JP2001330890A - Light source device and projection type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light source device with low noise by drastically improving the cooling efficiency and the heat radiation of a heat source such as a light source lamp in a projection type display device. SOLUTION: This device is equipped with a mechanism for automatically opening/closing an air guiding port according to attachment/detachment of the light source lamp, so that a compact fan is used by fully opening a reflector aperture part, suppressing draft resistance at a minimum and drastically improving cooling performance in the case of using the light source lamp, and heat radiation can be surely sealed by fully closing the aperture part at the time of exchanging the light source lamp.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention decomposes white light from a light source lamp into three color lights of red, blue and green, and makes each of these lights correspond to image information through a light valve composed of, for example, a liquid crystal panel. The light source device used in a projection type display device or the like that performs color synthesis of the modulated light of each color after the modulation and enlarges and projects the modulated light on a screen via a projection lens unit, and efficiently cools the light source; The present invention relates to an apparatus and a method capable of remarkably suppressing noise of an exhaust fan.

[0002]

2. Description of the Related Art In recent years, a projection type liquid crystal display device uses a high-resolution light valve device, for example, a liquid crystal panel, to project image information more clearly. Have been. Also, with the spread of personal computers such as notebook personal computers, electronic presentations are also frequently used, and small and lightweight projection display devices with excellent portability are strongly desired as image output devices such as notebook personal computers. In addition, because of its small size and light weight, it can be used for small meetings, and a projection type display device with low ventilation noise is also strongly desired.

On the other hand, as the luminance increases, the rated input power of the light source lamp also increases, and the cooling performance of the constituent optical element parts and the like has become an important issue. In particular, in the light source device, high input power has been promoted contrary to the downsizing of the light source unit, and a reflector as a reflector and glass on the front to ensure safety in the event of a light source explosion, and the light source is sealed. Used in close condition. Therefore, in order to adjust the cooling to the optimal temperature condition of the light source, it is not possible to achieve cooling of the light source only by cooling around the reflector, and it is common to provide an opening for air guide for cooling the light source in some reflectors The temperature has been adjusted to the optimal temperature condition of the light source by cooling by blowing air from the opening.

[0004] However, it has been difficult to achieve both miniaturization and lamp cooling performance due to the addition of parts for preventing scattering at the time of explosion and the increase in size of the apparatus itself.

In addition, since unnecessary light from the light source lamp leaks to the outside of the apparatus, a light shielding member is added, the ventilation resistance becomes excessive with the miniaturization, and the exhaust fan is rotated at high speed to secure the cooling performance. There was a problem that the blowing noise for the air was excessive.

FIG. 7 is a side view showing the structure of a light source device used in a conventional projection display device or the like. FIG. 8 is a plan view of a conventional projection display device. The structure of a conventional light source device will be described with reference to the drawings.

In the conventional projection type display device, 1 is a light source lamp, 2 is white light from the light source lamp 1 in red,
This is a light irradiation unit that separates the colors into blue and green, and collects the separated lights. Reference numeral 3 denotes a liquid crystal panel unit for modulating the light condensed by the light irradiation unit 2 in accordance with image information, and a light combining unit 4 for color-combining the modulated light with a light valve composed of the liquid crystal panel unit 3. And form image information. Further, an image is enlarged and projected on a screen by a projection optical unit 5 for enlarging and projecting the light synthesized by the color synthesizing unit 4. In addition, the power supply unit 6 includes a power supply unit 6 serving as a driving source for driving a light source lamp unit and an electric device, and a signal processing circuit (not shown).

In this type of projection display device, the self-heating of the light source lamp 1 having a strong light output, the temperature rise of optical element parts such as the liquid crystal panel unit 3 to which the light emitted from the light source lamp 1 enters, and the power supply unit 6 Generally, forced cooling is necessary for heat generation due to the loss of each device, etc., and each cooling using multiple cooling fans etc. corresponding to the cooling block for light source lamp, liquid crystal panel unit or power supply unit The device is installed.

