JPS62178237U - - Google Patents
Info
- Publication number
- JPS62178237U JPS62178237U JP1986066073U JP6607386U JPS62178237U JP S62178237 U JPS62178237 U JP S62178237U JP 1986066073 U JP1986066073 U JP 1986066073U JP 6607386 U JP6607386 U JP 6607386U JP S62178237 U JPS62178237 U JP S62178237U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle lamp
- light
- led
- amount
- leds
- 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.)
- Pending
Links
- 230000003247 decreasing effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の第１の実施例を示すストツプ
ランプの駆動回路図、第２図は本考案の第２の実
施例を示すストツプランプの駆動回路図、第３図
はＬＥＤの対周囲温度光量特性を示すグラフであ
る。
１……ＬＥＤ，１０，１１ａ，１１ｂ……ＬＥ
Ｄ群、４……温度センサ、５，５ａ……スイツチ
コントロール回路、ＳＷＨ，ＳＷＭ，ＳＷＬ，Ｓ
Ｗ１……スイツチ、Ｒ１，Ｒ２，Ｒ３，Ｒ……負
荷抵抗。
Fig. 1 is a stop lamp drive circuit diagram showing a first embodiment of the present invention, Fig. 2 is a stop lamp drive circuit diagram showing a second embodiment of the present invention, and Fig. 3 is an LED light quantity versus ambient temperature. It is a graph showing characteristics. 1...LED, 10, 11a, 11b...LE
Group D, 4... Temperature sensor, 5, 5a... Switch control circuit, SWH, SWM, SWL, S
W1 ...Switch, R1 , R2 , R3 , R...Load resistance.
Claims (1)
であつて、周囲温度を検出する手段と、該検出手
段により検出された周囲温度に応じて前記ＬＥＤ
の光量を制御する手段とを有する車両用灯具の駆
動回路。 (2) 前記制御手段は前記ＬＥＤに対する印加電
圧を増減することによりＬＥＤの光量を制御する
ことを特徴とする実用新案登録請求の範囲第１項
記載の車両用灯具の駆動回路。 (3) 前記ＬＥＤは複数であつて前記制御手段は
前記ＬＥＤの点灯数を増減することによりＬＥＤ
の光量を制御することを特徴とする実用新案登録
請求の範囲第１項記載の車両用灯具の駆動回路。[Claims for Utility Model Registration] (1) A drive circuit for a vehicle lamp using an LED as a light source, comprising: means for detecting ambient temperature;
A drive circuit for a vehicle lamp, comprising means for controlling the amount of light. (2) The driving circuit for a vehicle lamp according to claim 1, wherein the control means controls the amount of light of the LED by increasing or decreasing the voltage applied to the LED. (3) The number of LEDs is plural, and the control means controls the number of LEDs by increasing or decreasing the number of LEDs lit.
A driving circuit for a vehicle lamp according to claim 1, which controls the amount of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986066073U JPS62178237U (en) | 1986-05-02 | 1986-05-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986066073U JPS62178237U (en) | 1986-05-02 | 1986-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62178237U true JPS62178237U (en) | 1987-11-12 |
Family
ID=30903733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986066073U Pending JPS62178237U (en) | 1986-05-02 | 1986-05-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62178237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010171199A (en) * | 2009-01-22 | 2010-08-05 | Panasonic Electric Works Co Ltd | Light emitting diode driving device and lighting instrument using the same, in-cabin lighting device, and lighting device for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714576A (en) * | 1980-07-02 | 1982-01-25 | Sogo Yatsukou Kk | Preparation of imidazole derivative |
-
1986
- 1986-05-02 JP JP1986066073U patent/JPS62178237U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714576A (en) * | 1980-07-02 | 1982-01-25 | Sogo Yatsukou Kk | Preparation of imidazole derivative |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010171199A (en) * | 2009-01-22 | 2010-08-05 | Panasonic Electric Works Co Ltd | Light emitting diode driving device and lighting instrument using the same, in-cabin lighting device, and lighting device for vehicle |
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