JPH07182915A - Lighting system - Google Patents

Abstract

PURPOSE:To provide a lighting system capable of realizing cost reduction by separating two reflection mirrors, which surround a part of a light source, from each other, facilitating replacement of the light source from the reflection mirrors, and replacing only the light source. CONSTITUTION:In normal operation as shown in Fig. (a), reflection mirrors 19a, 19b are press-fitted to each other on a rotary shaft 25 as a support point in such a manner as to surround a light source 18, where a link 28 of the reflection mirror 19a is integrated with a link pin 29 of the reflection mirror 19b in an engaged state. The case where the light source 18 is not lighted or a mechanical shock or breakage occurs is shown in Fig. (b). The link 28 of the reflection mirror 19a is separated from the link pin 29 of the reflection mirror 19b so that an X-shaped spring 27 enlarges the reflection mirror 19a toward the direction while the reflection mirrors 19b toward the (c) direction, for mutual separation. The light source 18 is released from a socket unit H of the reflection mirrors 19a, 19b, thus drawing the light source 18 toward the same (d) direction as that of an optical axis X in Fig. (b) so as to replace it with another light source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a liquid crystal projection display, such as a metal halide lamp or a xenon lamp, which comprises a light source having opposing electrodes and a reflecting mirror.

[0002]

2. Description of the Related Art A conventional lighting device will be described below. Conventionally, in a liquid crystal projection display that illuminates light from the back of the liquid crystal panel and magnifies and projects an image presented on the liquid crystal panel by a projection optical system, the performance of an illuminating device for illuminating the liquid crystal panel is Due to the light incident angle characteristics of the liquid crystal panel, it is required to irradiate each pixel of the liquid crystal panel with light in the vertical direction, that is, as parallel as possible to the vertical line of the liquid crystal panel.

As an example of an illuminating device having such performance, a configuration of an illuminating device using a metal halide lamp as a light source is shown in FIG. 5 (see "Liquid Crystal Video Projector Technology" p.
78-p. 79 Trikeps). In FIG. 5, 1
Is a light source comprising a short arc type metal halide lamp having two electrodes facing each other, 2 is a reflecting mirror having a hard glass material and a reflecting surface A having a parabolic shape,
The light source 1 and the reflecting mirror 2 are made of a heat-resistant inorganic adhesive 3
It is fixed at an optimal optical position in the socket B of the reflecting mirror 2. In addition, a dielectric multilayer film that reflects only visible rays and transmits infrared rays and ultraviolet rays is formed by vapor deposition on the reflecting surface A on the inner surface of the reflecting mirror 2, and the infrared rays and ultraviolet rays emitted from the light source 1 are covered. By preventing the irradiation of the liquid crystal panel or the polarization filter (not shown), which is an illuminator, the deterioration of the optical characteristics of the liquid crystal panel and the polarization filter is prevented. The size of the reflecting mirror 2 is set, for example, to a size of the opening C of about 100 mm and a depth D of about 60 mm in a lighting device of a liquid crystal projection display using a liquid crystal panel having a diagonal size of 3 inches. ing.

[0004]

In such an illuminating device for a liquid crystal projection display, generally, various methods as shown in FIGS. 6 to 8 have been proposed as a method for supplying power to a light source. For example, FIG. 6 (as a reference, “Liquid Crystal Video Projector Technology” p.78 to p.79, Trikeps Corporation, JP-A-3-274651, JP-A4-1)
47555, etc.), the power supply stem line 6 provided at one end of the light source 4 (on the side of the opening C of the reflecting mirror 5 in FIG. 6) is provided with the reflecting mirror 5. It penetrates and is connected to a metal terminal plate 7 fixed to the outer surface of the reflecting mirror 5. Further, the terminal plate 7 has a screw 8 and the external lead-in wire 9a is connected to the terminal plate 7 with the screw 8. The stem wire 6, the terminal plate 7, the screw 8 and the external lead-in wire 9a are all electrically conductive. It is in a state. A crimping terminal 10a is crimped to the other end of the external lead-in wire 9a connected to the terminal plate 7 with a screw 8, and power is supplied from a lighting circuit (not shown) to the light source 4 via the crimping terminal 10a. It is supposed to be done.

At the other end of the light source 4 (the socket B side of the reflecting mirror 5 in FIG. 6), the power supply terminal 11 has a screw structure, and a nut 12 is used to connect the external lead-in wire 9
b is connected to the power supply terminal 11, and the external lead-in wire 9b,
Both the power supply terminal 11 and the nut 12 are electrically connected. A crimping terminal 10b is crimped to the other end of the external lead-in wire 9b connected to the power supply terminal 11 with the nut 12, and power from a lighting circuit (not shown) is supplied to the light source 4 via the crimping terminal 10b. It is supposed to be done. The light source 4 and the reflecting mirror 5 are optically aligned with each other, and then fixed to each other at the socket portion B of the reflecting mirror 5 with a heat-resistant adhesive 13.

Next, FIG. 7 (as a reference, Japanese Patent Laid-Open No. 3-134)
933 and Japanese Patent Laid-Open No. 4-355042) for power supply provided at one end of the light source 4 (on the side of the opening C of the reflecting mirror 5 in FIG. 7). The stem wire 6 penetrates the inside of the cylindrical socket 14 made of ceramic having an electrically insulating property together with the light source 4 to align the optical optical axis, and then the heat resistant adhesive is applied to the cylindrical socket 14. It is fixed by 13. The crimp terminal 10 is attached to the other end of the stem wire 6 fixed to the cylindrical socket 14.
a is crimped, and power is supplied from the lighting circuit (not shown) to the light source 4 via the crimp terminal 10a.

At the other end of the light source 4 (on the side of the socket B of the reflecting mirror 5 and the cylindrical socket 14 in FIG. 7), the power supply terminal 11 has a screw structure and is externally introduced by a nut 12. The wire 9b is connected to the power supply terminal 11, and the external lead-in wire 9b, the power supply terminal 11, and the nut 12 are all electrically connected. A crimping terminal 10b is crimped to the other end of the external lead-in wire 9b connected to the power supply terminal 11 with the nut 12, and power from a lighting circuit (not shown) is supplied to the light source 4 via the crimping terminal 10b. It is supposed to be done. In such a configuration, the cylindrical socket 14 is fitted into the reflecting mirror 5 and then the fixed spring 15
It is fixed by.

Next, FIG. 8 (as a reference, JP-A-2-27)
No. 0258, Japanese Patent Laid-Open No. 3-62444, Japanese Patent Laid-Open No. 3-282401), a power source made of a metal plate having a thickness of about 1 mm so as to cross the opening C of the reflecting mirror 5. A supply plate 16 is arranged. One of the power supply plates 16 is hooked on the peripheral portion of the reflecting mirror 5 and the other is provided by a pressing spring 17 formed of an open coil spring provided on the peripheral portion of the reflecting mirror 5 in FIG. The power supply plate 16 is set to be pressed in the a direction (the direction of the arrow). In such an arrangement, the protrusion E in the central portion of the power supply plate 16 is pressed into contact with one end of the light source 4 (on the side of the opening C of the reflecting mirror 5 in FIG. 8) to be in an electrically conductive state. It has become. An external lead-in wire 9a is electrically connected to an end portion of the power supply plate 16, and a crimp terminal 10a is crimped to the other end of the external lead-in wire 9a.
The power source from the lighting circuit (not shown) is connected to the light source 4 via 0a.
To be supplied to.

At the other end of the light source 4 (the socket B side of the reflecting mirror 5 in FIG. 8), the power supply terminal 11 has a screw structure, and a nut 12 is used to connect the external lead-in wire 9
b is connected to the power supply terminal 11, and the external lead-in wire 9b,
Both the power supply terminal 11 and the nut 12 are electrically connected. A crimp terminal 10b is connected to the other end of the external lead-in wire 9b which is connected to the power terminal 11 with a nut 12, and power from a lighting circuit (not shown) is supplied to the light source 4 via the crimp terminal 10b. It is supposed to be done. There is a protrusion F at the other end of the light source 4, and the power supply plate 16 is pressed by the pressing spring 17 to cause the socket B of the reflecting mirror 5 to come into contact.
The projecting portion F is fixed in a pressed state.

The above is an example of a method of generally supplying power to a light source in a lighting device for a liquid crystal projection display. In the illuminating device having such a configuration, when the light source does not turn on at the end of its life or is damaged due to some cause, it becomes necessary to repair or replace the illuminating device.

For example, in the case of the lighting device shown in FIG. 6, the light source 4 is fixed to the socket portion B of the reflecting mirror 5 with the adhesive 13, and the stem wire 6 penetrates the reflecting mirror 5 and the terminal plate 7 is formed. Since it is hard to separate the light source 4 and the reflecting mirror 5 because they are connected to each other, the light source 4 and the reflecting mirror 5 are replaced while being integrated.

A short arc type metal halide lamp is used as a light source of an illuminating device used in a liquid crystal projection display because of its luminous efficiency, life, and easy light distribution control (easy to handle as a point light source). There are many. Current metal halide lamps for liquid crystal projection displays have a life of about 1500 hours to 2000 hours, which is 1/5 to 1/7 of that of CRTs used for CRT (cathode ray tube) projection displays.

However, in the illuminating device, even if the metal halide lamp reaches the end of its life, the reflecting mirror is not yet at the end of its life and can be used in many cases. Therefore, in the case of the example of FIG. 6, although the reflecting mirror 5 can still be used, since it is integrated with the light source 4, both the light source 4 and the reflecting mirror 5 are replaced, which is economical. There is also a problem that the cost is increased from the viewpoint of sex.

In the case of the illuminating device shown in FIG. 7, after the fixing spring 15 is released, the light source 4 fixed to the cylindrical socket 14 can be pulled out from the side of the socket B of the reflecting mirror 5, so that the reflection is prevented. It is possible to replace only the light source 4 while leaving the mirror 5 inside the liquid crystal projection display (not shown). Alternatively, the lighting device including the light source 4 and the reflecting mirror 5 may be once pulled out from the liquid crystal projection display, and then only the light source 4 may be replaced and stored again in the liquid crystal projection display as the lighting device.

However, in any case, the light source 4 and the cylindrical socket 1 are arranged from the socket B side of the reflecting mirror 5.
In order to pull out the light source 4, the diameter of the socket B needs to be large enough for the light source 4 and the stem wire 6 to pass through. Therefore, the size of the reflecting surface occupied in the reflecting mirror 5 is inevitably limited (reduced), and in particular, in the portion where the distance between the light source 4 and the reflecting mirror 5 is the shortest, the light traveling from the light source 4 to the reflecting mirror 5 is The cylindrical socket 14 in the socket B is irradiated. Since the cylindrical socket 14 does not have the property of reflecting light as much as the reflecting surface of the reflecting mirror 5, the cylindrical socket 14 consequently blocks or dims the light.

In this state, when the shape of the reflecting surface of the reflecting mirror 5 is a paraboloid or an ellipse, the light reflected from the vicinity of the socket B is emitted along the optical axis of the reflecting mirror 5. Light source 4
The fact that the light radiated from the light source is blocked or dimmed by the cylindrical socket 14 lowers the brightness of the central portion of the screen surface (not shown) in the liquid crystal projection display. Therefore, the size (caliber) of the socket B needs to be as small as possible in order to maximize the size of the reflecting surface of the reflecting mirror 5.

Next, in the case of the illuminating device shown in FIG. 8, the size (caliber) of the socket B of the reflecting mirror 5 can be reduced to the size of the end of the light source 4, as shown in the example of FIG. Thus, the size of the reflecting surface of the reflecting mirror 5 can be utilized to the maximum.

However, in such a structure, when replacing the light source 4, first, the pressing spring 17 that presses the power supply plate 16 against the light source 4 is released, and then the light source 4 is moved to the reflecting mirror 5.
Will be pulled out from the side of the opening C. This work
Since the illumination device cannot be built in the liquid crystal projection display, the illumination device is once pulled out from the liquid crystal projection display, the power supply plate 16 is retracted, and then the light source 4 is turned on, as in the example of FIG. Will be withdrawn.
In such an exchange method, the light source 4 is placed in the opening C of the reflecting mirror 5.
It is necessary to perform the replacement work with great care so as not to damage the reflecting surface of the reflecting mirror 5 or damage the light source 4 when it is pulled out from, and it takes time to replace and the workability deteriorates. There's a problem.

Further, since the power supply plate 16 shields a part of the light emitted from the light source 4 and the reflecting mirror 5, the amount of light reaching the screen surface (not shown) is reduced. It is not so preferable to dispose the power supply plate 16 at the opening B of the reflecting mirror 5.

The present invention has been made in view of the above-mentioned problems, and an illumination device is constituted by a light source having two electrodes facing each other and a reflecting mirror having a quadratic curved surface partially surrounding the light source. However, by separating the reflecting mirror into two or more, it is possible to easily detach or attach the light source from the reflecting mirror, and to provide a lighting device in which the cost of the lighting device can be reduced by replacing only the light source. The purpose is.

[0021]

In order to solve the above problems, the illuminating device of the present invention has the following structure. (1) A light source having two electrodes facing each other, and two electrodes of the light source, and having the optical axis in the same direction as the axis,
In a lighting device including a reflecting mirror having a quadric surface of revolution that partially surrounds the light source, the reflecting mirror is separated into at least two or more. (2) In the opening of the reflecting mirror, the reflecting mirror is separated into two parts with the pivot axis arranged in the direction perpendicular to the optical axis as a fulcrum. (3) The reflecting mirror is separated into two parts with the turning axis arranged on the axis parallel to the optical axis of the reflecting mirror as a fulcrum. (4) A guide rod is arranged in a direction perpendicular to the optical axis of the reflecting mirror, and a sliding frame is penetrated through the guiding rod to utilize the operation of the sliding guide mechanism to separate the reflecting mirror into two parts. (5) A guide rod is arranged in a direction parallel to the optical axis of the reflecting mirror, and a sliding frame is penetrated through the guiding rod to utilize the operation of the sliding guide mechanism to separate the reflecting mirror into two. (6) The reflecting mirror is moved in a direction other than the direction perpendicular to the optical axis of the reflecting mirror or a direction other than the same direction to separate the reflecting mirror into two or more. (7) The light source can be attached to and detached from the reflecting mirror.

[0022]

[Operation] The operation of this configuration is as follows. In a lighting device including a light source and a reflecting mirror formed of a rotating quadric surface that partially surrounds the light source, (1) on the optical axis of the reflecting mirror, the perpendicular line at the opening of the reflecting mirror is the rotation axis, Separation into two or more, (2) Separation into two or more with an axis parallel to the optical axis of the reflecting mirror as a rotation axis, (3) Parallel movement in the direction perpendicular to the optical axis of the reflecting mirror, two or more (4) Move in the same direction as the optical axis of the reflecting mirror, and
The light source and the reflecting mirror can be attached and detached by any one of the following methods: (1) separate into two or more, and (5) move in a direction other than the direction perpendicular to the optical axis of the reflecting mirror or in a direction other than the same direction. As a result, the light source can be easily removed from the reflecting mirror, so that the reflecting mirror can be used continuously, and the light source can be replaced or only the light source and a part of the reflecting mirrors can be replaced, thereby reducing the cost of the lighting device. be able to.

Further, since the size of the socket portion of the reflecting mirror can be adjusted to the required minimum size by adjusting to the light source, the size of the reflecting surface of the reflecting mirror can be utilized to the maximum, and the illumination device can irradiate the light. The loss of the amount of light emitted can be reduced.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings applied to a liquid crystal projection display. Figure 1
1A and 1B are configuration diagrams showing an outline of the illumination device of the present embodiment, FIG. 1A is a configuration diagram of the embodiment before operation, and FIG. 1B is an operation diagram thereof. It is a block diagram.

In FIGS. 1A and 1B, 1
Reference numeral 8 denotes a light source comprising a short arc type metal halide lamp having two electrodes facing each other, and one end portion of the light source 18 (in FIG. 1, a reflecting mirror 19 separated into two).
The stem wire 20 for power supply is exposed to the outside from the opening G side of a, 19b through the socket H of the one reflecting mirror 19a, and the crimp terminal 21a is crimped to the end of the stem wire 20. There is. Power from a lighting circuit (not shown) is supplied to the light source 18 via the crimp terminal 21a. The reflecting mirrors 19a and 19b separated into two are made of hard glass, and the reflecting surface I has a parabolic shape as a whole.

At the other end of the light source 18 (on the side of the socket H of the reflecting mirrors 19a and 19b in FIG. 1), the power supply terminal 22 has a screw structure, and the nut 23 serves to connect the external lead-in wire 24. A power supply terminal 22 is connected, and a crimp terminal 21b is crimped to the other end of the external lead-in wire 24. Power is supplied from a lighting circuit (not shown) to the light source 18 via the crimp terminal 21b. It has become.

Reference numeral 25 is a rotary shaft for separating the reflecting mirrors 19a, 19b into two by rotating, and the reflecting mirrors 19a, 19b are provided.
It is arranged at two locations in the direction perpendicular to the optical axis at both ends of the opening G of b. Reference numerals 26a and 26b are holding frames for holding the reflecting mirrors 19a and 19b, and 27 is a biasing force of the holding frames 26a and 26b with the rotating shaft 25 as a fulcrum, so that the reflecting mirrors 19a and 19b.
Is a scissor-shaped spring for rotating the rotating shaft 25 so as to be vertically separated. 28 and 29 are reflectors 19a, 19
A link provided in the socket portion H of the reflecting mirror 19a so as to fix the two when pressed and fitted together, and a link pin provided in the socket portion H of the reflecting mirror 19b so as to receive this link 28. Is.

On the reflecting surfaces I of the reflecting mirrors 19a and 19b, a dielectric multilayer film that reflects only visible rays and transmits infrared rays and ultraviolet rays is formed by vapor deposition.
Prevents the infrared and ultraviolet rays emitted from the device from irradiating the liquid crystal panel or polarization filter (both not shown) that are the objects to be irradiated, thus preventing the optical characteristics of the liquid crystal panel and polarization filter from deteriorating. is doing. This reflector 19
The sizes of a and 19b are, for example, in a liquid crystal projection display illuminator using a liquid crystal panel having a diagonal size of 3 inches, the size of the opening G is about 100 mm, and the depth J is 60 mm.
It is set around mm.

The principle and operation of the illuminating device constructed as above will be described. The illumination device is normally set in a state as shown in FIG. That is, the reflecting mirror 19a and the reflecting mirror 19b are the light source 18
The reflecting mirrors 19a and 19b are integrated with each other in such a manner that the rotating shaft 25 is pressed to surround the stem wire 20 and the link 28 of the reflecting mirror 19a is fitted to the link pin 29 of the reflecting mirror 19b. Has been converted.

The position of the rotary shaft 25 is, as described above, based on the optical axis X of the openings G of the reflecting mirrors 19a and 19b, which is perpendicular to the optical axis X (perpendicular direction). Specifically, it may be set in any direction of the opening G as long as it is perpendicular to the optical axis X. Also, the reflecting mirror 1
The light source 18 surrounded by 9a and 19b includes a reflecting mirror 19a,
19b is arranged at a focal position or a substantially focal position on the optical axis X, and after performing optical optical axis alignment, the reflecting mirror 19
It is pressed and fixed by the socket portions H of a and 19b.

Next, when the light source 18 reaches the end of its life and does not light up, or is damaged or damaged by mechanical shock or other factors, the operation for replacing the light source 18 is as follows. First, the link 28 of the reflecting mirror 19a is detached from the link pin 29 of the reflecting mirror 19b. Reflector 19
On the side of the opening G of a and 19b, there is a scissor-shaped spring 27 arranged on the rotating shaft 25, and the action of this scissor-shaped spring 27 causes the reflecting mirror 19a to reflect in the b direction in FIG. The mirrors 19b are expanded and separated so as to repel each other in the c direction. In such a state, the light source 18 and the stem wire 20 are released from the socket portions H of the reflecting mirrors 19a and 19b, and the light source 18 and the stem wire 20 are connected to each other as shown in FIG.
Can be removed in the d direction, which is the same direction as the optical axis X, and can be replaced with an alternative light source (not shown).

In order to replace the light source 18 with an alternative light source and restore the normal state, the above operation may be reversed. That is, an alternative light source (not shown) is brought close to the reflectors 19a and 19b along the optical axis X of the reflectors 19a and 19b, and the alternative light source is pressed by the socket H and temporarily fixed, and then the light source is turned on. While illuminating and projecting the irradiation pattern of the lighting device on the screen surface (not shown), the alternative light source and the reflecting mirrors 19a, 1
9b, or after the optical axis is aligned by an optical or mechanical method without turning on the light source, the link 28 of the reflecting mirror 19a is connected to the link pin of the reflecting mirror 19b. It can be put into a normal lighting device state by fitting it to 29 and finally fixing an alternative light source.

In FIG. 1B of this embodiment, the reflecting mirror 19a is rotated in the b direction and the reflecting mirror 19b is rotated in the c direction, but one of the reflecting mirrors 19a and 19b is fixed. , The light source 18 and the stem line 2 even if the other is rotated.
0 can be removed. Further, in this embodiment, the link 28 of the reflecting mirror 19a is detached from or fitted to the link pin 29 of the reflecting mirror 19b, or the light source 18 is fixed to the reflecting mirror 1.
Although the method of detaching or fitting from the socket portion H of 9a, 19b is not described in detail, it may be performed manually as a general method. Instead of manual operation, an electromagnetic solenoid, a motor, a crank mechanism or the like may be combined. You may implement automatically.

As a result of the above operation, in the first embodiment, the reflecting mirror 19a, 19b is provided with the rotating shaft 25 arranged in the direction perpendicular to the optical axis X as the fulcrum in the opening G of the reflecting mirror 19a, 19b.
By separating a and 19b into two, the light source 18 can be easily removed. Therefore, the reflector 19
While a and 19b can be continuously used, only the light source 18 can be replaced, and the cost of the lighting device can be reduced. Further, since the size of the socket portion H of the reflecting mirrors 19a and 19b can be adjusted to the required minimum size by matching with the light source 18, the size of the reflecting surface I of the reflecting mirrors 19a and 19b can be used to the maximum extent. Therefore, there is an effect that the loss of the amount of light emitted from the lighting device can be reduced.

Next, a second embodiment of the present invention will be described with reference to the accompanying drawings. 2 (a) and 2 (b),
It is a block diagram which shows the outline of the illuminating device of a present Example, and is the figure which looked at the reflecting mirrors 19a and 19b demonstrated in 1st Example from the direction of the opening part G, and FIG. FIG. 2B is a configuration diagram before the operation, and FIG. 2B is a configuration diagram after the operation. 2 (a) and 2 (b), the basic positional relationship and names of constituent parts and their roles are the same as those in the first embodiment described above, and the description thereof will be given in this embodiment. Is omitted.

The second embodiment differs from the first embodiment in that the reflecting mirrors 19a and 19b can be separated into the reflecting mirror 19a and the reflecting mirror 19b by using an axis parallel to the optical axis X as a rotation axis. That is what I did.

In the above, the configuration and operation will be described. The illumination device is normally set in a state as shown in FIG. That is, the reflecting mirror 19a and the reflecting mirror 19b are pressed against each other so as to surround the light source 18 and the stem line 20 with the rotating shaft 25 arranged in a direction parallel to the optical axis near the periphery of the opening G side as a fulcrum. Further, the link 2 provided on the opposite side of the reflecting mirror 19a from the rotating shaft 25.
8 is fitted to a link pin 29 provided at a position facing the link 28 of the reflecting mirror 19b, the reflecting mirror 1
9a and 19b are integrated.

The position of the rotating shaft 25 is, as described above, near the periphery of the opening G of the reflecting mirrors 19a and 19b.
In addition, the axis is parallel to the optical axis X, and in principle, it may be set at any position near the periphery of the opening G as long as the direction is parallel to the optical axis X.

Further, the light source 18 surrounded by the reflecting mirrors 19a and 19b is arranged at a focal position or a substantially focal position on the optical axis X of the reflecting mirrors 19a and 19b, and after performing optical optical axis alignment, Socket portion H of reflecting mirrors 19a and 19b
It is pressed and fixed by.

Next, when the light source 18 reaches the end of its life and does not light up, or is damaged or damaged due to mechanical shock or other factors, the operation for replacing the light source 18 is as follows. First, the link 28 of the reflecting mirror 19a is detached from the link pin 29 of the reflecting mirror 19b. Reflector 19
There are scissor-shaped springs 27 arranged on the rotary shaft 25 near the periphery of a and 19b, and the action of the scissor-shaped springs 27 causes the reflecting mirror 19a to move in the direction e in FIG.
b are pushed apart so as to repel each other in the f direction and separated. In such a state, the light source 18 and the stem wire 20 are released from the socket portions H of the reflecting mirrors 19a and 19b, and the light source 18 and the stem wire 20 are pulled out in the g direction perpendicular to the optical axis X of FIG. 2B. And can be replaced with an alternative light source (not shown).

In order to replace the light source 18 with an alternative light source and return it to the normal state, the above operation may be reversed. That is, an alternative light source (not shown) is brought close to the reflectors 19a and 19b along the direction of the normal to the optical axis X of the reflectors 19a and 19b, and the alternative light source is pressed by the socket H and temporarily fixed. , The light source is turned on and the irradiation pattern of the illumination device is projected on the screen surface (not shown), and the optical axes of the alternative light source and the reflecting mirrors 19a and 19b are optically aligned, or the light source is turned on. After performing the optical axis alignment without using the optical or mechanical method, the link 2 of the reflecting mirror 19a
By fitting 8 into the link pin 29 of the reflecting mirror 19b and finally fixing an alternative light source, the state of a normal lighting device can be obtained.

In FIG. 2B of this embodiment, the reflecting mirror 19a is rotated in the e direction and the reflecting mirror 19b is rotated in the f direction, but one of the reflecting mirrors 19a and 19b is fixed. , The light source 18 and the stem line 2 even if the other is rotated.
0 can be removed. Further, in this embodiment, the link 28 of the reflecting mirror 19a is detached from or fitted to the link pin 29 of the reflecting mirror 19b, or the light source 18 is fixed to the reflecting mirror 1.
Although the method of detaching or fitting from the socket portion H of 9a, 19b is not described in detail, it may be performed manually as a general method. Instead of manual operation, an electromagnetic solenoid, a motor, a crank mechanism or the like may be combined. You may implement automatically.

With the above operation, in the second embodiment, the two reflecting mirrors 19a and 19b are provided with the rotating shaft 25 arranged on the axis parallel to the optical axis X of the reflecting mirrors 19a and 19b as a fulcrum. The light source 18 can be easily pulled out by separating the light source 18 into Therefore, the reflecting mirrors 19a and 19b can be continuously used, and only the light source 18 can be replaced, so that the cost of the illuminating device can be reduced. Further, since the size of the socket portion H of the reflecting mirrors 19a and 19b can be adjusted to the required minimum size by matching with the light source 18, the size of the reflecting surface I of the reflecting mirrors 19a and 19b can be used to the maximum extent. Therefore, there is an effect that the loss of the amount of light emitted from the lighting device can be reduced.

Next, a third embodiment of the present invention will be described with reference to the accompanying drawings. 3 (a) and 3 (b),
FIG. 3A is a configuration diagram showing an outline of the illumination device of the present embodiment.
Is a configuration diagram of the present embodiment before operation, and FIG. 3B is a configuration diagram of after operation. In FIG. 3A and FIG. 3B, the basic positional relationship, names and roles of the constituent parts are the same as those in the first and second embodiments described above. Will not be described.

The third embodiment differs from the first and second embodiments in that the reflecting mirrors 19a and 19b are moved in parallel in the direction perpendicular to the optical axis X, and the reflecting mirrors 19a and 19b.
That is, b can be separated.

In FIGS. 3 (a) and 3 (b), 3
Reference numeral 0a is a holding frame for holding the reflecting mirror 19a, 30b is a holding frame for holding the reflecting mirror 19b, and 31 is a guide arranged in parallel to separate the reflecting mirrors 19a and 19b into two by the principle of a slide guide mechanism. Guide rods, 32a, 32
Reference numeral b denotes a fixed frame that supports and fixes the guide rod 31, and is supported by a housing of a lighting device (not shown). 33a, 33b
Is a sliding frame through which the guide rod 31 penetrates and is fixed to the holding frames 30a and 30b holding the reflecting mirrors 19a and 19b.

In the above, the configuration and operation will be described. The illumination device is normally set in a state as shown in FIG. That is, the reflecting mirrors 19a and 19b surround the light source 18 and the stem line 20, and both reflecting mirrors 19a and 19b are bounded by the optical axis X as a boundary.
b are pressed against each other in the direction of approaching and separating from each other, and the link 28 provided in the socket portion H of the reflecting mirror 19a is fitted to the link pin 29 provided in the socket portion H of the reflecting mirror 19b. 19a and 19b are integrated.

3 (a) and 3 (b), the guide rod 31 and the sliding frames 33a, 33b are installed in two sets in parallel with the reflecting mirrors 19a, 19b sandwiched therebetween. , 19b can be moved in a direction perpendicular to the optical axis X with respect to each other.

Further, the light source 18 surrounded by the reflecting mirrors 19a and 19b is arranged at a focal position or a substantially focal position on the optical axis X of the reflecting mirrors 19a and 19b, and after performing optical optical axis alignment, Socket portion H of reflecting mirrors 19a and 19b
It is pressed and fixed by.

Next, when the light source 18 is at the end of its life and does not light up, or is damaged or damaged due to mechanical shock or other factors, the operation for replacing the light source 18 is as follows. First, the link 28 of the reflecting mirror 19a is detached from the link pin 29 of the reflecting mirror 19b. Reflector 19
Since there are guide rods 31 at both ends of the openings G of a and 19b, and the sliding frames 33a and 33b respectively penetrate therethrough,
The reflecting mirror 19a can be moved in the h direction in FIG. 2B, and the reflecting mirror 19b can be moved in the i direction. In such a state, when the reflecting mirrors 19a and 19b are separated, the light source 18 and the stem line 20 are separated from the reflecting mirrors 19a and 19b.
The light source 18 and the stem wire 20 are released from the socket H of b, and the light source 18 and the stem wire 20 can be withdrawn in the d direction which is the same direction as the optical axis X of FIG. You can

In order to replace the light source 18 with an alternative light source and return it to the normal state, the above operation may be reversed. That is, an alternative light source (not shown) is brought closer to the reflectors 19a and 19b along the direction of the optical axis X of the reflectors 19a and 19b, and the alternative light source is pressed by the socket H and temporarily fixed, While the light source is turned on and the irradiation pattern of the illumination device is projected on the screen surface (not shown), the optical axes of the alternative light source and the reflecting mirrors 19a and 19b are optically aligned, or the light source is turned on. After the optical axis is aligned by an optical or mechanical method, the link 2 of the reflecting mirror 19a
By fitting 8 into the link pin 29 of the reflecting mirror 19b and finally fixing an alternative light source, the state of a normal lighting device can be obtained.

In FIG. 3B of this embodiment, the reflecting mirror 19a is moved in the h direction and the reflecting mirror 19b is moved in the i direction. However, one of the reflecting mirrors 19a and 19b is fixed, Even if the other is moved, the light source 18 and the stem line 2
0 can be removed. Further, in this embodiment, the link 28 of the reflecting mirror 19a is detached from or fitted to the link pin 29 of the reflecting mirror 19b, or the light source 18 is fixed to the reflecting mirror 1.
Although the method of detaching or fitting from the socket portion H of 9a, 19b is not described in detail, it may be performed manually as a general method. Instead of manual operation, an electromagnetic solenoid, a motor, a crank mechanism or the like may be combined. You may implement automatically.

With the above operation, in the third embodiment, the operation of the guide rod 31 and the slide guide mechanism of the slide frames 33a and 33b arranged in the direction perpendicular to the optical axis X of the reflecting mirrors 19a and 19b is utilized. By separating the reflecting mirrors 19a and 19b into two, the light source 18 can be easily removed. Therefore, the reflecting mirrors 19a and 19b can be continuously used, and only the light source 18 can be replaced.
The cost of the lighting device can be reduced. Also,
The size of the socket portion H of the reflecting mirrors 19a and 19b is set to the light source 1
The size of the reflecting surface I of the reflecting mirrors 19a and 19b can be maximized and the loss of the amount of light emitted from the lighting device can be reduced. effective.

In the present embodiment, the principle of the slide guide mechanism consisting of the guide rod 31 and the slide frames 33a and 33b is applied to separate the reflecting mirrors 19a and 19b in the direction perpendicular to the optical axis X. , A mirror 1 in the direction perpendicular to the optical axis X
The slide guide mechanism is not particularly limited as long as it is a mechanism capable of moving 9a and 19b.

Next, a fourth embodiment of the present invention will be described with reference to the accompanying drawings. 4 (a) and 4 (b),
FIG. 4A is a configuration diagram showing an outline of the illumination device of the present embodiment.
Is a configuration diagram of the present embodiment before operation, and FIG. 4B is a configuration diagram of after operation. In FIG. 4A and FIG. 4B, the basic positional relationship and names of constituent parts and their roles are the same as in the first to third embodiments described above, and in this embodiment, Will not be described.

The fourth embodiment differs from the first to third embodiments in that the reflecting mirror is placed on a surface K perpendicular to the optical axis X.
It is possible to separate them by separating them into two by moving them in the same direction as the optical axis X.

In FIGS. 4A and 4B, 3
Reflectors 4a and 34b are separated into two parts on the side of the opening G and the side of the socket part H on the surface K perpendicular to the optical axis X, and are made of hard glass and the shape of the reflecting surface I is a parabolic surface. , 35a is a holding frame for holding the reflecting mirror 34a, 35b is a holding frame for holding the reflecting mirror 34b, and 36a, 36b are arranged parallel to the separating direction for separating the reflecting mirrors 34a, 34b into two by the principle of a slide guide mechanism. Each of the guide rods serves as a guide and is fixed to the holding frame 35a in a state parallel to the optical axis X.

37a and 37b are slide frames through which the guide rods 36a and 36b penetrate to move the reflecting mirror 34b in the direction of the optical axis X, and 38a and 38b are holding frames 35b holding the reflecting mirror 34b and a sliding frame 37a. , 37b are connected to each other, 39 is a fixing screw for fixing the socket portion H of the reflecting mirror 34b to the holding frame 35b, 40a, 40b
Is a slide frame 37a, 3 that moves the guide rods 36a, 36b.
7b is a set screw for fixing 7b at an optimum position.

In the above, the configuration and operation will be described. The illumination device is normally set in a state as shown in FIG. That is, the main reflecting mirror 34a and the auxiliary reflecting mirror 34b surround the light source 18 and the stem line 20, and both reflecting mirrors 34a and 34b are approached and separated from each other with the plane K perpendicular to the optical axis X as a boundary. The slide frames 37a, 37b, which are pressed against each other in the direction of the guides and through which the guide rods 36a, 36b penetrate, are set with the positioning screws 37a, 37.
The reflecting mirrors 34a and 34b are integrated by fixing the guide rods 36a and 36b to the optimum positions with b.

The light source 18 surrounded by the reflecting mirrors 34a and 34b is arranged at a focal position or a substantially focal position on the optical axis X of the reflecting mirrors 34a and 34b, and after performing optical optical axis alignment, The slide frames 37a and 37b are attached to the guide rod 36.
It is fixed to a and 36b with positioning screws 37a and 37b.

Next, when the light source 18 reaches the end of its life and does not light up, or is damaged or damaged due to mechanical shock or other factors, the operation for replacing the light source 18 is as follows. First, the positioning screws 40a and 40b are loosened to release the sliding frames 37a and 37b fixed to the guide rods 36a and 36b. Next, the sliding frames 37a, 3
7b is moved in the d direction of FIG. 4A, and the light source 18 and the stem line 20 are pulled out from the reflecting mirror 34b. Figure 4 (b)
The state in which the light source 18 and the stem wire 20 are drawn from the reflecting mirror 34b is shown in FIG. The sliding frames 37a and 37b are shown in FIG.
As shown in (b), after temporarily fixing the guide rods 36a and 36b in the state of being arranged, or after completely removing the guide rods 36a and 36b, the fixing screw 39 of the holding frame 35b is loosened, and the reflecting mirror 34b can be removed from the holding frame 35b and replaced with an alternative light source (not shown).

In order to replace the light source 18 with an alternative light source and return to the normal state, the above operation may be reversed. That is, an alternative light source (not shown) is used to hold the holding frame 3 of the reflecting mirror 34b.
5b, and the fixing screw 39 is tightened and temporarily fixed. In this state, the sliding frames 37a and 37b are attached to the guide rod 36.
Guide rods 36a, 36b if removed from a, 36b
And slide frames 37a and 37b are moved toward the reflecting mirror 34a, that is, in the k direction. In addition, the sliding frame 37
If a and 37b are temporarily fixed to the ends of the guide rods 36a and 36b, after loosening the positioning screws 40a and 40b, the sliding frames 37a and 37b are moved toward the reflecting mirror 34a, that is, in the k direction.

When an alternative light source is inserted into the reflecting mirror 34a and the reflecting mirror 34b is pressed into contact with the reflecting mirror 34a and integrated, the sliding frames 37a, 37 are attached to the guide rods 36a, 36b.
The positioning screws 40a and 40b of b are temporarily tightened.
In such a state, the reflecting mirror 34b temporarily fixed by the fixing screw 39 is adjusted in optical axis, and then fixed by the fixing screw 39, and the positioning screws 4 for the sliding frames 37a, 37b are also adjusted.
By tightening and fixing 0a and 40b, the state of a normal lighting device can be obtained.

In this embodiment, the alternative light source is arranged on the reflecting mirror (corresponding to the reflecting mirror 34b in FIGS. 4A and 4B) using another jig in advance, and the light source is turned on. Then, while projecting the irradiation pattern on the screen surface (not shown), the optical axis of the alternative light source and the reflecting mirror are optically aligned, or an optical or mechanical method without turning on the light source. After aligning the optical axes with, they are fixed with a heat-resistant adhesive. This light source is not limited to a fixing method using an adhesive as long as the light source and the reflecting mirror are integrated by a mechanism that can be fixed to the reflecting mirror.

Further, in this embodiment, the guide rods 36a, 3
6b along the sliding frames 37a, 37b in the d direction or k
The manual operation of moving the reflecting mirror 34b from the holding frame 35b or moving the reflecting mirror 34b into or out of the holding frame 35b may be performed automatically by combining an electromagnetic solenoid, a motor, a crank mechanism or the like instead of manually. .

Further, in this embodiment, the guide rods 36a, 3
Although 6b is fixed to the holding frame 35a of the reflecting mirror 34a, it may be fixed to a housing of an illuminating device (not shown) or the like. Also,
In this embodiment, the guide rods 36a and 36b and the sliding frame 3
By applying the principle of the slide guide mechanism composed of 7a and 37b, the reflecting mirrors 34a and 34b are separated into two in the same direction as the optical axis X.
The sliding guide mechanism is not particularly limited as long as it can move a and 34b.

With the above operation, in the fourth embodiment, the operation of the slide guide mechanism of the guide rods 36a and 36b and the slide frames 37a and 37b arranged in the direction parallel to the optical axis X of the reflecting mirrors 34a and 34b is utilized. Then, the reflecting mirrors 34a and 34b
The light source 18 can be easily removed by separating the light source 18 into two. Therefore, the reflecting mirror 34a can be continuously used, and the light source 18 and the reflecting mirror 34b can be exchanged, and the cost of the lighting device can be reduced. Further, since the size of the socket portion H of the reflecting mirror 34b can be adjusted to the required minimum size by matching with the light source 18, the size of the reflecting surface I of the reflecting mirrors 34a and 34b can be utilized to the maximum extent, There is an effect that the loss of the amount of light emitted from the lighting device can be reduced. Incidentally, in the third embodiment of the present invention, the reflecting mirrors 19a and 19b are arranged in the direction perpendicular to the optical axis X, and in the fourth embodiment, the reflecting mirrors 34a and 34b are arranged.
By moving 4b in the same direction as the optical axis X, the reflecting mirrors 19a and 19b and the reflecting mirrors 34a and 34b are moved.
Although b is divided into two, the reflecting mirror 19 is not limited to the direction perpendicular to the optical axis X or the same direction, but is not limited to the same direction.
a, 19b and reflecting mirrors 34a, 34b are moved to 2
Even if they are separated, the same action and effect can be obtained.

Further, in the first to fourth embodiments of the present invention, the reflecting mirrors 19a, 19b, 34a, 34b are used.
Although the shape of the reflecting surface I is a parabolic surface, the same action and effect can be obtained even if the surface is a quadric surface of revolution such as an ellipsoid or a hyperboloid instead of the parabolic surface.

