CN2689457Y - LED luminescent device for signal light - Google Patents
LED luminescent device for signal light Download PDFInfo
- Publication number
- CN2689457Y CN2689457Y CN 200420006136 CN200420006136U CN2689457Y CN 2689457 Y CN2689457 Y CN 2689457Y CN 200420006136 CN200420006136 CN 200420006136 CN 200420006136 U CN200420006136 U CN 200420006136U CN 2689457 Y CN2689457 Y CN 2689457Y
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- CN
- China
- Prior art keywords
- luminescent device
- led
- printed circuit
- luminescence chip
- light source
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- 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.)
- Expired - Fee Related
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses an LED luminescent device for a signal light, which comprises a printed circuit board with a ceramic base plate, N LED luminescent chips welded on the printed circuit board, a heat radiator and a transparent outer cover. The utility model is characterized in that the printed circuit is fixed on the front side of the heat radiator, radiating fins are arranged on the back of the heat radiator, fairleads are also arranged on the heat radiator, the electrode lead of the luminescent device is led out via the fairlead, and the transparent outer cover is arranged on the font side of the heat radiator to cover the printed circuit and the fairleads. A metal case is integrated with the heat radiator, which eliminates the contact heat resistance between the heat radiator and the metal case of the prior art. The LED luminescent device for a signal light has advantages of good heat-dissipating effect, strong luminescent intensity, long service life, etc. The LED luminescent device integrates the N LED luminescent chips into two groups of light sources which are connected in serious to respectively use as a main light source and a spare light source, and a light sensitive element for monitoring the working state is respectively mounted near each light source.
Description
Technical field the utility model relates to the traffic signals field, particularly relates to the LED luminescent device that is applicable to signal lamp.
Background technology LED luminescent device can be used as the light source of light signals such as railway traffic signal lamp, highway traffic signal lamp, warning lamp, beacon, navigation light.But the LED luminescent device that is to use the prior art manufacturing is with the signal lamp light source part that still has some deficits.The LED luminescent device of prior art manufacturing all has a shell, and outer casing top surface transparent material manufacturing both can be protected luminescence chip, again can printing opacity.The metal material manufacturing of the bottom surface of shell is used for fixing device and conducts heat.The LED luminescent device that power is bigger must be fixed on the radiator and can use, otherwise can be because of the unfavorable luminous efficiency that influences device of dispelling the heat, even can be because overheated and damage device.Because between luminescence chip and the shell, all have thermal resistance between shell and the radiator, so the heat on the luminescence chip is difficult for distributing, the temperature on the chip is more high than the temperature on the radiator like this, influences the luminous efficiency and the useful life of luminescent device.In addition, the LED luminescent device that prior art is made, its inside has only one group of luminescence chip, and luminescence chip is in case damage will make signal show accidental interruption.In order to overcome this shortcoming, existing led light source signal lamp all be with many low power LED light emitting diode string, use is connected in parallel.Like this, be connected on after a LED light-emitting diode on the circuit damages, though at other LED lumination of light emitting diode of parallel connection, the luminous intensity of signal lamp can weaken, and influences result of use.
Utility model content the purpose of this utility model is to provide a kind of LED luminescent device that is applicable to signal lamp.This LED luminescent device good heat dissipation effect, big, the long service life of luminous intensity.
To achieve these goals, the utility model adopts following technical scheme: a kind of LED luminescent device that is applicable to signal lamp, and it includes the printed circuit board (PCB) of ceramic basal plane, is welded with the individual LED luminescence chip of N (N is the positive integer more than or equal to 1) on the printed circuit board (PCB), radiator, transparent housing; Printed circuit board (PCB) is fixed in the radiator front, and the radiator back side is provided with fin, also is provided with fairlead on the radiator, and the contact conductor of luminescent device (limb) is drawn through fairlead, and transparent housing is installed in the radiator front printed circuit board (PCB) and fairlead are covered.
