Disaster prevention apparatus

Patent metadata

Field	Value
Publication number	US-12430997-B2
Application number	US-202318118811-A
Country	US
Kind code	B2
Filing date	Mar 8, 2023
Priority date	Oct 30, 2020
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A detector 100 includes: an outer cover 11 ; and an indicator that outputs at least information about a test of a disaster prevention apparatus by emitting light, and that is provided in the outer cover 11 , wherein when at least a part of the outer cover 11 is covered with a test apparatus in order to perform the test of the detector 100 , at least a part of an indication surface of the indicator is exposed to an outside of the test apparatus and the indicator is formed in a side portion of the outer cover 11 , the indicator is formed in an edge portion of a front portion of the outer cover 11 , and the indicator is a part of a light guide portion 111 that is formed in the outer cover 11 , and that guides light from a light emitter.

First claim

The invention claimed is:

1. A disaster prevention apparatus installed on an attachment object of a monitoring region comprising:
an outer cover;
an indicator that outputs at least information about a test of the disaster prevention apparatus by emitting light, and that is provided in the outer cover; and
a detection element protector that accommodates a detection element to detect a fire outbreak or a gas leakage in the monitoring region, and that protrudes from the outer cover,
wherein the indicator is formed as a thin portion that is a portion thinner than other portions of the outer cover,
wherein the detection element protector has a spectroscopic portion that allows light from a light emitter to enter the detection element protector and the thin portion,
wherein the light from the light emitter is viewed from outside of the outer cover through the detection element protector and the thin portion,
wherein the outer cover comprises a front portion which is located on a side opposite the attachment object with respect to the disaster prevention apparatus, a back portion which is located on a side facing the attachment object, and a side portion which is a peripheral surface connected to the front portion and to the back portion,
wherein the thin portion is formed in at least the side portion of the outer cover, and
wherein when at least a part of the front portion of the outer cover is covered with a test apparatus in order to perform the test of the disaster prevention apparatus, at least a part of an indication surface of the thin portion which is a part formed at the side portion of the outer cover is exposed to an outside of the test apparatus.

2. The disaster prevention apparatus according to claim 1 , wherein the thin portion protrudes from a side portion of the outer cover.

3. The disaster prevention apparatus according to claim 1 , wherein the disaster prevention apparatus is at least a heat detector.

Assignees

• Hochiki Co

Inventors

• Washizu Keisuke
• Dohi Manabu

Classifications

• G08B17/103 Primary

  using a light emitting and receiving device · CPC title

• G08B17/113

  Constructional details · CPC title

• G08B29/145

  of fire detection circuits · CPC title

• G08B5/36

  using visible light sources · CPC title

• G08B17/10

  Actuation by presence of smoke or gases {, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means} · CPC title