JP2016177216A - Light source device and projection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the cooling efficiency of a light source and suppress the fogging of a lens or an emission surface of a light-emitting element due to the gas vaporized from a component with a simple structure.SOLUTION: A light source device includes: a plurality of semiconductor light-emitting elements 71; a lens array 73 which condenses light emitted from the semiconductor light-emitting elements 71; and a plate-shaped array holder 791 which includes a plurality of partition walls 790c, 790d, and 790e disposed on a first flat surface 790a in the column direction and extending in the row direction, and a light transmission hole 79a as a penetration hole that transits the emission light of the semiconductor light-emitting elements 71. The partition walls 790c, 790d, and 790e have a second flat surface 790f in contact with the lens array 73 in parallel to the first flat surface 790a on the side where the light of the semiconductor light-emitting element 71 is emitted from the first flat surface 790a. There is a gap at least between the partition walls 790c, 790d, and 790e disposed in the column direction. A space 790p in which the semiconductor light-emitting element 71 and the lens array 73 are in contact is connected to the outside.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a light source device having a holder that holds a plurality of light emitting elements and a lens array that collects light emitted from the light emitting elements, and a projection apparatus including the light source device.

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

  In the past, projectors using a high-intensity discharge lamp as the light source have been the mainstream. However, in recent years, various projectors using light-emitting diodes, laser diodes, organic EL, phosphors, or the like as light sources have been used. Many developments have been made.

  For example, Patent Document 1 discloses a light source holder in which a plurality of light emitting elements are arranged in a matrix, and a lens array in which a collimator lens portion corresponding to each of the light emitting elements is formed integrally with a plate-like base portion. There is disclosed a light source device including an array holding body that is disposed between a light source holding body and a lens array and holds the lens array. In this light source device, a lens array and a light transmission hole of an array holder in which light source elements are embedded are arranged in close contact with each other.

  Further, Patent Document 2 discloses a light source device that includes a holder having a through hole that accommodates a main body portion of a light emitting element, and is configured such that the tip of the claw portion of the light emitting element is in contact with the inner wall of the through hole. ing.

JP 2013-008555 A JP 2013-196937 A

  However, in the light source devices described in Patent Literature 1 and Patent Literature 2, there is a space formed by a holder for holding the collimator lens array between each light emitting element and the collimator lens array. Since the periphery of the light-emitting element is covered with the inner wall of the hole, there is a problem that it becomes a sealed space and heat does not escape.

  In addition, at present, in an LD light source for an LD (Laser Diorde) projector, aluminum die casting that is inexpensive and has good heat dissipation is sometimes used as a component part of a holder that holds a collimator lens array. In general, in the manufacturing process, heating is performed at a predetermined temperature for a predetermined time in order to remove the cutting oil and the release agent remaining in the holder. However, it is difficult to completely remove the cutting oil and the release agent for the holder that holds the collimator lens array having a complicated shape. Therefore, a slight amount of cutting oil or mold release agent may remain in the holder that holds the collimator lens array. Then, when the projection apparatus is used, the slightly remaining cutting oil and release agent are volatilized, and the collimator lens and the cover glass of the semiconductor laser are fogged, so that the brightness of the emitted light from the light source may be deteriorated.

  SUMMARY OF THE INVENTION In view of the above, the present invention provides a light source device and a projection device that have a simple configuration, increase the cooling effect of the light source, and suppress fogging of the light emitting surface of the lens and the light emitting element due to gas volatilized from the components. Objective.

  A light source device according to the present invention includes a plurality of semiconductor light emitting elements arranged in a matrix of a plurality of rows and columns, a lens array that collects light emitted from the semiconductor light emitting elements, and a first flat surface. A plurality of partition walls arranged in the column direction and extending in the row direction; and a plate-shaped array holder having a light transmission hole that is a through hole that transmits the emitted light of the semiconductor light emitting element. The partition having a second flat surface that is in parallel with the first flat surface and is in contact with the lens array on the light emitting direction side of the semiconductor light emitting element from the first flat surface, and is arranged at least in the column direction A space having a gap between them and a space where the semiconductor light emitting element and the lens array are in contact with each other are connected to the outside.

  The projection device of the present invention controls the light source device, a display element that generates image light, a projection-side optical system that projects image light emitted from the display element onto a screen, and the light source device and the display element. And a projection device control means.

  According to the present invention, it is possible to provide a light source device and a projection device that have a simple configuration and reduce the increase in the temperature of the light source and suppress the fogging of the light emitting surface of the lens and the light emitting element due to the gas volatilized from the components.

1 is an external perspective view showing a projector according to an embodiment of the invention. It is a figure which shows the functional circuit 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 perspective view of the excitation light irradiation apparatus which concerns on embodiment of this invention. It is a disassembled perspective view of the excitation light irradiation apparatus which concerns on embodiment of this invention. It is a front view of the excitation light irradiation apparatus which concerns on embodiment of this invention. It is a perspective view of the array holding body which concerns on Embodiment 1 of this invention. It is II sectional drawing of FIG. 6 of the excitation light irradiation apparatus which concerns on Embodiment 1 of this invention. It is II-II sectional drawing of FIG. 6 of the excitation light irradiation apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the array holding body which concerns on Embodiment 2 of this invention. It is sectional drawing equivalent to the II-II cross section of FIG. 6 of the excitation light irradiation apparatus which concerns on Embodiment 2 of this invention. It is a perspective view of the array holding body which concerns on Embodiment 3 of this invention. It is sectional drawing equivalent to the II-II cross section of FIG. 6 of the excitation light irradiation apparatus which concerns on Embodiment 3 of this invention.

[Embodiment 1]
Hereinafter, modes for carrying out the present invention will be described. FIG. 1 is an external perspective view of a projector 10 that is a projection apparatus according to the present invention. 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 side plate in front of the projector housing. A plurality of intake holes 18 and exhaust holes 17 are provided. Further, although not shown, an Ir receiver for receiving a control signal from the remote controller is provided.

  Further, a key / indicator unit 37 is provided on the top panel 11 of the casing, and 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, on the background of the housing, various terminals 20 such as an input / output connector section and a power adapter plug are provided on the rear panel, which are provided with a USB terminal, a D-SUB terminal for inputting image signals, an S terminal, an RCA terminal, and the like. Yes. 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 side panel, which is a side plate of the casing (not shown), and the left side panel 15, which is the side plate shown in FIG. An intake hole 18 is also formed in a corner near the back panel of the left panel 15.

