CN201487725U - Traffic signal light - Google Patents
Traffic signal light Download PDFInfo
- Publication number
- CN201487725U CN201487725U CN2009201762859U CN200920176285U CN201487725U CN 201487725 U CN201487725 U CN 201487725U CN 2009201762859 U CN2009201762859 U CN 2009201762859U CN 200920176285 U CN200920176285 U CN 200920176285U CN 201487725 U CN201487725 U CN 201487725U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- lamp housing
- light emitting
- emitting diode
- traffic signal
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a traffic signal light. In the traffic signal light, a light shell is made by punching a aluminum sheet with thickness of 34 mm; the left side of the light shell is recessed to form a cone; a circuit board is fixed on the cone of the light shell; a light emitting diode (LED) is welded on the circuit board; the periphery of the LED is filled with transparent epoxy resin to form an sealed structure; and a chevron radiating fin can be placed in an open space of the right side of the circuit board. The utility model has the advantages of favorable and reliable heat dissipation property and obviously prolonged service life.
Description
Technical field
The utility model relates to a kind of novel traffic signal lamp, and it adopts new structure, makes sealing and heat radiation that improvement all be arranged, and belongs to the technical field of signal lamp.
Background technology
Existing traffic lights are welding LED light emitting diodes 2 on common insulating circuit board 1, put into the lamp housing 3 of sealing again, transmit light by transparency plate glass 4,6 sealing of plate glass 4 usefulness rubber weather strips.There is certain shortcoming in the structure of this traffic lights, its sealed space 5 internal thermal resistances are big, owing to do not consider heat dissipation channel be set, the PN junction temperature of the LED light emitting diode in the signal lamp is raise, cause quicken to decay the service life of signal lamp, have only several thousand hours service life, and with to compare gap due several ten thousand hours service life too big, and cost is also too high.
Summary of the invention
The purpose of this utility model is that a kind of traffic lights will be provided, it can overcome the defective of original signal lamp, lamp housing is washed into the taper shape of left side indent with aluminium sheet, the circuit board top loading and with lamp housing heat conduction well, fill to form good sealing with epoxy resin around the LED light emitting diode, therefore improved lamp service life.
The structure of traffic lights is: inside recessed one-tenth one taper shape in its lamp housing 11 left sides, circuit board 12 is fixed on above the taper shape of lamp housing 11, LED light emitting diode 13 is welded on the circuit board 12, be filled to a transparent hermetically-sealed construction with transparent epoxy resin 14 all around, circuit board 12 right sides are the open spaces 15 in the lamp housing 11.In the open spaces 15 of lamp housing 11, place the fin 16 of a chevron.
Traffic lights have following advantage:
1. lamp housing adopts new structure, and circuit board is fixed on above the taper of indent, and circuit board and lamp housing can be conducted heat better, and the right space of lamp housing also can be provided with the chevron fin, and the lamp housing right side is opened wide, and makes radiating effect better.
2. fill with transparent epoxy resin around the LED light emitting diode of casing right part, form the not only transparent but also structure that seals.
3. significantly improve service life.
4. the operating temperature of light fixture is low, and the photoelectric transformation efficiency height and the thermal resistance of LED light emitting diode are low.
Description of drawings
Fig. 1 has the traffic lights schematic diagram now
Fig. 2 the utility model traffic lights schematic diagram
Fig. 3 the utility model traffic lights schematic diagram
The curve map in service life of Fig. 4 LED LED P N junction temperature
The specific embodiment
By Fig. 2, lamp housing 11 usefulness thickness are inwardly coning recessed on the left of the aluminium sheet punching press of 3-4mm is made, and LED light emitting diode 13 is contained on the circuit board 12 of metallic substrates, and this circuit board 12 just is fixed on above the taper shape of lamp housing 11; On circuit board 12 right sides, lamp housing 11 forms a space 15 of opening wide, and makes it form a good passage of heat, fills with transparent epoxy resin around the LED light emitting diode 13, forms the not only transparent but also structure that seals.
By Fig. 3, one chevron fin 16 is set in the space of opening wide 15 of lamp housing 11 inside.
When the traffic lights operate as normal, the PN junction of LED light emitting diode 13 produces heat, by being connected and the effect of chevron fin of metallic circuit 12 and lamp housing 11, well heat is passed to and distribute, so just make the heat of signal lamp wick keep a lower temperature, signal lamp makes LED light emitting diode 13 obtain higher luminous flux and photoelectric transformation efficiency because heat radiation is good and sealing promptly significantly improves its service life, and the temperature of traffic lights reduces.The thermal characteristics of LED light emitting diode 13 can directly have influence on its operating temperature and luminous efficiency and emission wavelength and colour temperature is stable and service life.As shown in Figure 4, wherein axis of abscissas is represented working life, and axis of ordinates is represented the operating temperature of PN junction, and curve is then represented service life.
Claims (2)
1. traffic lights, form by lamp housing and LED light emitting diode and circuit board, it is characterized in that inside recessed one-tenth one taper shape in lamp housing (11) left side, circuit board (12) is fixed on above the taper shape of lamp housing (11), LED light emitting diode (13) is welded on the circuit board (12), use transparent epoxy resin (14) to be filled to a transparent hermetically-sealed construction all around, circuit board (12) right side is the open spaces (15) in the lamp housing (11).
2. traffic lights according to claim 1 is characterized in that placing the fin (16) of a chevron in the open spaces (15) of lamp housing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762859U CN201487725U (en) | 2009-09-08 | 2009-09-08 | Traffic signal light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201762859U CN201487725U (en) | 2009-09-08 | 2009-09-08 | Traffic signal light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487725U true CN201487725U (en) | 2010-05-26 |
Family
ID=42426604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201762859U Expired - Fee Related CN201487725U (en) | 2009-09-08 | 2009-09-08 | Traffic signal light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111047888A (en) * | 2019-12-25 | 2020-04-21 | 杭州昕华信息科技有限公司 | Protection type movable traffic signal lamp |
-
2009
- 2009-09-08 CN CN2009201762859U patent/CN201487725U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111047888A (en) * | 2019-12-25 | 2020-04-21 | 杭州昕华信息科技有限公司 | Protection type movable traffic signal lamp |
| CN111047888B (en) * | 2019-12-25 | 2021-01-29 | 杭州昕华信息科技有限公司 | Protection type movable traffic signal lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100526 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |