Electronic device, light source device, and projection device

Abstract

To provide a sealing member, an electronic device, a light source device, and a projection device capable of suppressing poor seating while enhancing workability of mounting of a fixed object member to a fixed portion.SOLUTION: A light source device includes: a display element that is a fixed object member; a light source case including a fixed portion to which the display element is fixed; and a packing 90 whose inner peripheral surface 91b abuts on the fixed object member, whose outer peripheral surface 91a abuts on the fixed portion, and which seals a space between the display element and the fixed portion. The packing 90 has a pressing unit 94 that is projectingly provided on the inner peripheral surface 91b and presses the display element. Between the inner peripheral surface 91b and the pressing unit 94, a gap S1 is provided that allows elastic deformation of the pressing unit 94 toward the inner peripheral surface 91b side. The pressing unit 94 is elastically deformed toward the inner peripheral surface 91b side.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a sealing member, an electronic device, a light source device, and a projection device. [Background technology]

[0002] Conventionally, electronic devices such as projection devices that project images formed using a micromirror display element called DMD (Digital Micromirror Device) or a liquid crystal plate onto a screen have been proposed. For example, the projection device of Patent Document 1 is attached to a fixed part of a housing by compressing a sealing member arranged in the insertion direction of the fixing target member, which is a holder equipped with a semiconductor light emitting element and a lens array. This makes it possible to reliably position the light source device relative to the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-66625 A Summary of the Invention [Problem to be solved by the invention]

[0004] A holder equipped with a display element in a projection device requires high positioning accuracy when mounting the holder. When the fixing target member, which requires high positioning accuracy, is positioned between the fixing target member and the fixing portion of the housing in advance and the fixing target member is inserted so as to compress the seal member, the fixing target member may not fit into the seating position of the fixing portion, resulting in poor seating.

[0005] The present invention aims to provide a sealing member, an electronic device, a light source device, and a projection device that can improve the ease of attachment to a fixed portion of a fixing target member while suppressing seating problems. [Means for solving the problem]

[0006] The electronic device according to one aspect of the present invention includes a case including a fixing target member and a fixing portion to which the fixing target member is fixed. , before The above-mentioned fixed parts An inner circumferential surface having a pressing portion that presses the Contact with the fixed portion and an outer peripheral surface and a sealing member that seals the gap between the fixing target member and the fixed portion. ,before Between the inner circumferential surface and the pressing portion Between A gap is provided, and the pressing portion is The fixing member is provided on the inner peripheral surface of the fixing member, and is elastically deformable. When the fixing member is pressed against the fixing member, the fixing member is deformed by a reaction force from the fixing member. Elastically deformed toward the inner circumferential surface The fixed portion has a positioning member that positions the fixing target member with respect to the fixed portion inside the sealing member, and the pressing portion is provided at a position overlapping with the positioning member in a pressing direction of the pressing portion. It is characterized by the fact that Effect of the Invention

[0007] According to the present invention, it is possible to provide a sealing member, an electronic device, a light source device, and a projection device that can improve the ease of attachment to a fixed portion of a fixing target member while suppressing seating problems. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram showing functional circuit blocks of the projection device according to the embodiment. [Diagram 2] FIG. 2 is a plan view illustrating an internal structure of the projection device according to the embodiment. [Diagram 3] FIG. 2 is a schematic plan view of the inside of a light source case of the projection device according to the embodiment. [Figure 4] FIG. 2 is an exploded perspective view showing a state in which a display element according to an embodiment is attached to a light source case. [Diagram 5] FIG. 2 is a front view of the packing according to the embodiment. [Figure 6] 6 is a cross-sectional view of a main portion of the packing according to the embodiment in a width direction, showing a cross section along the line VI-VI in FIG. 5. [Figure 7] 11 is a front view seen from the central axis direction of the packing, illustrating a state before a display element is inserted into the packing according to the embodiment attached to a fixed portion. FIG. [Figure 8]13 is a front view seen from the central axis direction of the packing, showing a state in which a display element is inserted into the packing according to the embodiment attached to a fixed portion. FIG. [Figure 9] 9 is a cross-sectional view showing a state in which a display element is inserted into the packing according to the embodiment, and is a cross-sectional view showing a cross section along line IX-IX in FIG. 8. [Figure 10] 10 is an enlarged cross-sectional view of a main part of a portion surrounded by a dashed line in FIG. 9. [Figure 11] FIG. 2 is an exploded perspective view showing a state in which the excitation light emitting device according to the embodiment is attached to a light source case. [Figure 12] 10 is a partial cross-sectional view showing a state in which a holding plate of the excitation light emitting device is inserted into a packing according to the embodiment. FIG. [Figure 13] FIG. 11 is a cross-sectional view of a main part of a packing according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a functional circuit block diagram of a projection device (electronic device) 10. The projection device control unit includes a CPU including an image conversion unit 23 and a control unit 38, a front-end unit including an input / output interface 22, and a formatter unit including a display encoder 24 and a display drive unit 26. Image signals of various standards input from an input / output connector unit 21 are converted by the image conversion unit 23 via the input / output interface 22 and a system bus SB so as to be unified into image signals of a predetermined format suitable for display, and then output to the display encoder 24.

[0010] Furthermore, the display encoder 24 develops and stores the input image signal in a video RAM 25, generates a video signal from the stored contents of the video RAM 25, and outputs the video signal to a display driver .

[0011] The display drive unit 26 drives the display element (fixed target member) 50, which is a spatial light modulation element (SOM), at an appropriate frame rate in response to the image signal output from the display encoder 24. The projection device 10 forms an optical image with the reflected light from the display element 50 by irradiating the light beam emitted from the light source device (electronic device) 60 to the display element 50 via a light guide optical system 140 (see FIG. 3), and projects and displays the image on a projection target such as a screen (not shown) via a projection optical system 220 (see FIG. 2). The movable lens group 235 of the projection optical system 220 can be driven by a lens motor 45 for zoom adjustment and focus adjustment.

[0012] Moreover, 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 compressed by processes such as ADCT and Huffman coding, and the data is written sequentially to a memory card 32, which is a removable recording medium. Furthermore, the image compression / expansion unit 31 reads out the image data recorded on the memory card 32 in the playback mode, expands each piece of image data constituting a series of moving images on a frame-by-frame basis, and outputs the expanded data to the display encoder 24 via the image conversion unit 23. Thus, the image compression / expansion unit 31 can output moving images, etc., based on the image data stored in the memory card 32.

[0013] The control unit 38 is responsible for controlling the operation of each circuit in the projection device 10, and is composed of a CPU, a ROM in which operating programs such as various settings are permanently stored, a RAM used as a work memory, and the like.

[0014] The key / indicator section 37 is composed of a main key and an indicator provided on the housing. An operation signal of the key / indicator section 37 is directly sent to the control section 38. In addition, a key operation signal from the remote controller is received by the Ir receiving section 35, demodulated into a code signal by the Ir processing section 36, and output to the control section 38.

[0015] The control unit 38 is connected to an audio processing unit 47 via a system bus SB. The audio processing unit 47 includes a sound source circuit such as a PCM sound source, and converts audio data into analog data in the projection mode and the playback mode, and drives a speaker 48 to emit amplified sound.

[0016] The control unit 38 controls the light source control circuit 41. The light source control circuit 41 individually controls the operation of the excitation light irradiating device of the light source device 60 so that light in a predetermined wavelength band required for image generation is emitted from the light source device 60.

[0017] Furthermore, the control unit 38 causes the cooling fan drive control circuit 43 to detect temperatures using a plurality of temperature sensors provided in the light source device 60, etc., and controls the rotation speed of the cooling fan based on the results of this temperature detection. The control unit 38 also controls the cooling fan drive control circuit 43 to continue rotating the cooling fan using a timer or the like even after the power to the projection device 10 body is turned off, or to turn off the power to the projection device 10 body depending on the results of temperature detection by the temperature sensors.

[0018] Next, the internal structure of the projection device 10 will be described. Fig. 2 is a schematic plan view showing the internal structure of the projection device 10. Here, the housing of the projection device 10 is formed in a substantially box shape, and includes an upper surface, a lower surface, a front panel 12, a rear panel 13, a right panel 14, and a left panel 15. In the following description, the left and right of the projection device 10 refer to the left and right directions relative to the projection direction from the projection port 12a, and the front and rear refer to the screen side direction of the projection device 10 and the front and rear directions relative to the traveling direction of the light beam.

