Hochiki Corporation

Isao Saeki

Yasuharu Fujiwara

Hideki Takano

A fire detection apparatusA includes a heat detection unitA provided such that a part of the heat detection unitA is accommodated in an outer coverA and another part of the heat detection unitA is exposed to an outside of the fire detection apparatusA through an insertion holeA formed in a top surface portionA, and a guard portionA which is provided to cover a periphery of the insertion holeA and another part of the heat detection unitA in the top surface portionA and has a plurality of ribs, in which a material of a rib corresponding to a first guard side ribA among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side ribA among the plurality of ribs is made different from a shape of some other ribs.

Fire detection apparatus

Smoke detector

A fire detection apparatusF for detecting a fire in a monitored area, the fire detection apparatusF being attached to an installation surface of an installation object, the fire detection apparatusF comprises a detection spaceF in which detection of a detection target is performed; an incidence suppressing unit that inhibits ambient light from entering the detection spaceF, the incidence suppressing unit being able to allow a gas containing the detection target to flow into and out of the incidence suppressing unit; an accommodating unit that accommodates the incidence suppressing unit, the accommodating unit being able to allow the gas to flow into and out of the accommodating unit; and a light shielding wallF provided to surround the incidence suppressing unit on an inside of the accommodating unit, wherein the incidence suppressing unit includes a first incidence suppressing unit that covers a part of the detection spaceF, and a second incidence suppressing unit provided on an installation surface side of the first incidence suppressing unit, the second incidence suppressing unit covering another part of the detection spaceF, and the light shielding wallF is configured such that the light shielding wall overlaps a boundary between the first incidence suppressing unit and the second incidence suppressing unit when viewed in a direction orthogonal to the installation surface.

A fire detection apparatusA includes a detector coverA for inhibiting ambient light from entering a detection spaceA, an inner coverA that accommodates the detection spaceA and the detector coverA, an outer coverA that accommodates the inner coverA, a first openingA provided in a side portion on an opposite side from a side portion on an installation surface side among side portions of the inner coverA, a second opening provided in a side portion on an opposite side from a side portion on an installation surface among side portions of the detector coverA, and a flat plate-shaped insect screenA provided on the detector coverA and configured to substantially cover the entire second opening.

Growing community of inventors

Tokyo, Japan

Isao Saeki