JP2010129350A - Light source device for projector apparatus, and projector apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device for a projector apparatus advantageous in effective cooling of a lamp, and to provide a projector apparatus. <P>SOLUTION: Air is blown into a wind guide member 96 from the front. Air introduced through a first flow passage forming opening 90A forms an air flow of cooling air which flows toward a connection part 7004. Air introduced through a second flow passage forming opening 90B forms an air flow of cooling air which flows toward a point within a shaft part 7002B located inside a skirt part 82, in which a sealing metal foil 74B is connected to a lead wire 76B. Air introduced through a third flow passage forming opening 90C forms an air flow of cooling air which flows to a point where an end part of the lead wire 76B protruding from the shaft part 7002B located inside the skirt part 82 is connected to a feed member 78B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a light source device for a projector device and a projector device.

The light from the light source device is separated into red, green, and blue light, each of the separated light is modulated by image information using three light modulators, and the light emitted from each light modulator is synthesized. Projectors that project onto a screen.
As the light source device, there is provided a light source device including a lamp device having a lamp and a reflector, and a housing for housing the lamp device.
In this case, a high-output discharge lamp is used as the lamp, and this type of lamp becomes hot during operation, so cooling by applying cooling air to the lamp ensures the brightness of the lamp, Further, it is necessary for extending the life of the lamp.
Thus, a light source device has been proposed in which a housing is provided with intake and exhaust vents for introducing cooling air inside the reflector (Patent Document 1).
JP 2002-216536 A

However, it is necessary to cool the lamp more effectively in order to further ensure the brightness of the lamp and extend its life.
Therefore, there is a demand for more effective cooling of a portion of the lamp that is particularly preferred to be cooled with a simple structure.
The present invention has been made in view of such circumstances, and an object thereof is to provide a light source device for a projector device and a projector device that are advantageous in effectively cooling a lamp.

In order to achieve the above-described object, a light source device for a projector device according to the present invention includes a lamp device and a housing that houses the lamp device, and the lamp device includes a lamp and a reflector, A discharge vessel made of a glass material having a pair of shaft portions and a connection portion in which the ends of the pair of shaft portions are connected to each other and a sealed space is formed in the sealed space. A pair of electrodes that emit light by electric discharge, two sealing metal foils that are electrically connected to the pair of electrodes and embedded in the pair of shafts, respectively, and one end of the two metal foils inside the shaft Two lead wires respectively connected to the sealing metal foil and having the other end exposed to the outside of the pair of shaft portions, and the other end of the two lead wires respectively Target Two reflectors connected to each other, and the reflector includes a neck portion that accommodates and holds one shaft portion of the pair of shaft portions, and the connection portion and the pair of shaft portions from the neck portion. A skirt portion extending so as to surround the other shaft portion and having a reflection surface formed on the inner surface thereof, the housing cooling the lamp, and an inlet for introducing cooling air toward the lamp And a discharge port for discharging discharge air, which is the cooling air, to the outside of the housing, and the introduction port is for forming a first flow path that creates an air flow of the cooling air toward the connection portion. An opening, a second flow path forming opening for creating an air flow of the cooling air toward the location where the sealing metal foil and the lead wire are connected inside the other shaft portion, and the other shaft portion. The end of the lead wire exposed from the shaft and the end And a third flow path forming openings to make the air flow of the cooling air toward the portion where the conductive member is connected.
The projector device according to the present invention includes a light source device, a separation unit that separates light from the light source device into a plurality of lights having different wavelength regions, and an image that is provided for each of the lights separated by the separation unit. A plurality of light modulators that modulate and emit light according to information, a light combining unit that combines light from the plurality of light modulators, and a projection optical system that projects light emitted from the light combining unit onto a screen The light source device includes a lamp device and a housing that houses the lamp device, the lamp device includes a lamp and a reflector, and the lamp includes a pair of shaft portions and the pair of shaft portions. A discharge container made of a glass material having a connection portion in which a sealed space is formed inside, a pair of electrodes that are arranged so as to face each other in the sealed space and emit light by discharge, and the pair Two sealing metal foils each electrically connected to the electrodes and embedded in the pair of shaft portions, respectively, one end electrically connected to the two sealing metal foils inside the shaft portions, and Two lead wires each provided so that the other end is exposed to the outside of the pair of shaft portions, and two feeding members electrically connected to the other ends of the two lead wires, respectively. The reflector extends from the neck portion so as to surround the other shaft portion of the connection portion and the pair of shaft portions. The neck portion accommodates and holds one shaft portion of the pair of shaft portions. And a skirt portion having a reflective surface formed on the inner surface, wherein the housing has an inlet for introducing cooling air toward the lamp, and discharge air which is the cooling air after cooling the lamp To the outside of the housing A discharge port, and the introduction port includes a first flow path forming opening that creates an air flow of the cooling air toward the connection portion, and the sealing metal foil and the inside of the other shaft portion. A second flow path forming opening that creates an air flow of the cooling air toward a place where the lead wire is connected, and an end portion of the lead wire exposed from the other shaft portion and the power supply member are connected. And a third flow path forming opening that creates an air flow of the cooling air toward the formed portion.

  According to the present invention, the air flow of the cooling air is guided to the three locations where the first, second, and third flow passage forming openings are preferably cooled with particular emphasis. This is advantageous for cooling.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram illustrating a configuration of a projector device 10 according to the present embodiment, and FIG. 2 is an explanatory diagram illustrating a configuration of a main part of the projector device 10 according to the present embodiment.
As shown in FIG. 1, the projector device 10 includes a light source device 60, an illumination optical system 12, a separation unit 14, three light modulators 16 </ b> R, 16 </ b> G, and 16 </ b> B, a light combining unit 18, and a retardation film 20. The projection optical system 23 is included, and the present invention is applied to the light source device 60.
The projector device 10 further includes three incident side polarizing plates 15R, 15G, and 15B and three outgoing side polarizing plates 22R, 22G, and 22B.
The light source device 12, the separation unit 14, the incident-side polarizing plates 15R, 15G, and 15B, the three light modulators 16R, 16G, and 16B, the light combining unit 18, the output-side polarizing plates 22R, 22G, and 22B, and the projection optical system 23 Is attached to a frame (not shown) via a conventionally known attachment member.

(Illumination optical system 12)
The illumination optical system 12 emits light from the light source device 60 described later toward the separation unit 14.
The illumination optical system 12 includes a lens 24, a UV cut filter 26, a fly-eye lens 28, a PS conversion element 30, a condenser lens 45, and the like.
The lens 24 is disposed in front of the light source device 60, and converts the emitted light reflected by the reflection surface 84 (FIG. 3) of the light source device 60 into parallel light and emits it. In the present embodiment, the lens 24 is a concave lens.
The UV cut filter 26 is provided in front of the light source device 60 and prevents passage of ultraviolet rays emitted from the light source device 60.
The fly-eye lens 28 is provided in front of the UV cut filter 26, and uniformizes the illuminance distribution of the light transmitted through the UV cut filter 26, so that the effective area of each of the light modulators 16R, 16G, and 16B is uniform. Illuminate.
In the present embodiment, a plurality of fly-eye lenses 28 are provided.
The PS conversion element 30 aligns the polarization direction of the light guided by the fly-eye lens 28 in a predetermined direction. Specifically, the S wave (S-polarized linearly polarized light) of the polarization component of the light is transmitted as it is. The polarization component other than the S wave is converted into the S wave and transmitted.

(Separator 14)
The separation unit 14 separates the light from the illumination optical system 12 into R (red) light, G (green) light, and B (blue) light having different wavelength regions, in other words, the illumination optical system. 12 is separated into red, green, and blue light having different wavelength regions.
The separation unit 14 includes first, second, and third dichroic filters 32, 34, and 35, and first, second, and third reflection mirrors 36, 38, and 40.
In the present embodiment, the first and second dichroic filters 34 and 36 are configured as dichroic mirrors, and the third dichroic filter 35 is configured by a dichroic coat formed on an output surface of a condenser lens 46 described later. Yes.

The first dichroic filter 32 selectively reflects the light in the blue wavelength region out of the light guided from the illumination optical system 12, and the remaining light excluding the blue wavelength region, in other words, green and red light. Transmits light including the wavelength region.
The second dichroic filter 34 selectively reflects light in the green wavelength region out of the light transmitted through the first dichroic filter 32 and passes it to the green channel light modulator 16G via the green channel incident side polarizing plate 15G. It guides and transmits the remaining light including light in the red wavelength region.
The third dichroic filter 35 selectively transmits light in the red wavelength region among the light transmitted through the second dichroic filter 34.

The first reflecting mirror 36 reflects the light B in the blue wavelength region separated by the first dichroic filter 32 and guides it to the blue channel light modulator 16B via a blue channel incident side polarizing plate 15B described later. It is.
The second reflecting mirror 38 reflects light including light in the red wavelength region separated by the second dichroic filter 34 and guides it to the third reflecting mirror 40.
The third reflection mirror 40 modulates red channel light, which is guided by the second reflection mirror 38, through the third dichroic filter 35 and a red channel incident side polarizing plate 15R described later. It leads to the container 16R.
In the figure, reference numerals 42 and 44 denote relay lenses for correcting the optical path length of the light R, and reference numerals 46, 48, and 50 denote condenser lenses that converge the light R, light G, and light B, respectively.
The separation unit 14 is only required to separate light from the illumination optical system 12 into red, green, and blue light, and is not limited to the above-described configuration, and various conventionally known configurations can be employed. .

(Optical modulators 16R, 16G, 16B)
Each of the optical modulators 16R, 16G, and 16B is provided for each of the light R, light G, and light B separated by the separation unit 14.
That is, a red channel light modulator 16R is provided for the red light R, a green channel light modulator 16G is provided for the green light G, and a blue channel light modulation is provided for the blue light B. A container 16B is provided.
Each of the optical modulators 16R, 16G, and 16B converts the polarization state of the light guided through the incident side polarizing plates 15R, 15G, and 15B according to the image information and transmits it, in other words, changes the polarization state of the light. The light is adjusted according to the image information and transmitted, thereby modulating the light according to the image information.
More specifically, each of the optical modulators 16R, 16G, and 16B displays image information of three colors of red, green, and blue.
Each of the optical modulators 16R, 16G, and 16B is applied with a video signal of a color corresponding to the incident light, and converts the polarization direction of the incident light according to the video signal and transmits it.
In other words, each of the optical modulators 16R, 16G, and 16B converts the incident light from S-polarized light to P-polarized light and outputs the modulated light.
Each optical modulator 16R, 16G, 16B converts the polarization direction of incident light from S-polarized light to P-polarized light and transmits it when the input video signal is white (in the brightest case). Further, each of the optical modulators 16R, 16G, and 16B transmits the polarization direction of incident light with S polarization when the input video signal is black (in the darkest case).
In the present embodiment, each of the optical modulators 16R, 16G, and 16B is composed of a transmissive liquid crystal panel.
Each of the light modulators 16R, 16G, and 16B is not limited to the transmissive liquid crystal panel, and any light modulator may be used as long as the light is modulated by image information and emitted.
Therefore, various conventionally known spatial modulators such as a reflective liquid crystal panel and a DMD (Digital Micro mirror Device) using a number of minute reflecting mirrors can be used as each light modulator. is there.

(Each incident side polarizing plate 15R, 15G, 15B)
The incident-side polarizing plates 15R, 15G, and 15B are provided between the separation unit 14 and the optical modulator corresponding to the optical modulators 16R, 16G, and 16B, and the light R and light separated by the separation unit 14 are provided. The polarization components of G and light B are aligned with the S wave.
That is, a red channel incident side polarizing plate 15R is provided corresponding to the red channel light modulator 16R, a green channel incident side polarizing plate 15G is provided corresponding to the green channel light modulator 16G, and a blue channel light modulator 16B. A blue channel incident side polarizing plate 15B is provided corresponding to the above.
The polarization components of the light R, light G, and light B are aligned in the S wave by the PS conversion element 30, but the light R, light G, and light B pass through the mirrors and lenses that form the separation unit 14. The polarization component of this is disturbed and includes a non-S wave.
Therefore, by using the respective incident-side polarizing plates 15R, 15G, and 15B, the disturbance of the polarization components of the light R, light G, and light B is removed, and the S waves are aligned.

(Exit-side polarizing plates 22R, 22G, 22B)
Each of the exit-side polarizing plates 22R, 22G, and 22B transmits the P wave among the polarization components of the light R, light G, and light B emitted from the light modulators 16R, 16G, and 16B, and blocks the other transmissions. It absorbs the polarization component that should be.
That is, a red channel output side polarizing plate 22R is provided corresponding to the red channel light modulator 16R, a green channel output side polarizing plate 22G is provided corresponding to the green channel light modulator 16G, and the blue channel light modulator 16B. A blue channel emitting side polarizing plate 22B is provided corresponding to the above.
The red channel exit side polarizing plate 22R is disposed in a state where spaces S1 and S2 are secured between the red channel light modulator 16R and the first incident surface 1802, respectively. In the present embodiment, a retardation film described later is provided. 20 facing each other through a space S2.
The green channel emitting side polarizing plate 22G is disposed in a state where spaces S1 and S2 are secured between the green channel light modulator 16G and the second incident surface 1804, respectively.
The blue channel exit side polarizing plate 22B is disposed in a state where spaces S1 and S2 are secured between the blue channel light modulator 16B and the third incident surface 1806, respectively, and in the present embodiment, a retardation film described later. 20 facing each other through a space S2.

(Photosynthesis unit 18)
In the present embodiment, the light combining unit 18 includes a light combining prism 18A as shown in FIG.
The light combining prism 18A includes first, second, and third incident surfaces 1802, 1804, and 1806, first and second dichroic mirror films 1810 and 1812, and an exit surface 1808.
The first and third entrance surfaces 1802 and 1806 are parallel to each other, and the second entrance surface 1804 and the exit surface 1808 are orthogonal to and parallel to the first and third entrance surfaces 1802 and 1806.
The first and second dichroic mirror films 1810 and 1812 are orthogonal to each other and intersect the first, second, and third incident surfaces 1802, 1804, 1806, and the exit surface 1808 at 45 degrees. .
The light R transmitted from the red channel light modulator 16R is incident on the first incident surface 1802.
The light G transmitted from the green channel light modulator 16G is incident on the second incident surface 1804.
The light B transmitted from the blue channel light modulator 16B is incident on the third incident surface 1806.
The first and second dichroic mirror films 1610 and 1612 synthesize the light R, light G, and light B by reflecting or transmitting the light for each wavelength region.
Specifically, the first dichroic mirror film 1610 transmits the P wave regardless of the wavelength, reflects only the light in the red wavelength region of the S wave, and removes the light other than the red wavelength region in the S wave. To Penetrate.
The second dichroic mirror film 1612 transmits the P wave regardless of the wavelength, reflects only the light in the blue wavelength region of the S wave, and transmits the light other than the blue wavelength region in the S wave.
The emission surface 1808 emits light synthesized by the first and second dichroic mirror films 1810 and 1812.

(Phase difference film 20)
The retardation film 20 is attached to at least one of the first, second, and third incident surfaces 1802, 1804, and 1806 to convert the polarization direction of linearly polarized light.
The retardation film 20 is attached to the incident surface by using, for example, an adhesive layer formed on the back surface of the retardation film 20.
As a configuration of such a retardation film 20, for example, conventionally known is one in which TAC (triacetyl cellulose) and PVA (polyvinyl alcohol) are laminated and PET (polyethylene terephthalate) as a protective film is formed on the surface. Various configurations can be adopted.
The retardation film 20 is affixed to the two incident surfaces of the first and third incident surfaces 1802 and 1806, and converts P-polarized light into S-polarized light.

(Projection optical system 23)
The projection optical system 23 forms an image on the screen S by irradiating the screen S with the light emitted from the light synthesis unit 18 (from the emission surface 1808 of the light synthesis prism 18A).

Next, the operation will be described.
The light emitted from the illumination optical system 12 is separated into light R, light G, and light B by the separation unit 14.
The light R is guided to the red channel light modulator 16R through the first incident side polarizing plate 15R and modulated, and then reaches the retardation film 20 through the red channel emitting side polarizing plate 22R.
The light R is guided from the first incident surface 1802 to the first and second dichroic mirrors 1810 and 1812 after the polarization direction of the linearly polarized light is converted from P-polarized light to S-polarized light by the retardation film 20.
Therefore, the light R as the S wave is reflected by the first dichroic mirror film 1810 and is guided from the exit surface 1808 to the projection optical system 23 by passing through the second dichroic mirror film 1812.

