Patent ID: 7819535

Claim:
A projection apparatus comprising a light source unit comprising: a lamp; a plate-like cover glass that removes ultraviolet rays from light emitted from the lamp while transmitting the light; and a case that holds the lamp and the cover glass, the case comprising: a front case made of metal that covers a front of the lamp; and an insulating member made of synthetic resin and attachable to an inner side of the front case, wherein the projection apparatus forms and projects an image using the light exiting the light unit source unit, wherein the front case and the insulating member each comprise: an opening that allows the light emitted from the lamp to exit; and a fitting portion into which the cover glass is fitted, the fitting portion being provided around the opening and comprising: a plurality of projected portions that support a part of end surfaces of the cover glass; and a plurality of recessed portions into which the projected portions are respectively fitted, wherein the cover glass is fitted into the fitting portion of the front case, and wherein the respective projected portions of the front case and the insulating member are fitted into the respective recessed portions thereof to attach the insulating member to the front case so that the cover glass is supported by the respective projected portions and is sandwiched and fixed by the front case and the insulating member.