公开(公告)号：EP3813033A1

公开(公告)日：2021-04-28

申请号：EP19825259.5

申请日：2019-04-22

申请人： Hochiki Corporation

发明人： TAKANO, Hideki ,  FUJIWARA, Yasuharu ,  SAEKI, Isao

IPC分类号： G08B17/10 ,  G08B17/107

摘要： A fire detection apparatus 1A includes a detector cover 70A for inhibiting ambient light from entering a detection space 60A, an inner cover 30A that accommodates the detection space 60A and the detector cover 70A, an outer cover 20A that accommodates the inner cover 30A, a first opening 30aA provided in a side portion on an opposite side from a side portion on an installation surface side among side portions of the inner cover 30A, 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 cover 70A, and a flat plate-shaped insect screen 50A provided on the detector cover 70A and configured to substantially cover the entire second opening.

公开(公告)号：EP3779908A1

公开(公告)日：2021-02-17

申请号：EP19774887.4

申请日：2019-03-26

申请人： Hochiki Corporation

发明人： FUJIWARA, Yasuharu ,  SAEKI, Isao ,  TAKANO, Hideki

IPC分类号： G08B17/10 ,  G01V8/10 ,  G08B17/06

摘要： A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and another part of the heat detection unit 110A in the top surface portion 22A and has a plurality of ribs, in which a material of a rib corresponding to a first guard side rib 131A among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side rib 131A among the plurality of ribs is made different from a shape of some other ribs.

公开(公告)号：EP3828530A1

公开(公告)日：2021-06-02

申请号：EP19840959.1

申请日：2019-03-20

申请人： Hochiki Corporation

发明人： SHIMADZU, Tomohiko ,  WASHIZU, Keisuke ,  DOHI, Manabu ,  FUJIWARA, Yasuharu ,  TAKANO, Hideki

IPC分类号： G01N21/53 ,  G08B17/10 ,  G08B17/107

摘要： An occurrence space 32A which is provided in a light shielding space 3A shielded from light from an outside and into which a detection target flows, a first light emitting unit 61A and a second light emitting unit that emit detection light along a first light emitting-side optical axis 611A and a second light emitting-side optical axis toward an occurrence space 32A, a light receiving unit that receives scattered light generated when detection light emitted from the first light emitting unit 61A and the second light emitting unit is scattered by a detection target flowing into the occurrence space 32A along a light receiving-side optical axis intersecting the first light emitting-side optical axis 611A and the second light emitting-side optical axis, and a smoke detection unit cover-side inclined portion 43A that primarily reflects the detection light emitted from the first light emitting unit 61A and the second light emitting unit in a direction intersecting a plane defined by the first light emitting-side optical axis 611A, the second light emitting-side optical axis, and the light receiving-side optical axis are included.