The light G is guided to the green channel light modulator 16G via the second incident side polarization plate 15G and modulated, and then the polarization direction is aligned with the P wave via the green channel emission side polarization plate 22G. The light is guided from the second incident surface 1804 to the first and second dichroic mirrors 1810 and 1812.
Accordingly, the light G as the P wave is guided from the exit surface 1808 to the projection optical system 23 by passing through both the first and second dichroic mirrors 1810 and 1812.

The light B is guided and modulated by the blue channel light modulator 16B via the blue channel incident side polarizing plate 15B, and then reaches the retardation film 20 via the blue channel emitting side polarizing plate 22B.
The light B is guided from the third incident surface 1806 to the first and second dichroic mirrors 1810 and 1812 after the polarization direction of the linearly polarized light is converted from P-polarized light to S-polarized light by the retardation film 20.
Therefore, the light B as the S wave is reflected by the second dichroic mirror film 1812 and is transmitted through the first dichroic mirror film 1810 to be guided from the emission surface 1808 to the projection optical system 23.

(Light source device 60)
Next, the light source device 60 which is the gist of the present invention will be described.
FIG. 3 is an explanatory diagram showing the configuration of the light source device 60.
4 is a cross-sectional view of the lamp device 62, and FIG. 5 is a view as seen from the direction of arrow A in FIG.

As shown in FIG. 3, the light source device 60 includes a lamp device 62 and a housing 64.
The lamp device 62 includes a lamp 66 and a reflector 68.
The reflector 68 has a neck portion 80, a skirt portion 82, and a reflective surface 84.

(Lamp 66)
As shown in FIG. 3, the lamp 66 includes a discharge vessel 70, a pair of electrodes 72A and 72B, two sealing metal foils 74A and 74B, two lead wires 76A and 76B, two power feeding members 78A, 78B.
In the present embodiment, the lamp 66 is composed of an ultra high pressure mercury lamp.

The discharge vessel 70 is made of a glass material, and includes a pair of shaft portions 7002A and 7002B, and a connection portion 7004 in which the ends of the pair of shaft portions 7002 are connected and a sealed space 7006 is formed therein.
A gas such as argon gas or halogen gas is enclosed in the sealed space 7006 together with mercury.
As a glass material constituting the discharge vessel 70, various conventionally known glass materials such as quartz glass can be employed.

One shaft portion 7002A of the pair of shaft portions 7002A and 7002B is inserted into the neck portion 80 of the reflector 68 and is held by the neck portion 80.
The other shaft portion 7002B and the connection portion 7004 of the pair of shaft portions 7002A and 7002B are disposed inside the skirt portion 82.
The skirt portion 82 extends from the neck portion 80 so as to surround the connecting portion 7004 and the other shaft portion 7002B.
A reflection surface 84 is formed on the inner surface of the skirt portion 82 to reflect light emitted from the pair of electrodes 72A and 72B in a direction opposite to the neck portion 80, that is, toward the front of the skirt portion 82.

The pair of electrodes 72A and 72B are arranged so as to face each other on the same axis in the sealed space 7006 and emit light by electric discharge.
More specifically, each of the electrodes 72A and 72B includes an electrode shaft 7202 and an electrode main body 7204 provided at an end of the electrode shaft 7202, and the electrode shaft 7202 is embedded in the pair of shaft portions 7002A and 7002B. In addition, the electrode main bodies 7204 are arranged so as to face each other in the sealed space 7006.
As a material constituting the pair of electrodes 72A and 72B, various conventionally known metal materials such as tungsten can be adopted.

The two sealing metal foils 74A and 74B are electrically connected to the pair of electrodes 72A and 72B, respectively, and are embedded in the pair of shaft portions 7002A and 7002B, respectively.
The two sealing metal foils 74 </ b> A and 74 </ b> B are narrow and extend in a strip shape, and are embedded in the shaft portions 7002 </ b> A and 7002 </ b> B with their longitudinal directions parallel to the longitudinal direction of the shaft portion 7002.
The electrode shaft 7002 is joined to one end in the longitudinal direction of the two sealing metal foils 74A and 74B by resistance welding, whereby the two sealing metal foils 74A and 74B are electrically connected to the electrodes 72A and 72B, respectively. ing.

  One end of each of the two lead wires 76A and 76B is electrically connected to the other end in the longitudinal direction of the two sealing metal foils 74A and 74B inside the shaft portions 7002A and 7002B, respectively, and the other end is Each of the shaft portions 7002A and 7002B is provided so as to protrude outside.

Of the two power supply members 78A and 78B, one power supply member 78A is disposed behind the neck portion 80, and the other power supply member 78B is disposed in front of the skirt portion 82.
More specifically, a base 71 that is electrically connected to the lead wire 76 </ b> A is attached to the end of the shaft portion 7002 </ b> A embedded in the neck portion 80. One power supply member 78A is provided on the base 71, and one power supply member 78A and one lead wire 76A are electrically connected.
Of the two power supply members 78A and 78B, the other power supply member 78B has an elongated shaft shape and is electrically connected to the end of the other lead wire 76B protruding forward from the shaft portion 7002B by resistance welding. .

