Projection-type display device and tool for replacing lamp

The invention provides a projection-type display device and a tool for replacing a lamp, which is used for the device. In the projection-type display device, under the condition of replacing a damaged lamp during keeping the lamp in a lamp unit state, sheet glass and the like can be reliably prevented from being scattered; when the tool (19) for replacing the lamp is mounted and a lamp unit fixing claw releasing rib (22) is inserted forwards along the direction of an arrow A in a graph into a slot (181), the lamp unit fixing claw releasing rib (22) advances along a fixing claw plane (18a) of a lamp unit fixing claw (18), which is used as the underside of the slot (181); when the lamp unit fixing claw releasing rib (22) reaches a fixing claw bevel (18b) of the lamp unit fixing claw (18), the lamp unit fixing claw (18) is jacked up towards the direction of an arrow B so as to release the clamping of the lamp unit fixing claw (18) on a lamp unit body (4a); when the clamping is released, a lamp unit (4) falls int