  Next, the projector control means of the projector 10 will be described using the functional circuit block diagram of FIG. The projector (projection device) 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, etc., and various standard image signals input from the input / output connector unit 21. Is converted to an image signal of a predetermined format suitable for display by the image conversion unit 23 via the input / output interface 22 and the system bus (SB), and then 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 driving unit 26 functions as a display element control unit, and drives the display element 51 that is a spatial light modulation element (SOM) at an appropriate frame rate in accordance with the image signal output from the display encoder 24. Is. Then, the projector 10 irradiates the light beam emitted from the light source device 60 to the display element 51 through the light guide optical system, thereby forming an optical image with the reflected light of the display element 51, and a projection described later. An image is projected and displayed on a screen (not shown) through the side 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.

  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 encoding, and sequentially written in a memory card 32 that is a detachable recording medium. . Further, the image compression / decompression unit 31 reads the image data recorded on the memory card 32 in the reproduction mode, decompresses each image data constituting a series of moving images in units of one frame, and converts the image data into an image conversion Based on the image data that is output to the display encoder 24 via the unit 23 and stored in the memory card 32, a process for enabling display of a moving image or the like is performed.

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

  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 sent to the Ir receiving unit 35. And the code signal 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 reproduction mode, and drives the speaker 48 to make a loud sound report.

  Further, the control unit 38 controls a light source control circuit 41 as a light source control unit, 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 device 60. The light emission of the excitation light irradiation device and the red light source device of the light source device 60 is individually controlled.

  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 device 60 and the like, and controls the rotation speed of the cooling fan based on the temperature detection result. 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 temperature detection result by the temperature sensor. Control is also performed.

  FIG. 3 is a schematic plan view showing the internal structure of the projector 10. 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 device 60 at the side of the control circuit board 241, that is, at a substantially central portion of the projector 10. Further, in the projector 10, a light source side optical system 170 and a projection side optical system 220 are disposed between the light source device 60 and the left panel 15.

  The light source device 60 is a red light source device 120 that is a light source of red wavelength band light, an excitation light irradiation device 70 that is a light source of blue wavelength band light and is also used as an excitation light source, and a light source of green wavelength band light. A green light source device 90. The green light source device 90 includes an excitation light irradiation device 70 and a fluorescent screen device 100. The light source device 60 is provided with a light guiding optical system 140 that guides and emits light of each wavelength band of red, green, and blue. The light guide optical system 140 condenses each color wavelength band light emitted from each color light source device at the entrance of the light tunnel 175.

  The excitation light irradiation device 70 is disposed in the vicinity of the rear panel 13 at a substantially central portion in the left-right direction of the housing of the projector 10. The excitation light irradiation device 70 includes a light source group including a blue laser diode 71 that is a plurality of semiconductor light emitting elements arranged so that the optical axis is parallel to the back panel 13, and light emitted from each blue laser diode 71. Reflective mirror group 75 that converts the axis 90 degrees in the direction of the front panel 12, a condensing lens 78 that collects the emitted light from each blue laser diode 71 reflected by the reflective mirror group 75, and the blue laser diode 71 and the right panel 14 and the like.

  The light source group includes a plurality of blue laser diodes 71 arranged in a matrix. Further, on each optical axis of each blue laser diode 71, a lens array 73 having a plurality of collimator lenses each converting into parallel light so as to enhance the directivity of each emitted light from each blue laser diode 71 is arranged. ing. The reflecting mirror group 75 is formed by arranging a plurality of reflecting mirrors in a stepped manner and integrated with the mirror base to adjust the position, and reduces the beam bundle emitted from the blue laser diode 71 in one direction. To the condenser lens 78.

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

  The red light source device 120 includes a red light source 121 disposed so that the optical axis is parallel to the blue laser diode 71, and a condenser lens group 125 that condenses the emitted light from the red light source 121. The red light source 121 is a red light emitting diode that is a semiconductor light emitting element that emits light in a red wavelength band. In the red light source device 120, the optical axis of the red wavelength band light emitted from the red light source device 120 is the optical wavelength axis of the blue wavelength band light emitted from the excitation light irradiation device 70 and the green wavelength band light emitted from the fluorescent plate 101. It is arranged to intersect. 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 and the heat sink 130.

  The fluorescent plate device 100 constituting the green light source device 90 is disposed in the vicinity of the front panel 12 on the optical path of the excitation light emitted from the excitation light irradiation device 70. The fluorescent plate device 100 includes a fluorescent plate 101 arranged so as to be parallel to the front panel 12, that is, orthogonal to the optical axis of the emitted light from the excitation light irradiation device 70, and a motor 110 that rotationally drives the fluorescent plate 101. A condensing lens group 111 that condenses the light bundle of the excitation light emitted from the excitation light irradiation device 70 on the fluorescent plate 101 and condenses the light bundle emitted from the fluorescent plate 101 toward the rear panel 13, and the fluorescent plate 101 And a condensing lens 115 that condenses the light bundle emitted in the direction of the front panel 12. A cooling fan 261 is disposed on the right panel 14 side of the motor 110, and the fluorescent screen device 100 and the like are cooled by the cooling fan 261.

  The fluorescent plate 101 includes a fluorescent light emitting region that emits the emitted light from the excitation light irradiation device 70 via the condenser lens group 111 as excitation light and emits fluorescent light in the green wavelength band, and the emitted light from the excitation light irradiation device 70. A region that transmits or diffuses and transmits certain excitation light is continuously provided in the circumferential direction.

  The substrate of the fluorescent plate 101 is a metal substrate made of copper, aluminum, or the like. An annular groove is formed on the surface of the substrate on the side of the excitation light irradiation device 70, and the bottom of the groove is formed by silver evaporation or the like. The mirror is processed, and a green phosphor layer is laid on the mirrored surface. Furthermore, in the case where the excitation light is transmitted or diffused and transmitted, the transparent substrate having translucency is inserted into the cut-out light transmitting portion of the substrate. In the case of a region that diffuses and permeates, a transparent base material having a surface with fine irregularities formed by sandblasting or the like is inserted.

  When the green phosphor layer of the phosphor plate 101 is irradiated with blue wavelength band light as excitation light from the excitation light irradiation device 70, the green phosphor in the green phosphor layer is excited and green. Green wavelength band light is emitted in all directions from the phosphor. The fluorescent light beam is emitted toward the rear panel 13 and enters the condenser lens group 111. On the other hand, the blue wavelength band light from the excitation light irradiating device 70 that has entered the region of the fluorescent plate 101 that transmits or diffuses the incident light is transmitted or diffused through the fluorescent plate 101, and the back side of the fluorescent plate 101 (in other words, The light enters the condensing lens 115 disposed on the front panel 12 side.

  The light guide optical system 140 includes a condensing lens that condenses the light bundles of the red, green, and blue wavelength bands, and a reflection mirror that converts the optical axes of the light bundles of the respective color wavelength bands into the same optical axis, It consists of a dichroic mirror. Specifically, the light guide optical system 140 includes a blue wavelength band light emitted from the excitation light irradiation device 70 and diffused and transmitted through the diffusion plate 401, a green wavelength band light emitted from the fluorescent plate 101, and a red light source device. At the position where the red wavelength band light emitted from 120 intersects, the blue and red wavelength band light is transmitted, the green wavelength band light is reflected, and the optical axis of this green wavelength band light is 90 degrees toward the left panel 15. A first dichroic mirror 141 for conversion is disposed.

  Further, the blue wavelength band light is reflected on the optical axis of the blue wavelength band light transmitted through or diffused through the fluorescent plate 101, that is, between the condensing lens 115 and the front panel 12, and the optical axis of the blue light is changed. A first reflecting mirror 143 that converts 90 degrees in the direction of the left panel 15 is disposed. A condensing lens 146 is disposed on the left panel 15 side of the first reflecting mirror 143, and a second reflecting mirror 145 is disposed on the left panel 15 side of the condensing lens 146. A condensing lens 147 is disposed on the rear panel 13 side of the second reflecting mirror 145. The second reflection mirror 145 converts the optical axis of the blue wavelength band light reflected by the first reflection mirror 143 and incident via the condenser lens 146 to the rear panel 13 side by 90 degrees.

  A condensing lens 149 is disposed on the left panel 15 side of the first dichroic mirror 141. Further, a second dichroic mirror 148 is disposed on the left panel 15 side of the condenser lens 149 and on the rear panel 13 side of the condenser lens 147. The second dichroic mirror 148 reflects the red wavelength band light and the green wavelength band light, converts the 90 ° optical axis to the back panel 13 side, and transmits the blue wavelength band light.

  The optical axis of the red wavelength band light transmitted through the first dichroic mirror 141 and the optical axis of the green wavelength band light reflected by the first dichroic mirror 141 so as to coincide with the optical axis of the red wavelength band light are collected. The light enters the lens 149. Then, the red and green wavelength band light transmitted through the condensing lens 149 is reflected by the second dichroic mirror 148 and is condensed at the entrance of the light tunnel 175 via the condensing lens 173 of the light source side optical system 170. . On the other hand, the blue wavelength band light that has passed through the condenser lens 147 passes through the second dichroic mirror 148 and is condensed at the entrance of the light tunnel 175 via the condenser lens 173.

  The light source side optical system 170 includes a condenser lens 173, a light tunnel 175, a condenser lens 178, an optical axis conversion mirror 181, a condenser lens 183, an irradiation mirror 185, and a condenser lens 195. The condenser lens 195 emits the image light emitted from the display element 51 disposed on the back panel 13 side of the condenser lens 195 toward the projection side optical system 220. Therefore, the condenser lens 195 also includes a part of the projection side optical system 220. Has been.

  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. Therefore, the red wavelength band light, the green wavelength band light, and the blue wavelength band light are collected by the condenser lens 173 and enter the light tunnel 175. The light beam incident on the light tunnel 175 is converted into a light beam having a uniform intensity distribution by the light tunnel 175.

  On the optical axis on the back panel 13 side of the light tunnel 175, an optical axis conversion mirror 181 is disposed via a condenser lens 178. The beam bundle emitted from the exit of the light tunnel 175 is condensed by the condenser lens 178 and then the optical axis is converted to the left panel 15 side by the optical axis conversion mirror 181.

  The light beam reflected by the optical axis conversion mirror 181 is condensed by the condenser lens 183 and then irradiated by the irradiation mirror 185 to the display element 51 through the condenser lens 195 at a predetermined angle. The display element 51 that is a DMD is provided with a heat sink 190 on the back panel 13 side, and the display element 51 is cooled by the heat sink 190.

  The light beam, which is the light source light irradiated to the image forming surface of the display element 51 by the light source side optical system 170, is reflected by the image forming surface of the display element 51, and projected onto the screen as projection light via the projection side optical system 160. Is done. Here, the projection side optical system 160 includes a condenser lens 195, a movable lens group 235, and a fixed lens group 225. The movable lens group 235 is formed to be movable by a lens motor. The movable lens group 235 and the fixed lens group 225 are built in the fixed lens barrel. Therefore, the fixed lens barrel including the movable lens group 235 is a variable focus lens, and is formed so that zoom adjustment and focus adjustment are possible.

  By configuring the projector 10 in this manner, when the fluorescent plate 101 is rotated and light is emitted from the excitation light irradiation device 70 and the red light source device 120 at different timings, the light of each wavelength band of red, green, and blue is guided light. Since the light beam is sequentially incident on the condenser lens 173 and the light tunnel 175 via the system 140 and further incident on the display element 51 via the light source side optical system 170, the DMD which is the display element 51 of the projector 10 corresponds to the data. By displaying each color light in a time-sharing manner, a color image can be projected on the screen.

  In this embodiment, the excitation light irradiation device 70 is used as a light source for blue wavelength band light, but may be provided with another light source as a light source for blue wavelength band light.

  Next, the excitation light irradiation device 70 that is a light source device of the projector 10 will be described. FIG. 4 is a perspective view of the excitation light irradiation device 70. FIG. 5 is an exploded perspective view of the excitation light irradiation device 70. FIG. 6 is a front view of the excitation light irradiation device 70.

  First, an outline of the excitation light irradiation device 70 will be described. The excitation light irradiation device 70 includes a lens array 73, an array holder 791, a light source holder 80, a heat sink 81, a pressing plate 89, and a screw such as a lens position fixing screw 82 and a first lens fixing screw 87.

  Next, each component of the excitation light irradiation device 70 will be described in detail. As shown in FIGS. 4 and 5, the excitation light irradiation device 70 has a substantially rectangular parallelepiped array holding body 791 and a light source holding body 80, and a blue laser diode between the array holding body 791 and the light source holding body 80. 71 is held.

  The light source holder 80 will be described. The light source holder 80 has a plate-like main body portion 80a and a protruding portion 80b, and has a longitudinal cross-sectional shape formed in an L shape. A plurality of blue laser diodes 71 are arranged in a matrix on the plate-like main body 80a. In the present embodiment, blue laser diodes 71 are arranged in 3 rows and 8 columns, and a total of 24 blue laser diodes are provided. A heat sink 81 that dissipates heat from the light source holder 80 is attached to the rear side of the light source holder 80 with a heat sink fixing screw 83. A flexible base (not shown) that is electrically connected to the blue laser diode 71 is provided on the bottom surface side of the excitation light irradiation device 70.

  Next, the array holder 791 will be described. Between the lens array 73 and the light source holder 80, an array holder 791 that holds the lens array 73 is provided. The array holder 791 is made of a metal material having high heat dissipation and is formed in a substantially short plate shape. The array holding body 791 has a lens array 73 attached to the front surface in the light emitting direction of the blue laser diode 71. The heat generated by the blue laser diode 71 transmitted to the array holder 791 is dissipated into the air from the surface such as the side surface of the array holder 791 and is cooled by the heat sink 81 via the light source holder 80. In the array holding body 791, light transmission holes 79a are formed in a matrix at positions corresponding to the respective optical paths of the emitted light from the plurality of blue laser diodes 71.

  Next, the lens array 73 will be described. On the front side of the light source holder 80, a lens array 73 is provided in which collimator lenses as optical elements that collimate light emitted from the plurality of blue laser diodes 71 are arranged in correspondence with the blue laser diodes 71. ing. The lens array 73 includes a plate-like base portion 73a and a plurality of lens portions 73e having a convex shape. The lens portion 73e is formed on the front flat surface 73c at a position corresponding to each of the plurality of blue laser diodes 71. In addition, a flat surface 73d is formed on the rear side so as to face the array holding body 791 and abut against the array holding body 791. As a forming material of the lens array 73, a transparent material, for example, optical glass such as white plate glass or quartz glass, acrylic type, polyester type, styrene type, epoxy type, polycarbonate type, styrene type, vinyl chloride type, etc. Resin or the like can be used. The lens array 73 according to the present embodiment is molded using the forming material as a molding resin material.

  The plurality of lens portions 73e are arranged on the front flat surface 73c of the plate-like base portion 73a, and the positions of the light source elements, which are the blue laser diodes 71, in a region inside by a predetermined dimension from the peripheral portion of the plate-like base portion 73a. Are arranged in a matrix at predetermined intervals. In the present embodiment, a total of 24 lens portions 73e in 3 rows and 8 columns are formed.

  The lens array 73 has screw holes at positions different from the region where the lens portion 73e of the plate-like base portion 73a is disposed. Specifically, the lens array 73 is formed with a plurality of regions surrounded by four lens portions 73e among the lens portions 73e arranged in a matrix of 3 rows and 8 columns. For example, these areas are formed in a matrix of 2 rows and 7 columns on the plate-like base portion 73a, and have screw holes in some of the 14 areas. The screw holes include a plurality of second heat sink fixing screw holes 73j into which heat sink fixing screws are inserted, a plurality of lens position fixing screw holes 73p into which the lens position fixing screws 82 are inserted, and a first lens fixing. A first lens fixing screw hole 73n into which the screw 87 is inserted is formed.

  Next, the presser plate 89 will be described. On the front side of the array holding body 791 and the lens array 73, a substantially short plate shape that presses the lens array 73 toward the array holding body 791 so that the array holding body 791, the lens array 73, and the presser plate 89 are arranged in this order. A presser plate 89 is disposed. In the presser plate 89, a plurality of lens holes 89a, which are light irradiation holes with a large diameter, are formed in the plate-shaped main body 89f at positions corresponding to the lens portions 73e of the lens array 73. The holding plate 89 has a plurality of small-diameter second lens fixing screw holes 89h into which the second lens fixing screws 84 are inserted, and a plurality of large-diameter first lens fixings into which the first lens fixing screws 87 are inserted. A screw hole 89n. In the present embodiment, a total of six second lens fixing screw holes 89 h are provided at the four corners and the long side of the outer peripheral edge of the presser plate 89. Further, the presser plate 89 has a total of two first lens fixing screw holes 89n in the approximate center of the region surrounded by the four lens holes 89a.

  Next, a method of fastening each member constituting the excitation light irradiation device 70 will be described. In the excitation light irradiation device 70, a pressing plate 89, a lens array 73, an array holding body 791, a light source holding body 80, and a heat sink 81 are sequentially arranged from the front to the rear, and these are fastened by a plurality of fixing screws. It has a structure.

  Specifically, the heat sink fixing screw 83 is inserted into a first heat sink fixing screw hole 80p of the light source holder 80 and a first heat sink fixing screw hole (not shown) of the heat sink 81, and the light source holder 80 and the heat sink 81 is fastened. Further, the light source holder is provided via the second heat sink fixing screw hole 89j of the holding plate 89, the second heat sink fixing screw hole 73j of the lens array 73, and the second heat sink fixing screw hole 79j of the array holder 791. The second heat sink fixing screw is inserted into the second heat sink fixing screw hole 80j of 80 and the second heat sink fixing screw hole (not shown) of the heat sink 81, and the light source holder 80 and the heat sink 81 are fastened.

  The third heat sink fixing screw hole 79i of the array holder 791, the third heat sink fixing screw hole 80i of the light source holder 80, and the third heat sink fixing screw hole (not shown) of the heat sink 81 The heat sink fixing screw is inserted, and the array holder 79, the light source holder 80, and the heat sink 81 are fastened.

  Further, a holder fixing screw (not shown) is inserted into the first holder fixing screw hole 79k of the array holder 791 and the first holder fixing screw screw hole 80k of the light source holder 80 through the notch 89g of the presser plate 89. Is inserted, and the array holder 79 and the light source holder 80 are fastened. Further, a holder fixing screw (not shown) is inserted into the second holder fixing screw hole 79m of the array holding body 791 and the second holder fixing screw screw hole 80m of the light source holding body 80, so that the array holding body 79 and the light source The holding body 80 is fastened.

  The first lens fixing screw 87 includes a first lens fixing screw hole 89 n of the holding plate 89, a first lens fixing screw hole 73 n of the lens array 73, and a first lens fixing screw hole 79 n of the array holding body 79. The presser plate 89, the lens array 73, the array holder 79 and the light source holder 80 are fastened by being inserted into the first lens fixing screw screw hole 80 n of the light source holder 80.

  The lens position fixing screw 82 is inserted into the lens position fixing screw hole 89 p of the holding plate 89, the lens position fixing screw hole 73 p of the lens array 73, and the lens position fixing screw screw hole 79 p of the array holding body 79. The

  In addition, a holder fixing screw is inserted into a third holder fixing screw hole 79r of the array holder 791, a third holder fixing screw hole 80r of the light source holder 80, and a holder fixing screw screw hole (not shown) of the heat sink 81. Inserted, the array holder 791, the light source holder 80, and the heat sink 81 are fastened.

  Further, a holder fixing screw is inserted into the fourth holder fixing screw hole 79 s of the array holding body 791 and the fourth holder fixing screw screw hole 80 s of the light source holding body 80, so that the array holding body 79 and the light source holding body are inserted. 80 is fastened.

  The second lens fixing screw 84 is inserted into the second lens fixing screw hole 89 h of the holding plate 89 and the second lens fixing screw screw hole 79 h of the array holding body 791, and presses the lens array 73 while pressing it. The plate 89, the lens array 73, and the array holder 791 are fastened.

