JPH034281U

JPH034281U -

Info

Publication number: JPH034281U
Application number: JP6304489U
Authority: JP
Priority date: 1989-05-31
Filing date: 1989-05-31
Publication date: 1991-01-17

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の縦断面図、第２図
は本考案の他の実施例の縦断面図、第３図は第１
図または第２図の電気的なブロツク構成図、第４
図は本考案の他の実施例の縦断面図、第５図は更
にほかの実施縦断面図、第６図は第５図の動作説
明を示す一部底面図、第７図は本考案の更に他の
実施例の縦断面図、第８図は本考案の更に他の実
施例の縦断面図、第９図は本考案の更に他の実施
例の縦断面図、第１０図は本考案の更に他の実施
例の縦断面図、第１１図は第１０図の動作説明を
示す一部の正面図、第１２図は従来装置の縦断面
図、第１３図は他の従来装置の縦断面図、第１４
図は１２図の検知エリアの説明図、第１５図は第
１３図の検知エリアの説明図である。１，５……ケース体、１ｂ……装置カバー（光
入射窓）、３……赤外線検出素子、５ｃ……フレ
ネルレンズ（光入射窓）、８……回転ボリウム（
検出感度自動補正手段）、９……スライドボリウ
ム（検出感度自動補正手段）、１４ｃ……伸縮ば
ね体（検出感度自動補正手段）、１５……レンズ
絞り板（検出感度自動補正手段）、１６ａ……凹
凸面（検出感度自動補正手段）、１７ａ……厚肉
部（検出感度自動補正手段）、１８……視野制限
板（検出感度自動補正手段）。 Fig. 1 is a longitudinal sectional view of one embodiment of the present invention, Fig. 2 is a longitudinal sectional view of another embodiment of the invention, and Fig. 3 is a longitudinal sectional view of one embodiment of the invention.
Electrical block diagram of Figure 2 or Figure 4
The figure is a longitudinal sectional view of another embodiment of the present invention, FIG. 5 is a longitudinal sectional view of still another implementation, FIG. 6 is a partial bottom view showing the operation explanation of FIG. FIG. 8 is a longitudinal sectional view of still another embodiment of the present invention, FIG. 9 is a longitudinal sectional view of still another embodiment of the present invention, and FIG. 10 is a longitudinal sectional view of still another embodiment of the present invention. FIG. 11 is a partial front view showing the operation explanation of FIG. 10, FIG. 12 is a longitudinal sectional view of a conventional device, and FIG. 13 is a longitudinal sectional view of another conventional device. Front view, No. 14
12 is an explanatory diagram of the detection area of FIG. 12, and FIG. 15 is an explanatory diagram of the detection area of FIG. 13. 1, 5...Case body, 1b...Device cover (light entrance window), 3...Infrared detection element, 5c...Fresnel lens (light entrance window), 8...Rotary volume (
9... Slide volume (detection sensitivity automatic correction means), 14c... Telescopic spring body (detection sensitivity automatic correction means), 15... Lens aperture plate (detection sensitivity automatic correction means), 16a... ... Uneven surface (detection sensitivity automatic correction means), 17a... Thick wall part (detection sensitivity automatic correction means), 18... Field of view limiting plate (detection sensitivity automatic correction means).

Claims

[Scope of utility model registration request]

An infrared detecting element is installed inside the case body fixed to the mounting point so as to be rotatable or reciprocating relative to the case body, facing the light incidence window of the case body, and this infrared detecting element detects the infrared rays. In an infrared human body detection device that converts an infrared light flux that enters through the light incidence window from a detection area set by a light receiving direction of a detection element into an electrical signal according to the amount of variation thereof, the infrared detection Detection sensitivity automatic correction means for varying the detection sensitivity so that it becomes lower as the detection distance becomes shorter, corresponding to the detection distance from the infrared detection element of the detection area set by the relative movement of the element with respect to the case body. An infrared human body detection device comprising: