Nohmi Bosai Ltd.

Akira Mizukami

Tsutomu Yamaura

A fire alarm system transmitter includes: a printed circuit board with a substantially rectangular shape, on which a terminal block including a plurality of terminals aligned along one side of the printed circuit board is disposed; a casing with a substantially rectangular parallelepiped shape, in which the printed circuit board is mounted; and an electric-wire insertion portion provided on a side wall of the casing facing the one side, and extended from the side wall by a predetermined distance toward an outside of the casing. The side wall allows a plurality of electric wires connected to the plurality of terminals to be inserted through the side wall.

Fire alarm system transmitter

Display for a fire alarm

A fire receiver for use in a building is divided into sections for each of which window indication is made by using a corresponding window. The fire receiver includes: a base having a frame for window indication; a rectangular window sheet to which the names of the sections are written and which is fitted into the frame of the base; and a substantially transparent protective sheet which is substantially of the same configuration as the window sheet and arranged in front thereof. The window sheet has at its longitudinal ends rectangular engagement members to be engaged with engagement grooves of the frame and at its center a central rectangular engagement member to be engaged with a central engagement groove of the frame.

Fire receiver

In a fire control and indicating equipment, a printed circuit board is so formed as to be larger in plane than an operation panel, engagement holes are defined in the printed circuit board, and engagement portions corresponding to the engagement holes are disposed on the back surface side of the operation panel. The engagement of the engagement holes with the engagement portion allows the printed circuit board and the operation panel to be integrated together in a state where the operation panel is mounted on the printed circuit board to form a unit body. The printed circuit board of the unit body is fixed onto a printed-board fixing section.

Growing community of inventors

Tokyo, Japan

Akira Mizukami