Hot smoke composite type fire detector

A fire detector and composite technology, applied in the direction of fire alarms, electrical fire alarms, instruments, etc., can solve the problems of complicated structure, rising manufacturing cost, difficulty in capturing air, lack of convenience, etc. Simple, damage-preventing effect

Inactive Publication Date: 2009-10-07
NOHMI BOSAI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the invention disclosed in Patent Document 1, when the display lamp (for example, a chip-type LED) is provided on the printed circuit board, even if a viewing window is provided on the protective cover, only the display lamp and the The light of the display lamp can only be seen in a certain direction on the connecting line of the protective cover. If it deviates from this direction, it cannot be seen, so it is not convenient, and the manufacturing cost increases due to the increase in the number of components and the complexity of the structure.
[0007] On the other hand, even if the display lamp is provided to be raised (separated) from the printed circuit board, so that a part protrudes from the through hole formed on the protective cover, it is blocked by the dark room protrudin

Method used

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  • Hot smoke composite type fire detector
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  • Hot smoke composite type fire detector

Examples

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Embodiment Construction

[0041] Hereinafter, a heat-smoke composite fire detector according to an embodiment of the present invention will be described with reference to the accompanying drawings. In each figure, the same reference numerals denote the same parts, so some explanations are omitted.

[0042] Figure 1 to Figure 9 It is a figure explaining the heat-smoke composite type fire detector which is one embodiment of the present invention, figure 1 is a three-dimensional view representing the whole; figure 2 (a) is a top view showing the whole; figure 2 (b) is a partially enlarged top view; image 3 is a side view representing the whole; Figure 4 is the main view representing the whole; Figure 5 is a side sectional view showing the whole; Image 6 yes Figure 5 A partial enlarged cross-sectional view. Figure 7 It is a side sectional view showing parts. Figure 8 is a brief side sectional view showing the whole; Figure 9 It is a partially enlarged cross-sectional view showing a top...

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Abstract

The present invention provides a hot smoke composite type fire detector having a simple structure and capable of observing the light generated by a display lamp in each direction. The hot smoke composite type fire detector (100) includes a main body base (10), a printed circuit board (1), a thermal sensitive element (2), a dark box (3), a display lamp (4) arranged on the printed circuit board (1), a protective cover (30) and a club-shaped photoconductive tube (5) for guiding the light emitted from the display lamp (4) to the outer of the protective cover (30), wherein the photoconductive tube (5) penetrates a throughhole (35) of the photoconductive tube formed on the protective cover (30), and one end face of the photoconductive tube (5) confronts the display lamp (4), the other end face is projected outside the protective cover (30), the projecting height is about identical with a projecting height of the dark box (3) or more than the projecting height of the dark box (3), moreover, the photoconductive tube (5) opposites with the thermal sensitive element (2) after an interval of the dark box (3).

Description

technical field [0001] The invention relates to a heat-smoke composite fire detector. Background technique [0002] In the past, heat-smoke composite fire detectors are usually installed on the ceiling of a room, etc., which include: a temperature detection device to detect air temperature; a smoke detection device to detect smoke in the air; and a judgment device to judge fire hazards based on these detection results. happened. Furthermore, an "indicating lamp" is also included, which blinks to inform that the combined heat and smoke detector is in a normal operating state, or lights up to inform that the combined heat and smoke detector detects a fire. [0003] In the combined heat and smoke fire detector, a printed circuit board on which a judgment device is mounted is provided on a cylindrical main body base, and a temperature detection device and a smoke detection device are provided on the printed circuit board. The temperature detection device is a heat-sensitive el...

Claims

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Application Information

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IPC IPC(8): G08B17/06G08B17/107
Inventor 加藤智广伊藤尚加藤健一
Owner NOHMI BOSAI LTD
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