According to such a lamp 66, when the two power supply members 78A and 78B are connected to a power supply device (not shown) and a predetermined voltage is applied from the power supply device to the pair of electrodes 72A and 72B, the two electrode main bodies 7204 are provided. Discharge occurs between them, and the sealed space 7006 becomes high temperature. Thus, when mercury is vaporized and the sealed space 7006 reaches a predetermined mercury vapor pressure, arc discharge occurs between the two electrode bodies 7204, and white light is generated.
In addition, it is preferable to cool the lamp 66 intensively in the following three places in order to efficiently cool the lamp 66. Therefore, the luminance of the lamp 66 is secured and the life of the lamp 66 is extended. This is the preferred location.
That is, the three locations are the connection portion 7004, the location where the sealing metal foil 74B and the lead wire 76B are connected in the shaft portion 7002B, the end portion of the lead wire 76B protruding from the shaft portion 7002B, and the power supply member 78B. Are connected to each other.

In the present embodiment, as shown in FIGS. 4 and 5, the skirt portion 82 is located at both ends in the radial direction centered on the central axis of the reflector 68, and the portions of the reflective surfaces 84 facing each other are the skirt portions 82. Two cutouts 86 are formed that are cut out with portion 8202.
As shown in FIG. 4, the outlines of the two notches 86 have an arcuate curve or a curve extending along the elliptical circumference.
In the present embodiment, the reflector 68 is arranged with the two notches 88 facing left and right.

(Housing 64)
As shown in FIG. 3, the housing 64 accommodates the lamp device 62.
More specifically, the housing 64 has a cylindrical shape having left and right widths sufficient to accommodate the reflector 68, top and bottom height, and a length parallel to the central axis of the reflector 68.
The housing 64 includes a rear wall 6402 that faces the neck portion 80 of the reflector 68, a light emission opening 6406 that faces the reflection surface 84 of the skirt portion 82, and a peripheral wall that connects the periphery of the light emission opening 6406 and the rear wall 6402. 6404.
The reflector 68 is attached to the peripheral wall 6404 via an attachment member (not shown).
The light emitting opening 6406 is closed by a transparent panel 88 that transmits light.

An introduction port 90 and a discharge port 92 are provided in the housing 64.
The inlet 90 introduces cooling air toward the lamp 66.
The discharge port 92 discharges the discharge air after cooling the lamp 66 out of the housing 64.
In the present embodiment, the introduction port 90 and the discharge port 92 are located in front of the skirt portion 82 of the reflector 68 and at two locations where the circumferential wall 6404 faces in the width direction, that is, on the left and right sides of the circumferential wall 6404. Each is provided.

In the present embodiment, a mounting opening 93 is formed on the side portion of the peripheral wall 6404, and the mounting opening 93 is formed at a position of the peripheral wall 6404 in front of one of the two notches 86 of the reflector 68. Is formed.
In addition, the space inside the housing 64 in front of the reflector 68 and the space outside the housing 64 communicate with each other through one notch 86 and the introduction port 90 and the other notch 86 and the discharge port 92.

(Air guide member 94)
6 is a perspective view of the air guide member 94, FIGS. 7 and 8 are perspective views of the holder 96, FIG. 9 is a side view of the holder 96, FIG. 10 is a view from the direction of arrow A in FIG. 12 is a perspective view of the plate member 98, FIG. 13 is a plan view of the plate member 98, FIG. 14 is a view taken in the direction of arrow A in FIG. 13, and FIG. 15 is a view taken in the direction of arrow B in FIG.

The air guide member 94 guides air outside the housing 64 into the housing 64 as cooling air, and the air guide member 94 is attached to the housing 64 so as to surround the attachment opening 93.
An introduction port 90 is provided at a location of the air guide member 94 located in the attachment opening 93.

The introduction port 90 has first, second, and third flow path forming openings 90A, 90B, and 90C.
The first flow passage forming opening 90 </ b> A creates an air flow of cooling air toward the connection portion 7004.
The second flow path forming opening 90B creates an air flow of cooling air toward the portion where the sealing metal foil 74B and the lead wire 76B are connected inside the shaft portion 7002B located inside the skirt portion 82. Is.
The third flow path forming opening 90 </ b> C allows an air flow of the cooling air toward the portion where the end of the lead wire 76 </ b> B protruding from the shaft portion 7002 </ b> B located inside the skirt portion 82 and the power supply member 78 </ b> B are connected. It is what you make.

As shown in FIG. 6, the air guide member 94 includes a holder 96 and a plate member 98.
The holder 96 has a rectangular bottom wall 96A and two side walls 96B each standing from two long sides of the bottom wall 96A, and a space is formed inside by the bottom wall 96A and the two side walls 96B. Yes.
As shown in FIG. 7 and FIG. 9, when one of the longitudinal directions of the bottom wall 96A is the front and the other is the rear, the upper surface of the bottom wall 96A is displaced first upward from the front to the rear. An inclined surface 9602 is formed.
In the present embodiment, the air guide path 97 is formed by the first inclined surface 9602 and the side walls 96B on both sides.

As shown in FIG. 11, a mounting surface 9604 is formed across the upper rear end of the bottom wall 96 </ b> A and the upper ends of the side walls 96 </ b> B on both sides, and the mounting surface 9604 extends over the entire length of the upper portion of the holder 96.
As shown in FIG. 10, a front end surface 9606 is formed across the front end of the bottom wall 96 </ b> A and the front ends of the side walls 96 </ b> B on both sides, and the front end surface 9606 extends over the entire length of the front surface of the holder 96. Therefore, the inside of the front end face 9606 serves as an air inlet 9407 that guides air outside the housing 64 to the inside of the air guide member 94.

