JPH0441655U - - Google Patents
Info
- Publication number
- JPH0441655U JPH0441655U JP8200290U JP8200290U JPH0441655U JP H0441655 U JPH0441655 U JP H0441655U JP 8200290 U JP8200290 U JP 8200290U JP 8200290 U JP8200290 U JP 8200290U JP H0441655 U JPH0441655 U JP H0441655U
- Authority
- JP
- Japan
- Prior art keywords
- raindrop sensor
- temperature
- heating means
- detection signal
- temperature detection
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
第１図は本考案の一実施例を示す斜視図、第２
図は本考案の一実施例を示す回路図、第３図は本
考案の第２の実施例を示す回路図、第４図は従来
例を示す斜視図である。
１……雨滴センサ本体、２……発光素子、３…
…受光素子、４……熱線メツシユ、５……パルス
ドライブ回路、６……パワーコントロール部、７
……光電変換アンプ、９……検知領域部、１０…
…温度コントロール回路、１１……寒冷判定回路
、１２……温度センサ、１３……スイツチ。
Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a circuit diagram showing one embodiment of the present invention, FIG. 3 is a circuit diagram showing a second embodiment of the present invention, and FIG. 4 is a perspective view showing a conventional example. 1...Raindrop sensor body, 2...Light emitting element, 3...
...Light receiving element, 4...Hot wire mesh, 5...Pulse drive circuit, 6...Power control section, 7
...Photoelectric conversion amplifier, 9...Detection area section, 10...
...Temperature control circuit, 11...Cold determination circuit, 12...Temperature sensor, 13...Switch.
Claims (1)
サにおいて、前記検知領域を所定の隙間を有する
金属製カバーで覆うとともに該カバーを加熱手段
により加熱するようにしたことを特徴とする雨滴
センサ。 (2) 外温を検出する温度検出手段と、前記外温
が所定温度以下になると低温検知信号を出力する
寒冷判定手段とを設け、該低温検知信号により前
記加熱手段を作動させることを特徴とする請求項
１記載の雨滴センサ。[Claims for Utility Model Registration] (1) In a raindrop sensor that detects the amount of raindrops within a detection area, the detection area is covered with a metal cover having a predetermined gap, and the cover is heated by a heating means. A raindrop sensor characterized by: (2) It is characterized by providing a temperature detection means for detecting the outside temperature and a cold determination means for outputting a low temperature detection signal when the outside temperature falls below a predetermined temperature, and operating the heating means in response to the low temperature detection signal. The raindrop sensor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8200290U JPH0441655U (en) | 1990-07-31 | 1990-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8200290U JPH0441655U (en) | 1990-07-31 | 1990-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0441655U true JPH0441655U (en) | 1992-04-08 |
Family
ID=31628433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8200290U Pending JPH0441655U (en) | 1990-07-31 | 1990-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7736051B2 (en) | 2004-03-30 | 2010-06-15 | Yamatake Corporation | Thermoelectric device and mirror surface state detection device |
-
1990
- 1990-07-31 JP JP8200290U patent/JPH0441655U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7736051B2 (en) | 2004-03-30 | 2010-06-15 | Yamatake Corporation | Thermoelectric device and mirror surface state detection device |
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