JPH08114857A - Light source device - Google Patents

Abstract

PURPOSE: To effectively cool a reflection mirror and a light source without enlarging the whole light source device and to perform temp. control by providing plural minute gaps on the light source insertion opening of the reflection mirror rotary symmetrically related to the rotary shaft of the reflection mirror. CONSTITUTION: A light source hold member 400 is attached to the vicinity of the light source insertion opening of the reflection mirror 3 by adhesives 500. At this time, when the light source hold member 400 is attached to the reflection mirror 3, only a part of the light source insertion opening is shielded, and the minute gaps 600 are formed. Then, though an atmosphere in the vicinity of a light emitting tube 2010 becomes a very high temp. by radiation of a metal halide lamp 2, when an axial flow fan 700 is used in the direction of exhaust, the high temp. atmosphere is led outside of the reflection mirror 3 through the minute gaps 600. That is, by such a constitution, the heated atmosphere inside of the reflection mirror 3 is led to the minute gaps 600, and is exhausted backward of the reflection mirror 3. Thus, a flow of a nearly uniform cooling wind is generated regardless of position in the periphery of the light emitting tube 2010 and the inner surface of the reflection mirror 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source device used in an image projection device such as a liquid crystal projector device, and more particularly to a structure of a light source and a reflecting mirror to which the light source is fixed, and a cooling method.

[0002]

2. Description of the Related Art Projection-type display devices such as liquid crystal projector devices are widely used for presentations at companies, classes at schools, information display in public facilities, etc., and not only natural images but also characters, tables or figures. There is an increasing need as a means for enlarging and projecting the image of. Recently, demands for smaller and lighter devices, higher brightness of screens, and higher definition have been strengthened, and accordingly, higher performance has also been required for light source devices.

As a light source used in a liquid crystal projector device or the like, a halogen lamp has been often used.
Halogen lamps have a stable output and are easy to handle because they do not require a lighting circuit, but they have disadvantages such as low light intensity, low luminous efficiency, and short life because they emit light due to the incandescence of the filament. In many cases, it has become difficult to realize the required performance for the light source device as described above.

Therefore, in order to obtain a larger light output,
High-pressure discharge lamps represented by short arc type small metal halide lamps, which have high luminous efficiency, long life, and excellent color rendering properties, have been adopted.

The arc tube of a short arc type small metal halide lamp is usually fixed to a reflecting mirror by an adhesive as shown in FIG. In FIG. 11, 2 is a metal halide lamp, 2010 is its arc tube, 2011 is a discharge electrode, 2012 is molybdenum foil, 2013 is an external lead wire, and 2014 is a base attached to one side of the arc tube 2010. Further, 3 is a reflecting mirror, 301 is a light reflecting surface, and 302 is a cylindrical portion for fixing the lamp. 5
00 is an adhesive that fills the gap between the tubular portion 302 of the reflecting mirror and the arc tube 2010 and fixes them to each other, and 800 is the rotation axis (optical axis) of the reflecting mirror. The arrangement of the lamp and the reflector is generally determined by the positional relationship between the optical axis of the reflector and the discharge electrode of the lamp.
The optical axis arrangement is roughly classified into two types, that is, the optical axis arrangement and the orthogonal arrangement, and FIG. 11 shows the optical axis arrangement having a large light utilization rate. Arc tube 20
In general, 10 is adjusted to an appropriate position with respect to the reflecting mirror 3, and then a gap 500 between the tubular portion 302 and the arc tube 2010 is filled and fixed with an adhesive agent 500.

By the way, in order to increase the illuminance of the projection screen on the screen, the metal halide lamp 2 is used.
It is necessary to reduce the size of the arc tube 2010 of 1. and bring it closer to the point light source. However, if the arc tube size is reduced, the arc tube 201
The wall load of 0 increases and the tube wall temperature rises. For this reason, the reaction between the constituent material of the arc tube 2010 (quartz glass or the like) and the enclosed metal halide is activated, so that the so-called devitrification phenomenon is promoted, and the reduction rate of the screen illuminance may be accelerated.

When the lamp is turned on, the lower side has a low temperature and the upper side has a high temperature due to a convection phenomenon inside the arc tube 2010.
As a result, in the above structure, the same surface is always exposed to a high temperature, and the devitrification phenomenon occurs only in the upper part of the quartz glass forming the arc tube, and a difference in transparency occurs at the top and bottom of the arc tube 2010, which causes a difference in brightness. The lamp life may be shortened. Further, when the temperature is high, not only the electrode 2011 and the metal 2012 forming the connection portion are oxidized and a part of the metal wire is broken, but also the quartz glass portion may be deformed.

Further, in the reflecting mirror 3, not only the dielectric multilayer film deposited on the glass substrate for improving the reflectance of visible light is peeled off due to high heat, but also the glass substrate itself is cracked and damaged. There is a fear.

[0009]

For the above reasons, the light source device such as a light source such as a metal halide lamp and a reflecting mirror has conventionally been provided with a cooling means such as an air circulation fan. However, if it is cooled too much, a sufficient luminous flux of the lamp cannot be obtained, and the emission color is deteriorated due to the change of the spectral characteristic, and further, the transparency of the tube wall is reduced due to the blackening phenomenon due to the sputtering of the enclosed metal. Therefore, it is necessary to appropriately control the temperature of the light source and the reflecting mirror in accordance with their performances and the spatial positional relationship between them.

For example, Japanese Utility Model Laid-Open No. 3-29902 proposes a shape of a reflecting mirror 3 having a notch for ventilation of cooling air as shown in FIG. FIG.
The description of the components having the same reference numerals as 1 will be omitted. In the figure, reference numeral 303 is a cut portion of the reflecting mirror.
In this case, cooling using natural convection does not have enough air volume,
Therefore, when using a cooling means such as an air circulation fan, it must be installed at a position that does not interfere with the illumination outside the optical path, and cooling air is supplied from one of the notches along the inner surface of the reflecting mirror or hot air. However, there is a problem in that it is difficult to uniformly cool the periphery of the discharge lamp because the exhaust gas is exhausted. Furthermore, by making a notch, the uniformity of deposition of the multilayer reflective film on the inner surface of the reflecting mirror is sacrificed, and a large fan is used to secure a sufficient air volume. There is also a problem that the sound generated from the sound becomes noise.

Further, according to Japanese Patent Laid-Open No. 4-127138, an air guide 701 as shown in FIG. 13 (b) is used, and as shown in FIG.
A method of sending cooling air to the inner surface of the arc tube has been proposed. However, like the above-mentioned conventional example, the cooling air is applied from one of the notches provided in the opening of the reflecting mirror, so that the circumference of the arc tube 2010 is uniformly cooled. It is not only difficult to do so, but there is a problem that the entire light source device becomes large.

The present invention has been made in order to solve the above problems, and it is possible to effectively cool the reflecting mirror and the light source and manage the temperature without enlarging the entire light source device. The purpose is to provide a device.

[0013]

In a light source device according to a first aspect of the present invention, a light source held by a light source holding member is inserted into a light source insertion opening of a reflecting mirror, and the light source holding member and the light source are inserted by the light source. It is attached to the reflecting mirror so that a plurality of minute gaps that are rotationally symmetrical with respect to the rotation axis of the reflecting mirror are formed in a part of the opening.

In the light source device according to the second aspect of the present invention, the light source held by the light source holding member is inserted into the light source insertion opening of the reflecting mirror, and the light source holding member and the light source are part of the light source insertion opening. It is attached to a reflecting mirror so as to form at least one substantially C-shaped minute gap.

In the light source device according to the third aspect of the present invention, a rectifying fin is attached to the lower end of the light source holding member.

In the light source device according to a fourth aspect of the present invention, an attitude holding portion is provided on the fixed end side of the light source, and the light source and the plurality of minute gaps formed in the reflecting mirror opening by the attitude holding portion are reflected. The attitude holding unit is attached to the reflecting mirror so as to be rotationally symmetrical with respect to the rotation axis of the mirror.