As shown in FIGS. 8, 9, and 11, an air guide piece 9608 that protrudes upward and stabilizes the flow of the cooling air flow at the location of the attachment surface 9604 located behind the first inclined surface 9602. Is formed.
A second inclined surface 9610 is formed in the upper part of the air guide piece 9608 and is displaced upward as it goes rearward.
As shown in FIG. 11, the air guide piece 9608 has a curved outline in plan view so as to engage with the edge of the notch 88 of the reflector 68 without a gap.
As shown in FIGS. 9 and 11, mounting portions 9612 for mounting the plate member 98 extend in the front-rear direction at locations near the air guide path 97 of the mounting surface 9604 located on the side walls 96B on both sides. Being formed.
As shown in FIGS. 9 and 11, an insertion groove 9614 in which the front part of the plate member 98 is inserted and held is formed in the front part of the side walls 96 </ b> B on both sides so as to extend vertically.
Further, as shown in FIG. 11, attachment pieces 9620 each having a screw insertion hole for attaching the holder 96 to the housing 64 are provided on the outer surfaces of the two side walls 96 </ b> B.

As shown in FIGS. 6 to 15, the plate member 98 is formed by bending a rectangular plate-shaped sheet metal at a right angle at an intermediate portion in the longitudinal direction.
As shown in FIGS. 6, 12, and 15, a large number of air intake small holes are formed in the front portion 9802 in the longitudinal direction of the plate member 98.
6 and 15 show only a part of the air intake small holes for simplification of the drawing, but the small holes are formed in the entire front portion 9802 as shown in FIG. Yes.
The front portion 9802 is inserted and held in the insertion groove 9614 of the holder 96 described above.
As shown in FIGS. 6, 12, and 13, the longitudinal rear portion 9804 of the plate member 98 has a rectangular notch 98 </ b> A, a rectangular second flow path forming opening 90 </ b> B, and a rectangular shape. The third flow path forming openings 90C are formed so as to be arranged at intervals in the longitudinal direction.
Bending pieces 9805 are formed on both sides of the rear portion 9804.
The rear portion 9804 is placed on the placement portions on the side walls on both sides, and the bent piece 9805 contacts the outer surface of the placement portion, and the bent piece 9805 prevents the plate member 98 from moving in the width direction.
In this embodiment, as shown in FIGS. 6, 12, and 14, the third flow path forming opening 90 </ b> C is provided with a baffle piece 9810 that stabilizes the flow of the cooling air flow. Yes.
The air guide piece 9810 is provided at the front edge portion of the third flow path forming opening 90C, and is inclined so as to gradually displace upward as it reaches the rear.

The rear portion 9804 of the plate member 98 is placed on the placement portion 9612 of the holder 96 and both sides of the front portion 9802 are inserted into the two insertion grooves 9614 of the holder 96 so that the plate member 98 is mounted on the holder 96 and guided. The wind member 96 is assembled.
The air guide member 96 assembled with the plate member 98 is attached to the housing 64 as follows.
The notch 98A, the second flow path forming opening 90B, and the third flow path forming opening 90C of the air guide member 96 face the mounting opening 93 of the housing 64, and the air guide piece 9608 is in the notch 86. insert. In this state, the screw inserted into the screw insertion hole of the attachment piece 9620 is screwed into the screw hole of the housing 64.

  In the present embodiment, as shown in FIG. 3, the first flow path forming opening 90A has a notch 98A and an air guide piece 9608 (more specifically, the second inclined surface 9610 of the air guide piece 9608). The first flow path forming opening 90A and the third flow path forming opening 90C are provided with air guide pieces 9608 and 9810, respectively.

Next, the operation will be described.
As indicated by an arrow F 0 in FIG. 3, when air is sent from the front to the air guide member 96, the air passes through the front portion 9802 and passes through the air guide path 97 to form the first, second, and third flow paths. It is introduced into the housing 64 from the forming openings 90A, 90B, 90C.
That is, the air introduced from the first flow path forming opening 90A becomes an air flow of cooling air toward the connection portion 7004 as indicated by an arrow F1.
The air introduced from the first flow path forming opening 90A is effectively guided to the connection portion 7004, and the amount of air hitting the connection portion 7004 is improved.
In addition, the air introduced from the second flow path forming opening 90B has the sealing metal foil 74B and the lead wire 76B inside the shaft portion 7002B located inside the skirt portion 82, as indicated by an arrow F2. It becomes the air flow of the cooling air toward the connected location.
The air introduced from the second flow path forming opening 90b is effective at the location where the sealing metal foil 74B and the lead wire 76B are connected inside the shaft portion 7002B located inside the skirt portion 82. Therefore, the air volume hitting the portion is improved.
Further, the air introduced from the third flow path forming opening 90C is, as indicated by the arrow F3, the end of the lead wire 76B protruding from the shaft portion 7002B located inside the skirt portion 82, the power supply member 78B, It becomes the air flow of the cooling air which goes to the location where is connected.
The air introduced from the third flow path forming opening 90C is effectively guided to a place where the end of the lead wire 76B and the power supply member 78B are connected, and the end of the lead wire 76B and the power supply member. Improvement of the air volume which hits the location where 78B was connected is achieved.
As a result, the lamp 66 is cooled by guiding the air flow of the cooling air to three places of the lamp 66 to be cooled with priority.

According to the present embodiment, the first, second, and third flow path forming openings 90A, 90B, and 90C are provided in a simple configuration such that the lamp 66 is particularly preferably cooled at three points. Since the air flow of the cooling air is guided, it is advantageous in effectively cooling the lamp 66.
Therefore, effective cooling of the lamp 66 is advantageous in securing the luminance of the lamp 66 and extending the life of the lamp 66, and the quality of the image projected by the projector device 10 can be ensured over a long period of time. This is advantageous in increasing the commercial value of the device 10.

