Title:
【発明の名称】光電式煙感知器及び検煙部アッセンブリィ
Document Type and Number:
Japanese Patent JP3370032
Kind Code:
B2
Abstract:
A photoelectric smoke detector includes a smoke detecting section defining a smoke detecting space, a light emission section holder having a light-emission element disposed in the smoke detecting section, and a light receiving section holder having a light-receiving element disposed in the smoke detecting section. The light-receiving element receives light which has been emitted from the light-emission element and is scattered by smoke flowing in the smoke detecting space. A hybrid circuit board has an integrated circuit mounted thereon and is housed in the light receiving section holder. The integrated circuit including the light-receiving element and at least a received-light signal amplifying circuit. The hybrid circuit board is arranged so that the light-receiving surface of the light-receiving element is directed toward the smoke detecting space.
Inventors:
Naoto Yamano
Application Number:
JP31058599A
Publication Date:
January 27, 2003
Filing Date:
November 01, 1999
Export Citation:
Assignee:
Hochiki Co., Ltd.
International Classes:
G01N21/53; G08B17/107; H05K1/02; H05K1/14; H05K1/18; (IPC1-7): G08B17/107; G01N21/53
Domestic Patent References:
| JP4117597A | ||||
| JP1153657A |
Attorney, Agent or Firm:
Susumu Takeuchi (1 person outside)