Title:
トンネル防災設備
Document Type and Number:
Japanese Patent JP7431055
Kind Code:
B2
Abstract:
To solve problems for example, in a water spray facility provided as a tunnel disaster prevention facility, an insect or dust may enter from a water spray hole of a water spray head, and depending on a surrounding environment condition such as presence of an exhaust gas of a car, a metallic pipe or a spray hole is subjected to decay, and a prescribed water sprinkling performance may not be maintained, and as for the countermeasure I which a dust proof cap is fitted to the spray hole and a water spray facility is actuated, manual fitting work is required and after the water spray, furthermore, since many water spray heads are provided in a tunnel, labor and time are required for fitting works, in addition, water spray is performed not only in fire disaster and but also in inspection, and in fitting work of the water spray head in inspection, sometimes, road block or traffic regulation may be required.SOLUTION: In a normal state in which water is not sprayed, a gas such as air is discharged from a spray hole so that an insect, dust, and an exhaust gas are prevented from entering a water spray head 22.SELECTED DRAWING: Figure 1
Inventors:
Osamu Nakagawa
Application Number:
JP2020030982A
Publication Date:
February 14, 2024
Filing Date:
February 26, 2020
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
A62C3/00; A62C35/62
Domestic Patent References:
| JP2000093537A | ||||
| JP2228976A | ||||
| JP62057568A | ||||
| JP5277781A | ||||
| JP2000135586A | ||||
| JP2020026913A | ||||
| JP2009540996A |
Foreign References:
| CN101244323A | ||||
| KR741032B1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Ebisu International Patent Office
Mikio Suzuno
Mikio Suzuno