Adopt technique scheme, because printed circuit board (PCB) is fixed on the radiator, just metal shell is made into the radiator shape, merge metal shell and radiator as a whole, thereby eliminated the contact heat resistance between radiator and the metal shell, so the utility model good heat dissipation effect, luminous intensity are big, long service life.
As of the present utility model perfect, N LED luminescence chip can be integrated into two groups of light sources, every group of light source is composed in series by 1/2N LED luminescence chip; Wherein one group as main light source, and another is organized as standby power source.Under normal circumstances only light main light source, when main light source breaks down, can light standby power source automatically, thereby can not make signal show accidental interruption, improve the reliability of signal optical source.
As of the present utility model further perfect, be separately installed with a light-sensitive element on every group of LED luminescence chip light source next door.Two light-sensitive elements are monitored the operating state of main light source, standby power source respectively.When light source igniting, light-sensitive element detects luminous signal, and the expression light source works is normal; Otherwise when light-sensitive element detected less than signal, the expression light source works was undesired.Like this, the detected fault-signal of light-sensitive element can be lighted standby power source by external control circuit, and can send alarm signal.
Description of drawings Fig. 1 is the front view that the utility model is applicable to the LED luminescent device of signal lamp;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the electrical schematic diagram that the utility model is applicable to the LED luminescent device of signal lamp;
Fig. 4 is the automatic electric principle schematic that main light source is changed standby power source automatically.
The utility model is described in further detail below in conjunction with accompanying drawing for embodiment.
As depicted in figs. 1 and 2, a kind of LED luminescent device that is applicable to signal lamp, it has the printed circuit board (PCB) 1 of ceramic basal plane, is welded with the LED luminescence chip 2 that 8 series and parallels connect on the printed circuit board (PCB) 1, radiator 3, transparent housing 4; Printed circuit board (PCB) 1 is fixed in the front of radiator 3, radiator 3 back sides are provided with fin 31, radiator 3 also is provided with fairlead 32, the limb 5 of luminescent device is drawn through fairlead 32, transparent housing 4 is contained in radiator 3 fronts printed circuit board (PCB) 1 and fairlead 32 is covered, and the inner surface of transparent housing 4 is provided with layer of transparent glue 41.
Because of printed circuit board (PCB) 1 is fixed on the radiator 3, just metal shell is made into metal heat sink, soon metal shell and radiator 3 merge as a whole, thereby eliminated the contact heat resistance between the radiator 3 and metal shell in the prior art, so the utility model good heat dissipation effect, big, the long service life of luminous intensity.
We can be welded on more LED luminescence chip 2 on the printed circuit board (PCB) 1 thick and fast, thereby can improve the luminous intensity on the unit are.
Referring to Fig. 3, as of the present utility model perfect, N LED luminescence chip can be integrated into two groups of light sources, every group of light source is composed in series by 1/2N LED luminescence chip 2; Wherein one group of LED luminescence chip 2-1D1,1D2 ... 1D1/2N is as the luminescence chip 2 of main light source, another group LED luminescence chip 2-2D1,2D2 ... 2D1/2N is as standby power source luminescence chip 2.Under normal circumstances only light main light source, when main light source breaks down, can light standby power source automatically, thereby can not make signal show accidental interruption, improve the reliability of signal optical source.
As Fig. 2, shown in Figure 3, as of the present utility model further perfect, being separately installed with a light-sensitive element 6 on every group of LED luminescence chip 2 light sources next door is R1 and R2.Two light-sensitive elements 6, promptly R1 and R2 monitor the operating state of main light source, standby power source respectively.When light source igniting, light-sensitive element detects luminous signal, and the expression light source works is normal; Otherwise when light-sensitive element detected less than signal, the expression light source works was undesired.Referring to Fig. 4, like this, the detected fault-signal of light-sensitive element can be lighted standby power source by external control circuit, and can send alarm signal.
Claims (4)
1, a kind of LED luminescent device that is applicable to signal lamp includes the printed circuit board (PCB) of ceramic basal plane, is welded with N LED luminescence chip on the printed circuit board (PCB), radiator, transparent housing; It is characterized in that: described printed circuit board (PCB) (1) is fixed in described radiator (3) front, described radiator (3) back side is provided with fin (31), also be provided with fairlead (32) on the described radiator (3), the contact conductor of luminescent device (5) is drawn through described fairlead (32), and it is positive with described printed circuit board (PCB) (1) and described fairlead (32) covering that described transparent housing (4) is installed in described radiator (3).
2, a kind of LED luminescent device that is applicable to signal lamp as claimed in claim 1, it is characterized in that: described N LED luminescence chip (2) is integrated into two groups of light sources, and every group of light source is composed in series by 1/2N LED luminescence chip (2); Wherein one group of LED luminescence chip (2) 1D1,1D2 ... 1D1/2N is as the luminescence chip (2) of main light source, another group LED luminescence chip (2) 2D1,2D2 ... 2D1/2N is as the luminescence chip (2) of standby power source.
3, a kind of LED luminescent device that is applicable to signal lamp as claimed in claim 2 is characterized in that: LED luminescence chip (2) the light source next door of described two groups of light sources is separately installed with a light-sensitive element (6).
4, as any described a kind of LED luminescent device that is applicable to signal lamp in the claim 1 to 3, it is characterized in that: the inner surface of described transparent housing (4) is provided with layer of transparent glue (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420006136 CN2689457Y (en) | 2004-02-25 | 2004-02-25 | LED luminescent device for signal light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420006136 CN2689457Y (en) | 2004-02-25 | 2004-02-25 | LED luminescent device for signal light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689457Y true CN2689457Y (en) | 2005-03-30 |
Family
ID=34668042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420006136 Expired - Fee Related CN2689457Y (en) | 2004-02-25 | 2004-02-25 | LED luminescent device for signal light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689457Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461387C (en) * | 2006-08-17 | 2009-02-11 | 朱宇辉 | LED pixel module set casing with heat dissipating function |
| CN101413652B (en) * | 2007-10-16 | 2010-11-10 | 富士迈半导体精密工业（上海）有限公司 | LED light source device |
| CN101975376A (en) * | 2010-10-08 | 2011-02-16 | 深圳市华星光电技术有限公司 | Luminous source heat-dissipation structure of backlight module |
| CN103563074A (en) * | 2011-04-04 | 2014-02-05 | 陶瓷技术有限责任公司 | Ceramic printed circuit board comprising an al cooling body |
-
2004
- 2004-02-25 CN CN 200420006136 patent/CN2689457Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461387C (en) * | 2006-08-17 | 2009-02-11 | 朱宇辉 | LED pixel module set casing with heat dissipating function |
| CN101413652B (en) * | 2007-10-16 | 2010-11-10 | 富士迈半导体精密工业（上海）有限公司 | LED light source device |
| US7883240B2 (en) | 2007-10-16 | 2011-02-08 | Foxsemicon Integrated Technology, Inc. | Light emitting diode based light source assembly |
| CN101975376A (en) * | 2010-10-08 | 2011-02-16 | 深圳市华星光电技术有限公司 | Luminous source heat-dissipation structure of backlight module |
| CN101975376B (en) * | 2010-10-08 | 2012-07-11 | 深圳市华星光电技术有限公司 | Luminous source heat-dissipation structure of backlight module |
| CN103563074A (en) * | 2011-04-04 | 2014-02-05 | 陶瓷技术有限责任公司 | Ceramic printed circuit board comprising an al cooling body |
| CN103563074B (en) * | 2011-04-04 | 2018-09-14 | 陶瓷技术有限责任公司 | Ceramic printed-circuit board with Al cooling bodies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20110225 |