Title:
監視カメラ
Document Type and Number:
Japanese Patent JP6399991
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the impact resistance performance of a monitor camera incorporating a lighting device.SOLUTION: A light shielding unit constituted of a light shielding rubber 161 and a holder 162 is arranged to cover a lens barrel unit 181 movably in the optical axis direction. A coil spring 163 energizes the light shielding unit toward a dome cover 101, and the light shielding unit is brought into tight contact with the dome cover at portion A, by an elastic portion constituting the flank of the light shielding rubber at the tip. The light shielding unit shields incidence of infra-red light, outputted from an infrared lighting device on an infrared illumination electric board 134 and scattered on the dome cover, or the like, to lens barrel unit. At the time of external impact, the light shielding unit regresses while resisting against the energization force of the coil spring. The light shielding rubber may collide, at the elastic part having multiple salients in the circumference on the inside thereof, against the lens barrel unit at portion B, but the impact is relaxed by the elasticity of the elastic part on the inside.SELECTED DRAWING: Figure 2
Inventors:
Hiroyuki Ide
Application Number:
JP2015205238A
Publication Date:
October 03, 2018
Filing Date:
October 19, 2015
Export Citation:
Assignee:
Canon Inc
International Classes:
H04N5/225; G03B11/04; G03B15/00; G03B15/02; G03B15/03; G03B17/02; G03B17/56
Domestic Patent References:
| JP2016163056A | ||||
| JP201288396A |
Foreign References:
| KR100938153B1 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa