JPH0327323U

JPH0327323U -

Info

Publication number: JPH0327323U
Application number: JP8830789U
Authority: JP
Priority date: 1989-07-27
Filing date: 1989-07-27
Publication date: 1991-03-19

Description

[Brief explanation of drawings]

第１図は本考案の一実施例による赤外線検出装
置を示す断面図、第２図は従来の赤外線検出装置
を示す断面図、第３図は第２図の断面ＡＡを示す
図である。１……レンズユニツト、２……ホルダー、３…
…デユワ、４……コールドフインガー、５……コ
ンプレツサー、６……コネクテイングパイプ、９
……回路基板、１０……ケース、１１……赤外線
検出素子、１７……第１のＯリング、１８……第
２のＯリング、１９……水密コネクタ、２０……
絶縁油、２１……ベローズ、２２……電子冷却素
子、２３……フイン、２４……電子冷却素子の吸
熱部、２５……放熱部である。なお、図中、同一
符号は同一、又は相当部分を示す。 FIG. 1 is a sectional view showing an infrared detecting device according to an embodiment of the present invention, FIG. 2 is a sectional view showing a conventional infrared detecting device, and FIG. 3 is a cross-sectional view taken along section AA of FIG. 2. 1...Lens unit, 2...Holder, 3...
...Duwa, 4...Cold finger, 5...Compressor, 6...Connecting pipe, 9
... Circuit board, 10 ... Case, 11 ... Infrared detection element, 17 ... First O ring, 18 ... Second O ring, 19 ... Watertight connector, 20 ...
Insulating oil, 21...bellows, 22...electronic cooling element, 23...fin, 24...heat absorption part of the electronic cooling element, 25...heat radiation part. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a lens unit, a holder with which the lens unit is engaged, a cylindrical dewar that engages with the holder and is disposed on the same axis as the lens unit, and has an infrared detection element built therein;
A first O that seals the holder and the dewar
a ring, a cylindrical cold finger that engages with the dewar and has one end in contact with the infrared detection element, a connecting pipe that is internally connected to the cold finger, and a compressor that is internally connected to the connecting pipe. , a circuit board placed parallel to the dewar, a watertight case housing the parts, a bellows connected to the inside of the case and provided on the upper side of the case, and an insulating oil sealed inside the case. and a second O-ring that seals the holder and the case, and an electronic cooling element whose heat absorption part is in contact with the upper surface of the case and whose fins are engaged with the heat radiation part. Infrared detection device.