Rear projector and producing method thereof
AssigneeSeiko Epson Corporation
InventorsJun Arai, Haruyoshi Yamada
Life of this patent
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Abstract
A rear projector (1) has a lower cabinet (13) disposing an image generator and an upper cabinet (12) for a screen body (51) to be mounted, two woofer boxes (60) being mounted on the front side of the lower cabinet (13) and high-pitched sound speaker boxes (70) being respectively mounted on the right and left lateral sides of the upper cabinet (12), so that, since the woofer box (60) is disposed in the lower cabinet (13), vibration is not easily transferred to a screen body (51) on the upper cabinet (12) and a reflection mirror inside the upper cabinet (12), thus avoiding flicker of the image on the screen body (51) even when great volume of sound is outputted by the woofer box (60).
Claims5
A rear projector comprising:
- an image generator including an optical device that modulates a light bean irradiated by a light source to form an optical image in accordance with image information, and a projection optical system that enlarges and projects the optical image;
- a sound output that outputs sound in accordance with sound information inputted together with the image information;
- a box-shaped casing that disposes the image generator;
- and
- a screen exposed on one of the sides of the casing onto which the optical image generated by the image generator is projected,
- wherein the casing has a lower casing that disposes the image generator and an upper casing provided with the screen,
- wherein the sound output has a low-pitched sound speaker and a high-pitched sound speaker,
- wherein the low-pitched sound speaker is provided on the lower casing and the high-pitched sound speaker is provided on a side of the upper casing intersecting a side on which the screen is provided.
A producing method of a rear projector, the rear projector comprising:
- an image generator including an optical device that modulates a light bean irradiated by a light source to form an optical image in accordance with image information, and a projection optical system that enlarges and projects the optical image;
- a box-shaped casing that disposes the image generator;
- a screen exposed on one of the sides of the casing onto which the optical image generated by the image generator is projected;
- and a sound output provided on a side of the casing intersecting the side provided with the screen and disposed in a casing component independent of the casing, the sound output outputting sound in accordance with sound information inputted together with the image information,
- the casing comprising a front section having an opening for the screen to be attached and a body section in which an optical path of the light beam irradiated by the projection optical system is set,
- the method comprising the steps of:
- attaching the screen on the front section;
- attaching the front section attached with the screen to the body section;
- and
- after attaching the front section, fixing the casing component disposing the sound output to the front section to be attached to a lateral side of the body section.
Dependencies are inferred from the claim text.