JPS6360947U

JPS6360947U -

Info

Publication number: JPS6360947U
Application number: JP15533486U
Authority: JP
Priority date: 1986-10-09
Filing date: 1986-10-09
Publication date: 1988-04-22

Description

[Brief explanation of the drawing]

第１図は本考案による結露検出装置の概略断面
図である。１……結露検出装置、２……ケース、３……反
射板、４……ゴムシート、５……発光素子、５ａ
……変調回路、６……主受光素子、７ａ，７ｂ，
７ｃ，７ｄ……副受光素子、８……検波回路、９
……比較回路、１０……取付け部、１１……自動
車の車体、１２……ネジ、１３……取付けステー
、１４……弾性板材、１５……自動車の窓ガラス
。 FIG. 1 is a schematic sectional view of a dew condensation detection device according to the present invention. DESCRIPTION OF SYMBOLS 1... Condensation detection device, 2... Case, 3... Reflection plate, 4... Rubber sheet, 5... Light emitting element, 5a
... Modulation circuit, 6 ... Main light receiving element, 7a, 7b,
7c, 7d... Sub light receiving element, 8... Detection circuit, 9
... Comparison circuit, 10 ... Mounting part, 11 ... Car body, 12 ... Screw, 13 ... Mounting stay, 14 ... Elastic plate material, 15 ... Car window glass.

Claims

[Scope of Claim for Utility Model Registration] (1) A reflector that is brought into contact with the inner surface of the window glass of an automobile, etc., through which dew condensation is to be detected, via a highly thermally conductive rubber sheet, and A light emitting element that emits light having a central axis of incidence, a main light receiving element disposed on the central axis of the light from the light emitting element specularly reflected by the reflecting plate, and a center of the incident light from the light emitting element. at least one sub light receiving element disposed near the main light receiving element so as to form a reflection angle different from that of the main light receiving element within a plane perpendicular to the reflecting plate including the axis and the central axis of the reflected light; When dew condensation occurs on the inner surface of the window glass, the light from the light emitting element is diffusely reflected by the reflector and enters the sub light receiving element, thereby reducing light reception by the main light receiving element and the sub light receiving element. A dew condensation detection device characterized by detecting dew condensation based on a ratio of amounts. (2) The dew condensation detection device has a mounting portion consisting of a mounting stay that is fixed to the inner surface of a vehicle body, such as an automobile, by a mounting means such as a screw, and an elastic plate material such as a leaf spring that has one end fixed to the mounting stay. By bringing the reflective plate into contact with an appropriate position on the inner surface of the window glass via a rubber sheet and fixing the mounting stay at a predetermined position on the inner surface of the vehicle body, the tip of the elastic plate material is elastically deformed. In this state, the condensation sensor comes into contact with the top surface of the case of the condensation sensor that is in contact with the inner surface of the window glass, and the tip of the elastic plate moves the reflector onto the window glass due to the stress generated by the elastic deformation of the elastic plate. The dew condensation detection device according to claim 1, characterized in that it is attached in pressure contact with an inner surface.