Abstract: A positioning device for positioning an integration rod module disposed in an optical path between a light source device and a projection lens within a projection apparatus includes a flexible element having a fixing plate section mounted securely on an inner surface of a casing interconnecting the light source device and the projection lens and enclosing the integration rod module, and a first distal plate section extending integrally from one end of the fixing plate section toward a rod cover mounted on the casing for resiliently urging a holder of the rod module to press against the inner surface of the casing at a position opposite to the flexible element. A stop member is disposed securely on the holder adjacent to the rod cover to facilitate abutment of the first distal plate section of the flexible element against the holder to enhance retention of the rod module within the casing.

Abstract: An elevating mechanism for a projection apparatus includes a base, a movable leg, an elastomer, a decelerating module and a fixing component. The base is connected with the projection apparatus and has a slide, an accommodating space and an opening disposed at one end of the base. The accommodating space is located inside the base and communicated with the opening. The slide is in a sidewall of the base and communicated with the accommodating space. The movable leg is disposed through the opening and the accommodating space, and one end of the elastomer is disposed on the base. The movable leg is suitable for protruding from the opening of the base by the elastomer. Moreover, the decelerating module is disposed on the movable leg and is in the slide. The decelerating module is suitable for contacting with the base. The fixing component is suitable for fixing the movable leg.

Abstract: A projection apparatus includes a main body and at least one movement auxiliary device disposed adjacent to the main body to help for moving the projection apparatus. By using the movement auxiliary device, a user can change the position and the projection direction of the projection apparatus easily.

Abstract: A positioning device for positioning an integration rod module disposed in an optical path between a light source device and a projection lens within a projection apparatus includes a flexible element having a fixing plate section mounted securely on an inner surface of a casing interconnecting the light source device and the projection lens and enclosing the integration rod module, and a first distal plate section extending integrally from one end of the fixing plate section toward a rod cover mounted on the casing for resiliently urging a holder of the rod module to press against the inner surface of the casing at a position opposite to the flexible element. A stop member is disposed securely on the holder adjacent to the rod cover to facilitate abutment of the first distal plate section of the flexible element against the holder to enhance retention of the rod module within the casing.

Abstract: A housing and a projection apparatus having the housing are provided. The housing is for accommodating a light source and includes a housing body and a transparent body. The housing body accommodates the light source and has an opening thereon. The transparent body is disposed on the housing body to cover the opening. Moreover, the stray light in the housing passes through the opening and is guided to the outside of the housing body by the transparent body. Therefore, the transparent body is brightened by the stray light and the heat-dissipation problem caused by the stray light projected on the housing can be solved.

Abstract: An elevating mechanism for a projection apparatus includes a base, a movable leg, an elastomer, a decelerating module and a fixing component. The base is connected with the projection apparatus and has a slide, an accommodating space and an opening disposed at one end of the base. The accommodating space is located inside the base and communicated with the opening. The slide is in a sidewall of the base and communicated with the accommodating space. The movable leg is disposed through the opening and the accommodating space, and one end of the elastomer is disposed on the base. The movable leg is suitable for protruding from the opening of the base by the elastomer. Moreover, the decelerating module is disposed on the movable leg and is in the slide. The decelerating module is suitable for contacting with the base. The fixing component is suitable for fixing the movable leg.