JPH08220252A - Dew condensation preventing device - Google Patents

Dew condensation preventing device

Info

Publication number
JPH08220252A
JPH08220252A JP7053592A JP5359295A JPH08220252A JP H08220252 A JPH08220252 A JP H08220252A JP 7053592 A JP7053592 A JP 7053592A JP 5359295 A JP5359295 A JP 5359295A JP H08220252 A JPH08220252 A JP H08220252A
Authority
JP
Japan
Prior art keywords
dew condensation
outside air
sensor
heating element
temperature sensor
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
Application number
JP7053592A
Other languages
Japanese (ja)
Inventor
Kentaro Nakajima
建太郎 中島
Yuji Hara
裕二 原
Yoshihiko Kumakawa
良彦 熊川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SYST DESIGN K KK
Original Assignee
SYST DESIGN K KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SYST DESIGN K KK filed Critical SYST DESIGN K KK
Priority to JP7053592A priority Critical patent/JPH08220252A/en
Publication of JPH08220252A publication Critical patent/JPH08220252A/en
Pending legal-status Critical Current

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Landscapes

  • Closed-Circuit Television Systems (AREA)
  • Road Signs Or Road Markings (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

PURPOSE: To provide a dew condensation preventing device capable of accurately predicting or detecting the time of generating dew condensation, and consequently actuating a heating body whenever required for heating an object such as an outdoor installation. CONSTITUTION: A power supply section 5 having a solar battery 3 is mounted on the upper surface of the case C of an outdoor monitor camera B. Also, the side of the case C is fitted with a heating body control section 7, an outside air temperature sensor 9 and an outside air humidity sensor 11. Furthermore, lens cover glass F is fitted with a glass temperature sensor 13 and a flat heating body 17. In this case, the control section 7 makes judgement about the establishment of a dew condensation condition, on the basis of information from the sensors 9, 11 and 13, and the power supply section 5 supplies power to the heating body 17.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は結露を防止する装置に関
し、特に道路ミラーや監視用カメラなどの屋外設置物の
ガラス面等に外気温度との温度差により結露が生じるの
を防止するのに適した結露防止装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing dew condensation, and particularly for preventing dew condensation on a glass surface of an outdoor installation such as a road mirror or a surveillance camera due to a temperature difference from the outside air temperature. The present invention relates to a suitable condensation prevention device.

【0002】[0002]

【従来の技術】道路ミラーの鏡面や屋外に設置された監
視用カメラのレンズカバーガラスに外気温度との温度差
によって結露が生じれば、交通の安全を確保できず、ま
た十分な監視効果を期待できない。そこで、このような
屋外設置物には結露が生じないようにする結露防止構造
を構成する必要があり、加熱体を組み込んで屋外設置物
を加熱し、外気温度との温度差を減少させて、又はなく
して結露の発生を防止するものが採用されている。窓な
どに対する結露防止構造では、結露の発生時期を正確に
認識することができず、また操作の煩わしさがある反
面、構成が簡単であることから、加熱体の作動制御を手
動によって行う場合も多く、すなわち手動スイッチをO
N・OFFすることにより加熱体を作動させているので
あるが、屋外設置物に対してこのような手動制御を採用
して効果的に結露を防止することは困難である。
2. Description of the Related Art If dew condensation occurs on the mirror surface of a road mirror or on the lens cover glass of a surveillance camera installed outdoors, the temperature difference between the temperature of the outside air and the air will prevent the safety of traffic, and will result in a sufficient surveillance effect. I can't expect. Therefore, it is necessary to configure a condensation prevention structure that prevents dew condensation on such outdoor installations, by incorporating a heating element to heat the outdoor installations and reduce the temperature difference from the outside air temperature. Or, it is adopted to prevent the occurrence of dew condensation. With a structure that prevents condensation on windows, etc., it is not possible to accurately recognize the time of occurrence of condensation, and the operation is cumbersome, but since the configuration is simple, it is possible to control the operation of the heating element manually. Many, i.e. turn on the manual switch
Although the heating element is operated by turning it N / OFF, it is difficult to effectively prevent dew condensation by adopting such a manual control for an outdoor installation.

【0003】[0003]

【発明が解決しようとする課題】そこで、外気の湿度を
検知する外気湿度センサを用い、この外気湿度センサか
らの情報に基づいて結露条件の成否を判断し、この判断
に従って加熱体の作動を制御することが行われている
が、結露の発生は外気温度及び屋外設置物の温度が関係
しているので十分な効果を達成してはいない。
Therefore, an outside air humidity sensor for detecting the humidity of the outside air is used, and whether or not the dew condensation condition is satisfied is determined based on the information from the outside air humidity sensor, and the operation of the heating element is controlled according to this determination. However, since the occurrence of dew condensation is related to the outside air temperature and the temperature of the outdoor installation, it has not achieved a sufficient effect.

【0004】本発明はこのような従来の結露防止装置が
有する問題点を解消することを目的とし、結露発生時期
を正確に予知又は検出でき、その結果、適時に加熱体を
作動させて屋外設置物などの被加熱体を加熱することの
できる結露防止装置を提供しようとするものである。
SUMMARY OF THE INVENTION The present invention is intended to solve the problems of the conventional dew condensation prevention apparatus, and can accurately predict or detect the time of dew condensation occurrence, and as a result, activate the heating element in a timely manner for outdoor installation. An object of the present invention is to provide a dew condensation preventing device that can heat a heated object such as an object.

【0005】[0005]

【課題を解決するための手段】この目的を達成するた
め、本発明の結露防止装置は、被加熱体を加熱して結露
を防止する加熱体と、結露条件の成否を判断してこの加
熱体の作動を制御する加熱体制御部と、を有する結露防
止装置であって、前記被加熱体の外側の温度を検知する
外気温度センサ及び外側の湿度を検知する外気湿度セン
サと、前記被加熱体の温度を検知する被加熱体温度セン
サと、を備え、前記加熱体制御部は、この被加熱体温度
センサ、外気温度センサ及び外気湿度センサからの情報
に基づいて結露条件の成否を判断するものである。そし
て、結露防止装置が被加熱体に生じた結露を検出する結
露センサを備え、加熱体制御部がこの結露センサからの
情報にも基づいて加熱体の作動を制御するように構成す
ることが好ましい。結露センサとしては、発光部及び受
光部と、この発光部からの光線を受光部へ反射させる反
射部と、を備え、反射部に生じた結露による受光部への
光線伝送量の変化に基づいて被加熱体に生じた結露を検
出するものを用いることができる。反射部としては、特
別の反射板などを用いる場合もあるが、被加熱体のミラ
ーなどを利用する場合もある。
In order to achieve this object, a dew condensation preventing apparatus of the present invention comprises a heating element for heating a heated object to prevent dew condensation and a heating element for judging whether or not dew conditions are satisfied. A heating element control unit for controlling the operation of the heating element control unit, and an outside air temperature sensor for detecting a temperature outside the heated object, an outside air humidity sensor for detecting an outside humidity, and the heated object. And a heating target temperature sensor for detecting the temperature of the heating target control unit, wherein the heating target control unit determines whether or not the dew condensation condition is satisfied based on information from the heating target temperature sensor, the outside air temperature sensor, and the outside air humidity sensor. Is. Then, it is preferable that the dew condensation prevention device includes a dew condensation sensor that detects dew condensation that has occurred on the heated body, and the heating body control unit controls the operation of the heating body also based on the information from the dew condensation sensor. . As the dew condensation sensor, a light emitting unit and a light receiving unit, and a reflecting unit for reflecting light rays from the light emitting unit to the light receiving unit, based on a change in the amount of light transmitted to the light receiving unit due to dew condensation on the reflecting unit. It is possible to use a device that detects dew condensation on the object to be heated. A special reflector or the like may be used as the reflector, but a mirror or the like to be heated may be used in some cases.

【0006】本発明の結露防止装置の電源としては太陽
電池を用いることが効果的である。
It is effective to use a solar cell as a power source of the dew condensation preventing apparatus of the present invention.

【0007】[0007]

【作用】外気湿度センサにより検知される外気湿度と、
外気温度センサ及び被加熱体温度センサの検知結果から
算出される外気と被加熱体の温度差とから結露条件が成
立したこと、又は結露条件の成立が近いことを加熱体制
御部が判断し、その結果、加熱体を作動させる。被加熱
体温度センサによって直接に被加熱体の温度を検知して
いるので、結露条件の成否をより正確に判断することが
できる。被加熱体温度センサは被加熱体の外気と接して
いる表面の温度を検知することが好ましく、ガラスなど
の結露防止箇所の温度を直接、又は結露防止箇所の隣接
部分の温度を検知するのが効果的である。
[Function] The outside air humidity detected by the outside air humidity sensor,
The heating body control unit determines that the dew condensation condition is satisfied from the temperature difference between the outside air and the heated object calculated from the detection results of the outside air temperature sensor and the heated object temperature sensor, or that the dew condensation condition is close to being satisfied, As a result, the heating element is activated. Since the temperature of the heated body is directly detected by the heated body temperature sensor, the success or failure of the dew condensation condition can be determined more accurately. The heated object temperature sensor preferably detects the temperature of the surface of the heated object that is in contact with the outside air, and it is preferable to detect the temperature of the dew condensation prevention part such as glass directly or the temperature of the adjacent part of the dew condensation prevention part. It is effective.

【0008】被加熱体温度センサ、外気温度センサ及び
外気湿度センサからの情報では結露条件が成立していな
いと判断される場合でも、実際に結露が生じてしまう可
能性はある。そこで、結露センサを設けて実際の結露の
発生を検出して加熱体の作動を制御するように構成すれ
ば、より優れた結露防止効果を期待できる。結露センサ
が実際の結露の発生を検出した場合には、この結露セン
サによって結露の消滅が確認されるまで加熱体制御部が
加熱体を作動させるように構成するのが普通である。ま
た、この結露センサを設けることにより、被加熱体温度
センサ、外気温度センサ又は外気湿度センサのいずれか
に故障が発生した場合にも結露防止機能を維持すること
ができる。
Condensation may actually occur even if it is judged from the information from the heated object temperature sensor, the outside air temperature sensor and the outside air humidity sensor that the dew condensation condition is not satisfied. Therefore, if a dew condensation sensor is provided to detect the actual occurrence of dew condensation and control the operation of the heating element, a more excellent dew condensation prevention effect can be expected. When the dew condensation sensor detects the actual occurrence of dew condensation, the heating body control unit normally operates the heating body until the dew condensation sensor confirms that the dew condensation has disappeared. Further, by providing this dew condensation sensor, the dew condensation prevention function can be maintained even if any of the heated object temperature sensor, the outside air temperature sensor, or the outside air humidity sensor fails.

【0009】電源として太陽電池を用いることにより、
外部から電力を提供することなく永続的に装置を稼動さ
せることができるので、特に屋外設置物に対して適した
結露防止装置を提供できる。
By using a solar cell as a power source,
Since the device can be operated permanently without supplying electric power from the outside, it is possible to provide a dew condensation preventing device particularly suitable for outdoor installations.

【0010】[0010]

【実施例】以下、本発明の実施例を図面を参照して説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0011】図1は屋外監視用カメラに本発明に係る結
露防止装置を取り付けた場合を示す斜視図である。
FIG. 1 is a perspective view showing a case where the dew condensation preventing apparatus according to the present invention is attached to an outdoor monitoring camera.

【0012】支持体Aに回転可能に支えられた屋外監視
用カメラB(被加熱体)は、ケースC内に開口Dへ向け
てカメラレンズEが収容されていて、開口Dにはレンズ
カバーガラスFが取り付けられている。結露防止装置1
はこのレンズカバーガラスF表面に結露が生じるのを防
止するものである。
An outdoor monitoring camera B (heated body) rotatably supported by a support A has a camera lens E housed in a case C toward an opening D, and the opening D has a lens cover glass. F is attached. Condensation prevention device 1
Is to prevent dew condensation on the surface of the lens cover glass F.

【0013】結露防止装置1は、太陽電池3(電源)が
組み込まれ、ケースCの上面に取り付けられた電源部5
と、ケースCの側面に取り付けられた加熱体制御部7
と、同じくケースCの側面に取り付けられた外気温度セ
ンサ9及び外気湿度センサ11とを有し、レンズカバー
ガラスF下側に取り付けられたガラス温度センサ13
(被加熱体温度センサ)及び結露センサ15と、同じく
レンズカバーガラスF下側に取り付けられた面状発熱体
17(加熱体)とを備えている。面状発熱体17は太陽
電池3から電力を供給されて作動し、発熱して結露が生
じないようにレンズカバーガラスFを加熱する。なお、
レンズカバーガラスFに直接に面状発熱体17やガラス
温度センサ13・結露センサ15を取り付けることがで
きないか、あるいは取り付けることが妥当でない場合に
は、ケースCの前端部に取り付けることとなる。また、
面状発熱体17はレンズカバーガラスFの裏面に取り付
けられる場合もある。
The dew condensation preventing device 1 incorporates a solar cell 3 (power source) and is mounted on the upper surface of a case C to provide a power source section 5.
And the heating element control unit 7 attached to the side surface of the case C
And an outside air temperature sensor 9 and an outside air humidity sensor 11 also attached to the side surface of the case C, and a glass temperature sensor 13 attached to the lower side of the lens cover glass F.
A (heated body temperature sensor) and a dew condensation sensor 15 are provided, and a planar heating element 17 (heating element) also attached to the lower side of the lens cover glass F. The planar heating element 17 is operated by being supplied with electric power from the solar cell 3 and heats the lens cover glass F so as not to generate heat and cause dew condensation. In addition,
If the surface heating element 17 and the glass temperature sensor 13 / condensation sensor 15 cannot be directly attached to the lens cover glass F, or if the attachment is not appropriate, it will be attached to the front end of the case C. Also,
The sheet heating element 17 may be attached to the back surface of the lens cover glass F in some cases.

【0014】図2は結露防止装置1の構成を示すブロッ
ク図である。
FIG. 2 is a block diagram showing the structure of the dew condensation preventing apparatus 1.

【0015】結露防止装置1の加熱体制御部7は結露条
件判断部19と、この結露条件判断部19からの信号に
基づいて電源部5から面状発熱体17に通電させる電流
制御部21とから構成されている。
The heating element control section 7 of the dew condensation prevention device 1 includes a dew condensation condition determination section 19 and a current control section 21 for energizing the planar heating element 17 from the power source section 5 based on a signal from the dew condensation condition determination section 19. It consists of

【0016】結露条件判断部19には外気温度センサ9
によって検知された外気温度(T1)を示す信号と、ガ
ラス温度センサ13によって検知されたレンズカバーガ
ラスFの外気側表面温度(T2)を示す信号とが入力さ
れ、結露条件判断部19は外気温度(T1)とレンズカ
バーガラスFの外気側表面温度(T2)との温度差(T
3=T1−T2)を算出する。結露条件判断部19には
また、外気湿度センサ11によって検知された外気湿度
(H)を示す信号が入力されていて、結露条件判断部1
9はこの外気湿度(H)と温度差(T3)とに基づき、
組み込まれている結露条件データを用いてレンズカバー
ガラスFが結露環境にあるか否か、すなわち結露条件が
成立しているか否かを判断する。結露条件判断部19は
結露条件の成立を認識すると電流制御部21に面状発熱
体17への通電を命令し、その結果、面状発熱体17が
作動してレンズカバーガラスFを加熱する。レンズカバ
ーガラスFが加熱されて結露条件判断部19により算出
される温度差(T3)が零になると、結露条件判断部1
9は電流制御部21に面状発熱体17への通電停止を命
令する。なお、電流制御部21への通電停止命令は、結
露条件判断部19が外気湿度(H)と温度差(T3)と
に基づいてレンズカバーガラスFが結露環境を十分逸脱
していると判断したときに行われるように構成してもよ
い。すなわち、温度差(T3)が零にならなくても通電
停止命令が行われるように構成する場合もある。さら
に、温度差(T3)が一定値に達した後に直ちに面状発
熱体17への通電を停止させないで、電流制御部21に
よる電流調節によって面状発熱体17の温度を適当にコ
ントロールし、レンズカバーガラスFの温度が結露条件
を逸脱するような一定値に一定時間維持されるように構
成してもよい。
The dew condensation condition determination unit 19 includes an outside air temperature sensor 9
The signal indicating the outside air temperature (T1) detected by and the signal indicating the outside air side surface temperature (T2) of the lens cover glass F detected by the glass temperature sensor 13 are input, and the dew condensation condition determination unit 19 determines the outside air temperature. (T1) and the temperature difference (T2) between the outside surface temperature of the lens cover glass F (T2).
3 = T1-T2) is calculated. A signal indicating the outside air humidity (H) detected by the outside air humidity sensor 11 is also input to the dew condensation condition judgment unit 19, and the dew condensation condition judgment unit 1
9 is based on this outside air humidity (H) and temperature difference (T3),
Using the built-in dew condensation condition data, it is determined whether the lens cover glass F is in a dew condensation environment, that is, whether the dew condensation condition is satisfied. When the dew condensation condition determination unit 19 recognizes that the dew condensation condition is satisfied, the current control unit 21 is instructed to energize the sheet heating element 17, and as a result, the sheet heating element 17 operates to heat the lens cover glass F. When the lens cover glass F is heated and the temperature difference (T3) calculated by the dew condensation condition determination unit 19 becomes zero, the dew condensation condition determination unit 1
Reference numeral 9 instructs the current control unit 21 to stop energization of the sheet heating element 17. In addition, the dew condensation condition determination unit 19 determines that the lens cover glass F has sufficiently deviated from the dew condensation environment based on the outside air humidity (H) and the temperature difference (T3) in the power supply stop command to the current control unit 21. It may be configured to be performed from time to time. That is, in some cases, the energization stop command is issued even if the temperature difference (T3) does not become zero. Further, the temperature of the sheet heating element 17 is appropriately controlled by adjusting the current by the current control unit 21 without stopping the power supply to the sheet heating element 17 immediately after the temperature difference (T3) reaches a certain value. You may comprise so that the temperature of the cover glass F may be maintained at a fixed value which deviates from a dew condensation condition for a fixed time.

【0017】レンズカバーガラスFに実際に結露が生じ
ているか否かは結露センサ15によって監視される。外
気湿度センサ11によって検知されている外気湿度
(H)と、外気温度センサ9及びガラス温度センサ13
の検知結果から算出された温度差(T3)とからは結露
条件が成立していないと判断されるのに、実際には結露
が生じている場合には、結露センサ15からの結露を示
す信号が結露条件判断部19に入力され、結露条件判断
部19は電流制御部21に面状発熱体17への通電を命
令する。そして、生じた結露がレンズカバーガラスFの
加熱により消滅したことを結露センサ15が検出し、結
露条件判断部19にその旨の信号が入力されると、結露
条件判断部19は電流制御部21に面状発熱体17への
通電停止を命令する。外気温度センサ9、ガラス温度セ
ンサ13又は外気湿度センサ11のいずれかが故障して
結露条件の成立を判断することができない場合にも、同
様にして結露センサ15からの情報に基づいて面状発熱
体17への通電が行われる。この場合にも結露が消滅し
た後に直ちに面状発熱体17への通電を停止させない
で、一定時間レンズカバーガラスFが加熱されるように
構成してもよい。
Whether or not dew condensation actually occurs on the lens cover glass F is monitored by the dew condensation sensor 15. The outside air humidity (H) detected by the outside air humidity sensor 11, the outside air temperature sensor 9, and the glass temperature sensor 13
Although it is determined from the temperature difference (T3) calculated from the detection result of No. 3 that the dew condensation condition is not satisfied, when dew condensation actually occurs, a signal indicating dew condensation from the dew condensation sensor 15 Is input to the dew condensation condition determination unit 19, and the dew condensation condition determination unit 19 commands the current control unit 21 to energize the planar heating element 17. Then, when the condensation sensor 15 detects that the generated condensation has disappeared due to the heating of the lens cover glass F, and a signal to that effect is input to the condensation condition determination unit 19, the condensation condition determination unit 19 causes the current control unit 21. Is instructed to stop energizing the sheet heating element 17. Even when one of the outside air temperature sensor 9, the glass temperature sensor 13, or the outside air humidity sensor 11 fails and it is not possible to determine whether the dew condensation condition is satisfied, the sheet-like heat generation is similarly performed based on the information from the dew condensation sensor 15. The body 17 is energized. Also in this case, the lens cover glass F may be heated for a certain period of time without stopping the power supply to the sheet heating element 17 immediately after the dew condensation disappears.

【0018】図3は電源部5の構成を示す図である。FIG. 3 is a diagram showing the structure of the power supply unit 5.

【0019】電源部5は電源として太陽電池3を有し、
過充電防止回路を含んだ電圧レギュレータ23と、蓄電
池25とを備えて構成されている。結露条件は夜間又は
早朝に成立することが多いため、面状発熱体17への電
力の供給は直接的には蓄電池25から行われるのが普通
である。なお、図中27は逆流防止用ダイオードであ
る。
The power source section 5 has a solar cell 3 as a power source,
A voltage regulator 23 including an overcharge prevention circuit and a storage battery 25 are provided. Since the dew condensation condition is often established at night or in the early morning, power is normally supplied directly from the storage battery 25 to the sheet heating element 17. Reference numeral 27 in the figure is a backflow prevention diode.

【0020】図4は結露センサ15の構成を概略的に示
す図である。
FIG. 4 is a diagram schematically showing the structure of the dew condensation sensor 15.

【0021】結露センサ15は、電源回路29に接続さ
れた赤外LED31(発光部)とフォトトランジスタ3
3(受光部)とを有し、赤外LED31からの赤外線
(光線)をフォトトランジスタ33へ向けて反射させる
反射板35(反射部)を備えている(矢印参照)。そし
て、反射板35は、レンズカバーガラスFに接するか、
または僅かな隙間を有してこのレンズカバーガラスFと
平行になるように結露センサ15に組み込まれている。
したがって、レンズカバーガラスFに結露が生じた場合
には結露センサ15の反射板35にも結露が生じ、その
結果、赤外LED31から集光レンズF1を通過して反
射板35に到達した赤外線の反射角度が変化して集光レ
ンズF2を通過してフォトトランジスタ33に到達する
赤外線伝送量も変化する。そして、フォトトランジスタ
33に到達する赤外線伝送量に基づいて信号出力回路3
7が結露条件判断部19に結露が生じているか否かを示
す信号を出力する。
The dew condensation sensor 15 includes an infrared LED 31 (light emitting section) connected to a power supply circuit 29 and a phototransistor 3.
3 (light receiving portion), and a reflection plate 35 (reflection portion) that reflects infrared rays (light rays) from the infrared LED 31 toward the phototransistor 33 (see arrow). Then, the reflection plate 35 contacts the lens cover glass F,
Alternatively, it is incorporated in the dew condensation sensor 15 so as to be parallel to the lens cover glass F with a slight gap.
Therefore, when dew condensation occurs on the lens cover glass F, dew condensation also occurs on the reflection plate 35 of the dew condensation sensor 15, and as a result, the infrared rays passing through the infrared LED 31 through the condenser lens F1 to reach the reflection plate 35. The amount of infrared transmission that changes the reflection angle and passes through the condenser lens F2 to reach the phototransistor 33 also changes. Then, based on the amount of infrared transmission reaching the phototransistor 33, the signal output circuit 3
7 outputs a signal indicating whether or not dew condensation occurs to the dew condensation condition determination unit 19.

【0022】図5は面状発熱体17の構成を示す断面図
である。
FIG. 5 is a sectional view showing the structure of the sheet heating element 17.

【0023】面状発熱体17は全体として柔軟性を有
し、裏面に接着層39を備えた発熱部41と、表面側を
覆うように設けられた断熱部43と、この断熱部43及
び発熱部41の間に配置された可逆性ゲル状蓄熱材45
とから構成され、接着層39をレンズカバーガラスF表
面に接着することにより取り付けられている。面状発熱
体17への電流調節によりレンズカバーガラスFの温度
を結露が生じない一定温度に一定時間維持しようとする
場合には、可逆性ゲル状蓄熱材45による加熱効果をも
考慮した電流調節が行われるように構成すべきである。
The sheet heating element 17 has flexibility as a whole, and has a heat generating portion 41 having an adhesive layer 39 on the back surface, a heat insulating portion 43 provided so as to cover the front surface side, the heat insulating portion 43 and heat generation. Reversible gel heat storage material 45 arranged between the parts 41
It is attached by adhering the adhesive layer 39 to the surface of the lens cover glass F. When the temperature of the lens cover glass F is to be maintained at a constant temperature without dew condensation for a certain period of time by adjusting the current to the sheet heating element 17, the current adjustment that also considers the heating effect of the reversible gel heat storage material 45. Should be configured to take place.

【0024】図6は道路ミラーに本発明に係る結露防止
装置を取り付けた場合を示す図である。
FIG. 6 is a view showing a case where the dew condensation preventing device according to the present invention is attached to a road mirror.

【0025】支持体Gに支えられた道路ミラーI(被加
熱体)は裏面カバーJに金属製の凸状ミラーKが取り付
けられていて、裏面カバーJと凸状ミラーKとの間には
スペースが形成されている。結露防止装置1´はこの凸
状ミラーKのミラー面Lに結露が生じるのを防止するも
のである。
The road mirror I (the object to be heated) supported by the support G has a rear cover J and a metallic convex mirror K attached thereto, and a space is provided between the rear cover J and the convex mirror K. Are formed. The dew condensation prevention device 1 ′ prevents dew condensation from occurring on the mirror surface L of the convex mirror K.

【0026】結露防止装置1´は、太陽電池3´(電
源)が組み込まれ、裏面カバーJに取り付けられた電源
部5´と、同じく裏面カバーJに取り付けられ、防水処
理が施された加熱体制御部7´と、凸状ミラーKの開口
外周部に取り付けられた外気温度センサ9´及び外気湿
度センサ11´とを有し、凸状ミラーKのミラー面L外
周に取り付けられたミラー温度センサ13´(被加熱体
温度センサ)及び結露センサ15´と、凸状ミラーKの
裏面に取り付けられた面状発熱体17´(加熱体)とを
備えている。面状発熱体17´は、裏面に接着層39´
を備えた発熱部41´をミラー面Lの裏面のほぼ全部を
覆うように凸状ミラーKに接着し、可逆性ゲル状蓄熱材
45´を挟んでこの発熱部41´全体を断熱部43´で
カバーすることにより取り付けられている。面状発熱体
17´の作動制御は屋外監視用カメラBの結露防止装置
1における面状発熱体17の作動制御と同様に行われ
る。なお、ミラー温度センサ13´と結露センサ15´
はミラー面L外周に取り付けられるのが好ましいが、凸
状ミラーKの開口外周部、すなわちミラー面Lの外側に
取り付けてもよい。
The dew condensation preventing apparatus 1'includes a solar cell 3 '(power source) and a power source section 5'attached to the back cover J, and a heating element attached to the back cover J and waterproofed. A mirror temperature sensor having a control unit 7 ′, an outside air temperature sensor 9 ′ and an outside air humidity sensor 11 ′ attached to the opening outer peripheral portion of the convex mirror K, and attached to the outer periphery of the mirror surface L of the convex mirror K. 13 '(heated body temperature sensor) and a dew condensation sensor 15', and a planar heating element 17 '(heating element) attached to the back surface of the convex mirror K. The sheet heating element 17 'has an adhesive layer 39' on the back surface.
The heat generating part 41 'provided with the above is adhered to the convex mirror K so as to cover almost the entire back surface of the mirror surface L, and the heat generating part 41' is entirely insulated with the reversible gel heat storage material 45 'sandwiched therebetween. It is attached by covering with. The operation control of the sheet heating element 17 'is performed in the same manner as the operation control of the sheet heating element 17 in the dew condensation prevention device 1 of the outdoor monitoring camera B. The mirror temperature sensor 13 'and the condensation sensor 15'
Is preferably attached to the outer periphery of the mirror surface L, but may be attached to the outer periphery of the opening of the convex mirror K, that is, outside the mirror surface L.

