LIGHTING FIXTURE UNIT

• Main Author: SATO TAKAYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To prevent erosion of a seal portion of a spatial light modulator by external light, in a lighting fixture unit including the reflection-type spatial light modulator.SOLUTION: A plate-like member 32 is disposed between a vertical face portion 40A of a bracket 40 supporting a spatial light modulator 30 at a unit front side with respect to the spatial light modulator, and the spatial light modulator 30, and an opening portion 32a surrounding a reflection control portion 30A in a manner of covering a seal portion 30D from the unit front side, is formed on the plate-lie member 32. Thus convergent light is shielded by the plate-like member 32 even when external light is transmitted through a projection lens 72 at an angle to be converged to a seal portion 30D, and erosion of the seal portion 30D is prevented. Further by applying a constitution in which a gasket 34 is disposed between the plate-like member 32 and a housing portion 30B, the plate-like member 32 is supported without applying an excessive load to the spatial light modulator 30, and a function of the spatial light modulator 30 is not degraded.SELECTED DRAWING: Figure 14 【課題】反射型の空間光変調器を備えた灯具ユニットにおいて、外部光によって空間光変調器のシール部が溶損してしまうのを未然に防止する。【解決手段】空間光変調器３０よりもユニット前方側においてこれを支持するブラケット４０の鉛直面部４０Ａと空間光変調器３０との間に板状部材３２が配置された構成とし、かつ、この板状部材３２に、ユニット前方側からシール部３０Ｄを覆うようにして反射制御部３０Ａを囲む開口部３２ａが形成された構成とする。これにより、外部光がシール部３０Ｄに収束する角度で投影レンズ７２を透過した場合にも、この収束光を板状部材３２によって遮光し、シール部３０Ｄの溶損を未然に防止する。その上で、板状部材３２と筐体部３０Ｂとの間にガスケット３４が介装された構成とすることにより、空間光変調器３０に過大な荷重を掛けてしまうことなく板状部材３２の支持を行い、空間光変調器３０の機能が損なわれないようにする。【選択図】図１４