IMAGE PROJECTION DEVICE AND CONTROL METHOD OF IMAGE PROJECTION DEVICE

• Main Author: HOSOI NOBUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.05.2017
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide an image projection device capable of expanding an operation temperature upper limit range.SOLUTION: An image projection device 1 includes: a lamp 17 for emitting light; an image display element 10a for forming an image by using light from the lamp 17; a lamp fan for cooling the lamp 17; and control means for controlling the lamp 17, the image display element 10a, and a lamp fan 25. When the lamp 17 is driven by a drive power by less than the predetermined power, a lamp recovery process for increasing the drive power at least up to the predetermined drive power is executed at a predetermined timing. The control means drives the lamp 17 by less than the drive power, and performs a control for suppressing a temperature rise of the image projection device 1 when it is detected that the drive power is increased up to the predetermined drive power by the lamp recovery process.SELECTED DRAWING: Figure 6 【課題】動作温度上限範囲を拡大することのできる画像投射装置を提供する。【解決手段】光を出射するランプ１７と、ランプ１７からの光を用いて画像を形成する画像表示素子１０ａと、ランプ１７を冷却するランプファンと、ランプ１７、画像表示素子１０ａ、およびランプファン２５を制御する制御手段と、を備え、ランプ１７を所定の駆動電力未満で駆動させると、少なくとも所定の駆動電力まで駆動電力を上昇させるランプリカバリー処理が所定のタイミングで実行される画像投射装置１において、制御手段は、ランプ１７を所定の駆動電力未満で駆動させるとともに、ランプリカバリー処理により所定の駆動電力まで駆動電力が上昇したことを検知した際に、該画像投射装置１の昇温を抑制する制御をする。【選択図】図６