JP2002131841A - Light source apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the temperature of lamps from rising to high, extend the life of lamps and improve the reliability of lamps in a light source apparatus with multiple lights. SOLUTION: In the light source apparatus 40 comprising a plurality of lamps 12 e.g. four lamps, which respectively have a light emitting tube 10 and a reflector 11 and are arranged in parallel, the arbitrary number of the lamps 12 e.g. four lamps are provided with light shielding walls 41 between adjacent lamps 12. The light shielding wall 41 prevents the light, which is radiated from the light emitting tube 10 of one lamp 12 and passes through the reflector 11, from entering into another lamp 12. Mutual heating caused by the passing light between adjacent lamps 12 is suppressed, the temperature of the lamps 12 is prevented from rising to high, the life of lamps is extended and the reliability of lamps is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal projector or a DMD (Digital Mirror Device).
e) A light source device used for a projector or the like.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional light source device, for example, a light source device of a liquid crystal projector, projects a luminous tube 10 and divergent light from the luminous tube 10 to project light parallel to the optical axis. It was constituted by a lamp 12 having a reflector 11 for emitting light to the target side. The arc tube 10 was constituted by an ultra-high pressure mercury lamp or a metal halide lamp. After the light emitted from the lamp 12 passes through the condenser lens 13, the dichroic mirrors 14 and 1 serving as color separation elements are used.
At 5, the light is decomposed into B (blue), G (green), and R (red) light. After disassembly, the B light is reflected by the reflection mirror 16 and guided to the B liquid crystal panel 18 through the condenser lens 17, and the G and R lights are transmitted through the condenser lenses 19 and 20 to the G and R liquid crystal panels 21 and 22. B, G light modulated by the liquid crystal panels 18 and 21 and the reflection mirror 2 modulated by the liquid crystal panel 22
The dichroic mirrors 24 and 25 are combined with the R light guided in Step 3.
And the combined light is projected by a projection lens 26 on a screen (not shown).

In the conventional example shown in FIG. 8, since the light source is constituted by one lamp 12, in order to increase the brightness of the projected image, the amount of luminous flux by increasing the power (for example, 400 W or more) is required. Although techniques such as increasing the amount of condensed light by increasing the diameter of the reflector (for example, a diameter of 100 mm or more) and increasing the light use efficiency by shortening the gap length of the lamp have been used, there have been the following problems. . The problem of high power consumption is that the size of the lamp increases, the size of the lamp power supply increases, and the amount of heat generated increases the size of the cooling mechanism, and the increase in the diameter of the reflector causes the size of the device to increase. However, there is a problem that it is difficult to reduce the gap length of the lamp, and there is a problem that it is not possible to easily increase the brightness of the projected image.

In order to solve the above-mentioned problems, there has been proposed a light source device in which a light source is composed of a large number of lamps.
This multi-lamp type light source device has conventionally been configured as shown in FIGS. 9 (a) and 9 (b). That is, four lamps 12 each composed of an arc tube 10 and a reflector 11,
0 to form a light source 31 in parallel with the light source 31.
Is emitted to a projection target (for example, liquid crystal panels 18, 21, and 22 for B, G, and R) to obtain a projection image. 9A and 9B, reference numeral 32 denotes a lamp house 3.
A fixed frame for fixing the four lamps 12 to 12 within 0 is shown. Further, for simplification of the illustration, the reflectors 11 to 1
1 is omitted (the same applies hereinafter).

[0005]

However, FIG.
In the light source (i.e., the light source device) 31 of (a) and (b), there is no problem as described above, but the heat transmitted through the reflectors 11 and the reflectors 11 and The lamps 12 and 12 are mutually heated by light transmitted through the lamp 11 and the like, and the temperature of the lamps 12 to 12 becomes too high, and the lamps 12 to 1
2 has a problem that the life is shortened and the reliability is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in a multi-lamp type light source device, a light source capable of preventing the lamp from becoming hot, extending the life of the lamp, and improving reliability. It is intended to provide a device.

[0007]

According to the first aspect of the present invention, a plurality of lamps each having an arc tube and a reflector are arranged in parallel, and the reflector of each lamp reflects divergent light from the arc tube to make the light axis parallel. In a light source device that emits light, between any adjacent lamps of a plurality of lamps, light diverging from the arc tube of one of the adjacent lamps and passing through the reflector enters the other lamp. A light-shielding wall is provided to block the light.

In such a configuration, the light emitted from the arc tube of one of the adjacent lamps and transmitted through the reflector is blocked from entering the other lamp by the light shielding wall. It is possible to suppress mutual heating due to transmitted light between the lamps and prevent the lamp from becoming hot. Therefore, the life of the lamp can be prolonged, and the reliability can be improved.

According to a second aspect of the present invention, in order to reduce the size of the light-shielding wall and reduce the cost, the light-shielding wall is diverged from the arc tube of one of the adjacent lamps. Then, of the light transmitted through the reflector, the light is transmitted to the arc tube of the other lamp so as to be blocked.

According to a third aspect of the present invention, in the first aspect of the invention, the light-shielding wall is provided with one of the adjacent lamps in order to suppress the temperature rise of the light-shielding wall itself and improve the cooling efficiency of the lamp. Of the light diverged from the tube and transmitted through the reflector, the light is formed by a reflection mirror that reflects the transmitted light toward the other lamp, and a radiator that receives the light reflected by the reflection mirror and radiates the light is provided.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the light-shielding wall is provided with one of the adjacent lamps to reduce the temperature rise of the light-shielding wall itself and improve the cooling efficiency of the lamp. Of the light diverged from the tube and transmitted through the reflector, the light is formed by a reflecting mirror that reflects the transmitted light toward the light emitting tube of the other lamp, and a radiator that receives the reflected light from the reflecting mirror and radiates the heat is provided.

According to a fifth aspect of the present invention, in the third or fourth aspect, the reflecting mirror is fixed to the plate-shaped light shielding wall main body and the surface of the light shielding wall main body in order to simplify the configuration of the reflection mirror. And the reflection film formed.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the light shielding wall is provided with one of the adjacent lamps in order to reduce the space for providing the light shielding wall and to improve the cooling efficiency of the lamp. Of the light diverging from the arc tube and passing through the reflector, the transmitted light directed to the other lamp is formed by a saw-tooth-shaped reflecting mirror that reflects on a plurality of reflecting surfaces, and the reflected light from the saw-toothed reflecting mirror is received. Provide a heat radiator to radiate heat.

According to a seventh aspect of the present invention, in the second aspect of the present invention, in order to reduce the space for providing the light shielding wall and to improve the cooling efficiency of the lamp, the light shielding wall is provided with one of the adjacent lamps. Of the light diverging from the arc tube and passing through the reflector, the transmitted light toward the arc tube of the other lamp is formed by a saw-tooth reflection mirror that reflects on a plurality of reflection surfaces, and the reflection from the saw-tooth reflection mirror A radiator for receiving and radiating light is provided.

According to an eighth aspect of the present invention, in order to simplify the structure of the serrated reflecting mirror, the serrated reflecting mirror is replaced with a serrated light shielding wall main body and the light shielding wall main body. And a reflective film fixed on the surface of the substrate.

According to a ninth aspect of the present invention, in order to further improve the cooling efficiency of the lamp, the light shielding wall is diverged from the arc tube of one of the adjacent lamps and transmitted through the reflector. Of the light, the light transmitted to the other lamp is formed by a light guide that receives light at one end face and emits light from the other end face, and receives light emitted from the light guide at an emission side of the light guide. Provide a radiator that radiates heat.

According to a tenth aspect of the present invention, in the second aspect of the invention, in order to further improve the cooling efficiency of the lamp, the light shielding wall diverges from the arc tube of one of the adjacent lamps and passes through the reflector. Of the light, the light transmitted to the arc tube of the other lamp is formed by a light guide that receives light at one end face and emits light from the other end face, and the light emitted from the light guide is provided on the emission side of the light guide. A radiator that receives and radiates heat is provided.

According to an eleventh aspect of the present invention, in the first or the second aspect of the present invention, in order to enable cooling of the lamp by cooling air, a light-shielding wall is provided along a plurality of light-shielding plates along an optical axis direction of the light emitted from the lamp. And a louver-shaped light shielding wall whose plate surface is arranged obliquely to the optical axis direction of the light emitted from the lamp.

According to a twelfth aspect of the present invention, in order to suppress the temperature rise of the plurality of light-shielding plates themselves and improve the cooling efficiency of the lamp, the surface of each of the plurality of light-shielding plates is adjacent to each other. A reflector that reflects the light transmitted through the reflector out of the arc tube of one of the lamps and transmitted through the reflector is fixed, and the light reflected by the reflector is received and released. Provide body.

According to a thirteenth aspect of the present invention, in the first or second aspect of the invention, the light shielding wall is formed of a heat conductor having a high thermal conductivity in order to increase the heat radiation efficiency of the light shielding wall and improve the cooling efficiency of the lamp. I do. Here, the heat conductor having a high thermal conductivity refers to a conductor or an insulator having a high thermal conductivity. The same applies hereinafter.

According to a fourteenth aspect of the present invention, in order to improve the cooling efficiency of the lamp by increasing the heat radiation efficiency of the light shielding wall main body, the light shielding wall main body is made of a heat conductor having a high thermal conductivity. Formed.

The invention of claim 15 is the invention of claim 11 or 12
In the invention, in order to increase the heat radiation efficiency of the plurality of light shielding plates and improve the cooling efficiency of the lamp, the plurality of light shielding plates are formed of a heat conductor having a high thermal conductivity.

According to a sixteenth aspect of the present invention, in order to improve the cooling efficiency of the lamp by increasing the heat radiation efficiency in the light shielding wall and prevent the discharge from the electrode of the arc tube, The light-shielding wall is formed of a conductor having high thermal conductivity and an insulating film fixed to the surface of the conductor.

According to a seventeenth aspect, in the eleventh aspect, the radiation efficiency of the plurality of light shielding plates is increased to improve the cooling efficiency of the lamp, and to prevent discharge from the electrode of the arc tube. The plurality of light-shielding plates are formed of a conductor having high thermal conductivity and an insulating film fixed to a surface of the conductor.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a light source device according to the present invention. In FIG. 1, the same portions as those in FIG. 9 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 (a)
In (b), 40 is a light source device according to the present invention (hereinafter, referred to as a light source device).
It is simply called a light source. ), The light source 40 is connected to four lamps 12 to 12 arranged in parallel in the lamp house 30 via a fixed frame 32, and a light source 40 for blocking heat transfer such as light irradiation and heat conduction between the lamps. A light-shielding wall 41 that partitions the individual lamps 12 to 12 vertically and horizontally and a holding member 42 that holds the light-shielding wall 41 are provided.

The light-shielding wall 41 includes a light-shielding wall main body 41a formed of a conductor having a high thermal conductivity (for example, a metal plate), and an insulating film 41b fixed on the entire surface of the light-shielding wall main body 41a by vapor deposition or the like. It is formed with. The light shielding wall main body 41a
Is formed by integrally connecting one side of four rectangular plates arranged so as to partition the four lamps 12 to 12 up, down, left and right, and to emit light of the lamp 12 (hereinafter referred to as lamp emission light). The cross section perpendicular to the axial direction is formed in a cross shape. The light shielding wall 41 is formed such that a length La of the light emitted from the lamp along the optical axis direction is longer than a length Lb of the light emitting portion of the light emitting tube 10 of the lamp 12 along the optical axis direction.

The light-shielding wall 41 has a cross-shaped end face on one side abutted or fixed to the inner side face of the fixed frame 32, and a cross-shaped end face on the other side is locked or fixed to the holding member 42. Is held at a predetermined position. The holding member 42 is formed, for example, in a shape in which an elongated plate has a cross-girder shape, and a contact surface on the front side is locked or fixed to a cross-shaped end surface on the other side of the light shielding wall 41 to fix the light shielding wall 41. While being held, the outer peripheral edge is locked or fixed to the inner wall surface of the lamp house 30.

Next, the operation of FIG. 1 will be described. (1) In FIG. 1, the four lamps 12 to 12 reflect the divergent light from the corresponding arc tubes 10 to 10 and emit light parallel to the optical axis. This lamp emission light is emitted toward the projection target (for example, the liquid crystal panels 18, 21, and 22 for B, G, and R), whereby a projection image is displayed.

(2) In each of the four lamps 12 to 12, part of the divergent light from the arc tube 10 passes through the reflector 11, and this transmitted light enters the adjacent lamp 12 by the light shielding wall 41. You are blocked from doing it. For this reason,
It is possible to prevent the temperature of the lamp 12 from becoming high due to the light transmitted through the reflector 11 of the adjacent lamp 12,
The life of the lamps 12 to 12 can be extended, and the reliability can be improved. On the other hand, in the conventional example of FIG. 9, since the lamp 12 becomes high temperature due to the light transmitted through the reflector 11 of the adjacent lamp 12 without the light shielding wall 41, it is difficult to extend the life of the lamp and improve the reliability. Difficult.

(3) The light-shielding wall 41 includes a light-shielding wall main body 41a formed of a conductor having a high thermal conductivity and the light-shielding wall main body 4a.
Since the light-shielding wall body 41a is composed of the insulating film 41b fixed on the entire surface of the light-shielding wall body 41a by vapor deposition or the like, it is possible to increase the heat radiation efficiency of the light-shielding wall body 41a itself and prevent the light-shielding wall body 41a from becoming hot due to transmitted light. it can. For this reason, the cooling efficiency of the lamp 12 can be increased, and the discharge from the electrode of the arc tube 10 to the light shielding wall 41 can be prevented by the insulating film 41b.

FIG. 2 shows a second embodiment of the light source device according to the present invention, and the same parts as those in FIG.
2A and 2B, reference numeral 40A denotes a light source. The light source 40A includes four lamps 12 to 12, a light shielding wall 41A, and a holding member 42. The difference from the example of FIG. It is a structure of.

That is, the light-shielding wall 41A is, for each of the four adjacent lamps 12 of the four lamps 12 to 12, the other of the light diverging from the arc tube 10 of one of the lamps 12 and passing through the reflector 11. The lamp 12 has a shape that blocks transmitted light directed toward the light emitting portion of the light emitting tube 10. Specifically, the light-shielding wall 41A includes a light-shielding wall main body 41Aa formed of a conductor having a high thermal conductivity, and an insulating film 4 fixed to the entire surface of the light-shielding wall main body 41Aa by vapor deposition or the like.
1Ab. The light shielding wall main body 41Aa
One side of four rectangular plates arranged so as to partition the four lamps 12 to 12 up, down, left, and right are integrally joined, and a cross section perpendicular to the optical axis direction of the light emitted from the lamps has a cross shape. It is formed as follows. The light shielding wall 41A has a length Lc along the optical axis direction of the light emitted from the lamp substantially equal to the length Lb along the optical axis direction of the light emitting portion of the light emitting tube 10 of the lamp 12 (Lc ≒ Lb). It is formed slightly longer.

2 (a) and 2 (b), in each of the four lamps 12 to 12, a part of the divergent light from the arc tube 10 passes through the reflector 11, but this transmitted light is transmitted to the light shielding wall. Arc tube 1 of lamp 12 adjacent by 41A
0 is blocked from entering the light emitting section. For this reason, it is possible to prevent the temperature of the arc tube 10 of the other lamp 12 from becoming high due to the light transmitted through the reflector 11 of one of the adjacent lamps 12, 12.
And the reliability can be improved.
At this time, the size of the light shielding wall 41A can be made smaller than the light shielding wall 41 of FIG. 1 (for example, Lc ≒ La / 2), so that the price of the light shielding wall can be reduced, and the price of the light source device can be reduced.

A light-shielding wall 41A is formed of a conductor having high thermal conductivity, and a light-shielding wall main body 41Aa, and an insulating film 41A fixed on the entire surface of the light-shielding wall main body 41Aa by vapor deposition or the like.
b, so as in the case of FIG.
It is possible to prevent the light-shielding wall main body 41Aa from being heated to a high temperature by the transmitted light, thereby increasing the cooling efficiency of the lamps 12 to 12, and to prevent discharge from the electrodes of the arc tubes 10 to the light-shielding wall 41A by the insulating film 41Ab. Can be prevented. At this time,
Since the size of the light shielding wall 41A is smaller than that of the light shielding wall 41 in FIG.
However, since the transmitted light toward the arc tube 10, which is at the highest temperature, is shielded as in the case of FIG. 1, it has a high temperature prevention effect similar to that of FIG.

In the embodiment shown in FIGS. 1 and 2, the thermal conductivity of the light-shielding wall itself is improved to prevent the temperature of the lamp from rising, and also to prevent discharge from the electrode of the arc tube to the light-shielding wall. For this purpose, the light-shielding walls 41, 41A are formed of a conductor having high thermal conductivity, and the insulating film 4 fixed to the entire surface of the light-shielding wall bodies 41a, 41Aa.
1b and 41Ab have been described.
The present invention is not limited to this, and the insulating films 41b, 41A
b is omitted, the light-shielding wall is formed only by the light-shielding wall main bodies 41a, 41Aa formed of a conductor having high thermal conductivity,
It can also be used when the light shielding wall is formed of an insulator having a high thermal conductivity (for example, a silicon substrate). When the light-shielding wall is formed of an insulator having a high thermal conductivity, the temperature of the light-shielding wall itself can be prevented from increasing as in the embodiment of FIGS. Discharge to the battery can be prevented. In the present invention, the above-described conductor or insulator having high thermal conductivity is referred to as a heat conductor having high thermal conductivity. The same applies hereinafter.

FIG. 3 shows a third embodiment of the light source device according to the present invention, and the same parts as those in FIG.
3A and 3B, reference numeral 40B denotes a light source. The light source 40B includes four lamps 12 to 12, a light shielding wall 41B, a holding member 42, and a radiator 45, and is different from the example of FIG. Is the configuration of the light shielding wall and the presence or absence of the heat radiator.

That is, the light-shielding wall 41B is, for each of the four lamps 12 to 12 adjacent to the lamps 12, 12, the other of the light diverging from the arc tube 10 of one of the lamps 12 and passing through the reflector 11. Is formed by a reflection mirror that reflects the transmitted light directed toward the lamp 12. The reflected light of the reflection mirror blocks the transmitted light from entering the other lamp 12. Further, the radiator 45 receives reflected light from the light shielding wall 41B and radiates heat. The heat radiator 45 may be configured to be shared by a part of the lamp house 30.

Specifically, the light shielding wall 41B is formed of a heat conductor (for example, a conductor or an insulator) having a high thermal conductivity, and the light shielding wall main body 41Ba and the entire surface of the light shielding wall main body 41Ba are formed by vapor deposition or the like. It is formed by the fixed reflection film 41Bb. The light-shielding wall main body 41Ba is formed by integrally connecting one side of four rectangular plates whose plate surfaces are obliquely arranged with respect to the optical axis direction of the light emitted from the lamp via a connecting body (not shown). The plate portion is arranged so as to partition the four lamps 12 to 12 up, down, left and right, and is formed such that a cross section perpendicular to the optical axis direction of the light emitted from the lamps has a cross shape. The light shielding wall 41
B is the length Ld of a component parallel to the optical axis direction of the light emitted from the lamp.
Are formed substantially equal to the length Lb of the light emitting portion of the arc tube 10 of the lamp 12 (Ld ≒ Lb) or slightly longer than Lb. In other words, the length Ld is formed equal to the length Lc in FIG. 2 (Ld = Lc).

Next, the operation of FIG. 3 will be described. (1) In FIG. 3A, the light diverging from the arc tubes 10, 10 of the upper lamps 12, 12 of the four lamps 12 to 12, and transmitted through the lower side of the reflectors 11, 11 is:
As shown in FIG. 4B, the light is reflected by the upper reflecting surface of the rectangular plate portion along the horizontal direction of the light shielding wall 41B, enters the heat radiator 45, and the heat energy received by the heat radiator 45 is radiated. . Further, the arc tubes 10 and 10 of the lower lamps 12 and 12 are arranged.
As shown in FIG. 3 (b), the light diverging from the upper side of the reflectors 11 and 11 is reflected by the lower reflecting surface of the rectangular plate portion along the horizontal direction of the light-shielding wall 41B, and the lower lamp Return to 12, 12.

(2) In FIG. 3A, the arc tube 1 of the left lamps 12, 12 of the four lamps 12 to 12 is shown.
Light that diverges from 0 and 10 and passes through the right side of the reflectors 11 and 11 is reflected by the left reflecting surface of the rectangular plate portion along the vertical direction of the light shielding wall 41B and enters the heat radiator 45 (not shown). The heat energy received by the heat radiator 45 is radiated. In addition, the arc tube 1 of the right lamps 12, 12
Light diverging from 0 and 10 and passing through the left side of the reflectors 11 and 11 is reflected by the right reflecting surface of the rectangular plate along the vertical direction of the light shielding wall 41B, and returns to the right lamps 12 and 12.

(3) As described above, since the mutual heating by the transmitted light between the four lamps 12 to 12 adjacent vertically and horizontally is blocked by the light shielding wall 41B, the lamps 12 to 12 become hot. Can be prevented. In addition, since a part of the transmitted light is reflected and is incident on the radiator 45 to radiate heat,
The cooling of the lamps 12 to 12 can be performed more efficiently. Therefore, the life of the lamps 12 to 12 can be prolonged, and the reliability can be improved.

In the embodiment shown in FIG. 3, the light shielding wall main body 41B
The rectangular plate portion is disposed obliquely to the optical axis direction of the light emitted from the lamp so that the plate surface of the rectangular plate portion along the horizontal direction of FIG. The rectangular plate portion reflects the transmitted light from the upper lamps 12 and 12 toward the lower lamps 12 and 12 and causes the light to enter the radiator 45.
Although the case has been described where the transmitted light from the lower lamps 12 and 12 to the upper lamps 12 and 12 is reflected and returned to the lower lamps 12 and 12, the present invention is not limited to this, and the light-shielding wall is not limited thereto. The present invention is also applicable to the case where the rectangular plate portion along the horizontal direction of the main body 41Ba is arranged obliquely with respect to the optical axis direction of the light emitted from the lamp such that the surface of the rectangular plate portion rises to the right in the drawing of FIG. Can be. In this case, the rectangular plate portion of the light shielding wall 41B along the horizontal direction is the lower lamp 1
The transmitted light from 2, 12 to the upper stage 12, 12 is reflected and made incident on the radiator, and the transmitted light from the upper 12, 12 to the lower lamp 12, 12 is reflected to the upper stage 12, 12. Will be back. The same applies to the oblique arrangement direction of the plate surface of the rectangular plate portion along the vertical direction of the light shielding wall main body 41Ba with respect to the optical axis direction of the light emitted from the lamp.

FIG. 4 shows a fourth embodiment of the light source device according to the present invention, and the same parts as those in FIG.
In FIG. 4, reference numeral 40C denotes a light source.
Each of the lamps 12 to 12, a light shielding wall 41C, a holding member (not shown), and a heat radiator (not shown) are different from the example of FIG. 2 in the configuration of the light shielding wall and the presence or absence of a heat radiator.

That is, the light-shielding wall 41C is, for each of the four lamps 12 to 12 adjacent to the lamps 12, 12, the other of the light diverged from the arc tube 10 of one of the lamps 12 and transmitted through the reflector 11. Is formed by a saw-tooth-shaped reflection mirror that reflects the transmitted light toward the lamp 12 of the other, and is prevented from being incident on the other lamp 12 by the reflection of the saw-tooth reflection mirror. The heat radiator is a light shielding wall 41C.
Receives reflected light from and dissipates heat.

More specifically, the light shielding wall 41C is formed of a heat conductor having a high thermal conductivity and has a sawtooth light shielding wall main body 41Ca.
And a reflection film 41Cb fixed to both surfaces of the light shielding wall main body 41Ca by vapor deposition or the like. The light-shielding wall main body 41Ca is formed by integrally joining one side of four rectangular plates having both surfaces formed in a sawtooth shape, so that each rectangular plate has four lamps 1.
2 to 12 are arranged so as to partition vertically and horizontally, and the cross section perpendicular to the optical axis direction of the light emitted from the lamp is formed in a cross shape. In FIG. 4, for simplicity of illustration, the illustration of a rectangular plate portion along the vertical direction of the light shielding wall main body 41Ca and the reflection films 41Cb fixed to both surfaces thereof are omitted. The light shielding wall 41C has a length Lb of the light emitting portion of the light emitting tube 10 of the lamp 12 that is equal to the length Le of the light emitted from the lamp in the optical axis direction.
(Le ≒ Lb) or slightly longer than Lb.

Next, the operation of FIG. 4 will be described. (1) In FIG. 4, light emitted from the arc tubes 10, 10 of the upper lamps 12, 12 of the four lamps 12 to 12, and transmitted through the lower side of the reflectors 11, 11 is shown in FIG. As described above, the light is reflected by the upper reflecting surface of the rectangular plate portion along the horizontal direction of the light shielding wall 41C, enters the radiator, and the heat energy received by the radiator is radiated. Further, light diverging from the arc tubes 10, 10 of the lower lamps 12, 12 and transmitting through the upper side of the reflectors 11, 11 is, as shown in FIG. 4, formed by a rectangular plate portion along the horizontal direction of the light shielding wall 41C. The light reflected by the lower reflecting surface is incident on the radiator, and the heat energy received by the radiator is radiated.

(2) The arc tube 1 of the left and right lamps 12, 12 and 12, 12 of the four lamps 12 to 12
Diverging from 0, 10 and 10, 10 and the reflectors 11, 1
Similarly to the case (1), the lights transmitted through the right and left sides of the light-receiving walls 1, 11, and 11 are also reflected by the left and right reflection surfaces of the vertical rectangular plate portion of the light shielding wall 41 </ b> C and incident on the radiator. And
The heat radiator radiates the received thermal energy.

(3) As described above, since the mutual heating by the transmitted light between the four lamps 12 to 12 adjacent vertically and horizontally is blocked by the light shielding wall 41C, the temperatures of the lamps 12 to 12 become high. Can be prevented. Further, since a part of the transmitted light is reflected by the reflection film 41Cb and is incident on the radiator to be radiated, the heating of the light shielding wall 41C itself due to the transmitted light is suppressed and the lamps 12 to 12 are efficiently cooled. Can be. Therefore, the life of the lamps 12 to 12 can be prolonged, and the reliability can be improved. Furthermore, the light shielding wall 41C
Since the sawtooth-shaped reflecting surfaces are formed on both surfaces of the light-shielding wall 41C, the size of the light-shielding wall 41C can be made smaller than that of the light-shielding wall 41B in FIG. 3, and the installation space of the light-shielding wall 41C can be reduced.

In the embodiment shown in FIGS. 3 and 4, in order to reduce the size of the light shielding walls 41B and 41C and to reduce the cost, the length Ld of the light emitted from the lamp along the optical axis direction is reduced. L
Although the case where e is formed to be equal to or slightly longer than the length Lb of the arc tube 10 of the lamp 12 has been described, the present invention is not limited to this. The lengths Ld and Le along the line are set to La as in the example of FIG. 1, and can be used in a case where more incident light is blocked.

In the embodiment shown in FIGS. 3 and 4, in order to simplify the structure of the light shielding walls 41B and 41C, the light shielding walls 4B and 41C are provided.
Although the case where 1B and 41C are formed by the light shielding wall main bodies 41Ba and 41Ca and the reflection films 41Bb and 41Cb fixed to the surfaces of the light shielding wall main bodies 41Ba and 41Ca has been described, the present invention is not limited to this. , Light shielding wall 41B
Is formed by the plate-like reflection mirror itself, or the light shielding wall 4
The present invention can also be applied to a case where 1C is formed by a double-sided sawtooth reflection mirror itself.

FIG. 5 shows a fifth embodiment of the light source device according to the present invention, and the same parts as those in FIG.
In FIG. 5, reference numeral 40D denotes a light source.
Each of the lamps 12 to 12, the light shielding wall 41 </ b> D, and the heat radiator 46 are provided, and the heat radiator 46 also serves as a holding member.
What differs from the example of FIG. 1 is the configuration of the light shielding wall and the holding member and the presence or absence of a heat radiator.

That is, the light-shielding wall 41D is provided for each of the four lamps 12 to 12 adjacent to the lamps 12 to 12 out of the light emitted from the arc tube of one of the lamps 12 and transmitted through the reflector 11. Light transmitted toward the lamp 12 is formed by a light guide that receives light at one end face and emits light from the other end face.
From the other lamp 12 is blocked. Further, the radiator 46 receives light emitted from the other end face of the light shielding wall 41D and radiates heat. The heat radiator 46 may be configured to be shared by a part of the lamp house 30.

More specifically, the light-shielding wall 41D is formed such that one side of the four rectangular thick plates is integrally connected so that a cross section perpendicular to the optical axis direction of the light emitted from the lamp has a cross shape. The first light guide 51 is formed of a first light guide 51 and a second light guide 52 integrally extended in a tapered shape on the front side of each rectangular thick plate portion of the first light guide 51. Each rectangular thick plate portion of the first light guide 51 and each tapered portion of the second light guide 52 are arranged so as to partition the four lamps 12 to 12 up, down, left and right.

The lamps 12, 1 of the second light guide 52.
2, 12, 12 side end surfaces S1, S1, S1, S
1 is formed so as to contact the outer peripheral edge of the reflectors 11, 11, 11, 11 of the lamps 12, 12, 12, 12, or to face each other with a slight gap. The cross-shaped end surface S2 on the back side of the first light guide 51 is fixed to a substantially cross-shaped heat radiator 46. The four outer peripheral edges of the radiator 46 are locked or fixed to the inner wall of the lamp house 30.

The first and second light guides 51 and 52 are formed of an optical material having a predetermined refractive index into a predetermined shape, so that the arc tubes 1 of the lamps 12, 12, 12 and 12 are formed.
The adjacent lamp 1 of the divergent light from the light beams 0, 10, 10 and 10 passing through the reflectors 11, 11, 11, 11
The light traveling toward the 2, 12, 12, 12 side is transmitted to one side end surface S.
1, S1, S1, and S1 are received, and the received light is totally reflected at a boundary surface with outside air (air) and emitted from the other end surface S2.

Next, the operation of FIG. 5 will be described. (1) In FIG. 5, the light diverging from the arc tubes 10, 10 of the upper lamps 12, 12 of the four lamps 12 to 12 and transmitted through the lower side of the reflectors 11, 11 is shown in FIG. As described above, the side end surface S of the second light guide 52 of the light shielding wall 41D
1. Light is received at the facing portion of S1. These side end surfaces S1, S
The light received at 1 is transmitted through the second and first light guides 52 and 51 and totally reflected at the boundary surface with the outside air, guided to the end face S2, and emitted to the radiator 46. The radiator 46 radiates the received thermal energy. Also, the lower lamps 12, 1
The reflectors 11 and 1 diverge from the two arc tubes 10 and 10
1 is also transmitted to the second light guide 52 in the same manner as described above.
The first light guide 5 is received at a portion facing the side end surfaces S1 and S1 of the first light guide 5.
The heat is guided to the end surface S2 of the first heat sink and emitted to the heat radiator 46 to be radiated.

(2) Of the four lamps 12 to 12, the left and right lamps 12, 12, and 12, the arc tube 1 of the lamp 12
Diverging from 0, 10 and 10, 10 and the reflectors 11, 1
Light transmitted through the right and left sides of the light guides 1, 11, 11 is also applied to the side end surfaces S 1, S 2
The first light guide 51 is received at a portion facing S1, S1, and S1.
And is emitted to the heat radiator 46 to be radiated.

(3) As described above, since the mutual heating by the transmitted light between the four lamps 12 to 12 adjacent vertically and horizontally is blocked by the light shielding wall 41D, the lamps 12 to 12 become hot. Can be prevented. In addition, since the transmitted light is guided to the radiator 46 by the second and first light guides 52 and 51 to radiate heat, the lamps 12 to 12 can be cooled efficiently. Therefore, the life of the lamps 12 to 12 can be prolonged, and the reliability can be improved. At this time,
The adjacent lamps 1 diverge from the arc tubes 10 to 10 of the four lamps 12 to 12 and pass through the reflectors 11 to 11
Most of the light traveling to the 2-12 side is directed to the second and first light guides 5.
As shown in FIG.
-The cooling of the lamps 12 to 12 can be performed more efficiently as compared with the embodiment of FIG.

FIGS. 6 and 7 show a sixth embodiment of the light source device according to the present invention, and the same parts as those in FIG. In FIG. 6, reference numeral 40E denotes a light source.
E is composed of four lamps 12 to 12, a light shielding wall 41E, and a holding member (not shown). The difference from the example of FIG. 1 is the structure of the light shielding wall.

That is, the light shielding wall 41E is arranged so as to partition the four lamps 12 to 12 vertically and horizontally.
The louver-shaped light-shielding walls are formed integrally with each other, and each louver-shaped light-shielding wall is formed of a plurality of light-shielding plates 61, 6 arranged at a predetermined interval (pitch) along the optical axis direction of the light emitted from the lamp.
., And the plate surface of each light shielding plate 61 is arranged obliquely with respect to the optical axis direction of the light emitted from the lamp. The light-shielding wall 41 </ b> E transmits, for each of the adjacent lamps 12, 12 of the four lamps 12 to 12, out of the light emitted from the arc tube of one of the lamps 12 and transmitted through the reflector 11 toward the other lamp 12. It is formed so as to block light and allow cooling air and the like to pass through gaps between the plurality of light shielding plates 61, 61, 61,....

Specifically, as shown in FIG. 6, the light-shielding wall 41E includes a quadrangular prism-shaped support member 60 arranged in the lamp house 30 along the optical axis direction of the light emitted from the lamp.
As shown in FIG. 7, a plurality of light shielding plates 61 to 6 vertically planted at predetermined intervals on each of four side surfaces of the support 60.
1, 61-61, 61-61, 61-61. The light-shielding plates 61 to 61 are formed so that their plate surfaces are inclined with respect to the optical axis direction of the light emitted from the lamps, and the light transmitted through the reflector 11 of one lamp 12 between adjacent lamps is transmitted to the other lamp 12. While blocking the light from entering, it allows the passage of cooling air and the like through the gap.
In FIG. 6, for simplicity of illustration, a plurality of light shielding plates 61 to 61 vertically planted at predetermined intervals on the front surface of the support 60.
And a plurality of light shielding plates 61-61, 61-61 vertically planted at predetermined intervals on the back, upper and lower surfaces of the support 60.
Illustration of 61 and 61-61 is omitted. The support 6
0 is fixed vertically to the inner side surface at the center of the fixed frame 32, and the other side end surface is fixed to a holding member (not shown). Locked or fixed to the wall.

Next, the operation of FIGS. 6 and 7 will be described. (1) In FIG. 6, light diverging from the arc tubes 10, 10 of the upper lamps 12, 12 out of the four lamps 12 to 12 and transmitted through the lower side of the reflectors 11, 11 passes through the light shielding wall 41 </ b> E. The plurality of light shielding plates 61 to 61, 61 to 61 are blocked from entering the lower lamps 12, 12. Also, the light diverging from the arc tubes 10 and 10 of the lower lamps 12 and 12 and passing through the upper side of the reflectors 11 and 11 is also a plurality of light shielding plates 61 to 61 and 61 of the light shielding wall 41E as described above.
The light incident on the upper lamps 12, 12 is blocked by 61.

(2) The arc tube 1 of the left and right lamps 12, 12 and 12, of the four lamps 12 to 12
Diverging from 0, 10 and 10, 10 and the reflectors 11, 1
Similarly to the case (1), the light transmitted through the right and left sides of the light-shielding walls 41E of the light-shielding walls 41E is also used.
-61 and 61-61, right and left lamp 12,
12 and 12 and 12 are blocked from entering.

(3) The light shielding plates 61 to 61, 61 to 6 planted on the four sides of the support 60 of the light shielding wall 41E.
1, 61 to 61, 61 to 61 are four lamps 12 to 1
2 is arranged at a position that vertically and horizontally partitions the cooling air, so that cooling air can pass through the respective gaps of the light shielding plates 61 to 61, 61 to 61, 61 to 61, 61 to 61.

(4) As described above, the mutual heating by the transmitted light between the four lamps 12 to 12 adjacent vertically and horizontally is performed by the light shielding plates 61 to 61, 61 to 61, 61 of the light shielding wall 41E.
61, 61-61, and the light shielding plates 61-61, 61-61, 61-61, 61-61.
The cooling air can be passed through the gap, so that the lamps 12 to 12 can be efficiently cooled and the lamps 12 to 12 can be prevented from becoming high temperature. Therefore, the life of the lamps 12 to 12 can be prolonged, and the reliability can be improved.

In the embodiment shown in FIG. 6 and FIG.
The length of the light emitted from the lamp 1E along the optical axis direction is La as in the case of FIG. 1, and the reflector 11 diverges from the arc tube 10 of one of the adjacent lamps 12 and 12
Although the description has been given of the case where the light transmitted through is blocked from entering the other lamp 12, the present invention is not limited to this, and the length along the optical axis direction of the lamp output light of the light shielding wall 41E is described. Is set to Lc as in the case of FIG. 2, the light diverging from the arc tube 10 of one of the lamps 12 and passing through the reflector 11 of the adjacent lamps 12
The present invention can also be applied to a case where light from the light emitting part of the second light emitting tube 10 is blocked. In this case, the size of the light-shielding wall 41E can be reduced to reduce the cost.

In the embodiment shown in FIG. 6 and FIG.
Although the plurality of light shielding plates 61 to 61 constituting 1E block incident light transmitted between the adjacent lamps 12, 12, the present invention is not limited to this, and the light shielding plates 61 to 61 are not limited thereto.
The angle of inclination of the plate surface with respect to the optical axis direction of the light emitted from the lamp is appropriately set, a reflection film is fixed on the surface to form a reflection mirror that reflects transmitted light, and heat radiation that receives reflected light and dissipates heat. It can also be used when a body is provided. In this case, the light shielding plates 61 to 61 suppress mutual heating between the lamps due to the transmitted light, and the gap between the light shielding plates 61 to 61 enables cooling of the lamp by cooling air.
Since the heating of the light shielding plates 61 to 61 themselves is suppressed by the reflection by the reflecting surface of the lamp 61 and the radiator, it is possible to more efficiently prevent the temperature of the lamp from becoming high.

In the above embodiment, the case where the light shielding wall is configured to block the mutual heating by the transmitted light between the adjacent lamps for all four lamps has been described. However, the present invention is not limited to this. The present invention can also be applied to a case in which a light shielding wall is configured to block mutual heating due to transmitted light between adjacent lamps of an arbitrary number (for example, two or three) of the four lamps.

In the above-described embodiment, the case of a light source device in which four lamps are arranged in parallel has been described. However, the present invention is not limited to this, and a plurality other than four (for example, two or six) is used. It is also possible to use a light source device in which the lamps are arranged in parallel.