First, cooling of the light source device will be described with reference to the drawings. In FIG. 8, reference numeral 7 denotes a light source lamp cooling exhaust fan for appropriately cooling the high temperature portion of the light source lamp 1 and adjusting the temperature by sucking and ventilating a high temperature atmosphere around the light source lamp 1. Reference numeral 8 denotes a reflecting mirror that reflects irradiation light from the light source lamp 1 in the irradiation direction and positions and holds the light source lamp 1. Reference numeral 9 denotes a light source holding mechanism that locks the reflecting mirror 8 integrated with the light source lamp 1 and holds the reflecting mirror 8 at a predetermined position of the light source lamp 1. The light source holding mechanism 9 can be freely attached to and detached from the light irradiation unit 2, and can be inserted in, for example, the direction of arrow D or detached in the opposite direction. Reference numeral 10 denotes an opening provided in a part of the reflecting mirror 8, which is provided for blowing air onto the surface of the light source lamp 1 for cooling. Reference numeral 11 denotes a cooling fan for the light source lamp 1, which passes through an air passage formed integrally with the light irradiation unit 2 through the opening 10 of the reflecting mirror 8 as shown by an arrow C direction. The cooling of the light source lamp 1 is directly controlled by blowing air into the inside. Therefore, the temperature is adjusted to an optimum value by overall cooling by exhausting the high-temperature atmosphere by the exhaust fan 7 and direct cooling of the light source lamp 1 by 11. 1
Reference numeral 2 denotes a mesh-like scattering prevention member stretched over a wind guide port provided integrally with the light source holding mechanism 9, and is provided in the air intake port 12 of the light source holding mechanism 9. This is to prevent fragments of the light source lamp 1 from jumping out of the set when the light source lamp 1 ruptures.

[0010]

As described above,
Conventional projection display devices use a high-resolution, high-definition light valve device to project image information more clearly, and furthermore, images on the screen can be seen clearly without darkening the viewing room. In order to make the projection screen brighter, higher brightness is being promoted. For this reason, it is common practice to achieve high brightness by applying a high-output light source lamp, and to use a large exhaust fan or directly cool the light source to satisfy cooling performance. The fan was rotating at high speed to satisfy the cooling performance.

However, in the conventional configuration described above, the wind noise of the fan blades, which is referred to as the Nz sound of the exhaust fan 7, is largely radiated to the outside of the set, so that the blowing noise becomes excessive and hinders viewing. was there. Further, since the aperture ratio of the scattering prevention member 12 cannot be made large for the purpose of preventing the scattering of the light source lamp 1, the fan 11 and the exhaust fan 7 may be large or the fan 11 may be rotated at a high speed. A method of satisfying the cooling performance of the light source lamp 1 by using the exhaust fan 7 and the fan 1.
There is a problem that the noise becomes excessively large in combination with the wind noise (Nz sound) of the first blade.

The present invention focuses on such a problem, and can significantly improve the cooling efficiency of a heat source such as a light source lamp, and can suppress the blowing noise radiated to the outside of the apparatus significantly. It is an object to provide a light source device.

[0013]

According to a first aspect of the present invention, there is provided a light source comprising: a light source; and at least one air guide port on a surface of the light source, through which cooling air can be guided. A light source holding mechanism for integrally positioning and holding the light source, and for reflecting the light flux of the light source in the direction of the surface to be illuminated, the reflecting mirror of the light source, and locking and holding the reflecting mirror at a predetermined position of the light source. A light irradiation mechanism capable of incorporating the light source holding mechanism at a desired position or removing the light source holding mechanism in order to guide emitted light of the light source to a surface to be irradiated, and a light source holding mechanism. A light guide opening / closing mechanism that is stopped and is movable to a first position for opening the air guide of the reflector and a second position for closing the air guide of the reflector, and incorporates the light source holding mechanism into the light irradiation mechanism. When the above air opening and closing device To the first position, and when the light source holding mechanism is detached from the light irradiating mechanism, the form switching means of the air guide opening / closing mechanism for moving the air guide opening / closing mechanism to the second position. It is a light source device.

According to the first aspect having such features, the wind noise (Nz sound) generated by the exhaust fan for cooling the heat source such as the light source lamp and the fan for directly cooling the light source lamp is generated. ) Can be kept low,
The light source lamp can be efficiently cooled by the low rotation of the fan.

Further, a second invention of the present application is a light source device,
A light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and a projection lens that receives the light emitted from the light valve and projects the optical image onto a screen, The light source device is a projection display device including the light source device of the first invention of the present application.

According to a third aspect of the present invention, there is provided a light source, at least one power supply means capable of adjusting power supplied to the light source, and at least one air guide port on the surface of the light source capable of guiding cooling air. While positioning and holding the light source integrally,
A reflecting mirror capable of reflecting the light flux of the light source in the direction of the irradiated surface,
A light irradiation mechanism that locks the reflecting mirror and guides the light emitted from the light source onto a surface to be irradiated, and an opening area of a wind guide port of the reflecting mirror according to an amount of power supplied to the light source from the power supply unit. The light source device is provided with an adjusting means for changing the air flow and adjusting the amount of air flow.

According to the third aspect of the present invention having the above features, the amount of air flow to the light source lamp is adjusted in response to the amount of power supplied to the light source lamp. Can be adjusted. Further, the wind noise (Nz) generated by the exhaust fan for cooling the heat source such as the light source lamp unit and the fan for directly cooling the light source lamp is generated.
Sound) can be suppressed to a low level, and the cooling of the light source lamp can be efficiently performed with low rotation of the fan.

A fourth invention of the present application provides a light source device,
A light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and a projection lens that receives the light emitted from the light valve and projects the optical image onto a screen, The light source device is a projection display device including the light source device according to claim 3.

According to a fifth aspect of the present invention, there is provided a light source, an exhaust fan for exhausting heat of the light source serving as a heat source, and an exhaust port formed integrally with the exterior cabinet to exhaust exhaust heat from the exhaust fan. A first light guide provided at an exhaust port of the exterior cabinet, which is capable of substantially shielding unnecessary light amount leaking from the light source to the outside of the exterior cabinet, and formed in an oblique shape with respect to a flow of wind of the exhaust fan. A light blocking member,
A second light-shielding member having a honeycomb-shaped opening shape integrally locked with the first light-shielding member and having an inclination in the same direction as a flow of exhaust air passing through the light-shielding member is provided. It is a light source device.

According to the fifth aspect of the present invention, unnecessary light from the light source lamp can be prevented from leaking to the outside of the set, and the opening ratio of the exhaust air passage can be significantly increased. The ventilation resistance of the fan can be made as small as possible, and the light source lamp can be efficiently cooled. Therefore, even if the exhaust fan does not rotate at high speed, the light source lamp can be efficiently cooled, so that the wind noise (Nz sound) generated from the exhaust fan can be extremely small.

According to a sixth aspect of the present invention, there is provided a light source device, a light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and light emitted from the light valve enters the light valve. A projection lens for projecting the optical image on a screen, wherein the light source device is the projection display device according to claim 5.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a side view of a light source device according to a first embodiment of the present invention, and FIG. 2 is a plan view of a projection display device according to the first embodiment. The projection display device according to the second invention of the present application will also be described. The same components as those of the conventional projection display device described in FIG. 8 will be described using the same reference numerals. In FIG. 1, reference numeral 1 denotes a light source lamp, and reference numeral 2 denotes a light irradiation unit that separates white light from the light source lamp 1 into red, blue, and green, and collects the separated lights. Reference numeral 3 denotes a liquid crystal panel unit for modulating the light condensed by the light irradiation unit 2 in accordance with image information, and a light combining unit 4 for color-combining the modulated light with a light valve composed of the liquid crystal panel unit 3. And form image information. Further, a projection optical unit 5 for enlarging and projecting the light synthesized by the color synthesis unit 4.
To enlarge and project the image on the screen. In addition, the power supply unit 6 includes a power supply unit 6 serving as a driving source for driving the light source lamp 1 and electric devices, and a signal processing circuit (not shown).

In this type of projection display device, self-heating of the light source lamp 1 having a strong light output, a rise in the temperature of the liquid crystal panel unit 3 and the like incident upon the light emitted from the light source lamp 1 and an increase in the internal power supply unit 6 Generally, forcible cooling is required for heat generation of element parts and the like, and each cooling device using a cooling fan or the like is incorporated.