【0027】[0027]

【発明の効果】以上説明したように、本発明の結露防止
装置は外気温度センサ、外気湿度センサ及び被加熱体温
度センサを用い、これらのセンサからの情報に基づいて
加熱体の作動を制御するので、屋外設置物などに結露が
生じるのを効果的に防止することができる。
As described above, the dew condensation preventing apparatus of the present invention uses the outside air temperature sensor, the outside air humidity sensor and the heated object temperature sensor, and controls the operation of the heating element based on the information from these sensors. Therefore, it is possible to effectively prevent dew condensation on an outdoor installation or the like.

【図面の簡単な説明】[Brief description of drawings]

【図1】屋外監視用カメラに本発明に係る結露防止装置
を取り付けた場合を示す斜視図である。
FIG. 1 is a perspective view showing a case where a dew condensation preventing device according to the present invention is attached to an outdoor monitoring camera.

【図2】結露防止装置の構成を示すブロック図である。FIG. 2 is a block diagram showing a configuration of a dew condensation preventing device.

【図3】電源部の構成を示す図である。FIG. 3 is a diagram showing a configuration of a power supply unit.

【図4】結露センサの構成を概略的に示す図である。FIG. 4 is a diagram schematically showing a configuration of a dew condensation sensor.

【図5】面状発熱体の構成を示す断面図である。FIG. 5 is a cross-sectional view showing a configuration of a planar heating element.

【図6】道路ミラーに本発明に係る結露防止装置を取り
付けた場合を示す図である。
FIG. 6 is a view showing a case where a dew condensation preventing device according to the present invention is attached to a road mirror.

【符号の説明】[Explanation of symbols]

3,3´ 太陽電池 7,7´ 加熱体制御部 9,9´ 外気温度センサ 11,11´ 外気湿度センサ 13 ガラス温度センサ(被加熱体温度セン
サ) 13´ ミラー温度センサ(被加熱体温度セン
サ) 15,15´ 結露センサ 17,17´ 面状発熱体(加熱体) 31 赤外LED(発光部) 33 フォトトランジスタ(受光部) 35 反射板(反射部) A 屋外監視用カメラ(被加熱体) I 道路ミラー(被加熱体)
3,3 'Solar cell 7,7' Heated body control unit 9,9 'Outside air temperature sensor 11, 11' Outside air humidity sensor 13 Glass temperature sensor (heated body temperature sensor) 13 'Mirror temperature sensor (heated body temperature sensor) ) 15,15 'Condensation sensor 17,17' Planar heating element (heating element) 31 Infrared LED (light emitting part) 33 Phototransistor (light receiving part) 35 Reflector (reflecting part) A Outdoor monitoring camera (heated object) ) I Road mirror (body to be heated)

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 G03B 15/00 G03B 15/00 S H04N 5/225 H04N 5/225 C 7/18 7/18 H ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI Technical display location G03B 15/00 G03B 15/00 S H04N 5/225 H04N 5/225 C 7/18 7/18 H

