angular light source (3), be provided with secondary light source (4), main light source (2) and angle light source (3) are rectangle LED array, described secondary light source (4) is rhombus LED array, in described main light source (2), LED comprises a LED(5) and the 2nd LED(6), a LED(5) and the 2nd LED(6) interval setting, in the described secondary light source assuming diamond in shape (4), the first half LED is a LED(5), the latter half is the 3rd LED(7), in described angle light source (3), lateral angle place is a LED(5), all the other positions are the 2nd LED(6), described the first circuit and a LED(5) be connected, second circuit and the 2nd LED(6) be connected, tertiary circuit and the 3rd LED(7) be connected, described printed circuit board (PCB) comprises mainboard (13), gusset (14) and accessory plate (15), described mainboard (13) is rectangle, four sides of mainboard (13) are provided with draw-in groove (16), described accessory plate (15) is rectangle, described accessory plate (15) is four, a side of described each accessory plate (15) is provided with fixedly raised line (17), the side that four accessory plates (15) are provided with fixing raised line (17) respectively with four side clampings of mainboard (13), all the other sides of described each accessory plate (15) are provided with draw-in groove (16), described gusset (14) is four, two adjacent side of each gusset (14) are provided with fixedly raised line (17), between adjacent accessory plate (15), be provided with a gusset (14), the upper fixedly raised line (17) of gusset (14) and the corresponding clamping of draw-in groove (16) on accessory plate (15), between described adjacent mainboard (13) and accessory plate (15), be provided with locking device (18), between described adjacent accessory plate (15) and gusset (14), be provided with locking device (18), described printed circuit board (PCB) surrounding is provided with solar panel (11), the angle that described solar panel (11) becomes with printed circuit board (PCB) is 100-130 degree, described each solar panel (11) designs for cambered surface, the bottom of described solar panel (11) is provided with solar cell (12), described solar cell (12) is connected with small battery, on described small battery, be provided with gauge tap, described small battery is communicated with the first circuit, second circuit, tertiary circuit.
2. a kind of split type light-focusing type LED module according to claim 1, it is characterized in that: described the first circuit, second circuit and tertiary circuit are for being connected in parallel, each LED(5 being connected with the first circuit) for being connected in series, each the 2nd LED(6 being connected with second circuit) for being connected in series, each the 3rd LED(7 being connected with tertiary circuit) for being connected in series.
3. a kind of split type light-focusing type LED module according to claim 2, it is characterized in that: a described LED(5), the 2nd LED(6) and the 3rd LED(7) included cover body (8), LED chip (9), support (10), LED chip (9) is put on support (10), cover body (8) covers support (10), and described support (10) is positioned on printed circuit board (PCB) (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528592.5U CN203453848U (en) | 2013-08-28 | 2013-08-28 | Split type condensation LED (light-emitting diode) module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528592.5U CN203453848U (en) | 2013-08-28 | 2013-08-28 | Split type condensation LED (light-emitting diode) module |
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| Publication Number | Publication Date |
|---|---|
| CN203453848U true CN203453848U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320528592.5U Expired - Fee Related CN203453848U (en) | 2013-08-28 | 2013-08-28 | Split type condensation LED (light-emitting diode) module |
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| CN (1) | CN203453848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315378A (en) * | 2014-10-22 | 2015-01-28 | 苏州承腾电子科技有限公司 | LED (light emitting diode) illuminating lamp |
-
2013
- 2013-08-28 CN CN201320528592.5U patent/CN203453848U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315378A (en) * | 2014-10-22 | 2015-01-28 | 苏州承腾电子科技有限公司 | LED (light emitting diode) illuminating lamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20160828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |