DISTANCE MEASUREMENT DEVICE
To provide a distance measurement device that properly flows gas in a flow channel, and can suppress a reverse flow of the gas upon emitting the gas from an exhaust hole.SOLUTION: A distance measurement device of the present invention has in an exterior surface of a housing storing an irradiation un...
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Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a distance measurement device that properly flows gas in a flow channel, and can suppress a reverse flow of the gas upon emitting the gas from an exhaust hole.SOLUTION: A distance measurement device of the present invention has in an exterior surface of a housing storing an irradiation unit and an imaging unit, a first transmissive part that light to be irradiated from an irradiation unit transmits. and a second transmissive part that light to be photographed by an imaging unit transmits. Further, around the exterior face of the housing, a flow channel formation member is provided that forms a flow channel for flowing gas along the exterior surface of the housing having the first transmissive part and the second transmissive part formed. In the flow channel formation member, a first exhaust hole is formed at a location facing the first transmissive part, and a second exhaust hole broader in an aperture area that the first exhaust hole is formed at a location facing the second transmissive part. The flow channel includes: a first flow channel part that is adjacent to the first exhaust hole; a second flow channel part for making gas detouring the first exhaust hole and passing through the first flow channel flow toward the second exhaust hole.SELECTED DRAWING: Figure 5
【課題】流路内に気体を適切に流し、排気孔から気体を排出させる際には気体の逆流を抑えることが可能な距離計測装置を提供する。【解決手段】本発明の距離計測装置は、照射部と撮影部とを収容する筐体の外壁面に、照射部から照射される光が透過する第一透過部と、撮影部によって撮影される光が透過する第二透過部と、を有する。また、筐体の外壁面の周りには、第一透過部及び第二透過部が形成された筐体の下面との間に気体を流すための流路を形成する流路形成部材が設けられている。流路形成部材において第一透過部に面する位置には第一排気孔が形成されており、第二透過部に面する位置には、第一排気孔よりも開口面積が広い第二排気孔が形成されている。流路は、第一排気孔と隣接する第一流路部分と、第一排気孔を逸れて第一流路部分を通過した気体を第二排気孔に向かって流すための第二流路部分と、を備える。【選択図】図5 |
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