JP2008241938A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a projector capable of surely discharging dust inside, and saving trouble in removing the dust accumulated inside. <P>SOLUTION: The projector 1 is equipped with: a first fan unit 26 having a first large-sized fan 26a and a second large-sized fan 26b for cooling a lamp 25 or the like; a second fan unit 27 having a small-sized fan 27a rotating in one direction; a control part 30 controlling each part of the projector; and a memory 29 stored with various kinds of information. When a user operates a power button 22a while the control part 30 acts in a cleaning mode, the control part 30 controls to rotate the small-sized fan 27a to scatter the dust inside a housing 10 in a direction shown by a black arrow in figure, and also reversely rotate the first large-sized fan 26a and the second large-sized fan 26b. Thus, the dust scattered by the rotation of the small-sized fan 27a is discharged in the direction shown by the black arrow in figure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projector, and more particularly to a technique for discharging dust inside an apparatus.

  Conventionally, a projector that cools a light source or the like by flowing outside air into the apparatus by rotating a fan is known. This type of projector may break down when used for a long time because dust accumulates inside the apparatus. Therefore, maintenance work for removing dust inside the apparatus periodically is necessary.

Patent Document 1 and Patent Document 2 disclose a projector that can discharge dust accumulated inside the apparatus to the outside by reversely rotating a fan provided inside the apparatus to cool a light source or the like. ing. However, these projectors cannot reliably discharge the dust accumulated inside the apparatus. Therefore, it is not possible to sufficiently reduce the maintenance work.
JP-A-8-201917 JP 2004-64010 A

  The present invention has been made to solve the above-described problem, and provides a projector that can reliably discharge dust inside the apparatus and can reduce the trouble of removing dust accumulated inside the apparatus. With the goal.

  In order to achieve the above object, the invention of claim 1 is directed to signal input means for inputting image data output from a personal computer, a video camera or the like, a light source for emitting image projection light, and emission from the light source. Image forming means for forming an image based on the image data input from the signal input means using the emitted light, a lens for enlarging and projecting the image formed by the image forming means, and a user operated , Operating means for instructing the apparatus, two large fans for cooling the light source, a small fan that is smaller than the large fan and rotates in one direction, and controls each part of the apparatus In a projector comprising a control means and a storage means for storing a program for operating the control means, the storage means includes the control A program for operating the stage in a cleaning mode for removing dust accumulated in the apparatus is further stored, and the control means rotates the small fan when operating in the cleaning mode. The dust inside is scattered, and the dust scattered by the rotation of the small fan is rotated outside the two large fans and discharged outside the apparatus.

  According to a second aspect of the present invention, there is provided a light source that emits light for image projection, an image forming unit that forms an image based on image data input from a computer using the light emitted from the light source, and the light source. In a projector comprising: a first fan for cooling the first fan; a second second fan different from the first fan; and a control means for controlling each part of the apparatus. The control means is stored in the apparatus. The control means is operable in a cleaning mode for removing dust, and when operating in the cleaning mode, the control means reversely rotates the second fan to scatter dust inside the apparatus, The dust scattered by the rotation of the fan is discharged to the outside by rotating the first fan in the reverse direction.

  According to a third aspect of the present invention, in the projector according to the second aspect, the first fan includes a plurality of large fans.

  According to the first aspect of the present invention, the dust scattered by the rotation of the small fan can be discharged to the outside of the apparatus by rotating the two large fans in reverse, so that the dust inside the apparatus is surely discharged to the outside of the apparatus. be able to. As a result, it is possible to reduce the trouble of maintenance work for removing dust inside the apparatus, and it is possible to reduce the failure rate of the apparatus due to dust accumulated inside the apparatus.

  According to the second aspect of the present invention, the dust scattered by the rotation of the second fan can be discharged to the outside of the apparatus by rotating the first fan in the reverse direction. Can be discharged. As a result, it is possible to reduce the trouble of maintenance work for removing dust inside the apparatus, and it is possible to reduce the failure rate of the apparatus due to dust accumulated inside the apparatus.

  Hereinafter, a projector according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 shows the appearance of the projector 1, and FIGS. 2 and 3 show the internal configuration of the projector 1. FIG. 2 shows a state where the large fans 26a and 26b are rotating in the normal direction, and FIG. 3 shows a state where the large fans 26a and 26b are rotating in the reverse direction. The projector 1 is a device that forms an image using image data input from, for example, a personal computer or a video camera, and projects the formed image on a screen (not shown) provided in front of the image. .

  The projector 1 includes a housing 10, a signal input unit (signal input unit) 23 to which image data output from a personal computer, a video camera, or the like is input, and a lamp (light source) 25 that emits light for image projection. An image forming unit (image forming unit) 24 that forms an image based on image data input from the signal input unit 23 using the light emitted from the lamp 25 and an image formed by the image forming unit 24 are enlarged. And a lens 21 for projection.

  In addition, the projector 1 is operated by a user and has an operation unit (operation unit) 22 for instructing the apparatus, a first fan unit 26 for cooling the lamp 25 and the like, and a small fan that rotates in one direction. A second fan unit 27 having 27a, a photodiode 28 capable of measuring the intensity of light, an LED 13 capable of notifying various warnings to a user, and a memory (storage means) storing various information ) 29 and a control unit (control means) 30 for controlling each part of the apparatus.

