JP6731142B2 - Light source device, projection device, and substrate mounting method for light source device - Google Patents

Description

The present invention relates to a light source device, a projection device, and a substrate mounting method for a light source device.

2. Description of the Related Art Today, a data projector is widely used as an image projection device that projects 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 a DMD (Digital Micromirror Device) or a liquid crystal plate to display a color image on a screen.

With the widespread use of video equipment such as personal computers and DVD players, projectors, which are projection devices, are expanding their applications from business presentations to home use. In such a projector, conventionally, a mainstream is a high-intensity discharge lamp as a light source, but in recent years, a solid-state light-emitting element such as a laser diode or a fluorescent plate having this solid-state light-emitting element as an excitation light source is provided as a light source. Various projectors have been developed.

For example, the projector of Patent Document 1 includes a plurality of laser light sources arranged in alignment, a lens array integrally having a lens corresponding to the laser light source, and a laser light transmission hole forming body. The laser beam transmitting hole forming body has a hole portion that faces the heat sink from the laser beam transmitting hole in which the laser light source is arranged. Each laser light source is connected to the laser light transmission hole forming body and the circuit board arranged between the heat sink via this hole.

In the projector as disclosed in Patent Document 1, the terminals of the plurality of laser light sources are collectively wired on the circuit board. Therefore, a plurality of terminal holes corresponding to the number of laser light sources to be connected are formed on the circuit board, and the terminals of the laser light source are inserted into the terminal holes.

JP, 2013-195843, A

The terminal of the light source element is usually connected to the circuit pattern on the substrate surface on the tip side of the terminal that penetrates the terminal hole. The diameter of the terminal hole is larger than that of the terminal of the laser light source so that the terminal can be easily inserted. However, when the diameter of the terminal hole becomes large, it is conceivable that the solder used for electrical bonding easily propagates through the terminal hole and easily wraps around to the surface on the light source element side, and the terminals are short-circuited. Further, if the terminal holes are made small in order to prevent the solder from wrapping around, it becomes difficult to align the terminals of the plurality of light source elements into the terminal holes.

In view of the above points, an object of the present invention is to provide a light source device, a projection device, and a substrate mounting method for a light source device in which a substrate can be easily mounted.

A light source device according to the present invention includes a circuit board having a first terminal hole through which a terminal of a solid-state light emitting element is inserted, and a rectangular oblong upper spacer having a plurality of second terminal holes smaller than the first terminal hole. The solid-state light-emission in a state in which the second terminal hole is associated with the first terminal hole, and the lower spacer piece having a rectangular long plate shape in which a plurality of the second terminal holes are formed. A spacer disposed between the element and the circuit board , wherein the upper spacer piece and the lower spacer piece extend toward the circuit board from a plate-shaped board holding portion and the board holding portion. a left fixing portion having a L-shaped projections, was, and the right fixing portion on the circuit board side has a substrate fixing portion of the L-shaped, the Ru is connected.
Another light source device according to the present invention has a rectangular elongated plate shape in which a circuit board having a first terminal hole through which a terminal of a solid state light emitting element is inserted and a plurality of second terminal holes smaller than the first terminal hole are formed. An upper spacer piece and a rectangular long plate-shaped lower spacer piece in which a plurality of the second terminal holes are formed, and the second terminal hole is made to correspond to the first terminal hole. A spacer disposed between the solid-state light-emitting element and the circuit board, wherein the upper spacer piece and the lower spacer piece have a left fixing portion having a left holding plate on the solid-state light-emitting element side, and the solid-state light-emitting element. It is connected by a right fixing portion having a right pressing plate on the element side.

A projection device according to the present invention is a projection device which projects the above-mentioned light source device, a display element which is irradiated with the light source light from the light source device to form image light, and the image light emitted from the display device onto a screen. It has a side optical system and a projection device control unit that controls the display element and the light source device.

A substrate mounting method for a light source device according to the present invention includes a circuit board, a rectangular elongated plate-shaped upper spacer piece and a lower spacer piece in which a plurality of second terminal holes are formed, and a solid-state light emitting element and the circuit board. And a spacer disposed between the upper spacer piece and the lower spacer piece, wherein the upper spacer piece and the lower spacer piece have a plate-like board pressing portion on the circuit board side and an L-shaped projection extending from the board pressing portion. When, a left securing portion and the circuit board mounting method of the connected Ru source device and the right fixing portion, by having a substrate fixing portion of the L-shaped side of the substrate having the said spacer to said circuit board a spacer fixing step of fixing the substrate for inserting the terminals of the solid-state light-emitting element, and inserted through having to the second terminal hole of minimum diameter than the first terminal hole of the circuit board is small the spacer, the first terminal hole fixing step and the terminal connecting step and the including of the terminals to the circuit and the solder joint formed on the circuit board.
Another substrate mounting method for a light source device according to the present invention has a circuit board, a rectangular long plate-shaped upper spacer piece and a lower spacer piece having a plurality of second terminal holes formed therein, A spacer arranged between the circuit board and the upper spacer piece and the lower spacer piece, wherein the upper spacer piece and the lower spacer piece have a left fixing portion having a left holding plate on the solid light emitting element side, and a right fixing portion on the solid light emitting element side. A method of mounting a substrate of a light source device connected by a right fixing portion having a holding plate, comprising: a spacer fixing step of fixing the spacer to the circuit board; A board fixing step of inserting the spacer into the second terminal hole of the spacer having a minimum diameter smaller than that of the one terminal hole, and inserting the terminal into the circuit formed on the circuit board by soldering. And a connecting step.

According to the present invention, it is possible to provide a light source device, a projection device, and a substrate mounting method for a light source device in which a substrate can be easily mounted.

It is an appearance perspective view showing the projection device concerning the embodiment of the present invention. It is a figure which shows the functional block of the projection apparatus which concerns on embodiment of this invention. It is a plane schematic diagram which shows the internal structure of the projection apparatus which concerns on embodiment of this invention. It is a perspective view of the excitation light irradiation apparatus which concerns on embodiment of this invention. It is an exploded perspective view of the excitation light irradiation device concerning the embodiment of the present invention. It is a front perspective view of the substrate concerning the embodiment of the present invention. It is a perspective view of the spacer which concerns on embodiment of this invention, (a) is a front perspective view, (b) is a rear perspective view. It is a back perspective view of the fixed holder concerning the embodiment of the present invention. FIG. 5 is a cross-sectional view of the main part of IX-IX of FIG. 4 of the excitation light irradiation device according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of the principal part of XX in FIG. 4 of the excitation light irradiation device according to the embodiment of the invention. FIG. 6 is a cross-sectional view of the main part of the excitation light irradiation device according to the embodiment of the present invention, taken along line XI-XI in FIG. 4. FIG. 11 is a partially enlarged cross-sectional view showing only a spacer and a substrate according to an embodiment of the present invention, (a) is a partially enlarged cross-sectional view of a P portion of FIG. 10, and (b) is a partially enlarged sectional view of a Q portion of FIG. 11. FIG.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of the projection device 10. In the present embodiment, the left and right of the projection device 10 refer to the left and right direction with respect to the projection direction, and the front and rear refer to the screen side direction of the projection device 10 and the front and back direction with respect to the traveling direction of the light beam bundle.

As shown in FIG. 1, the projection device 10 has a substantially rectangular parallelepiped shape. The projection device 10 has a lens cover 19 that covers the projection opening at the side of the front panel 12 that is a side plate in front of the housing. The front panel 12 is provided with a plurality of exhaust holes 17. Further, the projection device 10 includes an Ir reception unit (not shown) that receives a control signal from a remote controller.

A key/indicator portion 37 is provided on the top panel 11 of the housing. The key/indicator section 37 is provided with a power switch key, a power indicator for notifying on/off of a power source, a projection switch key for switching on/off of projection, a notification when a light source device, a display element, a control circuit, or the like is overheated. A key or indicator such as an overheat indicator is placed.

An input/output connector section and a power adapter on the rear surface of the housing, in which a USB terminal and a D-SUB terminal for inputting a video signal for inputting an analog RGB video signal, an S terminal, an RCA terminal, an audio output terminal, etc. are provided on the back panel. Various terminals (group) 20 such as plugs are provided. 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 housing (not shown), and the left side panel 15, which is the side plate shown in FIG. Further, an intake hole 18 is formed in a corner of the left panel 15 near the rear panel.

Next, the projection device control unit of the projection device 10 will be described with reference to the functional block diagram of FIG. The projection device control unit 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 projection apparatus 10, and is configured by a CPU, a ROM fixedly storing operation programs such as various settings, and a RAM used as a work memory. There is.

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

Further, the display encoder 24 expands 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 a display element control unit, and drives the display element 51, which is a spatial light modulator (SOM), at an appropriate frame rate in accordance with the image signal output from the display encoder 24. ..

The projection device 10 forms a light image by the reflected light of the display element 51 by irradiating the display element 51 with the light flux emitted from the light source device 60 through the optical system on the light source side. The image is projected and displayed on the screen via. 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/expansion 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 sequentially written in a memory card 32 which is a removable recording medium.

Further, the image compression/decompression unit 31 reads the image data recorded in the memory card 32 in the reproduction mode, decompresses each image data forming a series of moving images in 1-frame units, and converts this image data into an image conversion. It outputs to the display encoder 24 via the unit 23 and performs processing that enables display of a moving image based on the image data stored in the memory card 32.

Then, the operation signal of the key/indicator unit 37 including the main key and the indicator provided on the top panel 11 of the housing is directly sent to the control unit 38, and the 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.

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, and converts the sound data into an analog signal in the projection mode and the reproduction mode, and drives the speaker 48 to emit a loud sound.

The control unit 38 also controls a light source control circuit 41 as a light source control unit. The light source control circuit 41 outputs red, green, and blue wavelength band light from the excitation light source and the red light source device at a predetermined timing so that light in a predetermined wavelength band required at the time of image generation is emitted from the light source device 60. Performs individual control to cause light emission.

Further, the control unit 38 causes the cooling fan drive control circuit 43 to detect the temperature by 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 result of the temperature detection. Further, the control unit 38 causes the cooling fan drive control circuit 43 to continue the rotation of the cooling fan even after the power of the main body of the projection apparatus 10 is turned off by a timer or the like, or depending on the result of the temperature detection by the temperature sensor, the main body of the projection apparatus 10 is controlled. It also controls the power off.

Next, the internal structure of the projection device 10 will be described. FIG. 3 is a schematic plan view showing the internal structure of the projection device 10. The projection device 10 includes a control circuit board 241 near the right panel 14. The control circuit board 241 includes a power supply circuit block, a light source control block, and the like. In addition, the projection device 10 includes a light source device 60 in a substantially central portion of the housing of the projection device 10. A light source side optical system 170 and a projection side optical system 220 are arranged between the light source device 60 and the left side panel 15.

The light source device 60 is a red light source device 120 serving as a red wavelength band light source, a green light source device 80 serving as a green wavelength band light source, and a blue light source device serving as a blue wavelength band light source. An excitation light irradiation device 70 also serving as an excitation light source. The green light source device 80 includes an excitation light irradiation device 70 and a fluorescent plate device 100. The light source device 60 has a light guide optical system 140. The light guiding optical system 140 combines the light fluxes of the green wavelength band light, the blue wavelength band light, and the red wavelength band light, and guides them on the same optical path of the light source side optical system 170.

The excitation light irradiation device 70 is arranged on the right panel 14 side of the housing of the projection device 10. The excitation light irradiation device 70 includes a plurality of solid-state light emitting elements arranged so that their optical axes are parallel to the back panel 13. The solid state light emitting device of this embodiment is a blue laser diode 71 that emits light in the blue wavelength band. The blue laser diode 71 is arranged in parallel with the right panel 14. These blue laser diodes 71 are fixed to a fixed holder 74. The excitation light irradiation device 70 also includes a reflection mirror 76, a diffusion plate 78, and a heat sink 81. The reflection mirror 76 converts the optical axis of the light emitted from each blue laser diode 71 by 90 degrees toward the diffusion plate 78. The diffusion plate 78 diffuses the emitted light from each blue laser diode 71 reflected by the reflection mirror 76 at a predetermined diffusion angle. The heat sink 81 is arranged between the blue laser diode 71 and the right panel 14.

On the optical path from each blue laser diode 71, a collimator lens array 73 that increases the directivity of the emitted light from the blue laser diode 71 and converts it into parallel light is arranged. The collimator lens array 73 is fixed to the fixed holder 74 together with the blue laser diode 71.

The red light source device 120 includes a red light source 121 arranged so that the optical axis of the light flux of the blue laser diode 71 is parallel to the light flux, and a condenser lens group 125 that condenses light emitted from the red light source 121. .. The red light source 121 is a red light emitting diode that is a solid-state light emitting element that emits light in the red wavelength band. The red light source device 120 is arranged such that the optical axis of the red wavelength band light emitted from the red light source device 120 intersects with the optical axis of the green wavelength band light emitted from the fluorescent plate 101. Further, the red light source device 120 includes a heat sink 130 on the right panel 14 side of the red light source 121.

The fluorescent plate device 100 that constitutes the green light source device 80 includes a fluorescent plate 101, a motor 110, an incident-side condenser lens group 117, and an emission-side condenser lens 115. The fluorescent plate 101 is a fluorescent wheel arranged so as to be orthogonal to the optical axis of the light emitted from the excitation light irradiation device 70. The fluorescent plate 101 is rotationally driven by a motor 110. The condenser lens group 117 condenses the light flux of the excitation light emitted from the excitation light irradiation device 70 on the fluorescent plate 101. The condenser lens 115 condenses the light flux emitted from the fluorescent plate 101 toward the front panel 12.

On the fluorescent plate 101, a fluorescent emission region and a diffuse transmission region are arranged side by side in the circumferential direction. The fluorescent light emitting region receives the blue wavelength band light emitted from the blue laser diode 71 as excitation light, and emits the excited green wavelength band fluorescent light. The diffuse transmission region diffuses and transmits the light emitted from the blue laser diode 71. The emitted light diffused and transmitted is emitted as blue wavelength band light of the light source device 60.

The light guide optical system 140 includes a first dichroic mirror 141, a condenser lens 149, a second dichroic mirror 148, a first reflection mirror 143, a condenser lens 146, a second reflection mirror 145, and a condenser lens 147. The first dichroic mirror 141 is located at a position where 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 intersect with the red wavelength band light emitted from the red light source device 120. Is located in. The first dichroic mirror 141 transmits blue wavelength band light and red wavelength band light and reflects green wavelength band light. The optical axis of the green wavelength band light reflected by the first dichroic mirror 141 is converted by 90 degrees toward the left panel 15 toward the condenser lens 149. Therefore, the optical axis of the red wavelength band light transmitted through the first dichroic mirror 141 matches the optical axis of the green wavelength band light reflected by the first dichroic mirror 141.

The condenser lens 149 is arranged on the left panel 15 side of the first dichroic mirror 141. The red wavelength band light transmitted through the first dichroic mirror 141 and the green wavelength band light reflected by the first dichroic mirror 141 both enter the condenser lens 149. The second dichroic mirror 148 is arranged 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 and transmits the blue wavelength band light. Therefore, the red wavelength band light and the green wavelength band light condensed by the condenser lens 149 are reflected by the second dichroic mirror 148, and the condenser lens 173 arranged on the rear panel 13 side of the second dichroic mirror 148. Incident on.

The first reflection mirror 143 is arranged on the optical axis of the blue wavelength band light transmitted through the fluorescent plate 101, that is, between the condenser lens 115 and the front panel 12. The first reflection mirror 143 reflects the blue wavelength band light and converts the optical axis of the blue wavelength band light by 90 degrees in the left panel 15 direction. The condenser lens 146 is arranged on the left panel 15 side of the first reflection mirror 143. The second reflection mirror 145 is arranged on the left panel 15 side of the condenser lens 146. The second reflection mirror 145 converts the optical axis of the blue wavelength band light reflected by the first reflection mirror 143 and condensed by the condenser lens 146 by 90 degrees to the rear panel 13 side. The condenser lens 147 is arranged on the rear panel 13 side of the second reflection mirror 145. The blue wavelength band light reflected by the second reflection mirror 145 is transmitted through the second dichroic mirror 148 via the condenser lens 147 and is incident on the condenser lens 173. In this way, the light beam bundles of the red, green, and blue wavelength bands guided by the light guiding optical system 140 are guided on the same optical path of the light source side optical system 170.

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 179, a condenser lens 183, an irradiation mirror 185, and a condenser lens 195. Since the condenser lens 195 emits the image light emitted from the display element 51 arranged on the rear panel 13 side of the condenser lens 195 toward the projection side optical system 220, part of the projection side optical system 220. But also.

Each ray bundle emitted from the condenser lens 173 enters the light tunnel 175. Each light bundle incident on the light tunnel 175 becomes a light bundle having a uniform intensity distribution by the light tunnel 175.

An optical axis conversion mirror 179 is arranged on the optical axis of the light tunnel 175 on the rear panel 13 side via a condenser lens 178. The light flux emitted from the emission port of the light tunnel 175 is condensed by the condenser lens 178 and then converted by the optical axis conversion mirror 179 into an optical axis toward the condenser lens 183.

The light flux reflected by the optical axis conversion mirror 179 is condensed by the condenser lens 183, and then is irradiated by the irradiation mirror 185 onto the display element 51 via the condenser lens 195 at a predetermined angle. A heat sink 190 is provided on the rear panel 13 side. The display element 51, which is a DMD, is cooled by the heat sink 190.

The light flux, which is the light source light emitted 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 as projection light on the screen via the projection side optical system 220. To be done.

The projection side optical system 220 includes a condenser lens 195, a movable lens group 235, and a fixed lens group 225. The fixed lens group 225 is built in the fixed lens barrel. The movable lens group 235 is built in the movable lens barrel and is manually or automatically moved to enable zoom adjustment and focus adjustment.

By configuring the projection device 10 as described above, 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, red, green, and blue wavelength band lights are emitted. The light enters the light tunnel 175 through the light guiding optical system 140 and further enters the display element 51 through the light source side optical system 170. Therefore, the DMD, which is the display element 51 of the projection device 10, time-divisionally displays light of each color according to the data, so that a color image can be projected on the screen.

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. The excitation light irradiation device 70 has a heat sink 81, a circuit board 50, a spacer 90, a fixed holder 74, a collimator lens array 73, and a lens stopper 72. Further, these members are arranged in the order of the heat sink 81, the circuit board 50, the spacer 90, the fixed holder 74, the collimator lens array 73, and the lens stopper 72 from the rear to the front. In the description of the excitation light irradiation device 70, the side where the lens stopper 72 is arranged is the front and the side where the heat sink 81 is arranged is the rear. In addition, the upper side of FIGS. 4 and 5 is the upper side, the opposite side is the lower side, the left side when looking from the rear to the front is the left side, and the opposite side is the right side.

In FIG. 5, the heat sink 81 has a projecting U-shaped frame portion 811 behind the excitation light irradiation device 70, and an L-shaped frame portion 812 formed above the front upper end of the U-shaped frame portion 811. A plate-shaped flange portion 813 extends downward from the front lower end of the U-shaped frame portion 811. A fin 811a is formed rearward from the rear surface of the central vertical plate of the U-shaped frame portion 811. A mounting surface 815 is provided on the front surface of the central vertical plate of the U-shaped frame portion 811. Fins 812a are formed rearward from the rear surface of the L-shaped frame portion 812. Fins 812b are formed downward from the upper plate of the L-shaped frame portion 812. A duct plate 814 is formed downward from the front end of the L-shaped frame portion 812. Therefore, the fin 812b is formed in a U-shaped space formed by the duct plate 814 and the L-shaped frame portion 812.

FIG. 6 is a front perspective view of the circuit board 50. As the circuit board 50 of the present embodiment, a PCB board formed of an insulating material such as resin or glass epoxy resin is used. The circuit board 50 has a power supply connection portion 52 and a light source connection portion 53. The power supply connecting portion 52 is formed in a rectangular plate shape and has a connector 521 on the front surface side. The connector 521 is connected to the control circuit board 241 of FIG. 3 by a wiring cable (not shown). A circular fixing hole 522 is formed at a corner of the power source connecting portion 52 on the light source connecting portion 53 side.

The light source connection part 53 is formed in a substantially rectangular shape having a longitudinal direction on the left and right. The vertical width of the light source connecting portion 53 is formed narrower than the vertical width of the power source connecting portion 52. The light source connecting portion 53 has two rectangular through holes 531 at approximately the center in the vertical direction. The connection plate 534 is arranged between the two through holes 531. A circular fixing hole 535 for fixing the circuit board 50 to the fixing holder 74 of FIG. 5 is provided substantially at the center of the connecting plate 534. The through hole 531 is formed such that the longitudinal direction thereof is the longitudinal direction of the light source connecting portion 53. A rectangular cutout 532a is formed on the right inner edge of the right through hole 531a. Further, a rectangular cutout portion 532b is also formed on the left inner edge of the left through hole 531b. By arranging the through hole 531 in the light source connecting portion 53, the wiring portion 533 including the upper wiring portion 533a and the lower wiring portion 533b is formed. Therefore, the upper wiring portion 533a and the lower wiring portion 533b are formed in a rectangular elongated plate shape in the left-right direction. The upper wiring portion 533a and the lower wiring portion 533b are connected at the upper and lower sides by a connection plate 534 at approximately the center in the left-right direction.

A first terminal hole 55 corresponding to the blue laser diode 71 is formed in the upper wiring portion 533a and the lower wiring portion 533b. In this embodiment, two first terminal holes 55 are formed corresponding to one blue laser diode 71. The plurality of first terminal holes 55 provided in the upper wiring portion 533a are formed on a straight line in the longitudinal direction of the light source connecting portion 53, and the plurality of first terminal holes 55 provided in the lower wiring portion 533b are also formed in the light source connecting portion 53. Are arranged on a straight line in the longitudinal direction of. In this way, four pairs of the first terminal holes 55 are arranged in each of the upper wiring portion 533a and the lower wiring portion 533b.

Cutouts 541a and 541b, which are cutouts long in the left and right, are formed at the upper edge of the upper wiring portion 533a. Further, cutout portions 542a and 542b, which are cutouts long in the left-right direction, are formed at the lower edge of the lower wiring portion 533b. Both end edges of the cutouts 541a, 541b, 542a, 542b are formed in a concave curve. One notch 541a at the upper end is provided above the connection plate 534 and slightly on the power supply connection 52 side. Further, the other cutout portion 541b at the upper end is provided closer to the power supply connecting portion 52 than the cutout portion 541a. One notch 542a at the lower end is provided below the connection plate 534 and slightly opposite to the power supply connection 52. Further, the other cutout portion 542b at the lower end is provided on the opposite side of the power supply connection portion 52 from the cutout portion 542a.

A circuit pattern (not shown) is formed on the circuit board 50. The connector 521 and each first terminal hole 55 provided in the wiring portion 533 are electrically connected by this circuit. In the present embodiment, two first terminal holes 55 corresponding to one blue laser diode 71 are arranged close to each other. One of these two first terminal holes 55 is used for a positive electrode terminal and the other is used for a negative electrode terminal. Each set of the first terminal holes 55 is connected in series or in parallel with each other and connected to a power source via the connector 521. By making the circuit board 50 a multilayer board or a single layer board, the circuit pattern can be provided on the rear surface side, the front surface side, or the inside of the circuit board 50 shown in FIG. 6.

Around the first terminal hole 55 connected to the circuit pattern, a land is formed on one surface of the circuit board 50 on the rear surface side. Alternatively, the lands can be formed on both the front surface side and the rear surface side of the circuit board 50. Further, on the inner wall of the first terminal hole 55, electrodes may be provided that are connected to the circuits on the front surface side and the rear surface side of the circuit board 50.

FIG. 7A is a front perspective view of the spacer 90. Further, FIG. 7B is a rear perspective view of the spacer 90. In FIG. 7A, the spacer 90 is formed in a rectangular long plate shape with the left and right as the longitudinal direction. The spacer 90 has a non-interference hole 91 in the center in the longitudinal direction. Due to the non-interference holes 91, the spacer 90 is formed with a spacer piece 92 composed of an upper spacer piece 92a and a lower spacer piece 92b having a rectangular plate shape having a longitudinal direction on the left and right. The left ends of the upper spacer piece 92a and the lower spacer piece 92b are connected by the left fixing portion 93. The right ends of the upper spacer piece 92a and the lower spacer piece 92b are connected by a right fixing portion 94. The spacer 90 is formed of an insulating material such as resin.

Four terminal placement portions 95 are formed on each of the spacer pieces 92a and 92b. The terminal placement portion 95 is formed in a substantially disc shape. Therefore, the terminal placement portion 95 is formed such that a part of the upper side of the circular edge projects from above the spacer piece 92 and a part of the lower side of the circular edge projects from below the spacer piece 92. The terminal placement portion 95 has a circular second terminal hole 951 at a substantially center in the vertical direction. Two second terminal holes 951 are arranged close to each other in the longitudinal direction of the spacer 90 in each terminal arrangement portion 95.

Further, as shown in FIG. 7B, a countersunk portion 952 having a long axis in the longitudinal direction of the spacer 90 is formed on the rear surface side of the terminal placement portion 95. The edge portion of the counterbore portion 952 is formed in a long hole shape when seen in a plan view from the rear. On the back surface side of the spacer 90, the second terminal hole 951 is arranged on the bottom surface 953 of the counterbore portion 952. The pair of second terminal holes 951 corresponding to the pair of terminals 711 of the blue laser diode 71 are formed in one counterbore 952. The bottom surface 953 of the counterbore 952 and the back surface 921 of the spacer piece 92 are formed substantially parallel to each other. Further, the counterbore portion 952 is formed such that the bottom area (the area of the bottom surface 953 including the second terminal hole 951) is larger than the areas of the first terminal hole 55 and the second terminal hole 951.

The left fixing portion 93 is formed with a vertical width narrower than the width between the upper end of the upper spacer piece 92a and the lower end of the lower spacer piece 92b. In FIG. 7A, the left fixing portion 93 has a left pressing plate 931 which is provided upright on the front side. The left pressing plate 931 is formed in the vertical direction from the upper end to the lower end of the left fixing portion 93. Further, the left fixing portion 93 has a plate-like substrate pressing portion 932 which is provided upright on the rear side, as shown in FIG. 7B. The substrate pressing portion 932 is formed vertically from the upper end to the lower end of the left fixing portion 93. At the rear end of the substrate pressing portion 932, L-shaped protrusions 933a and 933b are formed from the upper end and the lower end, respectively. The upper L-shaped projection 933a is formed by extending upward from the substrate pressing portion 932 and then bending rightward. The lower L-shaped projection 933b is formed by extending downward from the substrate pressing portion 932 and then bending rightward. Further, the left fixing portion 93 has a rectangular cutout portion 934 on the inner edge on the left side of the non-interference hole 91.

The right fixing portion 94 is formed with a width narrower than the width of the upper end of the upper spacer piece 92a and the lower end of the lower spacer piece 92b. As shown in FIG. 7A, the right fixing portion 94 has a right pressing plate 941 which is provided upright on the front side of the right end portion. The right pressing plate 941 is formed vertically from the upper end to the lower end of the right fixing portion 94. A concave groove portion 942 is provided on the front end surface of the right presser plate 94. The groove portion 942 is provided substantially at the center in the vertical direction.

A rectangular through hole 943 is formed on the right side of the non-interference hole 91. Therefore, a beam-shaped boundary portion 944 is formed between the non-interference hole 91 and the through hole 943 and extends between the upper spacer piece 92a and the lower spacer piece 92b. As shown in FIG. 7B, a board fixing portion 945 that is erected on the rear side is formed on the boundary portion 944. The vertical width of the substrate fixing portion 945 is formed narrower than the vertical widths of the non-interference hole 91 and the through hole 943. The board fixing portion 945 has a rear end bent rightward and is formed in an L-shaped plate shape in a plan view seen from above (see FIG. 9 ).

Next, the fixed holder 74 will be described. In FIG. 5, the fixed holder 74 is formed in a substantially rectangular parallelepiped shape having long axes on the left and right. When viewed from the front as viewed from the front, fixing grooves 741 in which fixing holes 741a are provided are formed at the four corners of the fixing holder 74. A fixing member such as a screw 801 is inserted into the fixing hole 741a. The fixing holder 74 and the heat sink 81 are fixed by screwing the screw 801 into a screw hole 815 a provided in the mounting surface 815 of the heat sink 81. A leaf spring 804 having a lower end bent forward is provided between the head of the screw 801 inserted into the lower fixing hole 741a of the fixed holder 74 and the fixed holder 74 (see FIG. 11). ). Further, at the right end and the left end of the fixed holder 74, fixing holes 742a and 742b penetrating from the front surface to the rear surface of the fixed holder 74 are formed. The right fixing hole 742a is formed in a long hole shape. Further, a fixing hole 742c penetrating from the front surface to the rear surface of the fixed holder 74 is also formed substantially at the center in the left-right direction of the fixed holder 74. The fixed holder 74 has a circular groove-shaped light source fixing portion 743 for inserting the blue laser diode 71 on the front surface side. In this embodiment, the light source fixing parts 743 are arranged in a matrix of 2 rows and 4 columns.

FIG. 8 is a rear perspective view of the fixed holder 74. The fixed holder 74 has a lateral groove 744 composed of two lateral grooves 744a and 744b on the back surface side. Each of the lateral grooves 744a and 744b is arranged on the back surface side of the light source fixing portion 743. Therefore, one lateral groove 744 corresponds to the plurality of light source fixing portions 743 arranged in one row. A circular groove 744c is formed in a part of the lateral groove 744 on the back surface side of the light source fixing portion 743. The upper inner edge of the circular groove 744c is located above the upper inner edge of the lateral groove 744, and the lower inner edge of the circular groove 744c is located below the lower inner edge of the lateral groove 744. The bottom surface 75a of the circular groove 744c is formed with a long hole-shaped through hole 745 having a long axis on the left and right. The inner diameters of the long axis and the short axis of the through hole 745 are formed smaller than the inner diameter of the light source fixing portion 743 provided on the front side of the fixed holder 74.

A right vertical groove 746a and a left vertical groove 746b are formed between the upper lateral groove 744a and the lower lateral groove 744b at the right end portion and the left end portion of the fixed holder 74. The bottom surface 75b of each of the right vertical groove 746a and the left vertical groove 746b is formed in a counterbore shape. Therefore, the bottom surface 75b of the right vertical groove 746a and the left vertical groove 746b is formed in a rectangular shape lower than the bottom surface 75a of the horizontal grooves 744a and 744b. The right fixing hole 742a of the fixing holder 74 is provided on the bottom surface 75b of the right vertical groove 746a, and the left fixing hole 742b is provided on the bottom surface 75c of the left vertical groove 746b.

A central vertical groove 747 that connects the upper lateral groove 744a and the lower lateral groove 744b in a concave groove shape is formed substantially at the center in the left-right direction of the fixed holder 74. The bottom surface 75d of the central vertical groove 747 is formed higher than the bottom surface 75a of the lateral grooves 744a, 744d. A fixing hole 742c penetrating from the front side of the fixing holder 74 is provided on the bottom surface 75d of the central vertical groove 747. As shown in FIG. 9, the fixing hole 742c is formed such that the bottom surface 75d side is formed as a screw hole and the front surface side of the fixed holder 74 is formed as a through hole having a larger diameter than the screw hole.

Returning to FIG. 5, the collimator lens array 73 has a plurality of convex lens portions 731 (731a, 731b) and is formed in a substantially rectangular plate shape. The lens portion 731 is arranged so that the position when viewed from the front corresponds to the position of the light source fixing portion 743. Therefore, the lens portion 731 is formed in a matrix of 2 rows and 4 columns.

The lens stopper 72 is a plate-shaped cover for fixing the collimator lens array 73 to the heat sink 81. The lens stopper 72 has a front plate 721 and a side plate 722 (an upper side plate 722a and a lower side plate 722b). The front plate 721 has a plurality of lens holes 723 through which the lens portion 731 is inserted. A plurality of substantially rectangular fixing protrusions 723a are formed on the inner edge of the lens hole 723. The front plate 721 is formed in a U-shape that is convex forward when viewed from the left and right.

The side plates 722 extend from the upper and lower ends of the U-shaped front plate 721. A through hole 724 is formed at a boundary portion between the front plate 721 and the side plate 722 at substantially the center in the left-right direction. A rectangular notch 725 is formed at the lower end of the lower side plate 722b. The lens stopper 72 has fixing holes 726 at the four corners when viewed from the front. That is, the fixing hole 726 is formed in the side plates 722a and 722b. The lens stopper 72 fixes the collimator lens array 73 by screwing a fixing member such as a screw 802 inserted through the fixing hole 726 into screw holes 813 a and 812 c formed in the heat sink 81.

Next, a state in which the respective members of the excitation light irradiation device 70 are combined will be described. FIG. 9 is a sectional view of an essential part of the IX-IX of the excitation light irradiation device 70 of FIG. This figure shows a cross section at a position between the lens portion 731a in the upper row and the lens portion 731b in the lower row of the collimator lens array 73 in FIG.

The spacer 90 shown in FIG. 4 is fixed to the circuit board 50 by the left fixing portion 93 and the right fixing portion 94. The left end of the light source connecting portion 53 of the circuit board 50 is sandwiched in the front-rear direction by the rear surface 93a of the left fixing portion 93 and the front surface 933c of the L-shaped projection 933b. The right side of the light source connection portion 53 of the circuit board 50 is sandwiched in the front-rear direction by the rear surface 94a of the right fixing portion 94 and the front surface 945a of the substrate fixing portion 945. The rear surface 933d of the L-shaped projection 933 and the rear surface 945d of the substrate fixing portion 945 are formed on substantially the same plane.

The circuit board 50 is fixed to the fixing holder 74 by inserting the screw 803 into the fixing hole 535 provided in the connection plate 534 and screwing the screw 803 into the fixing hole 742c of the central vertical groove 747.

FIG. 10 is a cross-sectional view of the XX main part of the excitation light irradiation device 70 of FIG. This figure shows a cross section at the position of the blue laser diode 71 corresponding to the lens portion 731 in the upper row of the collimator lens array 73 in FIG. The spacer 90 is arranged between the circuit board 50 and the fixed holder 74 in a state where the second terminal hole 951 corresponds to the first terminal hole 55. The upper spacer piece 92a of the spacer 90 shown in the figure is arranged on the bottom surface 75a of the lateral groove 744a of the fixed holder 74. The lower spacer piece 92b shown in FIG. 7 is arranged on the bottom surface 75a of the lower lateral groove 744b of the fixed holder 74 shown in FIG.

The blue laser diode 71 is fixed in a light source fixing portion 743 formed on the front side of the fixed holder 74. The two terminals 711 of the blue laser diode 71 are inserted into the through holes 745 of the fixed holder 74. Further, on the heat sink 81 side of the fixed holder 74, each terminal 711 is inserted into the second terminal hole 951 of the spacer 90 and the first terminal hole 55 of the circuit board 50. In this way, the terminal 711 of the blue laser diode 71 is arranged at the position of the circular groove 744c of the lateral groove 744a. Further, the lateral groove 815b of the heat sink 81 is arranged on the rear side of the terminal 711.

FIG. 11 is a cross-sectional view of the XI-XI main part of the excitation light irradiation device 70 of FIG. This drawing shows a vertical cross section of the blue laser diode 71 corresponding to the second lens unit 731 from the left of the collimator lens array 73 at the position of the terminal 711 on the left side. As shown in FIG. 11, the terminals 711 of the blue laser diodes 71 arranged in the upper row are arranged such that the vertical positions of the terminals 711 are substantially at the centers of the through hole 745, the circular groove 744c, and the lateral groove 815b. Similarly, the vertical positions of the terminals 711 of the blue laser diodes 71 arranged in the lower row are arranged so as to be substantially at the centers of the through hole 745, the circular groove 744c, and the lateral groove 815b.

When fixing the fixing holder 74 shown in FIG. 9 to the heat sink 81, the leaf spring 804 (see FIGS. 5 and 5) together with the screw 801 (see FIG. 5) inserted into the lower fixing hole 741a (see FIG. 8). 11) is used. The leaf spring 804 has a bent portion 804a bent forward, and the bent portion 804a abuts the inner surface 811b of the heat sink 81 below the U-shaped frame portion 811. Therefore, the fixed holder 74 shown in FIG. 9 is biased upward. Accordingly, the fixed holder 74 is fixed while abutting on the inner surface 811c on the upper side of the U-shaped frame portion 811 and the mounting surface 815 which is the inner surface on the rear side.

FIG. 12A is a partially enlarged cross-sectional view of the portion P in FIG. 10, showing only the spacer 90 and the circuit board 50. Further, FIG. 12B is a partially enlarged cross-sectional view of the Q portion of FIG. 11, showing only the spacer 90 and the circuit board 50. 12A corresponds to an enlarged view around the second terminal hole 951 and the first terminal hole 55 through which the terminal 711 of the second blue laser diode 71 from the bottom shown in FIG. 10 is inserted. Further, FIG. 12B corresponds to an enlarged view around the second terminal hole 951 and the first terminal hole 55 through which the terminal 711 of the upper blue laser diode 71 shown in FIG. 11 is inserted.

The second terminal hole 951 of the spacer 90 is formed as a taper-shaped round hole. The second terminal hole 951 is formed such that the diameter of the front opening 951a on the blue laser diode 71 side (left side in FIG. 12A) is larger than the diameter of the rear opening 951b on the circuit board 50 side. The first terminal hole 55 of the circuit board 50 is formed as a round hole. The first terminal hole 55 is formed such that the front opening 55a on the spacer 90 side and the rear opening 55b on the heat sink 81 side (right side in FIG. 12B) have substantially the same diameter. The minimum diameter of the second terminal hole 951 of the spacer 90 is smaller than the diameter of the first terminal hole 55 of the circuit board 50. Further, the maximum diameter of the second terminal hole 951 of the spacer 90 is formed larger than the diameter of the first terminal hole 55 of the circuit board 50. Since the second terminal hole 951 of this embodiment is formed in a tapered shape, the diameter of the rear port 951b of the second terminal hole 951 of the spacer 90 is the same as that of the front port 55a of the first terminal hole 55 of the circuit board 50. The diameter is smaller than the diameter of the rear port 55b. The shape of the second terminal hole 951 is not limited to a circular shape and may be a polygonal shape. The diameter of the front opening 951a of the second terminal hole 951 of the spacer 90 is formed larger than the diameters of the front opening 55a and the rear opening 55b of the first terminal hole 55 of the circuit board 50.

Further, in FIG. 12B, the center position of the first terminal hole 55 of the circuit board 50 is arranged above the center position of the second terminal hole 951 of the spacer 90. Regarding the second terminal hole 951 and the first terminal hole 55 through which the terminal 711 of the lower blue laser diode 71 shown in FIG. 11 is inserted, the center position of the first terminal hole 55 of the circuit board 50 is the spacer 90. It is arranged below the center position of the second terminal hole 951.

As shown in FIGS. 12A and 12B, the counterbore 952 is arranged between the second terminal hole 951 of the spacer 90 and the first terminal hole 55 of the circuit board 50. The depth d2 of the counterbore 952 is formed to be substantially the same as the depth d1 of the second terminal hole 951 of the spacer 90. The side wall 952a of the countersunk portion 952 is formed outside the front opening 951a of the second terminal hole 951 with respect to the center of the countersunk portion 952. Therefore, in the countersunk portion 952, a space S1 which is an escape portion apart from the center of the countersunk portion 952 is provided between the side wall 952a and the second terminal hole 951 and the first terminal hole 55.

Next, a method of mounting the excitation light irradiation device 70 will be described. First, a spacer fixing step of fixing the spacer 90 to the circuit board 50 is performed. In the spacer fixing step, as shown in FIG. 9, the L-shaped protrusion 933 on the left fixing portion 93 of the spacer 90 is engaged with the left end portion of the circuit board 50 from above, below or left of the circuit board 50. To be done. The board fixing portion 945 of the right fixing portion 94 of the spacer 90 is inserted into the cutout portion 532 a of the circuit board 50 from the front. As a result, the spacer 90 and the circuit board 50 are fixed.

Next, a circuit board fixing step of fixing the circuit board 50 to which the spacer 90 is fixed to the fixing holder 74 is performed. As shown in FIG. 10, the blue laser diode 71 is previously inserted into the light source fixing portion 743 of the fixing holder 74. Therefore, the plurality of terminals 711 of the blue laser diode 71 project to the back surface side through the through holes 745 of the fixed holder 74.

In the substrate fixing step, the terminal 711 of the blue laser diode 71 is inserted into the second terminal hole 951 of the spacer 90. Since the front port 951a shown in FIG. 12 is formed with a larger diameter than the rear port 951b, the second terminal hole 951 allows the terminal 711 to be easily inserted. Further, the rear opening 951b is arranged substantially in the center of the first terminal hole 55 of the circuit board 50. Therefore, the terminal 711 inserted through the second terminal hole 951 of the spacer 90 can be easily inserted into the first terminal hole 55 of the circuit board 50.

When the insertion of the terminal 711 of the blue laser diode 71 into the second terminal hole 951 and the first terminal hole 55 is completed, the front surface of the spacer 90 is the bottom surface of the lateral groove 744 a of the fixed holder 74, as shown in FIGS. 10 and 11. It contacts with 75a. Then, the screw 803 is screwed into the fixing hole 742c of the fixing holder 74 through the fixing hole 535 of the circuit board 50, and the circuit board 50 and the spacer 90 are fixed to the fixing holder 74.

In the terminal connecting step, the terminals 711 inserted through the second terminal holes 951 and the first terminal holes 55 of the circuit board 50 and the spacer 90 are electrically connected to the circuit formed on the circuit board 50. The terminal 711 and the circuit board 50 are soldered automatically or manually. In the case of automatic joining, for example, by immersing the surface of the circuit board 50 on the tip side of the terminal 711 in a high temperature solder bath, the solder can be attached to the terminal 711 and the land on the circuit board 50. The solder attached to the terminal 711 and the land is solidified at room temperature, and the terminal 711 and the circuit of the circuit board 50 are connected.

When an electrode is provided in the first terminal hole 55 of the circuit board 50, the melted solder may flow in the first terminal hole 55 and flow into the blue laser diode 71 side, that is, the spacer 90 side. Even in such a case, since the spacer 90 is provided with the counterbore portion 952, it is possible to prevent the inflow of solder from interfering with the adhesion between the circuit board 50 and the spacer 90. Further, even when electrodes such as lands are arranged on the periphery of the first terminal hole 55 on the spacer 90 side of the circuit board 50, the space S1 in the counterbore portion 952 is secured, so that the circuit board 50 is secured. It is possible to prevent the close contact between the spacer 90 and the spacer 90 from being hindered.

In the holder fixing step, the fixed holder 74 to which the spacer 90 and the circuit board 50 are fixed is fixed to the heat sink 81. As shown in FIG. 5, the fixing holder 74 is fixed by inserting the screws 801 into the fixing holes 741a formed at the four corners and screwing the screws 801 into the screw holes 815a of the heat sink 81.

Then, in the lens fixing step, the collimator lens array 73 is fixed to the front side of the fixing holder 74 by the lens stopper 72. The lens stopper 72 is fixed by inserting a screw into the fixing hole 726 and screwing the screw into the screw holes 812c and 813c of the heat sink 81.

As described above in each of the embodiments, the light source device 60 and the projection device 10 include the circuit board 50 having the first terminal hole 55 into which the terminal 711 of the blue laser diode 71, which is a solid-state light emitting element, is inserted; A spacer 90 having a second terminal hole 951 smaller than the terminal hole 55. Further, the spacer 90 is arranged between the blue laser diode 71 and the circuit board 50 in a state where the second terminal hole 951 corresponds to the first terminal hole 55. Therefore, the terminal 711 can be guided to the position of the first terminal hole 55 and easily inserted into the first terminal hole 55. Therefore, the substrate can be easily attached. Further, since the minimum diameter of the second terminal hole 951 is formed smaller than the diameter of the first terminal hole 55, it is possible to prevent the solder from flowing out from the circuit board 50 side of the spacer 90 to the blue laser diode 71 side. it can. Moreover, the clearance between the terminal 711 and the first terminal hole 55 can be reduced.

In the light source device 60 in which the diameter of the second terminal hole 951 on the side of the blue laser diode 71 is larger than the diameter of the side on the circuit board 50, the terminal 711 is connected to the first terminal as compared with the case of being directly inserted into the first terminal hole 55. It can be easily inserted into the hole 55. Moreover, since the terminal 711 can be easily inserted into the second terminal hole 951, the first terminal hole 55 can have a smaller diameter. Therefore, the board width of the circuit board 50 such as the upper wiring portion 533a and the lower wiring portion 533b in which the first terminal holes 55 are formed is reduced, and a large number of contact portions between the fixed holder 74, which is a heat source, and the heat sink 81 are provided. You can Further, since the diameter of the second terminal hole 951 on the circuit board 50 side can be reduced, it is possible to prevent the solder from flowing around to the blue laser diode 71 side of the second terminal hole 951 and short-circuiting the terminals 711. it can.

The light source device 60 in which the maximum diameter of the second terminal hole 951 is larger than the diameter of the first terminal hole 55 allows the terminal 711 to be inserted into the first terminal hole 55 more easily than when directly inserted into the first terminal hole 55. be able to.

The light source device 60 in which the spacer 90 has the counterbore portion 952 whose bottom area is larger than the area of the first terminal hole 55 and the area of the second terminal hole 951 on the circuit board 50 side is the front end side of the terminal 711 on the circuit board 50. When soldering the circuit pattern to the circuit pattern, even when the solder reaches the spacer 90 side along the first terminal hole 55, the counterbore portion 952 functions as a solder pool. Even when the solder wraps around to the spacer 90 side through the first terminal hole 55 in this way, or when the land of the circuit board 50 is provided on the surface of the spacer 90 side, the solder or the electrode is not included in the spacer 90. You can prevent it from interfering with. Further, since the counterbore portion 952 functions as a solder pool, it is possible to prevent the solder from flowing out to the blue laser diode 71 side.

Further, the light source device 60 in which the pair of second terminal holes 951 corresponding to the pair of terminals 711 of the blue laser diode 71 are formed in one counterboring portion 952 is the circuit board corresponding to the position of the second terminal hole 951. The space with 50 can be formed by the number of counterbore portions 952 smaller than the number of second terminal holes 951. Therefore, the counterbore 952 can be easily provided with a small number of steps.

In addition, the light source device 60 in which the land is formed on the peripheral edge of the first terminal hole 55 on one side or both sides of the circuit board 50 includes the terminal 711 of the blue laser diode 71 and the circuit pattern formed on the circuit board 50. The connection can be made on one side or both sides of the substrate 50.