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 被加熱体を加熱して結露を防止する加熱
体と、結露条件の成否を判断してこの加熱体の作動を制
御する加熱体制御部と、を有する結露防止装置であっ
て、 前記被加熱体の外側の温度を検知する外気温度センサ及
び外側の湿度を検知する外気湿度センサと、前記被加熱
体の温度を検知する被加熱体温度センサと、を備え、前
記加熱体制御部は、この被加熱体温度センサ、外気温度
センサ及び外気湿度センサからの情報に基づいて結露条
件の成否を判断することを特徴とする結露防止装置。
1. A dew condensation prevention apparatus comprising: a heating element that heats an object to be heated to prevent dew condensation; and a heating element control unit that determines whether a dew condensation condition is satisfied and controls the operation of the heating element. , An outside air temperature sensor for detecting an outside temperature of the heated body and an outside air humidity sensor for detecting an outside humidity, and a heated body temperature sensor for detecting a temperature of the heated body, the heating body control The dew condensation preventing apparatus is characterized in that the section determines whether or not a dew condensation condition is satisfied based on information from the heated object temperature sensor, the outside air temperature sensor, and the outside air humidity sensor.
【請求項2】 被加熱体に生じた結露を検出する結露セ
ンサを備え、前記加熱体制御部はこの結露センサからの
情報にも基づいて前記加熱体の作動を制御することを特
徴とする請求項1記載の結露防止装置。
2. A dew condensation sensor for detecting dew condensation on a heated body, wherein the heating body control section controls the operation of the heating body based on information from the dew condensation sensor. Item 1. A condensation prevention device according to item 1.
【請求項3】 前記結露センサは、発光部及び受光部
と、この発光部からの光線を受光部へ反射させる反射部
と、を備え、反射部に生じた結露による受光部への光線
伝送量の変化に基づいて被加熱体に生じた結露を検出す
ることを特徴とする請求項2記載の結露防止装置。
3. The dew condensation sensor includes a light emitting section, a light receiving section, and a reflecting section that reflects light rays from the light emitting section to the light receiving section, and the amount of light transmitted to the light receiving section due to dew condensation on the reflecting section. The dew condensation preventing apparatus according to claim 2, wherein the dew condensation generated on the object to be heated is detected based on the change of the above.
【請求項4】 電源として太陽電池を備えていることを
特徴とする請求項1,2又は3記載の結露防止装置。
4. The dew condensation preventing apparatus according to claim 1, further comprising a solar cell as a power source.
JP7053592A 1995-02-17 1995-02-17 Dew condensation preventing device Pending JPH08220252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7053592A JPH08220252A (en) 1995-02-17 1995-02-17 Dew condensation preventing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7053592A JPH08220252A (en) 1995-02-17 1995-02-17 Dew condensation preventing device

Publications (1)

Publication Number Publication Date
JPH08220252A true JPH08220252A (en) 1996-08-30

Family

ID=12947154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7053592A Pending JPH08220252A (en) 1995-02-17 1995-02-17 Dew condensation preventing device

Country Status (1)

Country Link
JP (1) JPH08220252A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004606A1 (en) * 1999-07-09 2001-01-18 Rms Research Management Systems Inc. Object imaging system
JP2009079912A (en) * 2007-09-25 2009-04-16 Niigata Denki Kk Snowfall intensity measuring method and snowfall intensity measuring device
US8079755B2 (en) * 2008-10-03 2011-12-20 Yi-Chia Liao Solar energy powered outdoor temperature and humidity detection device
EP2085520A3 (en) * 2008-02-04 2012-11-07 Dino Moschini Road mirror with heating and alarms
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WO2018164229A1 (en) * 2017-03-09 2018-09-13 日本電気株式会社 Gas detection system, gas detection method and program
JP2020019458A (en) * 2018-08-03 2020-02-06 東京コスモス電機株式会社 Fogging prevention device
KR20200089777A (en) * 2019-01-17 2020-07-28 현대자동차주식회사 Vehicle hvac system and method for monitoring cabin air filter status in vehicle hvac system
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6643455B1 (en) 1999-07-09 2003-11-04 Rms Research Management Systems, Inc. Object imaging system
WO2001004606A1 (en) * 1999-07-09 2001-01-18 Rms Research Management Systems Inc. Object imaging system
JP2009079912A (en) * 2007-09-25 2009-04-16 Niigata Denki Kk Snowfall intensity measuring method and snowfall intensity measuring device
EP2085520A3 (en) * 2008-02-04 2012-11-07 Dino Moschini Road mirror with heating and alarms
US8079755B2 (en) * 2008-10-03 2011-12-20 Yi-Chia Liao Solar energy powered outdoor temperature and humidity detection device
CN104243852B (en) * 2013-06-21 2019-02-22 北京通创华科技发展有限公司 Traffic monitoring and environment information acquisition system
CN104243852A (en) * 2013-06-21 2014-12-24 张振普 Traffic monitoring and environment information collecting system
WO2018164229A1 (en) * 2017-03-09 2018-09-13 日本電気株式会社 Gas detection system, gas detection method and program
JPWO2018164229A1 (en) * 2017-03-09 2020-01-09 日本電気株式会社 Gas detection system, gas detection method and program
US10761017B2 (en) 2017-03-09 2020-09-01 Nec Corporation Gas detection system, gas detection method and program
JP2020019458A (en) * 2018-08-03 2020-02-06 東京コスモス電機株式会社 Fogging prevention device
KR20200089777A (en) * 2019-01-17 2020-07-28 현대자동차주식회사 Vehicle hvac system and method for monitoring cabin air filter status in vehicle hvac system
CN113686921A (en) * 2021-08-19 2021-11-23 重庆欣万怡玻璃有限公司 Cavity glass dewfall intellectual detection system processing apparatus based on functional glass
CN113686921B (en) * 2021-08-19 2024-04-16 重庆欣万怡玻璃有限公司 Hollow glass dewing intelligent detection processing device based on functional glass

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