[0070]

According to the first aspect of the present invention, there is provided a light source device comprising a plurality of lamps each having an arc tube and a reflector arranged in parallel, wherein a light-shielding wall is provided between any adjacent one of the plurality of lamps. The light-shielding wall prevents light diverging from the arc tube of one of the adjacent lamps and passing through the reflector from being incident on the other lamp, so that mutual heating by the transmitted light between the adjacent lamps is prevented. It is possible to suppress the temperature of the lamp by suppressing the temperature. Therefore, the life of the lamp can be prolonged, and the reliability can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the light shielding wall is connected to the luminous tube of the other lamp of the light diverging from the luminous tube of one of the adjacent lamps and passing through the reflector. Since the configuration is such that the transmitted light is blocked, the size of the light-shielding wall can be reduced and the cost can be reduced.

According to a third aspect of the present invention, in the first aspect of the present invention, the light shielding wall is formed by a reflection mirror, and the light which diverges from the arc tube of one of the adjacent lamps and passes through the reflector by the reflection mirror. Among them, the configuration is such that the light transmitted toward the other lamp is reflected and received by the radiator, so that the temperature rise of the light shielding wall itself can be suppressed and the lamp can be cooled efficiently.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the light shielding wall is formed by a reflection mirror, and the light which diverges from the arc tube of one of the adjacent lamps and passes through the reflector by the reflection mirror. Of the above, the light transmitted toward the arc tube of the other lamp is reflected and received by the radiator to dissipate heat, so that the temperature rise of the light shielding wall itself can be suppressed and the lamp can be efficiently cooled. .

According to a fifth aspect of the present invention, in the third or fourth aspect, the reflection mirror constituting the light-shielding wall is formed by a plate-shaped light-shielding wall main body and a reflection film fixed to the surface of the light-shielding wall main body. Since it is formed, the configuration of the light shielding wall can be simplified.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the light shielding wall is formed by a saw-tooth reflection mirror, and a plurality of reflection surfaces of the saw-tooth reflection mirror emit light of one of adjacent lamps. Of the light diverged from the tube and transmitted through the reflector, the light transmitted toward the other lamp is reflected and received by the radiator, so that the space for providing the light shielding wall can be reduced in volume. The lamp can be efficiently cooled.

According to a seventh aspect of the present invention, in the second aspect, the light shielding wall is formed by a saw-toothed reflecting mirror, and the plurality of reflecting surfaces of the sawtoothed reflecting mirror emit light of one of the adjacent lamps. Of the light emitted from the tube and transmitted through the reflector, the transmitted light toward the arc tube of the other lamp is reflected and received by the radiator, so that the space for providing the light shielding wall can be reduced in volume. As well as
The lamp can be efficiently cooled.

According to an eighth aspect of the present invention, in accordance with the sixth or seventh aspect of the present invention, the sawtooth-shaped reflecting mirror forming the light-shielding wall comprises a sawtooth-shaped light-shielding wall main body and a reflection film fixed to the surface of the light-shielding wall main body. Because of this, the configuration of the light shielding wall can be simplified.

According to a ninth aspect of the present invention, in the first aspect of the present invention, the light shielding wall is formed of a light guide, and the light guide diverges from the arc tube of one of the adjacent lamps and transmits through the reflector. Out of the light, the transmitted light going to the other lamp is received at one end face, emitted from the other end face and received by the radiator, so that the transmitted light involved in mutual heating between adjacent lamps Most can be blocked,
Cooling of the lamp can be performed more efficiently.

According to a tenth aspect of the present invention, in the second aspect, the light shielding wall is formed of a light guide, and
Of the light diverging from the arc tube of one of the adjacent lamps and passing through the reflector, the transmitted light toward the arc tube of the other lamp is received at one end face and emitted from the other end face and received by the radiator With this configuration, most of the transmitted light related to mutual heating between adjacent lamps can be blocked, and the cooling of the lamps can be performed more efficiently.

According to an eleventh aspect of the present invention, in the first or the second aspect of the present invention, the light shielding wall is formed by arranging a plurality of light shielding plates along the optical axis direction of the light emitted from the lamp at predetermined intervals. A louver-shaped light-shielding wall is disposed obliquely to the optical axis direction of the emitted light, and by blocking the transmitted light with a plurality of light-shielding plates, mutual heating due to transmitted light between adjacent lamps is suppressed, and a plurality of light-shielding plates are provided. Since the cooling air can pass through the gap formed in the lamp, the lamp can be cooled by the cooling air. Therefore, it is possible to efficiently cool the lamp and extend the life of the lamp.

According to a twelfth aspect of the present invention, in the eleventh aspect of the present invention, a reflection film is fixed to each surface of the plurality of light shielding plates, and diverges from the arc tube of one of the adjacent lamps and passes through the reflector. Since the configuration is such that the light transmitted to the other lamp among the light is reflected and received by the radiator, the temperature rise of the plurality of light shielding plates themselves can be suppressed, and the cooling efficiency of the lamp can be improved.

According to a thirteenth aspect of the present invention, in the first or the second aspect of the present invention, since the light shielding wall is formed of a heat conductor having a high thermal conductivity, the heat radiation efficiency at the light shielding wall is increased to improve the cooling efficiency of the lamp. be able to.

According to a fourteenth aspect of the present invention, in the invention of the fifth or eighth aspect, the light shielding wall main body is formed of a heat conductor having a high thermal conductivity, so that the radiation efficiency of the light shielding wall main body is increased and the cooling efficiency of the lamp is improved. Can be improved.

The fifteenth aspect of the present invention provides the eleventh or twelfth aspect.
In the present invention, since the plurality of light shielding plates are formed of a heat conductor having a high thermal conductivity, the radiation efficiency of the plurality of light shielding plates can be increased, and the cooling efficiency of the lamp can be improved.

According to a sixteenth aspect of the present invention, in the first or second aspect, the light-shielding wall is formed by a conductor having high thermal conductivity and an insulating film provided on the surface of the conductor. The radiation efficiency of the wall can be increased to improve the cooling efficiency of the lamp, and the discharge of the electrode of the arc tube to the light shielding wall can be prevented.

According to a seventeenth aspect, in the eleventh aspect, the plurality of light shielding plates are formed by a conductor having high thermal conductivity and an insulating film provided on the surface of the conductor.
The radiation efficiency of the light-shielding wall can be increased to improve the cooling efficiency of the lamp, and the discharge from the electrode of the arc tube to the light-shielding wall can be prevented.

[Brief description of the drawings]

FIGS. 1A and 1B are schematic structural views showing a first embodiment of a light source device according to the present invention, wherein FIG. 1A is a front view, and FIG.
It is an A line side view.

