JP3091812U - Lamp cooling structure of image display projector - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a lamp cooling structure of an image display projector, air can be directly blown into a lamp bulb to increase the cooling efficiency of the lamp, reduce the number of parts, and reduce the size of the device. Plan. SOLUTION: A color filter 1 of a color wheel 23 is provided.
9, a fan constituted by attaching a blade 20 to the opening 13a of the lamp reflector 13, and the optical axis A of the lamp 12
The lamp is disposed at a position facing the front, so that the wind can be directly blown into the bulb 32 of the lamp 12 from the front without being blocked by the lamp reflector 13. Thereby, the cooling efficiency of the lamp 12 can be improved.
In addition, since the blades 20 are attached to the color filters 19 of the color wheel 23 to form a fan for cooling the lamp, the drive motor for the color filters 19 and the blades 20 can be shared, thereby reducing the number of parts. And the size of the apparatus can be reduced.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention is to cool a lamp of an image display projector that projects an image on a screen or the like. Regarding the structure.

[0002]

[Prior art]

  Conventionally, images are generated based on image data from personal computers, video cameras, etc. An image display projector that projects and displays the image on a screen or the like is known. In this type of device, the temperature around the bulb of the lamp that serves as the light source is high (700 ° C to 1000 ° C). It is necessary to cool around this valve.

[0003]   FIG. 6 shows a lamp cooling structure of a conventional image display projector. Conventional image table In the projector shown, a color wheel for color separation is provided in front of the lamp 112. 123 and the light tunnel 122 for condensing light interfere with the bulb of the lamp 112. A fan 151 for cooling the periphery of the lamp 132 may be installed in front of the lamp 112. I couldn't. Therefore, as shown in FIG. 151 of the lamp reflector 113 is installed on the side of the lamp box 110. The periphery of the valve 132 was cooled from the side.

[0004]   In the field of this type of equipment, the lamp and lamp reflector are evenly cooled. For the purpose of, for example, disposing the fan on the extension of the lamp optical axis and behind the lamp. There is known one provided with (see, for example, Japanese Patent Laid-Open No. 8-114857). Furthermore, for the purpose of downsizing the entire device, the blades are attached to the color wheel. DMD (Digital Micromirror) It is known that the video display device such as a device is cooled. For example, see JP-A-2000-39673 and JP-A-2001-100315. See).

[0005]

[Problems to be solved by the device]

  However, the conventional cooling fan 151 as shown in FIG. In the lamp cooling structure arranged on the side of the box 110, the fan 151 to the lamp 11 Since the wind sent to the fan 2 is blocked by the lamp reflector 113, the fan 1 51 blows air directly to the bulb 132, which has the highest temperature around the lamp 112. Therefore, there is a problem that the cooling efficiency is poor. Also run Since a dedicated fan 151 is provided to cool the lamp 112, In addition to the driving motor for driving the fan 123, a driving motor for driving the fan 151 is required. The number of parts increases and the cost increases, and the fan 151 and its drive motor There is a problem that a storage space is required, which leads to an increase in size of the device.

[0006]   Further, the above-mentioned JP-A-8-114857 and JP-A-2000-39673. And any of the inventions disclosed in Japanese Patent Laid-Open No. 2001-100315, The pump cannot be cooled efficiently.

[0007]   The present invention has been made to solve the above-mentioned problems, and is applied to a lamp bulb. Allowing direct air flow to improve the cooling efficiency of the lamp, Image display projector lamp that can reduce the number of parts and downsize the device It is intended to provide a cooling structure.

[0008]

[Means for Solving the Problems]

  In order to achieve the above object, the invention of claim 1 is a lamp having an electrode and a bulb. Has an opening for emitting light and reflects the light emitted from the lamp and collects it. Lamp reflector and the light collected by the lamp reflector into multiple colors. Color filter to be solved, and color having motor for driving this color filter Lamp for image display projector with wheel and fan to cool the lamp In the cooling structure, the color wheel faces the opening of the lamp reflector, The fan is installed in a position facing the optical axis of the This is a filter with blades attached, which sends air directly to the lamp bulb from the front. It is configured to be able to slip in.

[0009]   In the above configuration, the blades are attached to the color filters of the color wheel. The fan faces the opening of the lamp reflector and faces the optical axis of the lamp from the front. Since the wind is sent from the lamp to the lamp, the lamp is not blocked by the lamp reflector. Wind can be sent directly to the valve from the front. This allows the lamp to cool The efficiency can be increased. Also, attach the blades to the color wheel to cool the lamp. By configuring the rejection fan, the color wheel and the fan drive motor can be Since it can be shared, a fan-dedicated motor is not required and the number of parts is reduced. Can be achieved. Furthermore, a color wheel and a fan for cooling the lamp are installed. Due to the integrated structure, the storage space for these members can be reduced. it can.

[0010]   The invention of claim 2 is the same as the invention of claim 1, wherein a side wall of the lamp reflector is provided. It has a ventilation hole. In this configuration, the fan is the lamp bulb. The air sent directly from the front is sent through the ventilation holes on the side wall of the lamp reflector. Since it can be exhausted from the The rejection efficiency can be improved.

[0011]   Further, the invention of claim 3 is a lamp having an electrode and a bulb, and the lamp emits light. Color filter for separating emitted light into a plurality of colors, and driving of this color filter Image table equipped with a color wheel having a motor for driving and a fan for cooling the lamp In the projector lamp cooling structure, the fan is integrated with the color wheel. It is designed to be able to blow air directly into the lamp bulb. It is composed of.

[0012]   In this configuration, the fan integrated with the color wheel is Since the wind can be sent directly to the bulb of the You can In addition, the color wheel and the fan for cooling the lamp are integrated. This makes it possible to reduce the storage space for these members, and The number of points can be reduced.

[0013]   The invention of claim 4 is the same as the invention of claim 2, wherein the color wheel is a lamp. It is arranged at a position facing the optical axis from the front. In this configuration, The fan, which is integrated with the wheel, directly blows air onto the lamp bulb from the front. Can be sent, so that the above-mentioned effect can be obtained accurately.

[0014]

[Embodiment of device]

  Embodiments embodying the present invention will be described below with reference to the drawings. Figure 1 , Showing an appearance of an image display projector to which the lamp cooling structure according to the present embodiment is applied. You The image display projector 1 (hereinafter abbreviated as a projector) is a computer or a video An image is generated based on the image data input from the camera and the image is screened. It is a device for projecting and displaying it on a computer. The projector 1 includes an outer case 3 of the device body 2. A projection lens 5 for projecting an image on the front side of the Used for remote control receiver 6 for receiving signals and for cooling the lamp inside the device body 2. The outlet 8 for discharging the used air to the outside of the apparatus main body 2. Have Further, on the side surface of the outer case 3 of the apparatus body 2, there is air for cooling the lamp. A ventilation port 9 is provided for taking in the inside of the apparatus main body 2.

[0015]   Next, the internal configuration of the projector 1 will be described with reference to FIG. apparatus In the outer case 3 of the main body 2, the lamp box 10 and the lamp box 10 A caster for generating and projecting an image based on the light from the lamp 12 stored therein. The swing engine 11 is provided. The lamp box 10 is a light source Lamp 12 and a lamp reflector for reflecting and condensing the light emitted from the lamp 12. Infrared rays and ultraviolet rays from the light emitted from the lamp 13 and the lamp reflector 13. And a cut filter 14 for holding the same. Also, the casting engine 11 , A tab for correcting the influence of wavelength or the like on the light entering the engine 11. The reflection mirror that reflects the light emitted from the let lens 16 and the tablet lens 16. DMD (which generates an image based on the light guided by the reflection mirror 17 and the reflection mirror 17 ( Digital Micromirror Device) 18, image generated by DMD 18 It has a projection lens 5 and the like for projecting. Also, the lamp box 10 and the casters Between the wing engine 11 and the plate glass, four sheets of glass were laminated to form a tubular shape. Color separation color driven by the light tunnel 22 and the motor 34 (see FIG. 3). And a wheel 23. This color wheel 23 has red, blue, green, It has a color filter 19 in which white filters are arranged along the circumferential direction. In addition, an aluminum alloy for cooling the lamp 12 is provided at a side end portion of the color filter 19. A blade made of aluminum (hereinafter abbreviated as an aluminum blade) 20 is attached. This color The filter 19 and the aluminum blades 20 are driven by the motor 34. The number of rotations Is, for example, 7200 rpm.

[0016]   Next, with reference to FIG. 3, a lamp cooling structure adopted in the projector 1 will be described. The structure will be described. The lamp 12 mainly includes an electrode 31 and a glass that covers the electrode 31. And a valve 32 made of an insulating material. Also, color wheel 2 As shown in the drawing, reference numeral 3 denotes an opening 13 provided in the front portion of the lamp reflector 13. It is disposed at a position facing a and facing the optical axis A of the lamp 12 from the front. The color filter 19 and the lens attached to the side end of the color filter 19 Mi blade 20 and a model for driving the aluminum blade 20 and the color filter 19. Data 34.

[0017]   The aluminum blade 20 attached to the color filter 19 is used when projecting an image. Further, driven by the motor 34, the bulb 32 of the lamp 12 is directly cooled from the front side. Send the wind. This wind is generated by the openings 10a, 10 arranged on the front surface of the lamp box 10. It flows into the lamp box 10 from b. And it flowed in through the opening 10a. The cooling air (air) sent by the wind blows inside the lamp box 10 in the figure. Flow through the paths indicated by arrows B, C, D and E of FIG. After cooling the periphery, the exhaust gas is discharged from the opening 10c provided on the side surface of the lamp box 10. Will be issued. In addition, the cooling air sent by the wind flowing from the opening 10b is In the lamp box 10, flow along the paths shown by arrows F, D, E in the figure. , Cool the area around the bulb 32 of the lamp 12 and place it on the side of the lamp box 10. It is discharged from the provided opening 10c. In this way, the projector 1 In the cooling structure of the existing lamp, the aluminum blade 20 driven by the motor 34 The air sent into the lamp box 10 is the most Since the high temperature bulb 32 is directly cooled, the cooling efficiency of the lamp 12 is improved. You can

[0018]   Next, referring to FIG. 4, how to attach the aluminum blade 20 to the color filter 19 The method will be explained. To attach the aluminum blade 20 to the color filter 19, The fixing rings 36 and 37 made of aluminum and the screw 38 are used. Retaining ring Reference numeral 36 is a member integrally formed with the aluminum blade 20. 20 aluminum blades When attaching to the color filter 19, the fixing ring 36 and the color filter 19 After applying an adhesive between the fixing ring 37 and the color filter 19, As shown in the figure, the fixing ring 36 and the fixing ring 37 form a color filter. 19 is sandwiched, and the fixing ring 36 and the fixing ring 37 are screwed together by the screw 38. . As a result, the aluminum blade 20 integrally formed with the fixing ring 36 is color-filled. Attached to the switch 19.

[0019]   FIG. 5 shows the light of the color wheel 23 after the aluminum blade 20 is attached. The state seen from the box 10 side is shown. Circumferential direction of R, B, G, W filters At a side end portion of the color filter 19 arranged along the direction, a fixing ring shown in the drawing is provided. 37, the screw 38 and the fixing ring 36 shown in FIG. Four attached fans are provided, and the color filter 19 is It is attached to the motor 34 shown in FIG. 3 by a fixing ring 35. In the figure The shaft 41 is a rotation shaft of the motor 34.

[0020]   As described above, according to the lamp cooling structure of the projector 1 according to the present embodiment, , Aluminum wheel 20 is attached to the color filter 19 of the color wheel 23 The fan facing the opening of the lamp reflector 13 is facing the optical axis of the lamp 12 and the front. This fan blows air into the lamp 12 from the opposite position, The wind is sent directly to the bulb 32 of the lamp 12 from the front side without being blocked by the nozzle 13. Can be crowded. Thereby, the cooling efficiency of the lamp 12 can be improved. In addition, a fan for cooling the lamp by attaching the aluminum blade 20 to the color filter 19 In order to drive the color filter 19 and the aluminum blades 20 by configuring Since the motor 34 can be shared, the motor dedicated to the fan becomes unnecessary, The number of parts can be reduced. This will reduce costs. Wear. Furthermore, the color wheel 23 and the fan for cooling the lamp are integrally configured. By doing so, the storage space for these members can be reduced, so It is possible to reduce the size of the entire device.

[0021]   The present invention is not limited to the above embodiment, and various modifications can be made. is there. For example, a vent hole may be provided in the side wall of the lamp reflector. This allows A fan constructed by attaching aluminum blades to the color filter directly connects to the lamp bulb. Since the air sent from the front side can be exhausted from the ventilation hole, the ventilation hole must be installed. The cooling efficiency of the lamp can be increased as compared with the case where the lamp is not turned on. Also, above In the embodiment, an example in which the aluminum blade 20 is attached to the side end of the color filter 19 However, the mounting position of the blade to the color filter is not limited to this, and for example, -Install small aluminum blades on the border of each color filter that makes up the filter May be. Furthermore, the blades attached to the color filter are limited to aluminum. Instead, it may be made of a material such as metal that can withstand a certain high temperature.

[0022]

[Effect of device]

  As described above, according to the invention of claim 1, the color fill of the color wheel is Fan with blades attached to the lamp, without being blocked by the lamp reflector. Wind can be sent directly to the valve from the front. This allows the lamp to cool The efficiency can be increased. Also, attach the blades to the color wheel to cool the lamp. By configuring the fan for rejection, the motor dedicated to the fan is not required. The number of products can be reduced. This can reduce costs It Furthermore, the color wheel and the fan for cooling the lamp are integrally configured. By doing so, it is possible to reduce the storage space for these members. The overall size can be reduced.

[0023]   Further, according to the invention of claim 2, a ventilation hole is provided in the side wall of the lamp reflector. By this, the cooling efficiency of the lamp can be improved.

[0024]   Further, according to the invention of claim 3, a fan integrally formed with the color wheel. However, since it is possible to blow air directly into the lamp bulb, The same effect as described above can be obtained.

[0025]   Further, according to the invention of claim 4, a fan integrally formed with the color wheel. However, since the wind can be sent directly to the lamp bulb from the front, the above effect Can be obtained accurately.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of an image display projector to which a lamp cooling structure according to an embodiment of the present invention is applied.

FIG. 2 is a partially cutaway plan view showing an internal configuration of the projector.

FIG. 3 is a diagram showing a cooling structure of a lamp used in the projector.

FIG. 4 is a diagram showing a configuration around a mounting portion of an aluminum blade to a color filter stored in the projector.

FIG. 5 is a view showing a color wheel after the aluminum blade is attached.

FIG. 6 is a diagram showing a lamp cooling structure in a conventional projector.

[Explanation of symbols]

1 Image display projector 12 lamps 13 lamp reflector 13a opening 19 color filters 20 aluminum blades 23 color wheel 31 electrodes 32 valves 34 Motor (Color filter driving motor) A optical axis (optical axis of lamp)

Claims (4)

[Scope of utility model registration request] 1. A lamp having an electrode and a bulb, a lamp reflector having an opening for emitting light, and reflecting and condensing light emitted from the lamp, and light condensed by the lamp reflector. In a lamp cooling structure of an image display projector including a color filter having a color filter that decomposes the color into a plurality of colors, and a fan that drives the color filter, and a fan that cools the lamp. The fan is installed at a position facing the opening of the reflector and facing the optical axis of the lamp from the front. Lamp of the image display projector, which is characterized in that Structure. 2. The lamp cooling structure for an image display projector according to claim 1, wherein a ventilation hole is provided in a side wall of the lamp reflector. 3. A lamp having an electrode and a bulb, a color filter for separating light emitted from the lamp into a plurality of colors, a color wheel having a motor for driving the color filter, and a fan for cooling the lamp. In a lamp cooling structure for an image display projector including: the fan is configured integrally with the color wheel, and is configured to be able to directly blow air into the bulb of the lamp. A lamp cooling structure for an image display projector characterized by the above. 4. The lamp cooling structure for an image display projector according to claim 3, wherein the color wheel is arranged at a position facing the optical axis of the lamp from the front.