In the light source device according to claim 5 of the present invention, an attitude holding portion is provided on the fixed end side of the light source, and the light source and the attitude holding portion provide at least one minute C-shaped minute gap in the reflecting mirror opening. The posture holding unit is attached to the reflecting mirror so as to be formed.

In the light source device according to the sixth aspect of the present invention, the rectifying fins are attached to the posture holding portion provided on the fixed end side of the light source.

Further, in the light source device according to the seventh aspect of the present invention, the light source side of the rectifying fin provided in the attitude holding portion of the light source is a light reflecting surface.

Further, in the light source device according to the eighth aspect of the present invention, the light absorber is attached so that the reflector side of the wind guide disposed between the reflector and the air guide is the light absorbing surface. is there.

[0021]

In the light source device according to claim 1 of the present invention,
A plurality of minute gaps formed in the light source insertion opening have the function of ventilation holes, and when the high temperature atmosphere around the light source is forcibly exhausted, a wind that uniformly guides the atmosphere of the light source and the reflecting mirror to the rear of the reflecting mirror. Create a flow.

Further, in the light source device according to the second aspect of the present invention, the substantially C-shaped minute gap formed in the light source insertion opening guides the high temperature atmosphere of the light source and the reflecting mirror to the rear of the reflecting mirror unevenly. Creates a wind flow like this.

Further, in the light source device according to claim 3 of the present invention, the rectifying fins provided in the light source holding portion cause a difference in the strength of the flow between the atmosphere around the light source and the atmosphere near the inner surface of the reflecting mirror. .

Further, in the light source device according to the fourth aspect of the present invention, the minute gap formed in the light source insertion opening acts as a ventilation hole, and when the high temperature atmosphere around the light source is forcibly exhausted, And it creates a wind flow that guides the atmosphere of the reflector to the rear of the reflector.

In the light source device according to the fifth aspect of the present invention, the substantially C-shaped minute gap formed in the light source insertion opening guides the high temperature atmosphere of the light source and the reflecting mirror to the rear of the reflecting mirror in a non-uniform manner. Creates a wind flow like this.

Further, in the light source device according to the sixth aspect of the present invention, the rectifying fins provided in the attitude holding portion of the light source have a difference in intensity of flow between the atmosphere around the light source and the atmosphere near the inner surface of the reflecting mirror. Give rise to.

Further, in the light source device according to the seventh aspect of the present invention, the light emitted from the light source and traveling toward the light source insertion opening is reflected again toward the light source.

Further, in the light source device according to the eighth aspect of the present invention, the leakage light to the rear of the reflecting mirror is absorbed and the light reaching the air guide device is blocked.

[0029]

【Example】

Example 1. 1 is a configuration diagram of a light source device according to a first embodiment of the present invention. In the figure, 2010 to 2014, 3
Since 01 and 800 are the same as the above-mentioned conventional example, the description thereof is omitted. 2 is a light source such as a high pressure discharge lamp,
In this embodiment, a metal halide lamp is used. Three
Is a reflecting mirror having a quadric surface of revolution such as a spherical surface, a parabolic surface, or an elliptic surface, and an elliptic mirror is used in this embodiment. A light source holding member 400 is made of crystallized glass in this embodiment. Reference numeral 500 denotes a fixing material for fixing the light source holding member 400 and the light source 2, or the light source holding member 400 and the reflecting mirror 3 to each other. In this embodiment, a heat resistant inorganic adhesive is used. Reference numeral 600 is a minute gap, and 700 is an air guide device such as an air circulation fan. In this embodiment, an axial fan is used.

Next, the operation of the first embodiment will be described.
In order to obtain high radiant energy, the metal halide lamp 2 encloses a metal halide inside the arc tube 2010,
It is a high-intensity high-pressure discharge lamp that utilizes the atomic and molecular emission. The encapsulation metal is 300 to 300 depending on the spectral response curve of the object.
Indium, iron, gallium, etc. are used in the region of 500 nm, and thallium, a mixture of thallium and sodium, etc. are used in the region of 500 to 600 nm.

During lamp operation, some or all of the metal halide evaporates, and there is a dissociation-bonding equilibrium that depends on the temperature during arc discharge. Most of the metal halide dissociates into metal and halogen atoms at the arc center of about 6000K. And emits light peculiar to metal atoms. Molecular luminescence is emitted from a part with a slightly lower temperature, which is off the center.

The reflecting mirror 3 is important for effectively utilizing the light emitted from the metal halide lamp 2, and the shape is selected by matching with the optical system. The base material of the reflecting mirror 3 is glass, and a dielectric multilayer film is deposited on the reflecting surface 301 to reflect visible light. When the metal halide lamp 2 is mounted in an arrangement having a high light utilization efficiency, which is generally called an optical axis arrangement, as shown in the figure, the light reflecting surface 301
It is necessary to provide a light source insertion opening in the central part of the. Reflector 3
In the vicinity of the light source insertion opening of the
No. 00, the metal halide lamp 2 and the reflecting mirror 3 are adjusted to the relative optimum positions, and then the adhesive 50 is applied to the gap between the metal halide lamp 2 and the light source holding member 400.
0 is filled and fixed.

The light source holding member 400, as shown in FIG.
When it is attached to the reflecting mirror 3, only a part of the light source insertion opening is blocked, and the minute gap 600 is formed. The atmosphere near the arc tube 2010 becomes extremely hot due to the radiation of the metal halide lamp 2, but when the axial flow fan 700 is used in the exhaust direction, the hot atmosphere is guided to the outside of the reflecting mirror 3 through the minute gap 600.

With the above-described structure, the hot air inside the reflecting mirror 3 is guided to the minute gap 600 and exhausted to the rear of the reflecting mirror 3. Therefore, the arc tube 2010
It is possible to generate a substantially uniform flow of the cooling air regardless of the location in the periphery of and the inner surface of the reflecting mirror 3.

In this embodiment, the axial fan 700 is used to guide the high temperature atmosphere inside the reflecting mirror 3 to the rear side of the reflecting mirror 3 for forced cooling, but the high temperature atmosphere is increased by natural convection. It is possible to perform more powerful cooling by using. For example, the cooling effect can be increased and the axial fan 70 can be configured by configuring the entire device so that the rotation axis 800 of the reflecting mirror 3 is substantially vertical.
The burden of 0 can also be reduced.

The arc tube 2 of the metal halide lamp 2
010 is typically made of quartz glass. Due to its physical properties, if the temperature exceeds about 930 ° C, defects in shape and strength will occur, and the progress of devitrification, which deteriorates the transparency of the pipe wall surface, can be accelerated. Will be more likely. On the contrary, it is empirically known that the probability of occurrence of the above-mentioned blackening phenomenon increases when the temperature is lower than about 750 ° C. Therefore, the arc tube 2010 is 800
It is desirable to use in the temperature range of up to 900 degrees. In addition, the reflecting mirror is 400 ° C in consideration of the glass transition temperature.
Although it is desirable to use it below, the dielectric multilayer film deposited on the inner wall surface may peel off at high temperature, and it must be used in an appropriate temperature range according to the film type.

Therefore, a light source device having two minute gaps 600 that are rotationally symmetric with respect to the rotation axis of the reflecting mirror in the light source insertion opening, and two types of axial fans 700 having different rated inputs are prepared, and the arc tube 2010 and the reflecting mirror are prepared. The temperature of the inner wall surface of No. 3 was measured. There are three measurement points, and the arc tube 2010
Indicates that the cooling air flow is good near the minute gap 600 (“arc tube surface 1” in the figure) and that the cooling air flow is bad from the minute gap 600 (“arc tube surface” in the figure). 2 ”) and one point close to the minute gap 600 on the inner wall surface of the reflecting mirror 3 are set. The size of the minute gap 600 is about the same as the area where the light source holding member 400 closes the light source insertion opening to form the minute gap 600.

The metal halide lamp 2 has a lamp power of 2
The arc tube 2010 is made of quartz glass. The reflecting mirror 3 has an outer diameter of about 70 mm and a wall thickness of about 2 m.
It is an ellipsoidal mirror of m, and has a light source insertion opening with a diameter of about 15 mm. Further, the light source holding member 400 is designed so that the two minute gaps 600 are symmetrically arranged. Axial fans with rated inputs of 2.64W and 1.92W are available.
The measurement was performed at room temperature of 25 ° C.

As shown in FIG. 3, the arc tube surface 1 is approximately 875.
℃, arc tube surface 2 is about 925 ℃, the reflective mirror inner wall surface is about 210
It was confirmed that the temperature of each part was in the proper temperature environment. Needless to say, finer temperature control can be easily performed by changing the size and shape of the minute gap 600 and changing the specifications of the axial fan 700.

Example 2. The size and position of the minute gap 600 can be changed depending on the shapes of the light source insertion openings provided in the light source holding member 400 and the reflecting mirror 3 and their relative positions. In the present embodiment, as shown in FIG. 4, a substantially C-shaped minute gap 600 is formed in the light source insertion opening. Therefore, a flow of cooling air can be generated asymmetrically with respect to the rotation axis 800, and an appropriate effect can be obtained when spatial control is required for temperature control of the atmosphere of the arc tube 2010 and the inner wall surface of the reflecting mirror 3. it can. For example, when the metal halide lamp 2 is lit in a substantially horizontal posture, the upper part of the arc tube 2010 becomes hotter than the lower part due to natural convection, but in this case, the atmosphere flow on the upper side of the arc tube is higher than that on the lower side. Appropriate temperature control becomes possible by enlarging the minute gap on the upper side so as to be large.

Example 3. Further, as shown in FIG. 5, an air rectifying fin 401 may be provided at the end of the light source holding member 400 on the arc tube 2010 side. According to this embodiment, the arc tube 2
By positively discharging the atmosphere of 010, the temperature of the metal halide lamp 2 and the reflecting mirror 3 can be selectively adjusted.

Example 4. In the above-mentioned embodiment, the metal halide lamp 2 has the reflecting mirror 3 through the light source holding member 400.
However, the base 2014 may have the function of the light source holding member 400. As shown in FIG. 6, according to the present embodiment, for example, a branch-shaped posture holding unit 2015 is integrally formed on a part of the base 2014, and the posture holding unit 2015 fixes the adhesive 500 to the reflecting mirror 3. However, it goes without saying that the intended purpose can be achieved even with such a configuration.

Example 5. In addition, the posture holding unit 2015 provided on a part of the base 2014 can have any shape. As shown in FIG. 7, in this embodiment, the attitude holding portion 2015 is formed so that at least one substantially C-shaped minute gap 600 is formed, so that the temperature control of the metal halide lamp 2 and the reflecting mirror 3 is spatially performed. It becomes possible to make adjustments.

Example 6. Further, as shown in FIG. 8, a rectifying fin 401 may be provided in a part of the base 2014,
According to this embodiment, the temperature of the metal halide lamp 2 and the reflecting mirror 3 can be selectively adjusted by positively discharging the atmosphere near the inner wall surface of the reflecting mirror 3.

Example 7. In the above embodiment, the rectifying fin 401 has only the function of controlling the flow of the atmosphere of the arc tube 2010 and the reflecting mirror 3, but in the present embodiment, as shown in FIG. A light reflecting surface 402 is provided on the side to reflect the light, which has not been used conventionally, toward the light source insertion opening to the arc tube 2010 again to improve the light utilization efficiency. In the case of the present embodiment, it is desirable that the shape of the light reflecting surface is a similar reduction surface of the elliptical surface of the reflecting mirror 3 cut by the light source insertion opening.

Example 8. Further, as shown in FIG. 10, an air guide body 701 may be installed between the axial fan 700 and the reflecting mirror 3, and according to the present embodiment, the air guide effect of the axial fan 700 is surely exhibited. Not only the air guide 70
The light absorber 702 attached to the side surface of the first mirror 1 can block the leaked light to the rear of the reflecting mirror 3. by this,
Axial fan 70 is generated by the ultraviolet rays that have passed through reflecting mirror 3.
It is possible to provide an effect of suppressing damage to the members constituting 0 or other light source devices arranged in the vicinity of 0.

By the way, in the above description, the present invention is applied to the light source device used for the projection type display device or the like, but it goes without saying that it can be applied to other light source devices.

[0048]

Since the present invention is constructed as described above, it has the following effects.

According to the light source device of the first aspect of the present invention, by providing a plurality of minute gaps in the light source insertion opening of the reflecting mirror in a rotationally symmetrical manner with respect to the rotation axis of the reflecting mirror, the atmosphere inside the arc tube and the reflecting mirror is increased. Can generate a wind flow that guides the light toward the rear of the reflecting mirror, and therefore, the arc tube and the reflecting mirror can be uniformly cooled, and the temperature control of the light source device can be appropriately performed. .

Further, according to the second aspect of the present invention, at least one minute gap provided in the light source insertion opening of the reflecting mirror is provided in a substantially C shape so that the atmosphere inside the arc tube and the reflecting mirror can be controlled. It is possible to generate a wind flow that leads to the rear of the reflecting mirror asymmetrically with respect to the rotation axis of the reflecting mirror. For this reason, it becomes possible to locally adjust the cooling of the arc tube and the reflecting mirror, and the temperature of the light source device can be finely controlled.

According to the light source device of the third aspect of the present invention, the atmosphere near the inner wall surface of the reflecting mirror can be positively discharged by attaching the rectifying fin to a part of the light source holding member. Therefore, the temperature of the arc tube and the reflecting mirror can be selectively adjusted.

Further, according to the light source device of the fourth aspect of the present invention, not only the light source and the reflecting mirror can be directly fixed by providing the light source posture holding portion on a part of the base. , By creating a plurality of minute gaps in the light source insertion opening of the reflecting mirror in a rotationally symmetrical manner with respect to the axis of rotation of the reflecting mirror, to create a wind flow that guides the atmosphere inside the arc tube and the reflecting mirror to the rear of the reflecting mirror. Therefore, the arc tube and the reflecting mirror can be cooled uniformly, and the temperature control of the light source device can be appropriately performed.

Further, according to the fifth aspect of the present invention, at least one minute gap provided in the light source insertion opening of the reflecting mirror is provided in a substantially C shape so that the atmosphere of the arc tube and the reflecting mirror is reflected. It is possible to generate a wind flow that is guided to the rear of the mirror asymmetrically with respect to the rotation axis of the reflecting mirror, which enables local adjustment in cooling of the arc tube and the reflecting mirror, and finely controls the temperature of the light source device. be able to.

According to the light source device of the sixth aspect of the present invention, the atmosphere near the inner wall surface of the reflecting mirror can be positively discharged by attaching the rectifying fin to a part of the attitude holding portion of the base. Therefore, the temperature control of the arc tube and the reflecting mirror can be selectively performed.

Further, according to the seventh aspect of the present invention, the light-reflecting surface is provided on the light source side of the rectifying fin provided in the attitude holding portion of the light source, so that the light is originally lost due to the existence of the opening. Part of the light can be used effectively.

According to the light source device according to the eighth aspect of the present invention, by disposing the air guide between the air guide device and the reflecting mirror, not only the high temperature atmosphere on the inner surface of the reflecting mirror is efficiently guided, but also Due to the action of the light absorber attached to the side surface of the wind guide on the side of the reflecting mirror, it is possible to prevent the unused light from reaching the wind guide device and the rear of the wind guide device, and also the performance deterioration due to the temperature rise of the peripheral members. Can be prevented.

[Brief description of drawings]

FIG. 1 is a configuration diagram illustrating a light source device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the light source device of FIG.

FIG. 3 is a diagram showing an experimental result of temperature distribution in Example 1 of the present invention.

