Attachable/detachable silencer and projection type projector apparatus with the same

• US 6,558,003 B2
• Filed: 09/10/2001
• Issued: 05/06/2003
• Est. Priority Date: 12/28/2000
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Mihara, Hisayuki
• Primary Examiner(s): Gray, David M.
• Assistant Examiner(s): Cruz, Magda
• Application Number:
  US09/948,789
• Publication Number:
  US 20020085178A1
• Time in Patent Office: 603 Days
• Field of Search: 353/31, 353/37, 353/52, 353/57, 353/56, 353/60, 353/61, 353/119, 353/122, 349/58, 349/60, 349/161, 362/296, 165/80.1
• US Class Current: 353/52
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: H04N 5/7441 the modulator being an array of liquid crystal cells
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

The present invention is a projection type projector apparatus which is provided with a light source portion, a light bulb and a cooler for cooling at least the light source portion, with a silencer which takes exhaust air from the cooler once to damp exhaust sound, and a mounting portion for attachably/detachably mounting the silencer to a projection type projector.

Claims

1. A silencer which is mounted to a projection type projector provided with optical function including a light source portion and a light bulb, and cooling means for cooling at least the light source portion by blowing cooling air to the optical function, the silencer comprising:

a silencer main body which takes air flowing in the cooling means or cooling air flowing out of the cooling means into the silencer main body to discharge the same, thereby reducing suction sound or exhaust sound of the cooling means; and

mounting means for attachably/detachably mounting the silencer main body to at least one of a cooling air suction side and a cooling air exhaust side of the cooling means of the projection type projector.

2. A silencer according to claim 1, wherein the mounting means can mount the silencer main body to the projection type projector apparatus attachably/detachably by selecting one of the same direction as an irradiation direction of the light source portion and an opposing direction thereto as a mounting direction, and suction or exhaust direction of the cooling means can be changed to the same direction as the irradiation direction or the opposing direction according to the mounting direction.

3. A silencer according to claim 1, wherein the silencer main body is mounted to an exhaust side of the cooling means, the exhaust sound is damped by taking the cooling air from the cooling means to the silencer main body once to discharge the same outside.

4. A silencer according to claim 1, wherein one of the silencer main bodies is mounted on a suction side of the cooling means, and suction sound of the cooling means is damped by taking outside air into the silencer main body as the cooling air used by the cooling means to supply the same to a suction port of the cooling means;

and

another of the silencer main bodies is mounted on an exhaust side of the cooling means, and exhaust sound of the cooling means is damped by taking the cooling air from the exhaust port of the cooling means into the silencer main body once to discharge the same outside.

5. A silencer which is mounted to a projection type projector provided with optical function including a light source portion and a light bulb, and cooling means for cooling at least the light source portion by blowing cooling air to the optical function, the silencer comprising:

a silencer main body which takes cooling air flowing from the cooling means into the main body to exhaust the same, thereby damping exhaust sound of the silence main body; and

mounting means for attachably/detachably mounting the silencer main body on a cooling air exhaust side of the cooling means of the projection type projector apparatus such that the mounting angle of the silencer main body can be changed continuously so that an exhaust angle of the silencer main body can be changed continuously.

6. A silencer which is mounted to a projection type projector provided with optical function including a light source portion and a light bulb, and cooling means for cooling at least the light source portion by blowing cooling air to the optical function, the silencer comprising:

a silencer main body which takes air flowing into the cooling means or cooling air flowing from the cooling means into the silencer main body to discharge the same, thereby damping suction sound or exhaust sound of the cooling means;

mounting means for attachably/detachably mounting the silencer main body to at least one of a cooling air suction side and a cooling air exhaust side of the cooling means; and

noise damping means for detecting suction sound or exhaust sound in the silencer main body and damping the sound by supplying a sound signal to a sound circuit of the projection type projector apparatus.

7. A silencer according to claim 6, wherein the noise damping means has

suction sound damping means, provided in a first silencer main body provided on a suction port of the cooling means, for detecting suction sound, and supplying a sound signal for damping the suction sound to a sound circuit of the projection type projector apparatus; and

exhaust sound damping means, provided in a second silencer main body provided on an exhaust port of the cooling means, for detecting exhaust sound and supplying a sound signal for damping the exhaust sound to the sound circuit of the projection type projector apparatus.

8. A silencer according to claim 6, further comprising:

a sound output means for receiving a sound output supplied from the sound circuit of the projection type projector apparatus and outputting sound corresponding to the sound output.

9. A silencer according to claim 6, further comprising:

sound output means, provided in the silencer main body, for receiving sound output supplied from the sound circuit of the projection type projector apparatus and outputting sound corresponding to the sound output; and

a basslef port which is provided within the silencer main body and which reinforces the bass range of the sound output from the sound output means.

10. A projection type projector apparatus which irradiates light whose light amount is controlled by a light bulb in a predetermined direction comprising:

a light source provided inside the projection type projector apparatus;

cooling means, provided within the projection type projector apparatus, for cooling at least the light source by blowing cooling air to the light source;

a silencer main body which takes air flowing in the cooling means or cooling air flowing out of the cooling means into the silencer main body to discharge the same, thereby reducing suction sound or exhaust sound of the cooling means; and

mounting means for attachably/detachably mounting the silencer main body to at least one of a cooling airflow suction side and a cooling airflow exhaust side of the cooling means of the projection type projector apparatus.

11. A projection type projector apparatus according to claim 10, wherein the mounting means can mount the silencer main body to the projection type projector apparatus attachably/detachably by selecting one of the same direction as an irradiation direction of the light source portion and an opposing direction thereto as a mounting direction, and suction or exhaust direction of the cooling means can be changed to the same direction as the irradiation direction or the opposing direction according to the mounting direction.

12. A projection type projector apparatus according to claim 10, wherein the silencer main body is mounted to an exhaust side of the cooling means, the exhaust sound is damped by taking the cooling air from the cooling means to the silencer main body once to discharge the same outside.

13. A projection type projector apparatus according to claim 10, wherein one of the silencer main bodies is mounted on a suction side of the cooling means, and suction sound of the cooling means is damped by taking outside air into the silencer main body as the cooling airflow used by the cooling means to supply the same to a suction port of the cooling means;

and

another of the silencer main bodies is mounted on an exhaust side of the cooling means, and exhaust sound of the cooling means is damped by taking the cooling airflow from the exhaust port of the cooling means into the silencer main body once to discharge the same outside.

14. A projection type projector apparatus which irradiates light whose light amount is controlled by a light bulb in a predetermined direction comprising:

a light source provided inside the projection type projector apparatus;

cooling means, provided within the projection type projector apparatus, for cooling at least the light source by blowing cooling air to the light source;

a silencer main body which takes cooling air flowing from the cooling means into the silencer main body once to discharge the same, thereby damping suction sound or exhaust sound of the cooling means; and

mounting means which attachably/detachably mounts the silencer main body on a cooling air exhaust side of the cooling means of the projection type projector apparatus such that the mounting angle of the silencer main body can be changed continuously so that an exhaust angle of the silencer main body can be changed continuously.

15. A projection type projector apparatus which irradiates light whose light amount is controlled by a light bulb in a predetermined direction comprising:

a light source provided inside the projection type projector apparatus;

cooling means, provided within the projection type projector apparatus, for blowing cooling air to the light source in order to cool at least the light source;

a silencer main body which takes air flowing into the cooling means or cooling air flowing from the cooling means into the silencer main body to discharge the same, thereby damping suction sound or exhaust sound of the cooling means;

mounting means for attachably/detachably mounting the silencer main body in the vicinity of the cooling means of the projection type projector;

noise damping means, provided within the silencer main body, for detecting suction sound or exhaust sound within the silencer main body and outputting a sound signal for damping the sound; and

canceling means for canceling the suction sound or the exhaust sound on the basis of the sound signal output from the noise damping means.

16. A projection type projector apparatus according to claim 15, wherein the noise damping means has suction sound damping means which is provided in a first silencer main body provided on a suction port of the cooling means and which supplies a sound signal for detecting suction sound and damping the same to the canceling means, and an exhaust sound damping means which is provided in a second silencer main body provided on an exhaust port of the cooling means and which supplies a sound signal for detecting exhaust sound and damping the same to the canceling means.

17. A projection type projector apparatus according to claim 15, further comprising:

sound output means for outputting sound from the canceling means.

18. A projection type projector apparatus according to claim 15, wherein the canceling means has filter means for receiving sound signal from the noise damping means and causing the sound signal to pass through a band-pass filter with a predetermined frequency band, thereby damping sound other than the suction sound or exhaust sound in the silencer main body.

19. A projection type projector apparatus according to claim 15, further comprising:

a basslef port which is provided within the silencer main body and which reinforces the bass range of the sound output from the sound output means.