The details of the light source device and the projection type display device of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 11 denotes a fan for directly cooling the surface of the light source lamp 1. In FIG. 2, reference numeral 7 denotes a light source lamp cooling exhaust fan for appropriately cooling and adjusting the temperature of the high temperature portion of the light source lamp 1 by inhaling and ventilating a high temperature atmosphere around the light source lamp 1. Reference numeral 8 denotes a light source that reflects the irradiation light from the light source lamp 1 in the irradiation direction.
Is a reflecting mirror for positioning and holding. 9 is a light source lamp 1
The positioning and locking of the reflecting mirror 8 integrated with the light source lamp 1
Is a light source holding mechanism for holding and fixing at a predetermined position. The light source holding mechanism 9 can be freely attached to and detached from the light irradiation unit 2, for example, can be inserted in the direction of arrow D or can be detached in the opposite direction. Reference numeral 10 denotes an opening provided in a part of the reflecting mirror 8, which is provided in a part of the reflecting mirror 8 to blow air to the surface of the light source lamp 1 and directly cool the light source lamp. Reference numeral 11 denotes a cooling fan for the light source lamp 1, which passes through an air passage formed integrally with the light irradiation unit 2, passes through an opening 10 provided in the reflecting mirror 8, and enters the inside of the reflecting mirror 8. That is, the light source lamp 1 located inside the reflecting mirror 8 is directly cooled and adjusted by blowing air in the direction of arrow C. Therefore, the temperature is adjusted to an optimum temperature by the entire cooling by the exhaust fan 7 in the high-temperature atmosphere and the direct cooling of the light source lamp 1 by the fan 11.

Reference numeral 101 denotes a baffle opening / closing device installed near an air intake 12 formed integrally with the light source holding mechanism 9 and is rotatable in the direction of arrow A or B. Reference numeral 102 denotes a wind guide opening control valve, which is formed integrally with the wind guide opening / closing device 101. That is, when the air guide opening / closing device 101 is rotated in the B direction, the air guide opening control valve 102 is rotated in the B direction, and the above-described air intake port 12 is closed. Conversely, the air guide opening / closing device 10
When the user 1 rotates in the direction of arrow A, the air intake port 12 is opened. Further, the wind guide opening / closing device 101 is provided with a biasing means such as a moment biasing means (not shown) such as a torsion coil spring so as to always rotate in the direction B. Reference numeral 103 denotes a switching lever that is a form switching unit, and is formed integrally with the air guide opening / closing device 101.

Here, the mechanism of cooling the light source lamp 1 will be described. During the operation of shifting to the first mode in which the light source holding mechanism 9 is incorporated at a desired position to guide the light emitted from the light source to the surface to be illuminated, the mode switching means integrated with the air guide opening / closing device 101 is used. A certain switching lever 103
Is the outer wall 13 of the duct portion formed by the light irradiation unit 2.
As a result, the air guide port adjusting valve 102 is rotated counterclockwise, that is, in the direction of arrow A, and also rotates coaxially in the direction of arrow A. That is, in the air inlet 12 formed in the light source holding mechanism 9, the opening is completely secured, and the air can be sent from the fan 11 to the inside of the reflecting mirror 8. Next, when the mode is shifted to the second mode in which the light source holding mechanism 9 is detached from the light irradiation unit 2, the switching lever 103 of the air guide opening / closing device 101 is released from the restriction on the outer wall 13 of the duct portion. Is rotated in the direction of arrow B by the urging means for applying a moment to the
02 completely closes the air intake 10 of the light source holding mechanism 9. That is, in the first embodiment using the light source lamp 1, the opening area of the air guide port is large, the ventilation resistance can be extremely reduced, the amount of air blown from the fan 11 is small, and the light source lamp 1 can be efficiently cooled. In addition, the noise of the fan 11 can be suppressed extremely low. In addition, when the light source is removed, the airflow opening into the reflector can be completely closed, so that the fragments can be completely prevented from being scattered when the light source lamp ruptures, and the safety performance is greatly improved. In the projection display device according to the second invention of the present application, the light source device based on Embodiment 1 is used as the light source device.

(Embodiment 2) FIG. 3 is a side view of a light source device according to a second embodiment of the present invention, and FIG. 4 is a plan view of a projection display device according to the embodiment. The projection display device according to the fourth invention of the present application will also be described. The same components as those of the conventional projection display device described in FIG. 8 will be described using the same reference numerals. The description of the same parts as in the first embodiment is omitted.

