Patent ID: 8465157

Claim:
A projection type image display apparatus for projecting optical fluxes from a light source onto a projection plane so as to display thereon a image, wherein said projection type image display apparatus has a direct projection mode for projecting projection light ahead of said projection type image display apparatus and a reflection mode for projecting projection light to a backside of said projection type image display apparatus, comprising: a reflection mirror arranged in such a manner that said reflection mirror interrupts an optical path of the projection light in said direct projection mode when said reflection mode is set and reflects the projection light to the backside of the projection type image display apparatus, and said projection type image display apparatus is tilted to the backside when said reflection mode is set; and an adjustment leg arranged in a front portion of a bottom plane of said projection type image display apparatus, which is extended to a predetermined leg length, and said projection type image display apparatus is tilted to the backside by extending said adjustment leg; wherein: said adjustment leg has a stopping spring at one end portion of a shaft portion having a screw groove; said stopping spring has a latching portion which is deformed by screwing the shaft portion in a radial direction of said shaft portion; said adjustment leg is extended in a sliding manner due to self-weight of said adjustment leg, and said latching portion of said stopping spring constitutes a stopper; and after said latching portion of said stopping spring abuts, said latching portion is deformed in the radial direction of said shaft portion by screwing said shaft portion to cause the stopper to be released, and said sliding of said adjustment leg is adjusted finely by screwing.