In this embodiment, the case where the air guide pieces 9608 and 9810 are provided in the first and third flow path forming openings 90A and 90C has been described in order to increase the cooling efficiency. At least one of the flow path forming openings 90A, 90B, and 90C may include an air guide piece provided at the edge of the opening.
For example, as shown in FIG. 16, an air guide piece 9820 may be further provided in the first flow path forming opening 90A.
That is, the air guide piece 9820 is provided at the front edge portion of the notch 98A, and is inclined so as to gradually displace upward as it goes rearward.
When the air guide piece 9820 is provided, the air introduced from the first flow path forming opening 90A is guided to both the air guide pieces 9608 and 9820, thereby being more effectively guided by the connection portion 7004. This is advantageous in improving the air volume hitting the connection portion 7004.

(First comparative example)
Next, a first comparative example will be described.
FIG. 19 is an explanatory diagram showing the configuration of the light source device 60 in the first comparative example. In the following comparative examples, parts and members corresponding to or similar to those of the embodiment will be described with the same reference numerals. .
In the first comparative example, the plate member 98 is formed by only the front portion 9802 and the rear portion 9804 is not provided.
Therefore, when air is sent into the air guide member 96 from the front, the air passes through the front portion 9802 and is introduced into the housing 64 from the introduction port 90 through the air guide path 97.

FIG. 17 is an explanatory diagram illustrating the airflow rate of the airflow in the light source device 60 of the embodiment, and FIG. 18 is an explanatory diagram illustrating the airflow rate of the airflow in the light source device 60 of the first comparative example.
In FIGS. 17 and 18, reference symbols a, b, and c are lines indicating the air volume distribution, the reference symbol a indicates a high air volume portion, the reference symbol b indicates a medium air flow portion, and the reference symbol c indicates a low air volume portion. .
In the comparative example shown in FIG. 18, the air introduced from the introduction port 90 is the place where the sealing metal foil 74 </ b> B and the lead wire 76 </ b> B are connected inside the connection part 7004 and the shaft part 7002 </ b> B among the above three places. However, it is not effectively led to the place where the end of the lead wire 76B and the power supply member 78B are connected.
On the other hand, in the embodiment shown in FIG. 17, the air introduced from the first, second, and third flow path forming openings 90 </ b> A, 90 </ b> B, 90 </ b> C cools the lamp 66 in a particularly focused manner. It is effectively guided to three preferable locations.
Therefore, in the embodiment, it is advantageous in effectively cooling the three places where it is preferable to intensively cool compared to the first comparative example.

(Second comparative example)
Next, a second comparative example will be described.
FIG. 20 is an explanatory diagram showing the configuration of the light source device 60 in the second comparative example.
In the second comparative example, a protruding wall 96 protruding upward is formed on the first inclined surface 9602 of the holder 96 in the first comparative example, in other words, a protrusion that changes the direction of air flow in the air guide path 97. A wall 96 is provided.
The protruding wall 96 extends in the width direction in the middle of the first inclined surface 9602 in the front-rear direction, and a gap is formed between both ends in the width direction and the side walls 96B on both sides of the holder 96 (FIG. 10). .
Accordingly, the air guide path 97 is formed by the first inclined surface 9602, the side walls 96B on both sides, and the protruding walls 96.
By providing such a projecting wall 96, when air is sent to the air guide member 96 from the front, a part of the air passes through the front portion 9802 and is guided upward by the projecting wall 96 and is introduced from the introduction port 90 to the housing 64. Introduced inside. The remaining air passes through the gap between the side wall 96 </ b> B and the protruding wall 96 on both sides and is introduced into the housing 64 from the introduction port 90.
Therefore, the air guided upward by the protruding wall 96 is guided to a place where the end of the lead wire 76B and the power feeding member 78B are connected.
A comparison of the temperature measurement result at the location where the end of the lead wire 76B and the power feeding member 78B are connected between the embodiment and the second comparative example is as follows.
Embodiment: 340 degrees Second comparative example: 400 degrees Therefore, in the embodiment, the portion where the end portion of the lead wire 76B and the power feeding member 78B are connected is more effective than the second comparative example. It is advantageous for cooling.

(Third comparative example)
Next, a third comparative example will be described.
FIG. 21 is an explanatory diagram showing the configuration of the light source device 60 in the third comparative example.
In the third comparative example, the front portion 9802 of the plate member 98 in the embodiment is omitted, and the plate member 98 is configured by only the rear portion 9804.
That is, an air inlet 9407 having the same area as the rear portion 9804 of the plate member 98 is formed inside the front end surface 9606 (FIG. 6) of the holder 96.
A comparison of the temperature measurement result of the connecting portion 7004 between the embodiment and the third comparative example is as follows.
This embodiment: 950 degrees Third embodiment: 900 degrees Comparing the temperature measurement result of the place where the end of the lead wire 76B and the power supply member 78B are connected in the embodiment and the third comparative example Is as follows.
This embodiment: 340 degrees Third embodiment: 380 degrees Therefore, although this embodiment slightly reduces the effect of cooling the connecting portion 7004 compared to the third comparative example, the lead wire 76B It turns out that the effect which cools the location where the edge part and the electric power feeding member 78B were connected is high.
This is because air is rectified by a large number of air intake small holes formed in the front portion 9802 of the plate member 98, whereby the air introduced from the second flow path forming opening 90 </ b> B is supplied to the lamp 66. It is considered that the lead wire 76B is effectively guided to a place where the end portion of the lead wire 76B and the power supply member 78B are connected.