FIGS. 2A and 2B are schematic structural views showing a second embodiment of the light source device according to the present invention, wherein FIG. 2A is a front view, and FIG.
It is a B line side view.

FIGS. 3A and 3B are schematic diagrams showing a third embodiment of the light source device according to the present invention, wherein FIG. 3A is a front view, and FIG.
It is a C line side view.

FIG. 4 is a schematic sectional view showing a main part of a fourth embodiment of a light source device according to the present invention.

FIG. 5 is a schematic sectional view showing a fifth embodiment of the light source device according to the present invention.

FIG. 6 is a schematic sectional view of a main part of a light source device according to a sixth embodiment of the present invention.

FIG. 7 shows the support 60 and the light-shielding wall 6 of the light-shielding wall 41E in FIG.
It is a principal part schematic perspective view which shows the connection relationship of 1-61.

FIG. 8 is a schematic configuration diagram of a liquid crystal projector.

FIG. 9 is a schematic configuration diagram of a conventional multi-lamp type light source device, where (a)
FIG. 2 is a front view, and FIG. 2B is a sectional view taken along line DD of FIG.

[Explanation of symbols]

10: arc tube, 11: reflector, 12: lamp,
30 ... lamp house, 32 ... fixed frame, 40, 40
A, 40B, 40C, 40D, 40E: Light source (light source device), 41, 41A, 41B, 41C, 41D, 41
E: light shielding wall, 41a, 41Aa, 41Ba, 41Ca
... light shielding wall body, 41b, 41Ab ... insulating film, 41B
b, 41Cb: reflection film, 42: holding member, 45, 4
6 ... radiator, 51, 52 ... light guide, 60 ... support,
Reference numeral 61 denotes a light-shielding plate, La denotes the length of the light-shielding wall 41 along the optical axis direction of the light emitted from the lamp, Lb denotes the length of the light emitting portion of the arc tube 10 along the optical axis direction of the light emitted from the lamp, Lc denotes the light emitted from the lamp. The length of the light shielding wall 41A along the optical axis direction, Ld ...
The length of the component of the light shielding wall 41B parallel to the optical axis direction of the light emitted from the lamp, Le: the length of the light shielding wall 41C along the optical axis direction of the light emitted from the lamp, S1: the light receiving end face of the light guide 52, S2
... Emission end face of the light guide 51.

Claims (17)

[Claims] 1. A light source device in which a plurality of lamps each having an arc tube and a reflector are arranged in parallel, and a reflector of each lamp reflects light diverging from the arc tube and emits light having a parallel optical axis. A light-shielding wall is provided between any adjacent ones of the lamps to block light emitted from the arc tube of one of the adjacent lamps and transmitted through the reflector from entering the other lamp. Characteristic light source device. 2. A light-shielding wall, of light emitted from the arc tube of one of the adjacent lamps and transmitted through the reflector,
2. The light source device according to claim 1, wherein the light source device is formed in a shape that blocks transmitted light toward an arc tube of the other lamp. 3. A light shielding wall which is diverged from the arc tube of one of the adjacent lamps and transmitted through the reflector.
2. The light source device according to claim 1, wherein the light source device is formed by a reflecting mirror that reflects the transmitted light toward the other lamp, and that receives a reflected light from the reflecting mirror and dissipates heat. 4. A light-shielding wall which diverges from the arc tube of one of the adjacent lamps and transmits through the reflector.
3. The light source device according to claim 2, wherein the light source device is formed by a reflection mirror that reflects light transmitted toward the arc tube of the other lamp, and that receives a light reflected from the reflection mirror and radiates heat. 5. The light source device according to claim 3, wherein the reflection mirror is formed of a plate-shaped light-shielding wall main body and a reflection film fixed on a surface of the light-shielding wall main body. 6. A light-shielding wall which diverges from the arc tube of one of the adjacent lamps and transmits through the reflector.
2. The radiator according to claim 1, further comprising a sawtooth-shaped reflecting mirror for reflecting the transmitted light toward the other lamp by a plurality of reflecting surfaces, and a radiator for receiving and radiating the reflected light from the sawtooth-shaped reflecting mirror. Light source device. 7. A light-shielding wall, of light emitted from the arc tube of one of the adjacent lamps and transmitted through the reflector,
11. A radiator, comprising: a sawtooth-shaped reflecting mirror for reflecting transmitted light toward an arc tube of the other lamp on a plurality of reflecting surfaces; and receiving a reflected light from the sawtooth-shaped reflecting mirror and dissipating heat. 3. The light source device according to 2. 8. The light source device according to claim 6, wherein the serrated reflection mirror is formed by a serrated light shielding wall main body and a reflection film fixed to a surface of the light shielding wall main body. 9. The light shielding wall, of the light emitted from the arc tube of one of the adjacent lamps and transmitted through the reflector,
Light transmitted toward the other lamp is formed by a light guide that receives light at one end face and emits light from the other end face, and receives light emitted from the light guide and emits heat to the emission side of the light guide. The light source device according to claim 1, further comprising a radiator. 10. A light shielding wall, which is transmitted from a light emitting tube of one of the adjacent lamps to the light emitting tube of the other lamp and transmitted through the reflector, is received by one end face of the light receiving wall at the other end, and 3. The light source device according to claim 2, wherein the light guide device is formed of a light guide that is emitted from an end face of the light guide, and a heat radiator that receives light emitted from the light guide and radiates the light is provided on an emission side of the light guide. 11. A louver in which a plurality of light shielding plates are arranged at predetermined intervals along the optical axis direction of the light emitted from the lamp, and the plate surfaces are arranged obliquely with respect to the optical axis direction of the light emitted from the lamp. The light source device according to claim 1, wherein the light source device is a light-shielding wall. 12. A reflection film for reflecting light transmitted from the arc tube of one of the adjacent lamps and transmitted through the reflector to the other lamp is fixed to each surface of the plurality of light shielding plates. 12. The light source device according to claim 11, further comprising a radiator for receiving and reflecting the light reflected by the reflection film. 13. The light source device according to claim 1, wherein the light shielding wall is formed of a heat conductor having a high thermal conductivity. 14. The light source device according to claim 5, wherein the light shielding wall main body is formed of a heat conductor having a high thermal conductivity. 15. The light source device according to claim 11, wherein the plurality of light shielding plates are formed of a heat conductor having a high thermal conductivity. 16. The light source device according to claim 1, wherein the light-shielding wall is formed of a conductor having a high thermal conductivity and an insulating film fixed to a surface of the conductor. 17. The light source device according to claim 11, wherein the plurality of light shielding plates are formed of a conductor having a high thermal conductivity and an insulating film fixed to a surface of the conductor.