Color wheel unit, light source device, and projection display apparatus
View Patent ↗A color wheel unit includes a color wheel assembly, a rod integrator, and a holder. The holder includes a first base configured to be attached to a housing of a projection display apparatus, a second base protruding from the first base, and a third base protruding from the second base and to which the rod integrator is attached. The third base includes a first guide wall and a second guide wall configured to guide the color wheel assembly. The color wheel assembly includes a color wheel, a motor configured to rotationally drive the color wheel, and a support part configured to rotatably support the color wheel. The support part includes a first restricting part configured to have a movement thereof restricted and guided by the first guide wall, and a second restricting part configured to have a movement thereof restricted and guided by the second guide wall.
1 . A color wheel unit comprising:
a color wheel assembly including a color wheel;
a rod integrator where light having passed through the color wheel is to be incident; and
a holder to which the color wheel assembly and the rod integrator are attached,
wherein the holder includes:
a first base configured to be attached to a housing of a projection display apparatus;
a second base protruding from the first base; and
a third base protruding from the second base and to which the rod integrator is attached,
wherein the third base includes a first guide wall and a second guide wall configured to guide the color wheel assembly in a case that the color wheel assembly is attached to the holder,
wherein the color wheel assembly includes:
a motor coupled to the color wheel and configured to rotationally drive the color wheel;
a support part configured to rotatably support the color wheel; and
a sensor configured to detect a rotation phase of the motor, and
wherein the support part includes: (i) a first restricting part configured to have a movement thereof restricted and guided by the first guide wall; (ii) a second restricting part configured to have a movement thereof restricted and guided by the second guide wall in the case that the color wheel assembly is attached to the holder; and (iii) a light shielding wall between the rod integrator and the sensor.
2 . The color wheel unit according to claim 1 , wherein:
the first restricting part is a flat plate; and
the first guide wall is a plane parallel to the first restricting part.
3 . The color wheel unit according to claim 1 , wherein:
the second restricting part is a convex part;
the second guide wall is a concave part fitted to the second restricting part; and
the concave part is recessed in a direction in which light is to be incident on the color wheel.
4 . The color wheel unit according to claim 1 , further comprising a guide piece configured to be inserted into in a guide part defined in the housing of the projection display apparatus.
5 . The color wheel unit according to claim 1 , wherein the holder is configured to: (i) be accommodated in an attachment opening on a side of a surface of the housing of the projection display apparatus; and (ii) cover the attachment opening.
6 . The color wheel unit according to claim 1 , further comprising a handle part configured to grip the holder, the handle part being on a first side opposite to a second side where the support part of the holder is attached.
7 . The color wheel unit according to claim 1 , wherein, in the first base, a sheet is configured to be disposed at a position corresponding to a periphery of an opening of the housing of the projection display apparatus on a side attached to the housing of the projection display apparatus.
8 . A projection display apparatus comprising the color wheel unit according to claim 1 .