Further, in the first to fourth embodiments of the present invention, the reflecting mirror 19a and the reflecting mirror 19b or the reflecting mirror 34a and the reflecting mirror 34b are separated into two, respectively, but 2 Even if two or more reflecting mirrors are separated, the same action and effect can be obtained.

In the first to fourth embodiments of the present invention, the light source 18 is a short arc type metal halide lamp, but a point-like high brightness light source such as a halogen bulb or a short arc type xenon is used. There may be a lamp.

[0071]

As described above, according to the present invention, the following effects can be obtained. Light source and rotation 2 that partially surrounds this light source
In a lighting device configured with a reflecting mirror formed of a curved surface, (1) In the opening of the reflecting mirror, by separating the reflecting mirror into two by using a rotation axis arranged in a direction perpendicular to the optical axis as a fulcrum, The light source can be easily removed. Therefore, the reflecting mirror can be continuously used, and only the light source can be replaced, so that the cost of the lighting device can be reduced. In addition, the size of the reflector's socket can be adjusted to the light source so that the size of the reflector's reflective surface can be maximized and the amount of light emitted from the lighting device can be maximized. There is an effect that the loss of can be reduced. (2) The light source can be easily pulled out by separating the reflecting mirror into two parts by using the rotation axis arranged on the axis parallel to the optical axis of the reflecting mirror as a fulcrum. Therefore, the reflecting mirror can be continuously used, and only the light source can be replaced, so that the cost of the lighting device can be reduced. In addition, the size of the reflector socket can be adjusted to the light source so that the size of the reflector can be minimized. Therefore, the size of the reflecting surface of the reflector can be maximized, and the amount of light emitted from the lighting device can be reduced. There is an effect that loss can be reduced. (3) The light source can be easily removed by separating the reflecting mirror into two by utilizing the operations of the guide rod and the sliding guide mechanism of the sliding frame which are arranged in the direction perpendicular to the optical axis of the reflecting mirror. it can. Therefore, the reflecting mirror can be continuously used, and only the light source can be replaced, so that the cost of the lighting device can be reduced. In addition, the size of the reflector's socket can be adjusted to the light source so that the size of the reflector's reflective surface can be maximized and the amount of light emitted from the lighting device can be maximized. There is an effect that the loss of can be reduced. (4) The light source can be easily removed by separating the reflecting mirror into two by utilizing the operations of the guide rod and the sliding guide mechanism of the sliding frame arranged in the direction parallel to the optical axis of the reflecting mirror. it can. Therefore, the main reflecting mirror can be continuously used, and the light source and the auxiliary reflecting mirror can be exchanged, and the cost of the lighting device can be reduced. In addition, the size of the auxiliary reflector's socket can be adjusted to the light source by adjusting it to the minimum size, so the size of the main reflector and the auxiliary reflector's reflective surface can be maximized. It can be utilized as much as possible, and there is an effect that the loss of the amount of light emitted from the lighting device can be reduced.

[Brief description of drawings]

FIG. 1A is a configuration diagram of an illumination device according to a first embodiment of the present invention before operation. (B) It is a block diagram after operation of the illuminating device in the 1st Example of this invention.

FIG. 2 (a) is a configuration diagram before the operation of the lighting device according to the second embodiment of the present invention. (B) It is a block diagram after operation of the illuminating device in the 2nd Example of this invention.

FIG. 3A is a configuration diagram of an illumination device in a third embodiment of the present invention before operation. (B) It is a block diagram after operation of the illuminating device in the 3rd Example of this invention.

FIG. 4 (a) is a configuration diagram of an illumination device in a fourth embodiment of the present invention before the operation. (B) It is a block diagram after operation of the illuminating device in the 4th Example of this invention.

FIG. 5 is a cross-sectional view of a lighting device using a parabolic reflector of a conventional example.

FIG. 6 is a cross-sectional view showing a configuration of a lighting device that supplies power by penetrating a reflecting mirror of a conventional example.

FIG. 7 is a cross-sectional view showing a configuration of a lighting device that supplies power via a conventional cylindrical socket.

FIG. 8 is a cross-sectional view showing a configuration of a lighting device that supplies power from the opening side of a conventional example.

[Explanation of symbols]

18 Light source 19a, 19b, 34a, 34b Reflector 20 Stem wire 21a, 21b Crimp terminal 22 Power supply terminal 23 Nut 24 External lead-in wire 25 Rotating shaft 26a, 26b, 30a, 30b, 35a, 35b Holding frame 27 Scissor spring 28 Link 29 Link pin 31, 36a, 36b Guide rod 32a, 32b Fixing frame 33a, 33b, 37a, 37b Sliding frame 38a, 38b Connecting frame 39 Fixing screw 40a, 40b Positioning screw

Claims (7)

[Claims] 1. A reflector comprising a light source having two electrodes facing each other and a rotating quadric surface which includes two electrodes of the light source and has an optical axis in the same direction as the axis and partially surrounds the light source. An illuminating device constituted by the above, wherein the reflecting mirror can be separated into at least two or more. 2. The illuminating device according to claim 1, wherein the reflecting mirror is separable into two or more on the optical axis of the reflecting mirror with the perpendicular line at the opening of the reflecting mirror as the axis of rotation. 3. The illumination device according to claim 1, wherein the reflecting mirror can be separated into two or more with an axis parallel to the optical axis of the reflecting mirror as a rotation axis. 4. The illuminating device according to claim 1, wherein the reflecting mirror moves in parallel to a direction perpendicular to the optical axis of the reflecting mirror and can be separated into two or more. 5. The illuminating device according to claim 1, wherein the reflecting mirror moves in the same direction as the optical axis of the reflecting mirror and can be separated into two or more. 6. The illumination device according to claim 1, wherein the reflecting mirror is movable in a direction other than the direction perpendicular to or the same as the optical axis of the reflecting mirror and can be separated into two or more. 7. The illumination device according to claim 1, wherein the light source is detachable from the reflecting mirror.