  FIG. 7 is a perspective view of the array holder 791. The array holding body 791 is formed in a substantially short plate shape as a whole, and a plurality of light transmitting holes 79a that are through holes that transmit light emitted from the blue laser diode 71 on the first flat surface 790a, A plurality of screw holes and screw screw holes for fastening the heat sink 81, the light source holder 80, the array holder 79, the lens array 73, and the presser plate 89 are provided.

  The array holding body 791 has a plurality of first array holding portions 790b on the first flat surface 790a. In the present embodiment, light transmission holes 79a are arranged in a matrix of 3 rows and 8 columns on the first flat surface 790a. That is, the light transmission holes 79a are arranged so that the number in the row direction is smaller than the number in the column direction. Thus, a plurality of regions surrounded by the four light transmission holes 79a are formed in a matrix of 2 rows and 7 columns. The first array holding portion 790b is formed in a columnar shape and is erected substantially at the center of each of a plurality of regions formed in a matrix of 2 rows and 7 columns. Each first array carrier 790b has a second flat surface 790f that comes into contact with the flat surface 73d of the lens array 73 when the lens array 73 is placed. The second flat surface 790f is provided in parallel to the first flat surface 790a and on the light emission direction side of the blue laser diode 71 from the second flat surface 790f. In addition, at the approximate center on the second flat surface 790f of each first array carrier 790b, any one of the aforementioned screw holes 79j, 79m, 79n, 79r, 79s and screw screw holes 79p is provided. . As the screw hole, for example, a holder fixing screw recess 79v that can accommodate the head of the screw may be provided as in the third holder fixing screw hole 79r, or as in the second heat sink fixing screw hole 79j. In order to directly fasten the light source holding body 80 disposed rearward, a through hole having a diameter larger than that of the screw head may be used. Depending on the method of assembling the heat sink 81, the light source holder 80, the array holder 79, the lens array 73, the presser plate 89, etc., the shape of these holes may be an appropriate shape, or no hole may be provided.

  In addition, the array holder 791 has a plurality of first partition walls 790c, second partition walls 790d, and third partition walls 790e connected to the first array carrier 790b on the first flat surface 790a so as to be linearly arranged. Have. The second partition 790d is provided so as to connect the two first array holding portions 790b to each other in the short side direction (row direction) of the array holding body 791, and the first partition 790c and the third partition 790e are connected to each first array. The support portion 790b is provided toward the edge in the short side direction (row direction) of the array holding body 791. Thereby, the plurality of light transmission holes 79a are partitioned for each column. The first partition 790c, the second partition 790d, and the third partition 790e have a second flat surface 790f that contacts the flat surface 73d of the lens array 73 and have the same height as the first array carrier 790b.

  The array holding body 791 includes a plurality of second array holding portions 79b for mounting the presser plate 89 on the side where the lens array 73 is mounted on the outer peripheral edge thereof. Each second array carrier 79 b has a second flat surface 790 f that abuts the flat surface 73 d of the lens array 73. Each second array carrier 79b has a third flat surface 790g that comes into contact with the surface of the holding plate 89 on the array holding body 791 side. When the presser plate 89 and the array holding body 791 are fastened through the second lens fixing screw screw hole 79h or the like, the lens array 73 placed therebetween is sandwiched.

  The array holding body 791 has an array holding body notch 790h formed by a first flat surface 790a and a plurality of second array holding portions 79b on the peripheral edge thereof. Thus, when the lens array 73 is placed, the lens array 73, the first array holding portion 790b, the partition walls 790c to 790e, and the first flat surface 790a are formed in the short side direction of the array holding body 791. The gap is connected to the outside of the array holder 791 through the array holder notch 790h. In the present embodiment, a total of 12 array holder cutouts 790h are provided.

  In addition, the array holder 791 has positioning pins 79t on a part of the second array carrier 79b. The positioning pin 97t is inserted into the positioning pin hole 89t of the presser plate 89, and functions as a guide for determining the contact position on the third flat surface 790g when the presser plate 89 is fastened to the array holding body 791.

  8 is a cross-sectional view taken along the line II of the excitation light irradiation device 70 in FIG. The excitation light irradiation device 70 includes a plurality of blue laser diodes 71 that irradiate light of a predetermined wavelength band, and a plurality of collimator lens units 73e that condense each light emitted from the plurality of blue laser diodes 71 as parallel light. A lens array 73, an array holding body 791 in which the lens array 73 is arranged and stored so as to embed the blue laser diode 71, a pressing plate 89 for holding the lens array 73 between the array holding body 791 and fixing the lens array 73, and the rear of the array holding body 791 And a light source holder 80 connected to the heat sink 81 for cooling the blue laser diode 71.

  The blue laser diode 71 has a flange portion 71a, a cylinder portion 71b protruding from the flange portion 71a, and a light emitting surface 71c that emits light in a direction in which the cylinder portion 71b protrudes from the flange portion 71a.

  The array holder 791 is formed of a heat radiating member such as aluminum. The array holding body 791 has a light transmission hole 79a having a diameter larger than that of the cylinder portion 71b for accommodating the cylinder portion 71b of the blue laser diode 71 and smaller than that of the flange portion 71a of the blue laser diode 71. Have. The light source holder 80 has a flange recess 80 c that is a recess for housing the flange 71 a of the blue laser diode 71. That is, in the light source holder 80, a flange recess 80c in which the flange portion 71a of the blue laser diode 71 is accommodated is formed on the light source holder front surface 80l. The array holder 791 is formed with a light transmission hole 79a into which the cylinder portion 71b of the blue laser diode 71 is inserted substantially coaxially and continuously with the flange recess 80c.

  For positioning in the direction perpendicular to the optical axis of the emitted light of the blue laser diode 71, for example, a cylinder side surface 71i on the outer periphery of the cylinder portion 71b of the blue laser diode 71 is provided in the light transmission hole 79a of the array holder 791. It arrange | positions so that it may contact | connect the side wall 79e. The blue laser diode 71 is housed in a flange recess 80c provided on the light source holder front surface 80l on the light source holder 80 on the side of the array holder 791 in the cylinder portion 71b. It is fixed by being sandwiched between the body 80.

  For example, when the blue laser diode 71 is disposed by being inserted into the light transmitting hole 79a, the blue side surface diode 71i and / or the front surface of the flange portion 71a is filled with an adhesive such as a heat conductive adhesive. 71 may be fixed to the light transmission hole 79a.

  The lens array 73 has a plate shape and 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 blue laser diodes 71 and parallels each light. A lens portion 73e, which is a plurality of collimator lenses that collect light as light, and a plate-like base portion 73a are integrally formed.

  The lens array 73 is positioned at the periphery of the plate-like base portion 73a by the first array holding portion 790b of the array holding body 791 and the second flat surface 790f of the second array holding portion 79b, thereby restricting the mounting position in the optical axis direction. Let it be fixed.

  Further, the side wall inside the light transmission hole 79a in the array holding body 791 located behind the lens array 73 can be used as a light guide side wall. For example, when the side wall 79e is mirror-finished, it is possible to reliably emit light forward from the hole by shining on each other.

  9 is a cross-sectional view of the excitation light irradiation device 70 in FIG. 6 taken along the line II-II. The fixing screws and the heat sink 81 are omitted from the drawing. As described above with reference to FIG. 7, the second partition 790d is provided so as to connect the two first array holding portions 790b to each other in the short side direction (row direction) of the array holder 791 (see FIG. 8). . Therefore, a gap surrounded by the lens array 73, the two second partition walls 790d, the first flat surface 790a, and the light emitting surface 71c shown in FIG. 9 is formed. Accordingly, since the space 790p where the lens array 73 and the light emitting surface 71c of the blue laser diode 71 are in contact is formed in the short side direction of the array holder 791, the excitation light irradiation device 70 has a space 790h through the array holder notch 790h. Connected to external space. In the present embodiment, a total of eight spaces 790p are formed in the short side direction. Each space 790p is connected to the outside of the excitation light irradiation device 70 via any one of the array holder cutouts 790h.

  As described above, in the present embodiment, the first array carrier 790b and the second array carrier 79b are provided to fix the lens array 73. The lens array 73 is fixed at a predetermined distance from the first flat surface 790a of the array holder 791 by the second flat surfaces of the first array holding portion 790b and the second array holding portion 79b. Therefore, the light transmission hole 79a is not sealed by mounting the lens array 73, and a space 790p connected to the outside of the excitation light irradiation device 70 is formed. As a result, heat generated by the blue laser diode 71, cutting oil volatilized from components such as the array holder 791, and the like can be released to the outside through the space 790p.

  In the present embodiment, the first partition 790c, the second partition 790d, and the third partition 790e are provided in the short side direction of the array holder 79. However, the present invention is not limited to this, and a plurality of first array carriers 790b are long. You may make it connect in a side direction. Further, the present invention is not limited to this, and the partition wall may be provided so as to connect an arbitrary number of first array holding portions 790b in an arbitrary direction.

  As described above, the space surrounded by the conventional array holder 791 and the lens array is in a sealed state, but the first array carrier 790b and the partition walls 790c, 790d, and 790e are arranged as in the present embodiment. Connected to the outside of the excitation light irradiation device 70, a space surrounded by the array holder 791 and the lens array 73 is formed so that air can flow in one direction (vertical direction). Therefore, air can be released between the lens array 73 and the blue laser diode 71 so that air flows. Further, by providing the first partition 790c, the second partition 790d, and the third partition 790e, air can be flowed in the vertical direction.

  The partition walls 790c to 790e form a second flat surface 790f that comes into contact with the lens array 73. Accordingly, the space 790p surrounded by the lens array 73, the partition walls 790c to 790e, the first flat surface 790a and / or the blue laser diode 71 is formed in the row direction and can carry the lens array 73. .

  In the present embodiment, the first array carrier 790b and the partition walls 790c, 790d, and 790e are arranged, but the present invention is not limited to this. The first array carrier 790b may have a semicircular arc shape protruding in the same direction in the column direction. In this case, the flow paths can have the same width by making the same side (one side) a semicircular arc shape with respect to the plurality of vertical partition walls. Thereby, air can be efficiently flowed up and down (row direction). Furthermore, only the partition walls 790c, 790d, and 790e may be provided without providing the first array carrier 790b. That is, a plurality of partition walls 790c, 790d, and 790e arranged in the column direction and extending in the row direction are arranged on the first flat surface 790a, and a gap is formed between the partition walls 790c, 790d, and 790e arranged in the column direction. Can be provided. Also in this case, the flow paths between the vertical partition walls 790c, 790d, and 790e and the adjacent vertical partition walls 790c, 790d, and 790e can have the same width, so that air can flow efficiently in the vertical direction. it can.

  In either case, since the narrow portion between the adjacent first array holding portions 790b can be eliminated, air can be efficiently flowed in the vertical direction.

[Embodiment 2]
Next, Embodiment 2 of the present invention will be described. In the present embodiment, an array holder 792 is used instead of the array holder 791 of the first embodiment. Other components of the excitation light irradiation device 70 are the same as those in the first embodiment. In the array holder 792 of the present embodiment, the same reference numerals are used for the same configurations as those of the array holder 791, and the description thereof is omitted.

  FIG. 10 is a perspective view of an array holder 792 according to the second embodiment. The entire array holding body 792 is formed in a substantially short shape, and a plurality of screw holes for fastening the heat sink 81, the light source holding body 80, the array holding body 79, the lens array 73, and the pressing plate 89 described above. And screw holes and a plurality of light transmission holes 79a through which light emitted from the blue laser diode 71 is transmitted on the first flat surface 790a.

  The array holder 792 of this embodiment includes a plurality of first array carriers 790b without providing the first partition 790c, the second partition 790d, and the third partition 790e of the array holder 791 in Embodiment 1. The first array carrier 790b is formed to stand substantially at the center of the region surrounded by the four lens holes 89a. In the present embodiment, 14 first array holding portions 790b are provided in a matrix of 2 rows and 7 columns, and the required first array holding portions 790b are provided with screw holes or screw holes. The array holding body 792 has an array holding body notch 790h on the outer periphery thereof. In the present embodiment, a total of eight array holder cutouts 790h are provided.

  11 is a cross-sectional view of the excitation light irradiation device 70 of FIG. 6 taken along the line II-II when the array holder 792 according to the second embodiment is used. The position of the lens array 73 is fixed by the array holder 790 b of the array holder 792, and a gap is provided between the lens array 73 and the array holder 792. For this reason, the space 790p in which the lens array 73 and the light emitting surface 71c are not in contact with each other is not partitioned by a partition wall. 70 is connected to the outside.

  As described above, in the present embodiment, the position of the lens array 73 is fixed by the first array holding part 790b and the second array holding part 79b without providing a partition wall. Therefore, the heat generated by the blue laser diode 71 and the cutting oil volatilized from the components such as the array holder 792 can be discharged to the outside through the space 790p and any one of the array holder cutouts 790h. .

[Embodiment 3]
Next, a third embodiment of the present invention will be described. In the present embodiment, an array holder 793 is used instead of the array holder 791 of the first embodiment or the array holder 792 of the second embodiment. Other components of the excitation light irradiation device 70 are the same as those in the first or second embodiment. In the array holder 793 of this embodiment, the same reference numerals are used for the same configurations as those of the array holder 791 or the array holder 792, and the description thereof is omitted.