Further, in the light source device 60 in which the electrode is formed on the inner wall of the first terminal hole 55, when the blue laser diode 71 and the circuit pattern of the circuit board 50 are solder-bonded, a wide bonding area can be secured. Therefore, the bonding strength can be increased. Moreover, the electrical resistance at the junction can be reduced.

Further, the spacer 90 has an upper spacer piece 92a and a lower spacer piece 92b in the shape of a rectangular plate in which a plurality of second terminal holes 951 are formed, and the upper spacer piece 92a and the lower spacer piece 92b are left fixing portions 93. The light source device 60 connected by the right fixing portion 94 and the right fixing portion 94 has one terminal arrangement portion 95 provided between the fixed holder 74 and the circuit board 50 at a plurality of positions where the terminals 711 of the blue laser diode 71 are arranged. It can be configured by a member. Further, the fixed holder 74 and the heat sink 81 can be brought into contact with each other in the space between the upper spacer piece 92a and the lower spacer piece 92b.

The left fixing portion 93 has a plate-shaped board pressing portion 932 and an L-shaped protrusion 933 extending from the board pressing portion 932 on the circuit board 50 side, and the right fixing portion 94 is an L-shaped plate shape on the circuit board 50 side. In the light source device 60 having the board fixing portion 945, the spacer 90 can be easily fixed to the circuit board 50.

The light source device 60 in which the left fixing portion 93 has the left pressing plate 931 on the blue laser diode 71 side and the right fixing portion 94 has the right pressing plate 941 on the blue laser diode 71 side, the spacer 90 is attached to the circuit board 50. It can be easily fixed.

The circuit board 50 has a rectangular elongated plate-shaped upper wiring portion 533a and a lower wiring portion 533b in which a plurality of first terminal holes 55 are formed. The upper wiring portion 533a and the lower wiring portion 533b are connected by a connection plate 534. In the connected light source device 60, the fixed holder 74 and the heat sink 81 can be brought into contact with each other in the space between the upper wiring portion 533a and the lower wiring portion 533b. In addition, the circuit board 50 can be connected to the fixed holder 74 at approximately the center of the circuit board 50.

The light source device 60 including the fixed holder 74 in which the blue laser diode 71 is arranged and the circuit board 50 is fixed by the connection plate 534 can be configured by the solid-state light emitting element, the spacer 90, and the circuit board 50 as one member.

The substrate mounting method of the light source device 60 including the circuit board 50 and the spacer 90 arranged between the blue laser diode 71 and the circuit board 50 includes a spacer fixing step, a board fixing step, and a terminal connecting step, including. In the board fixing step, the terminal 711 of the blue laser diode 71 is inserted into the second terminal hole 951 of the spacer 90 having the smallest diameter smaller than that of the first terminal hole 55 of the circuit board 50, and then inserted into the first terminal hole 55. Therefore, the circuit board 50 can be easily attached.

A PCB (Printed Circuit Board) substrate made of glass epoxy resin or the like is used as the circuit board 50. Therefore, the circuit board 50 has a high withstand voltage. Therefore, even when a high voltage is applied between the patterns on the circuit board 50, the dielectric breakdown can be prevented.

The embodiments described above are presented as examples, 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 spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are also included in the invention described in the claims and the equivalent scope thereof.

Further, in the present embodiment, since one blue laser diode 71 has two terminals 711, one counterbore 952 provided on the spacer 90 has a second terminal hole 951 and a first terminal. Although two holes 55 are provided, when one light emitting element such as the blue laser diode 71 has three or more terminals, three or more terminal holes are provided for one countersunk portion 952. It may be provided. Further, the terminals of two or more light emitting elements may be inserted into a plurality of terminal holes corresponding to the counterbore portion and connected to the circuit of the circuit board 50.

Further, the second terminal hole 951 of the spacer 90 of the present embodiment has a tapered shape in which the diameter of the front opening 55a on the blue laser diode 71 side is larger than the diameter of the rear opening 951b on the circuit board 50 side. You don't have to. For example, it may have a minimum diameter in the middle of the second terminal hole 951. If the diameter is smaller than the diameter of the first terminal hole 55, the diameter of the front opening 951a of the second terminal hole 951 located on the blue laser diode 71 side is the same as the diameter of the rear opening 951b located on the circuit board 50 side. You may form so.

Further, in the present embodiment, the counterbore portion 952 is provided corresponding to the second terminal hole 951 of the terminal 711 of one blue laser diode 71, but a plurality of terminals 711 of the plurality of blue laser diodes 71 are inserted. The second terminal hole 951 may be included. For example, in FIG. 7B, the counterbore 952 can be formed in an elliptical shape including eight second terminal holes 951 in each of the upper spacer piece 92a and the lower spacer piece 92b. Thereby, the number of steps for providing the counterbore 952 can be reduced.

The inventions described in the first claims of the present application will be additionally described below.
[1] A circuit board having a first terminal hole through which a terminal of the solid-state light emitting element is inserted,
A spacer having a second terminal hole smaller than the first terminal hole, the spacer being arranged between the solid-state light emitting device and the circuit board in a state where the second terminal hole corresponds to the first terminal hole. When,
A light source device comprising:
[2] The light source device according to the above [1], wherein the second terminal hole is formed such that a diameter on the solid light emitting element side is larger than a diameter on the circuit board side.
[3] The light source device according to the above [1] or [2], wherein the maximum diameter of the second terminal hole is larger than the diameter of the first terminal hole.
[4] The spacer includes, on the circuit board side, a counterbore portion having a bottom area larger than the area of the first terminal hole and the area of the second terminal hole. [3] The light source device according to any one of [3].
[5] The light source device according to [4], wherein the pair of second terminal holes corresponding to the pair of terminals of the solid-state light emitting element are formed in one of the counterbore portions.
[6] The light source device according to any one of the above [1] to [5], wherein lands are formed on the periphery of the first terminal hole on one side or both sides of the circuit board.
[7] The light source device according to any one of [1] to [6], wherein an electrode is formed on the inner wall of the first terminal hole.
[8] The spacer has a rectangular long plate-shaped upper spacer piece and a lower spacer piece in which a plurality of the second terminal holes are formed,
The upper spacer piece and the lower spacer piece are connected by a left fixing portion and a right fixing portion,
The light source device according to any one of the above [1] to [7].
[9] The left fixing portion includes a plate-shaped board pressing portion on the circuit board side, and an L-shaped protrusion extending from the board pressing portion,
The right fixing portion has an L-shaped board fixing portion on the circuit board side,
The light source device according to the above [8].
[10] The left fixing portion has a left holding plate on the solid light emitting element side,
The right fixing portion has a right holding plate on the solid light emitting element side,
The light source device according to the above [8] or [9].
[11] The circuit board has a rectangular long plate-shaped upper wiring portion and a lower wiring portion in which a plurality of the first terminal holes are formed,
The upper wiring portion and the lower wiring portion are connected by a connection plate,
The light source device according to any one of the above [1] to [10].
[12] The light source device according to the above [11], further comprising a fixing holder on which the solid-state light emitting element is arranged and the circuit board is fixed by the connection plate.
[13] The light source device according to any one of [1] to [12] above,
Light source light from the light source device is irradiated, a display element that forms image light,
A projection side optical system that projects the image light emitted from the display element onto a screen,
A projection device control unit that controls the display element and the light source device;
A projection device comprising:
[14] A method of mounting a light source device on a substrate, comprising: a circuit substrate; and a spacer arranged between the solid-state light emitting element and the circuit substrate,
A spacer fixing step of fixing the spacer to the circuit board;
A terminal of the solid-state light-emitting element is inserted into a second terminal hole of the spacer having a minimum diameter smaller than the first terminal hole of the circuit board, and a board fixing step of inserting the terminal into the first terminal hole,
A terminal connecting step of solder-joining the terminal to a circuit formed on the circuit board;
A method for mounting a light source device on a substrate, comprising:

10 Projector 11 Top Panel 12 Front Panel 13 Rear Panel 14 Right Panel 15 Left Panel 17 Exhaust Hole 18 Intake Hole 19 Lens Cover 21 Input/Output Connector Section 22 Input/Output Interface 23 Image Converter 24 Display Encoder 25 Video RAM
26 display drive section 31 image compression/expansion section 32 memory card 35 Ir reception section 36 Ir processing section 37 key/indicator section 38 control section 41 light source control circuit 43 cooling fan drive control circuit 45 lens motor 47 audio processing section 48 speaker 50 circuit Substrate 51 Display element 52 Power source connection portion 53 Light source connection portion 55 First terminal hole 55a Front opening 55b Rear opening 60 Light source device 70 Excitation light irradiation device 71 Blue laser diode 72 Lens stopper 73 Collimator lens array 74 Fixed holder 75a to 75d Bottom surface 76 Reflection mirror 78 Diffusion plate 80 Green light source device 81 Heat sink 90 Spacer 91 Non-interference hole 92a (92) Upper spacer piece 92b (92) Lower spacer piece 93 Left fixing portion 93a surface 94 Right fixing portion 94a surface 95 Terminal arrangement portion 100 Fluorescent plate device 101 Fluorescent Plate 110 Motor 115 Condensing Lens 117 Condensing Lens Group 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 170 Light source side optical system 173 Condensing lens 175 Light tunnel 178 Condensing lens 179 Optical axis conversion mirror 183 Condensing lens 185 Irradiating mirror 190 Heat sink 195 Condenser lens 220 Projecting side Optical system 225 Fixed lens group 235 Movable lens group 241 Control circuit board 521 Connector 522 Fixed hole 531 Through hole 531a Through hole 531b Through hole 532a Notched portion 532b Notched portion 533 Wiring portion 533a Upper wiring portion 533b Lower wiring portion 534 Connection plate 535 Fixed Holes 541a, 541b Cutouts 542a, 542b Cutouts 711 Terminals 721 Front plates 722 Side plates 722a Side plates 722b Side plates 723 Lens holes 723a Fixing projections 724 Through holes 725 Cutouts 726 Fixing holes 731 (731a, 731a 174) Fixing groove 74 Lens parts Holes 742a to 742c Fixing hole 743 Light source fixing portion 744 Horizontal groove 744a Horizontal groove 744b Horizontal groove 744c Circular groove 744d Horizontal groove 745 Through hole 746a Right vertical groove 746b Left vertical groove 747 Central vertical grooves 801 to 803 Screw 804 Leaf spring 804a Bending portion 811 U-shaped frame portion 811a Fin 811b Inner surface 811c Inner surface 812 L-shaped frame portion 812a, 812b Fin 812c Screw hole 813 Flange portion 813a Screw hole 813c Screw plate 81514 Mounting surface 815a Screw hole 815b Lateral groove 921 Back surface 931 Left pressing plate 932 Substrate pressing portion 933 (933a, 933b) L-shaped projection 933c surface 933d Rear surface 934 Notch portion 941 Right pressing plate 942 Groove portion 943 Through hole 944 Boundary portion 945 a Surface 945d Rear surface 951 Second terminal hole 951a Front opening 951b Rear opening 952 Counterbore 952a Side wall 953 Bottom surface S1 space

Claims (13)

A circuit board having a first terminal hole through which the terminal of the solid-state light-emitting element is inserted;
A rectangular elongated plate-shaped upper spacer piece having a plurality of second terminal holes smaller than the first terminal hole, and a rectangular elongated plate-shaped lower spacer piece having a plurality of the second terminal holes formed. A spacer arranged between the solid-state light emitting device and the circuit board in a state where the second terminal hole is made to correspond to the first terminal hole,
Equipped with
The upper spacer piece and the lower spacer piece have a left fixing portion having a plate-shaped board pressing portion on the circuit board side and an L-shaped projection extending from the board pressing portion, and the circuit board side. light source device comprising a right fixing portion, the Rukoto are connected by having the substrate fixing portion of the L-shaped in. A circuit board having a first terminal hole through which the terminal of the solid-state light-emitting element is inserted;
A rectangular elongated plate-shaped upper spacer piece having a plurality of second terminal holes smaller than the first terminal hole, and a rectangular elongated plate-shaped lower spacer piece having a plurality of the second terminal holes formed. A spacer arranged between the solid-state light emitting device and the circuit board in a state where the second terminal hole is made to correspond to the first terminal hole,
Equipped with
The upper spacer piece and the lower spacer piece are connected by a left fixing portion having a left holding plate on the solid light emitting element side and a right fixing portion having a right holding plate on the solid light emitting element side. Characteristic light source device. The light source device according to claim 1 or 2 , wherein the second terminal hole is formed such that a diameter on the solid-state light emitting element side is larger than a diameter on the circuit board side. Wherein the maximum diameter of the second terminal hole, the light source device according to any one of claims 1 to 3, characterized in that greater than a diameter of the first terminal hole. The spacer, on the circuit board side, one of claims 1 to 4, characterized in that it has the area and the larger seat Repetitive unit bottom area than the area of the second terminal hole of the first terminal hole The light source device according to. The light source device according to claim 5 , wherein the pair of second terminal holes corresponding to the pair of terminals of the solid-state light emitting element are formed in one counterbored portion. In one or both sides of the circuit board, the light source apparatus according to any one of claims 1 to 6, characterized in that the land is formed on the periphery of the first terminal hole. The light source device according to any one of claims 1 to 7 , wherein an electrode is formed on an inner wall of the first terminal hole. The circuit board has a rectangular elongated plate-shaped upper wiring portion and a lower wiring portion in which the plurality of first terminal holes are formed,
The upper wiring portion and the lower wiring portion are connected by a connection plate,
The light source device according to any one of claims 1 to 8, characterized in that. The light source device according to claim 9 , further comprising a fixed holder on which the solid-state light emitting element is arranged and the circuit board is fixed by the connection plate. A light source device according to any one of claims 1 to 1 0,
Light source light from the light source device is irradiated, a display element that forms image light,
A projection side optical system that projects the image light emitted from the display element onto a screen,
A projection device control unit that controls the display element and the light source device;
A projection device comprising: A circuit board, a rectangular elongated plate-shaped upper spacer piece and a lower spacer piece having a plurality of second terminal holes formed therein, and a spacer arranged between the solid-state light-emitting element and the circuit board. The upper spacer piece and the lower spacer piece have a left fixing portion having a plate-shaped board pressing portion on the circuit board side and an L-shaped projection extending from the board pressing portion; and the circuit board. a substrate mounting method of a light source device and a right fixing portion having a substrate fixing portion of the L-shaped in side by Ru is connected,
A spacer fixing step of fixing the spacer to the circuit board;
Wherein the terminals of the solid state light emitting devices, and are inserted into the second terminal hole of the circuit the spacer smallest diameter is smaller than the first terminal hole of the substrate, and the substrate fixing step for inserting into the first terminal hole,
A terminal connecting step of solder-joining the terminal to a circuit formed on the circuit board;
A method of mounting a light source device on a substrate, comprising: A circuit board, a rectangular elongated plate-shaped upper spacer piece and a lower spacer piece having a plurality of second terminal holes formed therein, and a spacer arranged between the solid-state light-emitting element and the circuit board. A light source in which the upper spacer piece and the lower spacer piece are connected by a left fixing portion having a left holding plate on the solid light emitting element side and a right fixing portion having a right holding plate on the solid light emitting element side. A method for mounting a board on a device,
A spacer fixing step of fixing the spacer to the circuit board;
A terminal of the solid-state light-emitting element is inserted into the second terminal hole of the spacer having a minimum diameter smaller than the first terminal hole of the circuit board, and a board fixing step of inserting the terminal into the first terminal hole,
A terminal connecting step of solder-joining the terminal to a circuit formed on the circuit board;
A method of mounting a light source device on a substrate, comprising:

Images