The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2001
Filed:
Feb. 25, 2000
Nittan Company Limited, Tokyo, JP;
Abstract
A fire detector which can be observed an operating state thereof from every direction and decrease a cost thereof as possible. The fire detector (,) comprises: the circuit board (,) in which the circuit for detecting a fire is formed; the LED (,) which is surface-mounted on the circuit board (,); and the indication lamp for indicating the fire detector being under detection by emitting the light emitted from the LED (,), wherein the indication lamp comprises the light guide member (,) for introducing the light emitted from the LED (,) to the indication lamp with a ring shape, the light guide member (,) comprises the light incident parts (,) and (,) and the ring member (,), notches (,) and (,) are formed in the vicinity of the light incident parts (,) and (,) of the ring member (,), and a plurality of small grooves (,), and (,) . . . are formed in the bottom surface (,) of the ring member (,).