JP6112333B2 - Light source device and projector - Google Patents

Description

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

  2. Description of the Related Art Today, data projectors are widely used as image projection apparatuses that project a screen of a personal computer, a video image, an image based on image data stored in a memory card or the like onto a screen. This projector focuses light emitted from a light source on a micromirror display element called DMD (digital micromirror device) or a liquid crystal plate, and displays a color image on a screen.

  With the spread of video equipment such as personal computers and DVD players, the use of projectors has expanded from business presentations to home use. In such projectors, a projector using a high-intensity discharge lamp as a light source has been mainly used in the past. However, in recent years, a semiconductor light emitting device such as a plurality of laser diodes is used as a light source, and a plurality of lenses, mirrors, etc. There have been many developments and proposals of light source devices composed of optical components.

  And in patent document 1 shown below, a lens holder and a light source holder are assembled with at least three set screws and screwed in, and the amount of screwing amount and the difference in screwing amount between set screws are different. There has been proposed a light source device capable of focusing the light emitting element and adjusting the optical axis of the light emitting element with respect to the lens.

JP 2004-341451 A

  However, in the above-described light source device, when the lens holder and the light source holder assembled with screws are separated, it is possible to easily remove the light emitting element disposed on the light source holder.

  SUMMARY An advantage of some aspects of the invention is that it provides a light source device and a projector that can prevent light-emitting elements from being removed.

The light source device of the present invention is a light source device comprising a solid light emitting element having a flange part and a cylinder part protruding from the flange part, and a holder that supports the solid light emitting element, the solid light emitting element being Light is emitted in a direction in which the cylinder portion protrudes from the flange portion, and the holder has a flange concave portion into which the flange portion of the solid light emitting element is inserted on the first surface of the holder, and the flange A cylinder recess into which the cylinder portion of the solid light emitting element is inserted continuously and substantially coaxially with the recess for the solid light emitting element, and a flange portion of the solid light emitting element is disposed in the flange concave portion of the holder; The cylinder portion is disposed in the cylinder recess of the holder, and the surface of the flange portion on the side opposite to the light irradiation direction side of the solid state light emitting element is the first portion of the holder. The solid-state light-emitting element is disposed inside the holder so as to be located on the light irradiation direction side of the solid-state light-emitting element with respect to the surface, and the holder is opposite to the first surface of the holder. A light transmission hole through which light emitted from the light irradiation port of the solid state light emitting device passes outward, and the minimum diameter of the light transmission hole is the same as that of the light irradiation port of the solid state light emitting device. characterized in that it is substantially the same size.

  The projector of the present invention includes a light source device, a display element, a light source side optical system that guides light from the light source device to the display element, and a projection side optical that projects an image emitted from the display element onto a screen. And a projector control means for controlling the light source device and the display element, wherein the light source device is the above-described light source device of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the light source device which can prevent extraction of a light emitting element, and a projector can be provided.

1 is an external perspective view showing a projector according to an embodiment of the invention. It is a figure which shows the functional block of the projector which concerns on embodiment of this invention. 1 is a schematic plan view showing an internal structure of a projector according to an embodiment of the invention. It is a cross-sectional schematic diagram of the light source device which concerns on embodiment of this invention. It is a cross-sectional schematic diagram at the time of making the light transmission hole of the light source device which concerns on embodiment of this invention into a reverse taper shape. It is a cross-sectional schematic diagram at the time of making the light transmission hole of the light source device which concerns on embodiment of this invention into step shape. It is a cross-sectional schematic diagram at the time of forming a taper in the holder of the light source device which concerns on embodiment of this invention. It is a cross-sectional schematic diagram at the time of forming a taper in the holder of the light source device which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of the projector 10. In the present embodiment, left and right in the projector 10 indicate the left and right direction with respect to the projection direction, and front and rear indicate the screen side direction of the projector 10 and the front and rear direction with respect to the traveling direction of the light beam.

  As shown in FIG. 1, the projector 10 has a substantially rectangular parallelepiped shape, and has a lens cover 19 that covers the projection port on the side of the front panel 12 that is a front side plate of the projector housing. The panel 12 is provided with a plurality of intake holes 18. Further, although not shown, an Ir receiver for receiving a control signal from the remote controller is provided.

  In addition, a key / indicator unit 37 is provided on the top panel 11 of the housing. The key / indicator unit 37 switches a power switch key, a power indicator for notifying power on / off, and switching on / off of projection. Keys and indicators such as an overheat indicator for notifying when a projection switch key, a light source unit, a display element, a control circuit, etc. are overheated are arranged.