[0019] The projection device 10 includes a power supply device 301, a control circuit board 302, and a light source device 60. The projection device 10 also includes an intake fan 260, an intake fan 270, and an exhaust fan 280 as cooling fans.

[0020] The light source device 60 is disposed approximately in the center of the housing of the projection device 10. The light source device 60 accommodates optical components such as a light source, a lens, and a mirror inside the light source device 60 using a light source case 61. The power supply device 301 is disposed on the left panel 15 side of the light source device 60. The board of the power supply device 301 is disposed approximately parallel to the left panel 15. The control circuit board 302 is disposed on the rear panel 13 side of the light source device 60. The control circuit board 302 is disposed approximately perpendicular to the up-down direction. The control circuit board 302 includes a power supply circuit block, a light source control block, and the like. In addition, a plurality of control circuit boards 302 may be provided, each divided according to function, such as the power supply circuit block and the light source control block.

[0021] Here, the internal structure of the light source device 60 will be described. Fig. 3 is a schematic plan view showing the inside of a light source case 61 of the light source device 60. The light source device 60 includes a red light source device 120 which is a light source of red wavelength band light, a green light source device 80 which is a light source of green wavelength band light, and an excitation light irradiating device 70 which is a blue light source device which is a light source of blue wavelength band light and also an excitation light source. The green light source device 80 is composed of the excitation light irradiating device 70 and a fluorescent plate device 100. The light source device 60 has a light guiding optical system 140. The light guiding optical system 140 combines light beams of the green wavelength band light, the blue wavelength band light, and the red wavelength band light, and guides the light beams of each color wavelength band along the same optical path.

[0022] The excitation light irradiation device 70 is disposed on the right panel 14 side of the housing of the projection device 10 (see FIG. 2). The excitation light irradiation device 70 includes a plurality of semiconductor light-emitting elements disposed so that their optical axes are parallel to the rear panel 13. The semiconductor light-emitting elements of this embodiment are a plurality of blue laser diodes 71 that emit light in the blue wavelength band. The plurality of blue laser diodes 71 are also disposed parallel to the right panel 14. These blue laser diodes 71 are fixed to a holding plate (fixed target member) 74. A total of eight blue laser diodes 71 are provided on the holding plate 74 in two rows and four columns.

[0023] Furthermore, the excitation light irradiation device 70 includes a reflecting mirror 76, a diffusing plate 78, and a heat sink 81. The reflecting mirror 76 changes the optical axis of the light emitted from each blue laser diode 71 by approximately 90 degrees toward the diffusing plate 78. The diffusing plate 78 diffuses the light emitted from each blue laser diode 71 reflected by the reflecting mirror 76 at a predetermined diffusion angle. The heat sink 81 is disposed between the blue laser diode 71 and the right panel 14 (see FIG. 2). A collimator lens 73 that increases the directivity of the light emitted from the blue laser diode 71 and converts it into parallel light is integrally attached to each blue laser diode 71.

[0024] Red light source device 120 includes red light source 121 arranged such that its optical axis is parallel to the light beam of blue laser diode 71, and condenser lens group 125 that condenses the light emitted from red light source 121. Red light source 121 is a red light emitting diode that is a semiconductor light emitting element that emits red wavelength band light. Red light source device 120 is arranged such that the optical axis of the red wavelength band light emitted by red light source device 120 intersects with the optical axis of the green wavelength band light emitted from fluorescent plate 101. Red light source device 120 also includes a heat sink 130 on the right panel 14 side of red light source 121.

[0025] The fluorescent plate device 100 constituting the green light source device 80 includes a fluorescent plate 101, a motor 110, condenser lenses 117a and 117b on the entrance side, and a condenser lens 115 on the exit side. The fluorescent plate 101 is a fluorescent wheel arranged so as to be perpendicular to the optical axis of the light emitted from the excitation light irradiation device 70. The fluorescent plate 101 is driven to rotate by the motor 110. The condenser lenses 117a and 117b condense the light beam of the excitation light emitted from the excitation light irradiation device 70 onto the fluorescent plate 101. The condenser lens 115 condenses the light beam emitted from the fluorescent plate 101 toward the front panel 12. The fluorescent plate device 100 is disposed above the condenser lenses 117a, 117b, and 115. Therefore, a part of the lower part of the fluorescent plate 101 is disposed on the optical path of the condenser lenses 117a, 117b, and 115.

[0026] Fluorescent light emitting regions and diffuse transmission regions are arranged side by side in the circumferential direction on fluorescent plate 101. The fluorescent light emitting regions receive blue wavelength band light emitted from blue laser diode 71 as excitation light, and emit excited fluorescence in a green wavelength band. The diffuse transmission regions diffusely transmit the light emitted from blue laser diode 71. The diffusely transmitted emitted light is emitted as blue wavelength band light of light source device 60.

[0027] The light guide optical system 140 includes a first dichroic mirror 141, a condenser lens 149, a second dichroic mirror 148, a first reflecting mirror 143, a condenser lens 146, a second reflecting mirror 145, and a condenser lens 147. The first dichroic mirror 141 is disposed at a position where the blue wavelength band light emitted from the excitation light irradiation device 70, the green wavelength band light emitted from the fluorescent plate 101, and the red wavelength band light emitted from the red light source device 120 intersect. The first dichroic mirror 141 transmits the blue wavelength band light and the red wavelength band light, and reflects the 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 coincides with the optical axis of the green wavelength band light reflected by the first dichroic mirror 141.

[0028] The condenser lens 149 is disposed 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 are both incident on the condenser lens 149. The 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 and transmits the blue wavelength band light. Therefore, the red wavelength band light and the green wavelength band light collected by the condenser lens 149 are reflected by the second dichroic mirror 148 and converted by 90 degrees to the rear panel 13 side. A condenser lens 173 is disposed on the rear panel 13 side of the second dichroic mirror 148. The red wavelength band light and the green wavelength band light reflected by the second dichroic mirror 148 are incident on a condenser lens 173 .

[0029] The first reflecting mirror 143 is disposed on the optical axis of the blue wavelength band light transmitted through the fluorescent screen 101, that is, between the condenser lens 115 and the front panel 12. The first reflecting mirror 143 reflects the blue wavelength band light and converts the optical axis of the blue wavelength band light by 90 degrees toward the left panel 15. The condenser lens 146 is disposed on the left panel 15 side of the first reflecting mirror 143. The second reflecting mirror 145 is disposed on the left panel 15 side of the condenser lens 146. The second reflecting mirror 145 converts the optical axis of the blue wavelength band light reflected by the first reflecting mirror 143 and collected by the condenser lens 146 by 90 degrees toward the rear panel 13 side. The condenser lens 147 is disposed on the rear panel 13 side of the second reflecting mirror 145. The blue wavelength band light reflected by the second reflecting mirror 145 passes through the second dichroic mirror 148 via the condenser lens 147 and enters the condenser lens 173. In this manner, the light beams of the red, green, and blue wavelength band lights guided by the light-guiding optical system 140 are guided onto the same optical path in the light source side optical system 170 .

[0030] The light source side optical system 170 includes a condenser lens 173, a light guiding device 175 such as a light tunnel or a glass rod, a condenser lens 178, an optical axis conversion mirror 179, a condenser lens 183, an irradiation mirror 185, and a condenser lens 195. The condenser lens 195 is also a part of the projection optical system 220 because it outputs, toward the projection optical system 220, the image light emitted from the display element 50 arranged on the rear panel 13 side of the condenser lens 195.

[0031] Each light beam emitted from the condenser lens 173 enters the light guiding device 175. The light beams entering the light guiding device 175 are converted by the light guiding device 175 into a light beam with a uniform intensity distribution.

[0032] An optical axis conversion mirror 179 is disposed on the optical axis of the light guiding device 175 on the rear panel 13 side via a condenser lens 178. The light beam emitted from the exit port of the light guiding device 175 is condensed by the condenser lens 178, and then converted by the optical axis conversion mirror 179 into an optical axis directed toward the condenser lens 183.

[0033] The light beam reflected by the optical axis conversion mirror 179 is collected by the collecting lens 183, and then is irradiated at a predetermined angle by the irradiation mirror 185 via a condenser lens 195 to the display element 50. A heat sink 190 is provided on the rear panel 13 side of the display element 50. The display element 50, which is a DMD, is cooled by this heat sink 190.

[0034] A light beam, which is light source light irradiated onto the image forming surface of the display element 50 by the light source side optical system 170, is reflected by the image forming surface of the display element 50 and projected onto the screen via the projection optical system 220 as projection light.

[0035] The projection optical system 220 is composed of a condenser lens 195, a movable lens group 235, and a fixed lens group 225. The fixed lens group 225 is built into a fixed lens barrel. The movable lens group 235 is built into a movable lens barrel, and is moved manually or automatically to enable zoom adjustment and focus adjustment.

[0036] By configuring the projection device 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 red, green, and blue wavelength band lights are incident on the light guide device 175 via the light guide optical system 140, and are further incident on the display element 50 via the light source side optical system 170. Therefore, the DMD, which is the display element 50 of the projection device 10, displays the light of each color in a time-division manner according to data, so that a color image can be projected from the projection port 12a onto the screen.

[0037] Next, the structure in which the display element 50 is attached to the light source case (case) 61 will be described in detail with reference to Figs. 4 to 10. Fig. 4 is an exploded perspective view showing the fixed portion 62 of the light source case 61, which is the fixed position where the display element 50 is attached, the display element 50, the heat sink 190, and the like. The fixed portion 62 of the light source case 61 has an opening 62a of a substantially elongated rectangle with the horizontal direction as the longitudinal direction. An annular wall portion 64 is provided around the opening 62a. A stepped, annular seating formation surface 65 is provided on the inside of the annular wall portion 64. The seating formation surface 65 is a flat surface, and has seating abutment portions 65a at three positions on the inside of the annular wall portion 64 on both short sides. The corresponding front surface of the display element 50 described later abuts against the seating abutment portions 65a to be positioned.

[0038] Furthermore, pins (positioning members) 66 for guiding the position of the display element 50 in a direction perpendicular to the optical axis are protruding from the seating surface 65 at two locations. Each pin 66 is protruding in a substantially cylindrical shape at one location on the upper part of the seating surface 65 on the right side as viewed from the display element 50 side in Fig. 4, and at another location on the lower part of the seating surface 65 on the left side. The pins 66 are inserted into pin holes 51 (see Fig. 9) of the display element 50, which will be described later, thereby positioning the display element 50 with respect to the fixed portion 62.

[0039] The annular wall portion 64 is formed with a groove-shaped dovetail-shaped engaged portion 64a on the female side of the dovetail joint. The dovetail-shaped engaged portion 64a is formed in two places on each side of the substantially rectangular annular wall portion 64, totaling eight. A packing (sealing member) 90 is attached to the fixed portion 62 via a shield plate 52. The configuration of the packing 90 will be described in detail later. The shield plate 52 is annular with a rectangular opening formed on the inside, and has a hole for exposing the seat abutment portion 65a and a hole for inserting the pin 66. The shield plate 52 is sandwiched between the fixed portion 62 and the packing 90 with one plate surface abutting against the seat forming surface 65 of the fixed portion 62 and the other plate surface abutting against the other side surface 91d of the packing body 91 of the packing 90.

[0040] The display element 50 is positioned in the optical axis direction by abutting the seating abutment 65a on the corresponding surface of the front surface (the surface on which the multiple mirror elements of the display element 50, which is the DMD, are arranged) facing the light source case 61. The display element 50 has a pin hole 51 formed on the front surface thereof into which the pin 66 formed on the seating surface 65 is inserted. As shown in FIG. 9 and FIG. 10, the opening edge of the pin hole 51 has an annular protruding portion 51a that protrudes slightly inward. Due to the protruding portion 51a, the opening diameter of the opening edge of the pin hole 51 is slightly smaller than the opening diameter of the inner part of the pin hole 51. The opening diameter of the opening edge of the pin hole 51 is slightly larger than the outer diameter of the pin 66 provided on the seating surface 65. Therefore, when the pin 66 is inserted into the pin hole 51, the outer diameter of the pin 66 interferes with the protruding portion 51a of the pin hole 51, thereby restricting the movement of the pin 66 and achieving positioning between the fixed portion 62 and the display element 50.

[0041] A substantially rectangular annular socket 53 having a plurality of holes 53a is attached to the back surface of the display element 50. With the packing 90 attached to the fixed portion 62, the display element 50 is inserted into the inside of the packing 90 from the front surface side of the display element 50 in a direction from one side surface 91c to the other side surface 91d of the packing body 91 (the direction indicated by D1 in FIG. 6; hereinafter referred to as the "insertion direction D1").