The projection type liquid crystal display device generates heat of the light source lamp 1 having a strong light output, raises the temperature of the liquid crystal panel unit 3 and the like incident upon the light from the light source lamp 1, and increases the temperature of the element parts inside the power supply unit 6. Generally, forced cooling is required for heat generation and the like, and cooling devices using a cooling fan or the like are incorporated. Further, in the light source lamp 1, there may be a case in which the same light source device is provided with lamps having different input watts or the same light source lamp is used to vary the input power in order to increase the brightness. This will be described with reference to FIGS. In FIGS. 3 and 4, reference numeral 7 denotes a light source lamp cooling exhaust fan for appropriately cooling and adjusting the temperature of the high temperature portion of the light source lamp 1 by sucking and ventilating a high temperature atmosphere around the light source lamp 1. Reference numeral 8 denotes a reflecting mirror that reflects irradiation light from the light source lamp 1 in the irradiation direction and positions and holds the light source lamp 1. Reference numeral 9 denotes a light source holding mechanism for positioning and locking the reflecting mirror 8 integrated with the light source lamp 1 and holding and fixing the reflecting mirror 8 at a predetermined position of the light source lamp 1. The light source holding mechanism 9 can be freely attached to and detached from the light irradiation unit 2, for example, can be inserted in the direction of arrow D or can be detached in the opposite direction. Reference numeral 10 denotes an opening provided in a part of the reflecting mirror 8, which is provided in a part of the reflecting mirror 8 in order to blow air to the surface of the light source lamp 1 and cool it. Reference numeral 11 denotes a cooling fan for the light source lamp 1, which passes through an air passage formed integrally with the light irradiation unit 2.
By blowing air into the reflecting mirror 8 via the opening 10 of the reflecting mirror 8, that is, in the direction of arrow C, the light source lamp 1 located inside the reflecting mirror 8 is directly cooled and adjusted.
Therefore, the temperature is adjusted to an optimum value by overall cooling by exhausting the high-temperature atmosphere by the exhaust fan 7 and direct cooling of the light source lamp 1 by 11. 201
Is a baffle opening / closing device installed near an air intake 12 formed integrally with the light source holding mechanism 9;
Direction or B direction. 202
Is a wind guide opening control valve, which is formed integrally with the wind guide opening / closing device. That is, the opening area of the air intake port 12 can be adjusted by the rotation position of the air guide port control valve 202. 203 responds to the input power to the light source lamp 1,
This is an adjusting means for automatically adjusting the rotation position of the air guide opening control valve 202, and automatically adjusts a desired air flow amount into the reflecting mirror 8 of the light source lamp 1 according to the input power to the light source lamp 1. Since the light source lamp can be efficiently cooled by the fan 11 without using a large fan, the wind noise Nz of the fan 11 can be suppressed without increasing the size of the apparatus. Further, when the light source holding mechanism 9 is detached from the light irradiation unit 2, by providing the urging means in the direction of arrow B, it is possible to prevent the debris from scattering when the light source lamp 1 ruptures. The adjusting means 203 may be a small motor, for example. In the projection display device according to the fourth invention of the present application, the light source device based on Embodiment 2 is used as the light source device.

(Embodiment 3) FIG. 5 is a plan view of a light source device according to a third embodiment of the present invention, and FIG. 6 is a plan view of a projection display device according to the third embodiment. is there. This will be described below with reference to the drawings. Since the basic configuration is the same as in the first and second embodiments, the same components will be described using the same reference numerals.

The projection type liquid crystal display device generates self-heating of the light source lamp 1 having a strong light output, raises the temperature of the liquid crystal panel unit 3 and the like incident by the light from the light source lamp 1 and the device components inside the power supply unit 6. Generally, forced cooling is required for heat generation and the like, and cooling devices using a cooling fan or the like are incorporated.

In FIG. 5, reference numeral 7 denotes an exhaust fan for cooling the light source lamp 1 for appropriately cooling the high temperature portion of the light source lamp 1 and adjusting the temperature by sucking and ventilating the high temperature atmosphere around the light source lamp 1. Reference numeral 8 denotes a reflecting mirror that reflects irradiation light from the light source lamp 1 in the irradiation direction and positions and holds the light source lamp 1. Here, reference numeral 15 denotes an opening having a shape of an opening for preventing unnecessary light from the light source lamp from leaking out of the light source device and for allowing the exhaust air from the exhaust fan 7 to escape to the outside of the light source device. And is generally called a louver. The first light-blocking member 15 is formed integrally with the housing of the light source device and has an oblique opening shape. Reference numeral 301 denotes a second light shielding member having a honeycomb-like opening shape formed in a regular hexagon and having the same inclination as the opening direction of the first light shielding member 15. That is, the cooling mechanism of the light source lamp is such that air from the exhaust fan 7 for exhausting heat of the light source lamp 1 passes through the second light shielding member, passes through the first light shielding member, and then goes to the outside of the housing. Is to be released.

Here, generally, in order to prevent unnecessary light leakage of the light source lamp 1 to the outside of the housing, the length of the louver of the first light shielding member in the air passage direction is lengthened or reversed. In general, a light-blocking member is added in the direction to form a light-blocking structure, and the exhaust ventilation resistance is extremely large. In the present invention, the member having the honeycomb-shaped opening, which is the second light-shielding member, is formed by the exhaust fan 7 and the first light-shielding member 15.
Since the aperture ratio is set to be large, the aperture ratio can be made very large, but light leakage can be suppressed as much as possible.

In the projection type display device according to the third invention of the present application, the light source device according to the third embodiment is used as the light source device. The liquid crystal panel unit 3 is described as a light valve, but any light valve having a pixel structure and forming an optical image as an optical characteristic can be used for such a projection display device.

[0035]

As described above, according to the first aspect of the present invention, in the first embodiment using the light source lamp, the opening area of the air introduction port is large, the ventilation resistance can be extremely reduced, and the amount of air blown from the fan is reduced. The light source lamp can be cooled small and efficiently, and the noise of the fan can be extremely suppressed. In addition, when the light source lamp is removed, the air vent to the interior of the reflector can be completely closed, so that the debris can be completely prevented from being scattered when the light source lamp ruptures, which has the effect of greatly improving safety performance. Can be Further, the second invention of the present application is a projection display device using the light source device of the first invention of the present application, so that the entire device is not increased in size,
Since the light source lamp can be efficiently cooled and the radiation of noise to the outside of the device can be extremely reduced, an effect that a high-quality projection display device that does not hinder the viewer can be provided can be obtained.

According to the third aspect of the present invention, the turning position of the air guide opening adjusting valve is automatically adjusted in response to the input power to the light source lamp, and the desired air guide amount into the reflecting mirror is automatically adjusted. Since the light source lamp can be adjusted efficiently, the light source lamp can be efficiently cooled by the fan without using a large fan, and the wind noise Nz of the fan can be suppressed. Further, when the light source holding mechanism is detached from the light irradiation unit, it is possible to prevent the fragments from being scattered when the light source lamp ruptures, and to obtain an effect of greatly improving the safety performance.

The fourth invention of the present application is a projection type display device using the light source device of the third invention of the present application.
A high-quality projection display device that does not hinder viewers because it can efficiently cool light source lamps corresponding to all types of input power and extremely reduce noise radiation outside the device without increasing the size of the entire device The effect of being able to provide is obtained.

According to the fifth aspect of the present invention, since the member having the honeycomb-shaped opening is provided between the exhaust fan and the first light-blocking member, the opening ratio of the exhaust ventilation port can be made very large. On the other hand, since light leakage can be suppressed as much as possible, a member having a honeycomb-shaped opening is provided between the exhaust fan and the first light shielding member without increasing the size of the exhaust fan. Is very large,
Light leakage can be suppressed as much as possible, and the effects of extremely low light leakage and extremely low noise of the exhaust fan can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a light source device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the projection display device according to the first embodiment of the present invention.

FIG. 3 is a side view showing a light source device according to a second embodiment of the present invention.

FIG. 4 is a plan view showing a projection display device according to a second embodiment of the present invention.