It is explanatory drawing which shows the structure of the projector apparatus 10 of this Embodiment. It is explanatory drawing which shows the structure of the principal part of the projector apparatus 10 of this Embodiment. 4 is an explanatory diagram showing a configuration of a light source device 60. FIG. It is sectional drawing of the lamp apparatus 62. FIG. It is A arrow directional view of FIG. It is a perspective view of the air guide member 94. FIG. 7 is a perspective view of a holder 96. FIG. 7 is a perspective view of a holder 96. FIG. 7 is a side view of a holder 96. FIG. It is A arrow directional view of FIG. It is a B arrow line view of FIG. 10 is a perspective view of a plate member 98. FIG. It is a top view of the plate member 98. FIG. It is A arrow directional view of FIG. It is a B arrow view of FIG. It is explanatory drawing which shows the structure of the light source device 60 which provided the air guide piece 9820 further in 90 A of 1st flow-path formation openings. It is explanatory drawing which shows the air volume of the airflow in the light source device 60 of embodiment. It is explanatory drawing which shows the air volume of the airflow in the light source device 60 of the 1st comparative example. It is explanatory drawing which shows the structure of the light source device 60 in a 1st comparative example. It is explanatory drawing which shows the structure of the light source device 60 in a 2nd comparative example. It is explanatory drawing which shows the structure of the light source device 60 in the 3rd comparative example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Projector apparatus, 12 ... Light source, 14 ... Separation part, 16R, 16G, 16B ... Light modulator, 18 ... Photosynthesis part, 23 ... Projection optical system, 60 ... Light source apparatus, 62 ... Lamp device, 64 ... housing, 66 ... lamp, 68 ... reflector, 70 ... discharge vessel, 7002A, 7002B ... shaft, 7004 ... connecting portion, 7006 ... sealed space, 72A, 72B ... electrode , 74A, 74B ... Sealing metal foil, 76A, 76B ... Lead wire, 78A, 78B ... Power feeding member, 80 ... Neck, 82 ... Skirt, 90 ... Inlet, 92 ... Discharge , 90A... First flow path forming opening, 90B... Second flow path forming opening, 90C... Third flow path forming opening.

Claims (4)

A lamp device and a housing for housing the lamp device;
The lamp device includes a lamp and a reflector,
The lamp is
A discharge vessel made of a glass material having a pair of shaft portions and a connection portion connecting between ends of the pair of shaft portions and having a sealed space formed therein;
A pair of electrodes arranged to face each other in the sealed space and emitting light by discharge;
Two sealing metal foils respectively electrically connected to the pair of electrodes and embedded in the pair of shaft portions,
Two lead wires each having one end electrically connected to the two sealing metal foils inside the shaft portion and the other end exposed to the outside of the pair of shaft portions;
Two power supply members respectively electrically connected to the other ends of the two lead wires,
The reflector is
A neck portion that accommodates and holds one of the pair of shaft portions;
A skirt portion extending from the neck portion so as to surround the other shaft portion of the connection portion and the pair of shaft portions and having a reflection surface formed on an inner surface thereof;
The housing is
An inlet for introducing cooling air toward the lamp;
A discharge port for discharging discharge air that is the cooling air after cooling the lamp to the outside of the housing;
The inlet is
A first flow path forming opening for creating an air flow of the cooling air toward the connecting portion;
A second flow path forming opening that creates an air flow of the cooling air toward the location where the sealing metal foil and the lead wire are connected inside the other shaft portion;
A third flow path forming opening that creates an air flow of the cooling air toward a place where the end portion of the lead wire exposed from the other shaft portion and the power feeding member are connected;
A light source device for a projector device. A mounting opening is formed in the housing,
An air guide member that guides air outside the housing into the housing as the cooling air is attached to the housing so as to surround the mounting opening,
The introduction port is provided at a location of the air guide member located in the mounting opening,
The light source device for a projector device according to claim 1. At least one of the first to third flow path forming openings is configured to include a baffle piece that stabilizes the flow of the cooling air provided at the edge of the opening.
The light source device for a projector device according to claim 1. A light source device;
A separation unit that separates light from the light source device into a plurality of lights having different wavelength regions;
A plurality of light modulators that are provided for each of the lights separated by the separation unit and modulate and emit the light according to image information;
A light combining unit that combines light from the plurality of light modulators;
A projection optical system that projects the light emitted from the light combining unit onto a screen;
The light source device is
A lamp device and a housing for housing the lamp device;
The lamp device includes a lamp and a reflector,
The lamp is
A discharge vessel made of a glass material having a pair of shaft portions and a connection portion connecting between ends of the pair of shaft portions and having a sealed space formed therein;
A pair of electrodes arranged to face each other in the sealed space and emitting light by discharge;
Two sealing metal foils respectively electrically connected to the pair of electrodes and embedded in the pair of shaft portions,
Two lead wires each having one end electrically connected to the two sealing metal foils inside the shaft portion and the other end exposed to the outside of the pair of shaft portions;
Two power supply members respectively electrically connected to the other ends of the two lead wires,
The reflector is
A neck portion that accommodates and holds one of the pair of shaft portions;
A skirt portion extending from the neck portion so as to surround the other shaft portion of the connection portion and the pair of shaft portions and having a reflection surface formed on an inner surface thereof;
The housing is
An inlet for introducing cooling air toward the lamp;
A discharge port for discharging discharge air that is the cooling air after cooling the lamp to the outside of the housing;
The inlet is
A first flow path forming opening for creating an air flow of the cooling air toward the connecting portion;
A second flow path forming opening that creates an air flow of the cooling air toward the location where the sealing metal foil and the lead wire are connected inside the other shaft portion;
A third flow path forming opening that creates an air flow of the cooling air toward a place where the end portion of the lead wire exposed from the other shaft portion and the power feeding member are connected;
Projector device.

Images