[0042] The substrate 54 and the base member 55 are provided on the rear side of the display element 50. Meanwhile, the heat sink 190 is provided with a base member 191 and a heat pipe 192 that connects the base member 191 and the heat sink main body 193. The base member 191 is formed with a rectangular protrusion 191a. The tip of the protrusion 191a of the base member 191 penetrates the hole 55a of the base fixing member 55, the hole 54a of the substrate 54, and the hole 53a of the socket 53, and abuts against the display element 50 via the thermally conductive member. The thermally conductive member is a clay-like material with low hardness that is mainly made of silicon. Heat from the display element 50 is released from the heat sink main body 193 via the thermally conductive member, the base member 191 (protrusion 191a), and the heat pipe 192.

[0043] A pressing member 56 is fixed to the base fixing member 55. A leaf spring portion 56a is formed on the pressing member 56. The leaf spring portion 56a presses the base member 191 from the rear surface. By pressing the base member 191 from the rear surface, the display element 50 is pressed toward the light source case 61 side, and is positioned and fixed in the optical axis direction. The pressing member 56 is fixed by two bolts 56b screwed into the screw holes 55b of the base fixing member 55. The base fixing member 55 is fixed by three bolts 55c screwed into the screw holes 61a of the light source case 61.

[0044] Next, the configuration of the packing 90 will be described in detail. As shown in Fig. 5, the packing 90 has an annular packing body 91 having a generally rectangular shape with the horizontal direction as the longitudinal direction, similar to the opening 62a and the annular wall 64 of the fixed part 62. A dovetail-shaped engaging portion 92, which is a protrusion on the male side of the dovetail joint, is formed on an outer peripheral surface 91a of the packing body 91. The dovetail-shaped engaging portions 92 are formed in the same number as the dovetail-shaped engaged portions 64a of the fixed part 62, and engage with the dovetail-shaped engaged portions 64a. The outer peripheral surface 91a of the packing body 91 abuts against the annular wall 64 of the fixed part 62.

[0045] As shown in FIG. 6, a pressing portion 94 is provided on an inner peripheral surface 91b of the packing body 91 so as to protrude inward. The pressing portion 94 is provided continuously in an annular shape on the inner peripheral surface 91b of the packing body 91. When the display element 50 is inserted inside the packing 90, the pressing portion 94 presses the outer peripheral surface 50a of the display element 50 while contacting the display element 50 (hereinafter, the direction in which the pressing portion 94 presses the display element 50 is referred to as the "pressing direction D2"). The pressing direction D2 of the pressing portion 94 is approximately perpendicular to the insertion direction D1 of the display element 50. In addition, the pressing portion 94 has a tongue shape extending toward the insertion direction D1 of the display element 50 in the cross-sectional view shown in FIG. 6. Specifically, the pressing portion 94 extends obliquely from a position on the inner circumferential surface 91b of the packing body 91 near the other side surface 91d of the packing body 91 toward the inside in the insertion direction D1 of the display element 50.

[0046] The pressing portion 94 has a substantially uniform thickness from its base end 94a to its tip end 94b. The tip end 94b of the pressing portion 94 is a flat surface substantially parallel to the other side surface 91d of the packing body 91. The pressing portion 94 has a curved cross section on the side facing the display element 50 when the display element 50 is inserted therein (hereinafter referred to as the "opposing side 94c"). More specifically, in the cross section of the opposing side 94c of the pressing portion 94, a portion close to the base end 94a is curved in a concave shape, and a portion close to the tip end 94b is curved in a convex shape. Therefore, the cross section of the opposing side 94c of the pressing portion 94 forms a substantially S-shaped curve as a whole.

[0047] Since the cross section of the pressing portion 94 is tongue-shaped as described above, a gap S1 that opens to the other side surface 91d of the packing body 91 is provided between the inner circumferential surface 91b of the packing body 91 and the pressing portion 94. This gap S1 allows the pressing portion 94 to elastically deform toward the inner circumferential surface 91b of the packing body 91. The packing 90 configured as described above is formed by integral molding using silicone rubber.