FIG. 5 is a plan view showing a light source device according to a third embodiment of the present invention.

FIG. 6 is a plan view showing a projection display device according to a third embodiment of the present invention.

FIG. 7 is a side view showing a light source device according to the related art.

FIG. 8 is a plan view showing a conventional projection display device.

[Explanation of symbols]

 Reference Signs List 1 light source lamp 2 light irradiation unit 3 liquid crystal panel unit 4 color synthesizing unit 5 projection optical unit 6 power supply unit 7 exhaust fan 8 reflecting mirror 9 light source holding mechanism 10 opening 11 fan 12 air intake 13 duct outer wall 14 scattering prevention member 15 1 light shielding member 101 wind guide opening / closing device 102 wind guide opening control valve 103 switching lever 201 wind guide opening / closing device 202 wind guide opening valve 203 adjusting means 301 second light blocking member

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/00 360 H04N 5/74 K H04N 5/74 G02F 1/1335 530 F-term (reference) 2H088 EA14 EA15 EA68 HA21 HA28 MA20 2H091 FA41Z LA04 LA30 MA07 5C058 AA06 BA05 BA35 EA00 EA11 EA12 EA52 5G435 AA00 AA12 BB12 BB17 CC12 DD02 DD05 EE02 FF03 GG01 GG02 GG04 GG28 GG44 GG46

Claims (6)

[Claims] 1. A light source, comprising at least one or more air inlets on a surface of the light source through which cooling air can be guided, the light source being integrally positioned and held, and the luminous flux of the light source being directed toward an irradiated surface. A reflecting mirror of the light source that can be reflected to the light source, a light source holding mechanism that locks the reflecting mirror and holds the light source at a predetermined position, and the light source holding mechanism that guides emitted light of the light source to a surface to be irradiated. A light irradiating mechanism capable of incorporating the light source holding mechanism in a desired position or removing the light source holding mechanism, a first position locked by the light source holding mechanism and opening a wind guide port of the reflecting mirror, and a first position of the reflecting mirror. A light guide opening / closing mechanism movable to a second position for closing the wind guide opening, wherein when the light source holding mechanism is incorporated into the light irradiation mechanism, the light guide opening / closing mechanism is moved to the first position to hold the light source. The mechanism is the light irradiator A light source device, comprising: a mode switching unit of the air guide opening / closing mechanism for moving the air guide opening / closing mechanism to a second position when detached from the structure. 2. A light source device, a light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and light emitted from the light valve enters and the optical image is displayed on a screen. A projection display device, comprising: a projection lens for projecting, wherein the light source device is the light source device according to claim 1. 3. A light source, at least one power supply means capable of adjusting power supplied to the light source, and at least one air guide port on a surface of the light source capable of guiding cooling air, the light source being integrally positioned. While holding, a reflecting mirror capable of reflecting the light flux of the light source in the direction of the irradiated surface, a light irradiating mechanism that locks the reflecting mirror, and guides the light emitted from the light source onto the irradiated surface, A light source device, comprising: an adjusting unit that changes an opening area of a wind guide port of the reflecting mirror according to an amount of power supplied to the light source to adjust a wind guide amount. 4. A light source device, a light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and light emitted from the light valve enters and the optical image is displayed on a screen. A projection display device, comprising: a projection lens for projecting, wherein the light source device is the light source device according to claim 3. 5. A light source, an exhaust fan for exhausting heat of the light source serving as a heat source, an exhaust port formed integrally with the exterior cabinet and exhausting exhaust heat from the exhaust fan, and exhausting the exterior cabinet. A first light-blocking member that is provided in the mouth and is capable of substantially blocking the unnecessary amount of light leaking from the light source to the outside of the exterior cabinet, and is formed in a shape oblique to the flow of the wind of the exhaust fan; A light source comprising: a second light shielding member integrally locked with the light shielding member and having a honeycomb-shaped opening shape inclined in the same direction as the flow of exhaust air passing through the light shielding member. apparatus. 6. A light source device, a light valve that receives light emitted from the light source device and forms an optical image as a change in optical characteristics, and light emitted from the light valve enters the light image to display the optical image on a screen. A projection display device, comprising: a projection lens for projecting, wherein the light source device is the light source device according to claim 5.