| abstract |
An object of the present invention is to improve the thermal conductivity between a sealing portion and a heat conducting portion of an arc tube provided in a light source device, to configure a projector without using a fan, to eliminate fan noise, and from the light source device. Provided is a projector that prevents light from leaking outside the casing. A light source device includes a reflector, a heat dissipating part fixed to the reflector, an arc tube having a fixing part made of a copper plate provided on the sealing part, and a sealing part The heat conduction part 4 (copper sleeve) which is arrange | positioned slidably on an outer peripheral surface and provided with the slit 4a corresponding to the fixing | fixed part 3d, and comprises the coil-shaped spring 5b (biasing means) and the stopper 5c. Further, the fixing portion 3 d is fixed to the guide portion 2 b of the reflector 2. The end of the heat conducting part 4 has a semicircular cross section so as to be in close contact with the light emitting part 3a. The spring 5b (biasing means) biases the heat conducting part 4 in the direction of the light emitting part 3a. is doing. [Selection] Figure 1 |