  The memory 29 stores a program for operating the control unit 30, a reference value of the light intensity of the lamp 25 measured by the photodiode 28, and the like. The program stored in the memory 29 causes the control unit 30 to operate in a normal mode in which an image can be projected, notifies the user that dust has accumulated inside the apparatus, and removes dust. It can be operated as a cleaning mode for prompting the user.

  The control unit 30 controls the LED 13, the operation unit 22, the signal input unit 23, the image forming unit 24, the lamp 25, the first fan unit 26, the second fan unit 27, the photodiode 28, and the memory 29.

  The first fan unit 26 includes a first large fan 26a and a second large fan 26b. A first fan unit 26 is provided on one side surface inside the housing 10, and a second fan unit 27 is provided on the other side surface. The small fan 27a is smaller than the size of the two large fans 26a and 26b.

  When the control unit 30 operates in the normal mode, the first large fan 26a and the second large fan 26b are rotated as shown in FIG. 11 and 12 in the direction of the white arrow in the figure. Outside air blown into the inside of the housing 10 passes through the inside of the housing 10 and is vented to the outside of the housing 10 through a vent hole (not shown) formed in the side surface of the housing 10 on the side where the small fan 27a is located. Is done.

The operation unit 22 includes a power button 22a for instructing reverse rotation of the first fan unit 26 and rotation of the second fan unit 27, and buttons 22b and 22c for instructing the control unit 30 to perform various operations. Have

  The photodiode 28 measures the intensity of light emitted from the lamp 25 and outputs the measured intensity of light to the control unit 30. The LED 13 is controlled to be turned on by the control unit 30 and notifies the user that dust is accumulated inside the housing 10.

  The control unit 30 measures the intensity of light emitted from the lamp 25 using the photodiode 28, and the measured light intensity is equal to or less than the reference value of the light intensity stored in the memory 29. The LED 13 is turned on to operate in the cleaning mode. The control unit 30 turns on the LED 13 to notify the user that dust has accumulated inside the housing 10.

  When the control unit 30 is operating in the cleaning mode, when the user operates the power button 22a in the operation unit 22, the control unit 30 rotates the small fan 27a as shown in FIG. 10 dust is scattered in the direction of the black arrow in the figure, and the first large fan 26a and the second large fan 26b are rotated in reverse. Thereby, the dust scattered by the rotation of the small fan 27a is discharged in the direction of the black arrow in the figure.

  As described above, according to the projector 1 according to the present embodiment, the dust scattered by the rotation of the small fan 27a is rotated outside the housing 10 by rotating the first large fan 26a and the second large fan 26b in reverse. Since it can be discharged, the dust inside the housing 10 can be reliably discharged outside the housing 10. Thereby, the labor of the maintenance work for removing the dust inside the housing 10 can be reduced, and the failure rate of the apparatus due to the dust accumulated inside the housing 10 can be reduced.

  In addition, this invention is not limited to the structure of said embodiment, A various change is possible in the range which does not change the meaning of invention. For example, in the above embodiment, the example in which the control unit 30 turns on the LED 13 when dust is accumulated inside the housing 10 is shown, but the present invention is not limited thereto. For example, when the projector 1 further includes a warning sound generation unit and dust is accumulated in the housing 10, the control unit 30 controls the warning sound generation unit to emit a warning sound and You may notify a user that dust has accumulated.

1 is a perspective view of a projector according to an embodiment of the invention. The block diagram which shows the structure of the said projector. The block diagram which shows the structure of the said projector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 21 Lens 22 Operation part (operation means)
23 Signal input section (signal input means)
24 Image forming unit (image forming means)
25 Lamp (light source)
26 First fan unit (first fan, large fan)
26a First large fan (first fan, large fan)
26b Second large fan (first fan, large fan)
27 Second fan unit (second fan, small fan)
27a Small fan (second fan)
29 Memory (memory means)
30 Control unit (control means)

Claims (3)

A signal input means for inputting image data output from a personal computer or a video camera;
A light source that emits light for image projection;
Image forming means for forming an image based on image data input from the signal input means using light emitted from the light source;
A lens for enlarging and projecting the image formed by the image forming means;
Operating means operated by a user to give instructions to the device;
Two large fans for cooling the light source;
A small fan that is smaller than the size of the large fan and rotates in one direction;
Control means for controlling each part of the device;
In a projector comprising storage means for storing a program for operating the control means,
The storage means further stores a program for operating the control means in a cleaning mode for removing dust accumulated in the apparatus,
When the control means operates in the cleaning mode, the small fan is rotated to disperse dust inside the apparatus, and the dust scattered by the rotation of the small fan is reversely rotated by the two large fans. A projector characterized by being discharged to the outside. A light source that emits light for image projection;
Image forming means for forming an image based on image data input from a computer or the like using light emitted from the light source;
A first fan for cooling the light source;
A second fan different from the first fan;
In a projector comprising control means for controlling each part of the device,
The control means is operable in a cleaning mode for removing dust accumulated in the apparatus,
When operating in the cleaning mode, the control means reversely rotates the second fan to disperse the dust inside the apparatus, and removes the dust scattered by the rotation of the second fan. A projector characterized by being reversely rotated and discharged outside the apparatus.   The projector according to claim 2, wherein the first fan includes a plurality of large fans.

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