[0048] As shown in Fig. 7, the packing 90 can be attached to the fixed portion 62 by fitting a dovetail-shaped engaging portion 92 formed on an outer circumferential surface 91a of the packing body 91 into a dovetail-shaped engaged portion 64a formed on the annular wall portion 64. At this time, the packing 90 is attached so that the shielding plate 52 is sandwiched between the fixed portion 62 and the packing 90. As a result, the shielding plate 52 is held by the packing 90. The other side surface 91d of the packing body 91 of the packing 90 attached to the fixed portion 62 abuts against the plate surface of the shielding plate 52, and movement of the packing 90 toward the light source case 61 side is restricted by the seat forming surface 65 via the shielding plate 52 (see Fig. 9).

[0049] Furthermore, by inserting the display element 50 inside the packing 90, the packing 90 is disposed between the outer peripheral surface 50a of the display element 50 and the inner peripheral surface of the annular wall portion 64 of the fixed portion 62, as shown in Fig. 8. When inserting the display element 50 inside the packing 90, the pin hole 51 of the display element 50 is positioned relative to the pin 66 of the seat forming surface 65, and the display element 50 is inserted by inserting the pin 66 into the pin hole 51 (see Fig. 9). At this time, since the cross section of the opposing side 94c of the pressing portion 94 of the packing 90 is curved, the edge portion of the front surface of the display element 50 is unlikely to get caught by the pressing portion 94, so that the display element 50 can be smoothly inserted inside the packing 90.

[0050] When the display element 50 is inserted inside the packing 90, the pressing portion 94 provided on the inner peripheral surface 91b of the packing body 91 is elastically deformed toward the inner peripheral surface 91b while the opposing side 94c presses the outer peripheral surface 50a of the display element 50, and is in close contact with the display element 50. Meanwhile, the pressing portion 94 is compressed by a force (repulsive force) in the opposite direction to the pressing direction D2 of the pressing portion 94 from the outer peripheral surface 50a of the display element 50. The outer peripheral surface 91a of the packing body 91 abuts against the inner peripheral surface of the annular wall portion 64 and is in close contact with it. In this way, the packing 90 is compressed outward from the inner peripheral surface 91b side by the display element 50, so that the periphery of the display element 50 is sealed by the pressing portion 94 of the packing 90 provided in an annular shape, and the image forming surface side of the display element 50 (the inside side of the light source case 61) is hermetically sealed.

[0051] 9 and 10, the pressing portion 94 of the packing 90 is provided at a position overlapping with the pin 66 in the pressing direction D2 of the pressing portion 94 when the display element 50 is inserted inside the packing 90 (when the pin 66 is inserted into the pin hole 51). In other words, the tip portion 94b of the pressing portion 94 is located within a range of the height H1 of the pin 66 from the seating forming surface 65.

[0052] In addition, when the display element 50 is inserted inside the packing 90, the pressing portion 94 is crushed by the repulsive force from the display element 50 when pressing the outer peripheral surface 50a of the display element 50, and elastically deforms from the initial position (the portion shown by the dashed line in FIG. 10) toward the gap S1, and a part of it (the portion opposite to the opposing side 94c of the pressing portion 94) presses the inner peripheral surface 91b of the packing body 91. As a result, as shown in FIG. 9 and FIG. 10, a part of the pressing portion 94 is bitten into the inner peripheral surface 91b of the packing body 91. Since the pressing portion 94 elastically deforms toward the gap S1 in this way, the repulsive force from the display element 50 toward the packing 90 is absorbed by the pressing portion 94, so that the display element 50 can be accurately placed in the seating position of the fixed portion 62 (the position where the surface of the corresponding portion abuts against the seating abutment portion 65a).

[0053] In addition, when the pressing portion 94 is elastically deformed toward the gap S1, most of the surface of the opposing side 94c of the pressing portion 94 comes into contact with the outer peripheral surface 50a of the display element 50 due to an elastic restoring force. Therefore, the gap between the inner peripheral surface 91b of the packing 90 and the outer peripheral surface 50a of the display element 50 is sealed without any gaps. By disposing the packing 90 between the display element 50 and the fixed portion 62 in the above manner, the gap between the display element 50 and the fixed portion 62 is sealed by the packing 90 while being positioned.