  FIG. 12 is a perspective view of an array holder 792 according to the third embodiment. The entire array holding body 793 is formed in a substantially short shape, and a plurality of screw holes for fastening the heat sink 81, the light source holding body 80, the array holding body 79, the lens array 73, and the pressing plate 89 described above. And screw holes and a plurality of light transmission holes 79a for transmitting the light emitted from the blue laser diode 71.

  The array holder 793 of this embodiment is a third array holder for fixing the position of the lens array 73 without providing the array holder 790b of Embodiment 1 or the partition walls 790c-e of the array holder 791. 790q. The third array carrier 790q is provided on the first flat surface 790a so as to match the size of the lens array 73. The array holding body 793 has a second flat surface 790f that comes into contact with the flat surface of the lens array 73 so that the lens array 73 is fixed at a predetermined distance from the first flat surface 790a. The plurality of light transmission holes 79a are provided on the second flat surface 790f. The third array carrier 790q includes a plurality of concave grooves 790r to 790y. In the present embodiment, the groove portions 790 r to y are formed so as to connect the edges of the plurality of light transmission holes 79 a in the short side direction (row direction) of the array holding body 793. Further, the groove portions 790r to 790y have a bottom portion that is flush with the first flat surface 790a. Each light transmission hole 79a has two groove end portions 79z at the edge thereof and is connected to the other light transmission holes 79a by the groove portions. Further, the groove portions 790 r to t and 790 w to y are connected to a space outside the array holding body 793 through any one of the array holding body notch portions 790 h.

  FIG. 13 is a cross-sectional view taken along the line II-II of the excitation light irradiation device 70 of FIG. 6 when the array holder 793 according to the third embodiment is used. In the present embodiment, a gap surrounded by the lens array 73, the side wall 79e of the light transmission hole 79a, and the light emitting surface 71c of the blue laser diode 71 is formed. The space 790p where the lens array 73 and the light emitting surface 71c are in contact is connected to the outside of the excitation light irradiation device 70 through a groove 790v, for example. Also in the other rows, the space 790p where the lens array 73 and the light emitting surface 71c are in contact with each other is connected to the outside of the excitation light irradiation device 70 by the provided groove portions.

  Thus, in this embodiment, since the third array carrier 790q is provided instead of the first array carrier 790b and the partitions 790c to 790d, the flat surface 73d of the lens array 73 and the third array carrier 790q are provided. The contact surface of the second flat surface 790f can be increased. Therefore, the lens array 73 after fastening is less likely to be distorted by external pressure. In addition, when the array holder 793 is formed by cutting, the creation time can be reduced.

  In this embodiment, the groove portions 790r to 790y are provided so as to connect the light transmitting holes 79a in the row direction, but the present invention is not limited thereto, and the light transmitting holes 79a may be provided so as to connect in the column direction. . Further, other appropriate groove portions may be provided so that the space formed by each light transmitting hole 79a and the lens array 73 is connected to the outside of the excitation light irradiation device 70.

  As described above, according to the embodiment of the present invention, the array holders 791, 792, and 793 have the array holding portion that fixes the position of the lens array 73, and the array holder 79, the lens array 73, and the like. A space connected to the outside of the excitation light irradiation device 70 is formed between the two. Therefore, even if gas is generated from the array holder, the fogging of the light emitting surfaces of the lens array 73 and the blue laser diode 71 can be suppressed. Further, the adhesion between the lens array 73 and the array holding body is increased to provide high heat dissipation to the lens array.

  Further, a small number of blue laser diodes 71 are arranged in the row direction from the column direction. As a result, the length of one side of the array holder 791, 792, 793 is shortened, so that the distance until the space 790p is connected to the space outside the excitation light irradiation device 70 can be shortened. .

  The first array carrier 790b is provided with a screw hole or a screw hole. Accordingly, the first array carrier 790b can fasten and fix the lens array 73, the array holders 791, 792, 793, and the like while forming the space 790p.

  Further, a second array carrier 79 b is provided at the periphery of the array holders 791, 792, 793, and the lens array 73 is held by the presser plate 89. Thereby, the contact area between the lens array 73 and the pressing member can be widened to reduce the stress.

  Further, the blue laser diode 71 is sandwiched between the flange portions 71a. Thereby, the blue laser diode 71 can be stabilized and fixed, and the load on the vicinity of the light emitting surface 71c can be reduced.

  Further, the light source device 60, the display element 51, the projection side optical system 220, and the projection device control means are provided. Accordingly, it is possible to provide a projection apparatus that has a simple configuration and enhances the cooling effect of the light source and suppresses fogging of the light emitting surface of the lens and the light emitting element due to gas volatilized from the components.

  The embodiment described above is presented as an example, and is 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 spirit 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 equivalent scope thereof.

The invention described in the first claim of the present application will be appended below.
[1] A plurality of semiconductor light emitting elements arranged in a matrix of a plurality of rows and a plurality of columns;
A lens array for condensing the light emitted from the semiconductor light emitting element,
A plate-like array holder having a plurality of partition walls arranged in the column direction on the first flat surface and extending in the row direction; and a light transmission hole that is a through hole that transmits the emitted light of the semiconductor light emitting element;
With
The partition is
A second flat surface that is parallel to the first flat surface and is in contact with the lens array on the light emission direction side of the semiconductor light emitting element from the first flat surface;
There is a gap between the partition walls arranged at least in the column direction, and a space where the semiconductor light emitting element and the lens array are in contact is connected to the outside.
A light source device characterized by that.
[2] The array holding body includes a first array holding portion that holds the lens array on the first flat surface,
The above-mentioned [1], wherein the first array carrier is formed upright from the first flat surface in a region between one light transmission hole and the other light transmission hole. The light source device according to 1.
[3] The light source device according to [2], wherein the first array carrier is formed in a ring shape or a semicircular arc shape in the middle of the partition walls extending in a row direction.
[4] The plurality of semiconductor light emitting elements are arranged in a matrix of a plurality of rows and a plurality of columns,
The first array holding portion is provided to match the size of the lens array, and includes a plurality of the light transmission holes and a groove portion that connects the plurality of light transmission holes in a row direction.
The groove has a bottom that is flush with the first flat surface.
The light source device according to [2] above, wherein
[5] The light source device according to any one of [1] to [4], wherein the plurality of semiconductor light emitting elements are arranged with a smaller number in the row direction than in the column direction.
[6] The first array holding portion is screwed with a screw hole for inserting a screw for fastening and fixing the array holding body and the lens array or a screw for fastening and fixing the array holding body. The light source device according to any one of [2] to [5], wherein the light source device includes a screw hole.
[7] The array holding body is a third flat surface provided on the outer peripheral edge of the region where the lens array is placed on the first flat surface, on the light emission direction side of the second flat surface. A second array carrier having
A presser plate in contact with the third flat surface and sandwiching the lens array with the second flat surface;
The light source device according to any one of [1] to [6] above.
[8] The semiconductor light emitting element has a flange portion protruding outward at an outer peripheral portion on the rear side of the light emitting surface from which light is emitted,
A light source holder for fixing the semiconductor light emitting element by sandwiching the flange portion with the array holder;
The light source device according to any one of [1] to [7] above.
[9] The light source device according to any one of [1] to [8],
A display element for generating image light;
A projection-side optical system that projects image light emitted from the display element onto a screen;
Projection device control means for controlling the light source device and the display element;
A projection apparatus comprising:

DESCRIPTION OF SYMBOLS 10 Projector 11 Top panel 12 Front panel 13 Back panel 14 Right side panel 15 Left side panel 17 Exhaust hole 18 Intake hole 19 Lens cover 20 Terminal 21 Input / output connector part 22 Input / output interface 23 Image conversion part 24 Display encoder 25 Video RAM
26 Display drive unit 31 Image compression / decompression unit 32 Memory card 35 Ir reception unit 36 Ir processing unit 37 Key / indicator unit 38 Control unit 41 Light source control circuit 43 Cooling fan drive control circuit 45 Lens motor 47 Audio processing unit 48 Speaker 51 Display Element 60 Light source device 70 Excitation light irradiation device 71 Blue laser diode 71a Flange portion 71b Cylinder portion 71c Light emitting surface 71i Flange side surface 73 Lens array 73a Plate-like base portion 73c Flat surface 73d Flat surface 73e Lens portion 73j Second heat sink fixing screw hole 73n First lens fixing screw hole 73p Lens position fixing screw hole 75 Reflective mirror group 78 Condensing lens 79 Array holding body 79a Light transmitting hole 79b Second array carrying portion 79e Side wall 79h Second lens fixing screw screw hole 79i First Three heat sink Fixing screw hole 79j second heat sink fixing screw hole 79k first holder fixing screw hole 79m second holder fixing screw hole 79n first lens fixing screw hole 79p lens position fixing screw screw hole 79r third holder fixing screw Hole 79s fourth holder fixing screw hole 79v holder fixing screw recess 80 light source holder 80a plate body 80b protrusion 80c flange recess 80i third heat sink fixing screw hole 80j second heat sink fixing screw hole 80k first One holder fixing screw screw hole 80l Front surface of light source holder 80m Second holder fixing screw screw hole 80n First lens fixing screw screw hole 80p First heat sink fixing screw hole 80r Third holder fixing screw hole 80s Fourth holder Screw hole 81 for fixing screw Heat sink 82 Lens position fixing screw 83 Heat sink fixing G 84 Second lens fixing screw 87 First lens fixing screw 89 Presser plate 89a Lens hole 89f Plate body 89g Notch 89h Second lens fixing screw hole 89j Second heat sink fixing screw hole 89n First lens fixing screw Hole 89p Lens position fixing screw hole 90 Green light source device 100 Fluorescent plate device 101 Fluorescent plate 110 Motor 111 Condensing lens group 115 Condensing lens 120 Red light source device 121 Red light source 125 Condensing lens group 130 Heat sink 140 Light guide optical system 141 First Dichroic mirror 143 First reflecting mirror 145 Second reflecting mirror 146 Condensing lens 147 Condensing lens 148 Second dichroic mirror 149 Condensing lens 160 Projection side optical system 170 Light source side optical system 173 Condensing lens 175 Light tunnel 178 Condensing 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 401 Diffusion plate 790a First flat surface 790b First array carrier 790c First partition 790d Second partition 790e Third partition 790f Second flat surface 790g Third flat surface 790h Array holder notch 790p Space 790q Third array carrier 790r-y Groove 791, 792, 793 Array holder

Claims (9)

A plurality of semiconductor light emitting elements arranged in a matrix of a plurality of rows and a plurality of columns;
A lens array for condensing the light emitted from the semiconductor light emitting element,
A plate-like array holder having a plurality of partition walls arranged in the column direction on the first flat surface and extending in the row direction; and a light transmission hole that is a through hole that transmits the emitted light of the semiconductor light emitting element;
With
The partition is
A second flat surface that is parallel to the first flat surface and is in contact with the lens array on the light emission direction side of the semiconductor light emitting element from the first flat surface;
There is a gap between the partition walls arranged at least in the column direction, and a space where the semiconductor light emitting element and the lens array are in contact is connected to the outside.
A light source device characterized by that. The array holding body has a first array holding portion for holding the lens array on the first flat surface,
The said 1st array holding | maintenance part is standingly formed from said 1st flat surface in the area | region between one said light transmission hole and the said other light transmission hole, The said 1st array holding | maintenance part is characterized by the above-mentioned. The light source device described.   3. The light source device according to claim 2, wherein the first array carrier is formed in an annular shape or a semicircular arc shape in the middle of the partition walls extending in a row direction. The plurality of semiconductor light emitting elements are arranged in a matrix of a plurality of rows and a plurality of columns,
The first array holding portion is provided to match the size of the lens array, and includes a plurality of the light transmission holes and a groove portion that connects the plurality of light transmission holes in a row direction.
The groove has a bottom that is flush with the first flat surface.
The light source device according to claim 2.   5. The light source device according to claim 1, wherein the plurality of semiconductor light emitting elements are arranged so that the number in the row direction is smaller than the number in the column direction.   The first array carrier is a screw hole for inserting a screw for fastening and fixing the array holding body and the lens array, or a screw hole for screwing a screw for fastening and fixing the array holding body. The light source device according to any one of claims 2 to 5, further comprising: The array holding body has a third flat surface provided on the outer peripheral edge of the region on which the lens array is placed on the first flat surface, which is provided on the light emission direction side of the second flat surface. Having two array carrying parts,
A presser plate in contact with the third flat surface and sandwiching the lens array with the second flat surface;
The light source device according to claim 1, wherein the light source device is a light source device. The semiconductor light emitting element has a flange portion projecting outward on the outer peripheral portion on the rear side of the light emitting surface from which light is emitted
A light source holder for fixing the semiconductor light emitting element by sandwiching the flange portion with the array holder;
The light source device according to claim 1, wherein the light source device is a light source device. A light source device according to any one of claims 1 to 8,
A display element for generating image light;
A projection-side optical system that projects image light emitted from the display element onto a screen;
Projection device control means for controlling the light source device and the display element;
A projection apparatus comprising:

Images