FIG. 4 is a perspective view of a light source device according to a second embodiment of the invention.

FIG. 5 is a configuration diagram showing a light source device according to a third embodiment of the invention.

FIG. 6 is a configuration diagram showing a light source device in Embodiment 4 of the present invention.

FIG. 7 is a perspective view of a light source device according to a fifth embodiment of the invention.

FIG. 8 is a configuration diagram showing a light source device in Embodiment 6 of the present invention.

FIG. 9 is a configuration diagram showing a light source device in embodiment 7 of the present invention.

FIG. 10 is a configuration diagram showing a light source device in Embodiment 8 of the present invention.

FIG. 11 is a configuration diagram showing a conventional light source device.

FIG. 12 is a configuration diagram showing another conventional light source device.

FIG. 13 is a configuration diagram showing still another conventional light source device.

[Explanation of symbols]

301 light reflecting surface, 3 reflecting mirror, 2 metal halide lamp, 400 light source holding member, 500 fixing material, 700
Air guide, 600 minute gaps.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Oueto 1st Baba-Zou, Nagaokakyo-shi Video System Development Laboratory, Mitsubishi Electric Corporation

Claims (8)

[Claims] 1. A light-reflecting surface, a reflecting mirror having an opening in a part thereof, a light source fixed by inserting a part into the opening, and a light source holding member arranged near the opening and holding the light source. In a light source device comprising a reflecting mirror and a light source holding member, a fixing material for fixing the light source holding member and the light source to each other, and a wind guide device for flowing the atmosphere of the reflecting mirror and the light source, the light source and the light source holding member partially have openings. Shielded to
A light source device, wherein a plurality of minute gaps are formed in a part of the opening so as to be rotationally symmetric with respect to the rotation axis of the reflecting mirror. 2. A light reflecting surface, a reflecting mirror having an opening in a part thereof, a light source fixed by inserting a part of the light into the opening, and a light source holding member located near the opening and holding the light source. A light source device comprising a reflecting mirror and a light source holding member, and a fixing material for fixing the light source holding member and the light source to each other, and a wind guide device for flowing the atmosphere of the reflecting mirror and the light source,
A light source device, wherein a light source and a light source holding member partially shield the opening, and at least one substantially C-shaped minute gap is formed in a part of the opening. 3. The light source device according to claim 1, wherein a rectifying fin is attached to the light source holding member. 4. A light reflecting surface and a reflecting mirror having an opening in a part thereof, a light source fixed by inserting a part in the opening, a fixing material fixing the reflecting mirror and the light source to each other, the reflecting mirror and the light source. In a light source device including an air guide device for flowing the atmosphere of, the light source has an attitude holding portion on its fixed end side,
A light source device characterized in that an opening is partially shielded by a light source and a posture holding unit, and a plurality of minute gaps which are rotationally symmetrical with respect to a rotation axis of a reflecting mirror are formed in a part of the opening. 5. A light reflecting surface and a reflecting mirror having an opening in a part thereof, a light source fixed by inserting a part into the opening, a fixing material fixing the reflecting mirror and the light source to each other, the reflecting mirror and the light source. In a light source device including an air guide device for flowing the atmosphere of, the light source has an attitude holding portion on its fixed end side,
A light source device characterized in that an opening is partially shielded by a light source and a posture holding unit, and at least one substantially C-shaped minute gap is formed in a part of the opening. 6. The light source device according to claim 4, wherein a rectifying fin is attached to the attitude holding portion of the light source. 7. The light source device according to claim 3, wherein the light source side of the rectifying fin is a light reflecting surface. 8. A light reflecting surface and a reflecting mirror having an opening in a part thereof, a light source fixed by inserting a part into the opening, a fixing material fixing the reflecting mirror and the light source to each other, a reflecting mirror and a light source. In a light source device including a wind guide device for flowing the atmosphere of, and a wind guide member arranged between the reflecting mirror and the wind guide device and guiding the atmosphere of the reflecting mirror and the light source to the wind guide device, a part of the wind guide member absorbs light. A light source device having a body attached thereto.