  In addition, an input / output connector portion provided with a D-SUB terminal, an S terminal, an RCA terminal, an audio output terminal, and the like for inputting a video signal to which a USB terminal or an analog RGB video signal is input to the rear panel is provided on the rear surface of the housing; Various terminals 20 such as a power adapter plug are provided. In addition, a plurality of intake holes are formed in the back panel. A plurality of exhaust holes 17 are formed in each of the right panel, which is a side plate of the housing (not shown), and the left panel 15, which is the side plate shown in FIG. An intake hole 18 is also formed at a corner near the back panel of the left panel 15.

  Next, projector control means of the projector 10 will be described with reference to the functional block diagram of FIG. The projector control means includes a control unit 38, an input / output interface 22, an image conversion unit 23, a display encoder 24, a display drive unit 26, and the like.

  The control unit 38 controls the operation of each circuit in the projector 10, and includes a CPU, a ROM that stores operation programs such as various settings fixedly, and a RAM that is used as a work memory. Yes.

  Then, the image signal of various standards input from the input / output connector unit 21 by the projector control means is in a predetermined format suitable for display by the image conversion unit 23 via the input / output interface 22 and the system bus (SB). After being converted so as to be unified into an image signal, it is output to the display encoder 24.

  The display encoder 24 develops and stores the input image signal in the video RAM 25, generates a video signal from the stored contents of the video RAM 25, and outputs the video signal to the display drive unit 26.

  The display drive unit 26 functions as display element control means, and drives the display element 51, which is a spatial light modulation element (SOM), at an appropriate frame rate corresponding to the image signal output from the display encoder 24. Is. The projector 10 irradiates the light beam emitted from the light source unit 60 to the display element 51 through a light source side optical system described later, thereby forming an optical image with the reflected light of the display element 51, and An image is projected and displayed on a screen (not shown) through an optical system. The movable lens group 235 of the projection side optical system is driven by the lens motor 45 for zoom adjustment and focus adjustment.

  Further, the image compression / decompression unit 31 performs a recording process in which the luminance signal and the color difference signal of the image signal are data-compressed by a process such as ADCT and Huffman coding, and are sequentially written in a memory card 32 which is a detachable recording medium. .

  Further, the image compression / decompression unit 31 reads out the image data recorded on the memory card 32 in the reproduction mode, decompresses individual image data constituting a series of moving images in units of one frame, and converts the image data into the image conversion unit. A process for enabling display of a moving image or the like based on the image data output to the display encoder 24 and stored in the memory card 32 is performed.

  Then, an operation signal of a key / indicator unit 37 composed of a main key and an indicator provided on the top panel 11 of the housing is directly sent to the control unit 38, and a key operation signal from the remote controller is received by Ir. The code signal received by the unit 35 and demodulated by the Ir processing unit 36 is output to the control unit 38.

  Note that an audio processing unit 47 is connected to the control unit 38 via a system bus (SB). The sound processing unit 47 includes a sound source circuit such as a PCM sound source, converts the sound data into analog in the projection mode and the playback mode, and drives the speaker 48 to emit loud sounds.

  Further, the control unit 38 controls a light source control circuit 41 as a light source control means, and the light source control circuit 41 is configured so that light of a predetermined wavelength band required at the time of image generation is emitted from the light source unit 60. Individual control for emitting light in the red, green and blue wavelength bands of the light source unit 60 is performed.

  Further, the control unit 38 causes the cooling fan drive control circuit 43 to perform temperature detection using a plurality of temperature sensors provided in the light source unit 60 and the like, and controls the rotation speed of the cooling fan from the result of the temperature detection. Further, the control unit 38 causes the cooling fan drive control circuit 43 to keep the cooling fan rotating even after the projector body is turned off by a timer or the like, or to turn off the projector body depending on the result of temperature detection by the temperature sensor. Control is also performed.

  Next, the internal structure of the projector 10 will be described. FIG. 3 is a schematic plan view showing the internal structure of the projector 10. As shown in FIG. 3, the projector 10 includes a control circuit board 241 in the vicinity of the right panel 14. The control circuit board 241 includes a power circuit block, a light source control block, and the like. In addition, the projector 10 includes a light source unit 60 on the side of the control circuit board 241, that is, at a substantially central portion of the projector housing. Further, the projector 10 includes an optical system unit 160 between the light source unit 60 and the left panel 15.

  The light source unit 60 includes an excitation light irradiation device 70 disposed in the vicinity of the rear panel 13 at a substantially central portion in the left-right direction of the projector housing, and an optical axis of a light beam emitted from the excitation light irradiation device 70. The fluorescent light emitting device 100 disposed near the front panel 12, the red light source device 120 disposed between the excitation light irradiation device 70 and the fluorescent light emitting device 100, and the emission light and red color from the fluorescent light emitting device 100 A light guide optical system 140 that converts the optical axis of light emitted from the light source device 120 so as to be the same optical axis, and collects each color light at the entrance of the light tunnel 175 that is a predetermined surface. .

  The excitation light irradiation device 70 includes a light source group 72 including a plurality of excitation light sources 71 that are solid-state light emitting elements arranged so that the optical axis is parallel to the rear panel 13, and the optical axis of the emitted light from each excitation light source 71 is in front A plurality of reflecting mirrors 75 that convert 90 degrees in the panel 12 direction, a condensing lens 78 that condenses the emitted light from each excitation light source 71 reflected by the plurality of reflecting mirrors 75, and the excitation light source 71 and the right panel 14 It includes a heat sink 81 and the like disposed therebetween.

  The light source group 72 includes a plurality of excitation light sources 71 that are blue laser diodes arranged in a matrix. In addition, on the optical axis of each excitation light source 71, a lens array 73 formed by arranging collimator lenses, which are condensing lenses that convert light emitted from each blue laser diode into parallel light, is arranged in a matrix. Yes. The plurality of reflecting mirrors 75 are arranged in a stepped manner, and by narrowing the interval between the light source light beams emitted from each excitation light source 71, the cross-sectional area of the light beam emitted from the light source group 72 is reduced in the horizontal direction. It is reduced and reflected toward the condenser lens 78.

  A cooling fan 261 is disposed between the heat sink 81 and the back panel 13, and the excitation light source 71 is cooled by the cooling fan 261 and the heat sink 81. Further, a cooling fan 261 is disposed between the reflection mirror 75 and the back panel 13, and the reflection mirror 75 and the condenser lens 78 are cooled by the cooling fan 261.

  The fluorescent light emitting device 100 is arranged so as to be parallel to the front panel 12, that is, the fluorescent wheel 101 disposed so as to be orthogonal to the optical axis of the emitted light from the excitation light irradiation device 70, and the fluorescent wheel 101 is rotationally driven. And a condensing lens group 111 that condenses the light bundle emitted from the excitation light irradiation device 70 on the fluorescent wheel 101 and condenses the light bundle emitted from the fluorescent wheel 101 toward the rear panel 13; And a condensing lens 115 that condenses the light bundle emitted from the fluorescent wheel 101 toward the front panel 12.

  The fluorescent wheel 101 receives the emission light from the excitation light irradiation device 70 as excitation light and emits the green fluorescent light emission region in the green wavelength band, and the diffusion that diffuses and transmits the emission light from the excitation light irradiation device 70 The transmission region is arranged in parallel in the circumferential direction. Further, the base material in the green fluorescent light emitting region is a metal base material made of copper, aluminum or the like, and the surface of the base material on the back panel 13 side is mirror processed by silver vapor deposition or the like. A green phosphor layer is laid on the surface. Furthermore, the base material in the diffuse transmission region is a transparent base material having translucency, and fine irregularities are formed on the surface of the base material by sandblasting or the like.

  The light emitted from the excitation light irradiating device 70 applied to the green phosphor layer of the fluorescent wheel 101 excites the green phosphor in the green phosphor layer, and the light bundle is emitted in all directions from the green phosphor. Is reflected directly to the rear panel 13 side or after being reflected by the surface of the fluorescent wheel 101 and then emitted to the rear panel 13 side and enters the condenser lens group 111. Further, the light emitted from the excitation light irradiating device 70 irradiated to the diffuse transmission region of the fluorescent wheel 101 is incident on the condenser lens 115 as diffuse transmitted light diffused by the fine unevenness. A cooling fan 261 is disposed between the wheel motor 110 and the front panel 12, and the fluorescent light emitting device 100 and the like are cooled by the cooling fan 261.

  The red light source device 120 is a monochromatic light emitting device including a red light source 121 arranged so that the optical axis is parallel to the excitation light source 71, and a condensing lens group 125 that condenses the light emitted from the red light source 121. is there. The red light source 121 is a red light emitting diode that emits light in the red wavelength band. The red light source device 120 is disposed so that the optical axis intersects the light emitted from the excitation light irradiation device 70 and the green wavelength band light emitted from the fluorescent wheel 101. Furthermore, the red light source device 120 includes a heat sink 130 disposed on the right panel 14 side of the red light source 121. A cooling fan 261 is disposed between the heat sink 130 and the front panel 12, and the red light source 121 is cooled by the cooling fan 261.

  The light guide optical system 140 includes a condensing lens that condenses the light bundles in the red, green, and blue wavelength bands, and a reflection mirror that converts the optical axes of the light bundles in the respective color wavelength bands into the same optical axis, It consists of a dichroic mirror. Specifically, the blue wavelength band light emitted from the excitation light irradiation device 70 and the green wavelength band light emitted from the fluorescent wheel 101 intersect with the red wavelength band light emitted from the red light source device 120. A first dichroic mirror 141 that transmits blue and red wavelength band light, reflects green wavelength band light, and converts the optical axis of the green light by 90 degrees toward the left panel 15 is disposed.

  Also, on the optical axis of the blue wavelength band light diffusely transmitted through the fluorescent wheel 101, that is, between the condenser lens 115 and the front panel 12, the blue wavelength band light is reflected and the optical axis of this blue light is on the left side. A first reflecting mirror 143 that converts 90 degrees in the direction of the panel 15 is disposed. Further, on the optical axis of the blue wavelength band light reflected by the first reflection mirror 143 and in the vicinity of the optical system unit 160, a second reflection mirror for converting the optical axis of the blue light by 90 degrees in the direction of the back panel 13 145 is arranged.

  Further, the optical axis of the red wavelength band light transmitted through the first dichroic mirror 141, the optical axis of the green wavelength band light reflected by the first dichroic mirror 141 so as to coincide with this optical axis, and the second reflection mirror 145 At the position where the optical axis of the reflected blue wavelength band light intersects, the blue wavelength band light is transmitted, the red and green wavelength band light is reflected, and the optical axes of the red and green light are 90 degrees toward the rear panel 13. A second dichroic mirror 148 for changing the degree is arranged. A condensing lens is disposed between the dichroic mirror and the reflecting mirror. Further, in the vicinity of the light tunnel 175, a condenser lens 173 that condenses the light source light at the entrance of the light tunnel 175 is disposed.

  The optical system unit 160 includes an illumination side block 161 located on the left side of the excitation light irradiation device 70, an image generation block 165 located near a position where the back panel 13 and the left panel 15 intersect, and a light guide optical system. The projection-side block 168 located between the 140 and the left panel 15 is configured in a substantially U-shape.

  The illumination side block 161 includes a part of the light source side optical system 170 that guides the light source light emitted from the light source unit 60 to the display element 51 provided in the image generation block 165. As the light source side optical system 170 included in the illumination side block 161, the light tunnel 175 that uses the light beam emitted from the light source unit 60 as a light flux having a uniform intensity distribution and the light emitted from the light tunnel 175 are condensed. There are a condensing lens 178, an optical axis conversion mirror 181 that converts the optical axis of the light beam emitted from the light tunnel 175 in the direction of the image generation block 165, and the like.

  As the light source side optical system 170, the image generation block 165 includes a condenser lens 183 that condenses the light source light reflected by the optical axis conversion mirror 181 on the display element 51, and a light beam that has passed through the condenser lens 183 as a display element. And an irradiation mirror 185 that irradiates 51 at a predetermined angle. Further, the image generation block 165 includes a DMD serving as the display element 51, and a heat sink 190 for cooling the display element 51 is disposed between the display element 51 and the rear panel 13. Element 51 is cooled. Further, a condensing lens 195 as the projection-side optical system 220 is disposed in the vicinity of the front surface of the display element 51.

  The projection-side block 168 has a lens group of the projection-side optical system 220 that emits ON light reflected by the display element 51 to the screen. The projection-side optical system 220 includes a fixed lens group 225 built in a fixed lens barrel and a movable lens group 235 built in a movable lens barrel, and is a variable focus lens having a zoom function, and is movable by a lens motor. Zoom adjustment and focus adjustment can be performed by moving the lens group 235.

  Next, the light source device that emits the blue wavelength band light according to the present invention, and the light source device having the excitation light source 71 including the lens array 73 that is the excitation light irradiation device 70 and the blue laser diode in the light source device that emits the green wavelength band light. Will be described in detail with reference to the drawings. FIG. 4 is a schematic cross-sectional view showing the mounting structure of the lens array 73, the excitation light source 71, the holder 79, the base 91, and the like of the light source device. In the present embodiment, the left and right in the light source device of the present invention means the left and right with respect to the emission direction of the excitation light source 71 shown in FIG. .

  The excitation light irradiation device 70 includes a plurality of excitation light sources 71 that irradiate light of a predetermined wavelength band, a lens array 73 that includes a plurality of collimator lenses that collect the light emitted from the plurality of excitation light sources 71 as parallel light, The lens array 73 and the holder 79 for storing the excitation light source 71 so as to be buried, the presser metal plate 89 for arranging and fixing the lens array 73 to the holder 79, and the holder 79 for cooling the excitation light source 71 are arranged behind the holder 79. A base 91 that is thermally connected to the heat sink 81 is provided.

  In the excitation light source 71, blue laser diodes, which are a plurality of semiconductor light emitting elements that emit light in the blue wavelength band, are arranged in a matrix. And this excitation light source 71 has the flange part 71a and the cylinder part 71b which protrudes from this flange part 71a, and irradiates light toward the direction where the cylinder part 71b protrudes from the flange part 71a. Further, the excitation light source 71 is installed so as to be buried in the holder so that the rear surface of the flange portion 71a is located on the light irradiation direction side of the excitation light source 71 with respect to the rear surface of the holder 79.

The holder 79 is a heat radiating member such as aluminum and has a cylindrical shape for accommodating the cylinder part 71b of the excitation light source 71, and has a diameter smaller than that of the cylinder part 71b in the center for emitting light, and is a laser beam. A cylinder recess 79b having a light transmission hole 79f having a diameter substantially equal to the glass diameter of the emission portion, and a flange recess 79a that is a recess for housing the flange 71a of the excitation light source 71 are formed. That is, in the holder 79, a flange recess 79a into which the flange portion 71a of the excitation light source 71 is inserted is formed on the holder rear surface 79k ( first surface), and the excitation light source 71 is substantially coaxial and continuous with the flange recess 79a. A cylinder recess 79b into which the cylinder portion 71b is inserted is formed.

  The diameter of the cylindrical flange 71a of the excitation light source 71 is substantially the same as the diameter of the cylindrical flange recess 79a of the holder 79, and the excitation light source 71 is arranged to be press-fitted into the holder 79, for example. The excitation light source 71 is fixed. Then, for positioning in the direction perpendicular to the optical axis of the emitted light of the excitation light source 71, the flange side surface 71i of the holder 79 is in contact with the outer periphery of the flange portion 71a of the excitation light source 71, that is, the flange recess side wall surface 79j of the holder 79. The excitation light source 71 is arranged in the holder 79 so as to be appropriate.

  For example, the excitation light source 71 is disposed so as to be press-fitted in the holder 79, and further, an excitation agent, for example, a heat conductive adhesive, is filled from the flange side surface 71i to the rear surface of the flange so that the excitation light source 71 is placed in the holder 79. It may be fixed. That is, the adhesive is filled between the side surface 71i of the flange portion 71a and the flange recess side wall surface 79j of the holder 79.

  The holder 79 contacts the front surface of the cylinder portion 71b at the periphery of the light irradiation port 71c of the excitation light source 71 with the cylinder receiving portion 79d of the cylinder recess 79b of the holder 79 facing the front surface. The position is adjusted properly.

  The lens array 73 is plate-shaped and has a substantially rectangular shape, and is made of a light-transmitting glass material (glass material) or the like. The lens array 73 is arranged corresponding to each of the plurality of excitation light sources 71, and each light is collimated. A plurality of collimator lenses for condensing are integrally molded, and the flat plate portion and the lens portion are integrally molded.

  The lens array 73 is positioned by the lens receiving portion 79c of the holder 79 at the periphery of the flat plate portion, and is fixed by restricting the mounting position in the optical axis direction.

  The holder 79 positioned behind the lens array 73 has a smaller diameter than the diameter of the cylinder portion 71b of the excitation light source 71 on the holder front surface 79l (second surface), that is, a glass portion serving as the light irradiation port 71c of the excitation light source 71. A light transmission hole 79f through which light irradiated from the light irradiation port 71c of the excitation light source 71 having a diameter substantially the same as that of the first light source 71 passes outward. That is, the light transmission hole 79f utilizes the side wall as the light guide side wall 79e.

  For example, the light guide side wall 79e has a mirror finish on the side wall of the light transmission hole 79f for light emission of the concave part 79b for the cylinder, so that light can be emitted from each other and the light can be reliably emitted forward from the hole. .

  Further, the light transmitting hole 79f is so formed that the planar shape of the light transmitting hole 79f gradually increases as the distance from the light irradiation port 71c of the excitation light source 71 increases, that is, the shape of the light transmitting hole 79f for light emission of the cylinder recess 79b. May be formed in such a manner that the front is gradually enlarged from the diameter substantially the same as the diameter of the glass portion that becomes the light irradiation port 71c of the excitation light source 71. For example, by using a reverse taper shape as shown in FIG. 5 or a staircase shape as shown in FIG. 6, it is possible to prevent the hole wall from being irradiated with light and causing unnecessary heat generation. Further, if the light transmitting hole 79f has a stepped shape, the surface area of the light guide side wall 79e is increased, so that the area in contact with air can be increased and the cooling effect can be enhanced.

  In this way, by processing the side wall of the light transmission hole 79f of the holder 79 as the light guide side wall 79e, the light emitted from the excitation light source 71 is irradiated onto the hole wall to generate heat wastefully or attenuate the light. Can be prevented.

The diameter or minimum diameter of the light transmission hole 79f is set to be approximately the same as the diameter of the glass portion that becomes the light irradiation port 71c of the excitation light source 71, for example, from the front in order to perform extraction of the excitation light source 71. If it is pushed out by a stick or the like, the glass part will be damaged. In the cylinder portion of the excitation light source 71, a light emitter for generating laser light is disposed and filled with an inert gas such as nitrogen in order to maintain high light emission efficiency as a semiconductor laser . If the glass portion of the excitation light source 71 is broken and air enters the cylinder portion, the light emitting layer of the light emitter that generates laser light with oxygen in the air is deteriorated, and the light emission efficiency is remarkably lowered. With such a configuration, a normal excitation light source 71 cannot be extracted from the front of the holder by using a stick or the like.

  In this way, the light source device places the excitation light source 71 in the holder so that the rear surface of the flange portion 71a of the excitation light source 71 is positioned closer to the light irradiation direction of the excitation light source 71 than the rear surface of the holder 79. It is possible to prevent the excitation light source 71 from being extracted by being buried in the substrate.

  In the above embodiment, the light source device and the projector 10 that can prevent the excitation light source 71 from being removed have been described. However, the present invention is not limited to this configuration. For example, the base is unnecessary and the holder is directly used as a heat sink. A configuration in which heat connection is performed may be used.

Further, the flange concave portion 79a of the holder 79 has been described as forming a concave portion into which the flange portion 71a of the excitation light source 71 is press-fitted. However, the present invention is not limited to this. For example, FIG. As shown, the vicinity of the entrance of the flange recess 79a where the excitation light source 71 is inserted may be tapered 79i so that the excitation light source 71 can be easily placed inside the holder.

  Further, for positioning in the direction perpendicular to the optical axis of the emitted light of the excitation light source 71, the holder 79 is formed so as to be in contact with the outer periphery of the flange portion 71a of the excitation light source 71, that is, the flange recess side wall surface 79j of the holder 79, Although the description has been made with the configuration in which the excitation light source 71 is placed at an appropriate position, the present invention is not limited thereto. For example, the holder 79 is the outer periphery of the cylinder portion 71b of the excitation light source 71, that is, the cylinder recess side wall surface of the holder 79. It may be formed so as to contact 79m. That is, the holder 79 may be formed by applying the cylinder recess 79b to a recess that contacts the outer periphery of the cylindrical cylinder portion 71b of the excitation light source 71.

Further, if the cylinder recess 79b of the holder 79 has a tapered shape 79g near the entrance of the cylinder recess 79b where the excitation light source 71 is inserted as shown in FIG. 8, the arrangement of the excitation light source 71 is facilitated. be able to.

  In the above embodiment, the configuration of the excitation light irradiation device 70 that also serves as a blue light source as the light source device of the projector 10 has been described. However, the light source device of the present invention is, for example, a red light source device or a green light source device of the projector 10. The optical system has a light source group in which a plurality of light sources are arranged in a plane so as to form rows and columns, and a lens group for condensing each light bundle emitted from each light source. The same applies to cases.

  In the above embodiment, the configuration of the excitation light irradiation device 70 formed by arranging a plurality of blue laser diodes as semiconductor light emitting elements in a matrix as the light source device of the projector 10 has been described, but the light source of the present invention The apparatus has, for example, a configuration of a light source device including a light source using a light emitting element having a large light emission amount even if it is a single element, and a lens such as a condensing lens that collects a light bundle emitted from the light source. The same applies to the case.

  As described above, according to the embodiment of the present invention, it is possible to provide the light source device and the projector 10 that can prevent the excitation light source 71 that is a light emitting element from being extracted in a normal state.

  Then, according to the embodiment of the present invention, the light transmission hole 79f is formed on the front surface of the holder 79, and the light transmission hole 79f is a hole having substantially the same size as the glass portion that is the light irradiation port 71c of the excitation light source 71. Therefore, when the extraction operation is performed so as to push out from the front, the excitation light source 71 is destroyed, and the excitation light source 71 is prevented from being normally extracted.

  Further, according to the embodiment of the present invention, the side surface of the light transmission hole 79f of the cylinder recess 79b has a mirror surface treatment, or the planar shape of the light transmission hole 79f is sequentially increased as the distance from the light irradiation port 71c of the excitation light source 71 increases. By adopting an inversely tapered shape or a stepped shape that is widened, the light emitted from the excitation light source 71 can be efficiently used as projection light.

  Furthermore, according to the embodiment of the present invention, the front surface of the cylinder portion 71b of the excitation light source 71 and the cylinder receiving portion 79d that is the receiving surface of the cylinder recess 79b of the holder 79 facing the front surface make contact with each other. The position adjustment in the axial direction can be made appropriate.

  Further, according to the embodiment of the present invention, by using a laser diode as the excitation light source 71, the phosphor can be efficiently excited to emit light. Then, by forming a phosphor layer having a phosphor emitting at least green wavelength band light on the fluorescent wheel 101, green wavelength band light which is a primary color can be generated.

  Furthermore, according to the embodiment of the present invention, if the flange concave portion 79a of the holder 79 is formed so as to contact the outer periphery of the flange portion 71a of the excitation light source 71, the position in the direction perpendicular to the optical axis is appropriate. be able to.

  Then, according to the embodiment of the present invention, the adhesive 80 is filled between the side surface of the flange portion 71a of the excitation light source 71 and the flange recess side wall surface 79j of the flange recess portion 79a of the holder 79 to excite the holder 79. Fixing the light source 71 prevents the excitation light source 71 from being removed in a normal state even if the holder 79 in the light source device is removed.

Furthermore, according to the embodiment of the present invention, when the solid light emitting element is inserted into the flange recess portion 79a of the holder 79 when it is formed so as to contact the outer periphery of the flange portion 71a of the excitation light source 71, the recess entrance The vicinity of the tapered shape 79i makes it possible to easily arrange the excitation light source 71 inside the holder 79.

  In addition, according to the embodiment of the present invention, if the cylinder recess 79b of the holder 79 is formed so as to contact the outer periphery of the cylinder portion 71b of the excitation light source 71, the position in the direction perpendicular to the optical axis is appropriate. be able to.

According to the embodiment of the present invention, the concave portion 79b for the cylinder of the holder 79 has a tapered shape 79g in the vicinity of the concave portion entrance into which the solid-state light emitting element is inserted, so that the excitation light source 71 can be easily placed inside the holder 79. Can be arranged.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

The invention described in the first claim of the present application will be appended below.
[1] A light source device comprising: a solid light emitting element having a flange part and a cylinder part protruding from the flange part; and a holder that supports the solid light emitting element,
The solid state light emitting device irradiates light in a direction in which the cylinder portion protrudes from the flange portion,
The holder has a flange concave portion into which the flange portion of the solid light emitting element is inserted on the first surface of the holder, and the cylinder portion of the solid light emitting element is substantially coaxial with the flange concave portion continuously. A recess for the cylinder to be inserted is formed,
The flange portion of the solid light emitting element is disposed in the concave portion for the flange of the holder, the cylinder portion of the solid light emitting element is disposed in the concave portion for the cylinder of the holder, and the light irradiation direction of the solid light emitting element of the flange portion The solid light-emitting element is disposed inside the holder so that the surface opposite to the side is located closer to the light irradiation direction side of the solid light-emitting element than the first surface of the holder. A light source device.
[2] The holder has a light transmission hole on the second surface opposite to the first surface of the holder, through which the emitted light emitted from the light irradiation port of the solid state light emitting device passes outward. The light transmission device according to [1], wherein the light transmission hole is a hole having a size substantially the same as a light irradiation port of the solid state light emitting device.
[3] The light source device according to [2], wherein the side wall of the light transmission hole is mirror-finished.
[4] The light transmission hole is formed such that the planar shape of the light transmission hole is gradually increased as the distance from the light irradiation port of the solid state light emitting device is increased. 3] The light source device according to 3.
[5] The above [1] to [4], wherein a surface of the cylinder portion of the solid state light emitting element on the light irradiation direction side of the solid state light emitting element is in contact with the concave portion for the cylinder of the holder. ] The light source device in any one of.
[6] The light source device according to any one of [1] to [5], wherein the solid-state light emitting element is a laser diode.
[7] The light source according to any one of [1] to [6], wherein a flange concave portion of the holder is formed so as to contact an outer periphery of the flange portion of the solid state light emitting device. apparatus.
[8] Any of [1] to [7] above, wherein an adhesive is filled between a side surface of the flange portion of the solid-state light emitting element and a side wall surface of the flange concave portion of the holder. A light source device according to claim 1.
[9] The above [1] to [8], wherein the flange concave portion of the holder is formed so as to have a tapered shape in the vicinity of an inlet into which the solid light emitting element is inserted into the flange concave portion. ] The light source device in any one of.
[10] The concave portion for cylinder of the holder is formed so as to be in contact with the outer periphery of the cylinder portion of the solid state light emitting device. Light source device.
[11] The light source as described in [10] above, wherein the concave portion for cylinder of the holder is formed so that the vicinity of the inlet into which the solid state light emitting element is inserted into the concave portion for cylinder is tapered. apparatus.
[12] a light source device;
A display element;
A light source side optical system for guiding light from the light source device to the display element;
A projection-side optical system that projects an image emitted from the display element onto a screen;
Projector control means for controlling the light source device and the display element,
A projector, wherein the light source device is the light source device according to any one of [1] to [11].

10 Projector 11 Top panel
12 Front panel
13 Rear panel 14 Right panel
15 Left panel 17 Exhaust hole
18 Air intake hole 19 Lens cover
20 Various terminals 21 Input / output connector
22 I / O interface 23 Image converter
24 Display encoder 25 Video RAM
26 Display drive unit 31 Image compression / decompression unit
32 Memory card 35 Ir receiver
36 Ir processing section 37 Key / indicator section
38 Control unit 41 Light source control circuit
43 Cooling fan drive control circuit 45 Lens motor
47 Audio processor 48 Speaker
51 Display element 60 Light source unit
70 Excitation light irradiation device 71 Excitation light source
71a Flange 71b Cylinder
71c Light irradiation port 71i Flange side
72 light sources
73 Collimator lens 75 Reflective mirror group
78 Condensing lens
79 Holder 79a Flange recess
79b Cylinder recess 79c Lens support
79d Cylinder receiving part 79e Light guide side wall
79f Light transmission hole 79g Taper shape
79i Taper shape 79j Flange recess side wall
79k Rear side of holder 79l Front side of holder
79m Cylinder recess side wall
80 Adhesive 81 Heat sink
89 Presser plate
91 base
100 Fluorescent light emitting device 101 Light emitting wheel
110 wheel motor
111 Condensing lens group 115 Condensing lens
120 Red light source 121 Red light source
125 condenser lens group 130 heat sink
140 Light guide optics 141 Dichroic mirror
143 First reflection mirror
145 Second reflection mirror 148 Second dichroic mirror
160 Optical unit 161 Illumination side block
165 Image generation block 168 Projection side block
170 Light source side optical system 173 Condensing lens
175 Light Tunnel
178 condenser lens
181 Optical axis conversion mirror 183 Condensing lens
185 Irradiation mirror 190 Heat sink
195 Condenser lens 220 Projection-side optical system
225 Fixed lens group 235 Movable lens group
241 Control circuit board 261 Cooling fan

Claims (11)

A light source device comprising: a solid light emitting element having a flange part and a cylinder part protruding from the flange part; and a holder for supporting the solid light emitting element,
The solid state light emitting device irradiates light in a direction in which the cylinder portion protrudes from the flange portion,
The holder has a flange concave portion into which the flange portion of the solid light emitting element is inserted on the first surface of the holder, and the cylinder portion of the solid light emitting element is continuously coaxial with the flange concave portion. A recess for the cylinder to be inserted is formed,
The flange portion of the solid light emitting element is disposed in the concave portion for the flange of the holder, the cylinder portion of the solid light emitting element is disposed in the concave portion for the cylinder of the holder, and the light irradiation direction of the solid light emitting element of the flange portion The solid light emitting element is disposed inside the holder so that the surface opposite to the side is located on the light irradiation direction side of the solid light emitting element from the first surface of the holder,
The holder has a light transmission hole through which light emitted from the light irradiation port of the solid-state light emitting element passes outwardly on a second surface opposite to the first surface of the holder, light source device minimum diameter of the light transmitting holes, characterized in that the light exit opening substantially the same size of the solid state light emitting devices.
The light source device according to claim 1 , wherein the side wall of the light transmission hole is mirror-finished. The light transmission hole sequentially with distance from the light irradiation port of the solid-state light-emitting element, according to claim 1 or claim 2, characterized in that the planar shape of the light transmission hole is formed to be wider Light source device. Of the cylinder portion of the solid-state light-emitting element, and the planes of the light irradiation direction side of the solid state light emitting devices, to any one of claims 1 to 3, characterized in that the cylinder recesses of the holder are in contact The light source device described. The solid state light emitter, a light source device according to any one of claims 1 to 4, characterized in that a laser diode. The light source device according to any one of claims 1 to 5, characterized in that the flange recess of the holder is formed to be in contact with the outer periphery of the flange portion of the solid state light emitting devices. The light source according to any one of claims 1 to 6, wherein an adhesive is filled between a side surface of the flange portion of the solid state light emitting device and a side wall surface of the flange concave portion of the holder. apparatus. The flange recess of the holder, in any one of claims 1 to 7 near the inlet of the solid-state light-emitting element to the flange recess is inserted, characterized in that it is formed to have a tapered shape The light source device described. Cylinder recess of the holder, a light source device according to any one of claims 1 to 5, characterized in that it is formed to be in contact with the outer periphery of the cylinder portion of the solid state light emitting devices. 10. The light source device according to claim 9 , wherein the concave portion for the cylinder of the holder is formed so as to have a tapered shape in the vicinity of an inlet into which the solid state light emitting element is inserted into the concave portion for the cylinder. A light source device;
A display element;
A light source side optical system for guiding light from the light source device to the display element;
A projection-side optical system that projects an image emitted from the display element onto a screen;
Projector control means for controlling the light source device and the display element;
With
The projector according to claim 1, wherein the light source device is the light source device according to claim 1.

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