[0054] Next, a structure in which the excitation light emitting device 70 is attached to the light source case 61 will be described with reference to Figs. 11 and 12. Fig. 11 is an exploded perspective view showing the fixed portion 162 of the light source case 61, which is the fixed position where the excitation light emitting device 70 is attached, the excitation light emitting device 70, and the like. The fixed portion 162 of the light source case 61 has an opening 162a of a substantially elongated rectangle with the horizontal direction as the longitudinal direction. An annular wall portion 164 is provided around the opening 162a. A seating abutment portion 165, which is a stepped annular flat surface, is provided on the inside of the annular wall portion 164. The seating abutment portion 165 has two pins (positioning members) 166 protruding therefrom, and is positioned by abutting the corresponding front surface of a holding plate 74 described later.

[0055] The seating abutment portion 165 is provided with four screw holes 164a. The bolts 74b of the holding plate 74 are screwed into the screw holes 164b, whereby the holding plate 74 is fixed to the fixed portion 162. The annular wall portion 164 is formed with groove-shaped dovetail-jointed engaged portions 164a, which are the female side of the dovetail joint. Five dovetail-jointed engaged portions 164a are provided on each long side of the annular wall portion 164, and two are provided on each short side of the annular wall portion 164, for a total of fourteen. Furthermore, screw holes 164c are provided on the outer side of one short side (the left side in FIG. 11) of the annular wall portion 164 for screwing in two bolts 75a of the board 75, which will be described later, to fix the board 75. Furthermore, on the outer periphery and corners of the long side of the annular wall portion 164, there are provided a total of four screw holes 164d into which bolts 85a for fixing the heat sink 81 described below are screwed.

[0056] The excitation light irradiation device 70 includes a packing (sealing member) 290 attached to the fixed portion 162, and a holding plate 74 having a blue laser diode 71. The holding plate 74 is provided with pin holes 72 into which pins 166 in the seating abutment portion 165 of the fixed portion 162 are inserted and loosely fitted. A substrate 75 is provided on the rear side of the holding plate 75, which is connected to the lead wires of the blue laser diodes 71. A base member 811 of a heat sink 81 is provided on the rear side of the substrate 75. A heat pipe 812 is connected to the base member 811. The heat pipe 812 is connected to a heat sink main body 813 (see FIG. 2). The base member 811 is attached to the rear side of the holding plate 74 by screwing a bolt 85a into a screw hole 164d, and transmits heat generated from the blue laser diode 71 to the heat sink main body 813.

[0057] The packing 290 has a substantially rectangular annular packing body 291, a dovetail-shaped engaging portion 292, and a pressing portion 294 (see the enlarged view of P1 portion in FIG. 12 ), similar to the packing 90 in the structure in which the display element 50 is attached to the fixed portion 62 described above. The packing 290 can be attached to the fixed portion 162 by fitting the dovetail-shaped engaging portion 292 formed on the outer circumferential surface 291a of the packing body 291 into the dovetail-shaped engaged portion 164a formed on the annular wall portion 164. When the packing 290 is attached to the fixed portion 162, the side surface of the packing body 291 on the light source case 61 side abuts against the seating abutment portion 165 of the fixed portion 162. As a result, the movement of the packing 290 toward the light source case 61 side is restricted by the seating abutment portion 165.

[0058] Furthermore, the holding plate 74 is inserted into the inside of the packing 290 from the front surface 74c side, so that the packing 290 is disposed between the outer peripheral surface 74a of the holding plate 74 and the inner peripheral surface 164e of the annular wall portion 164, as shown in Figs. 11 and 12. When inserting the holding plate 74 into the inside of the packing 290, the pin hole 72 of the holding plate 74 is positioned relative to the pin 166 of the seating abutment portion 165, and the holding plate 74 is inserted by inserting the pin 66 into the pin hole 51 (see Fig. 12). When the holding plate 74 is inserted into the inside of the packing 290, the pressing portion 294 provided on the inner peripheral surface 291b of the packing body 291 presses the outer peripheral surface 74a of the holding plate 74 and adheres closely to the holding plate 74. Also, the outer peripheral surface 291a of the packing body 291 abuts against the inner peripheral surface 164e of the annular wall portion 164 and adheres closely to it. In this manner, the packing 290 is compressed outwardly from its inner peripheral surface 291b by the retaining plate 74, whereby the periphery of the retaining plate 74 is sealed.

[0059] (Modification) Next, a modified example of the embodiment of the present invention will be described with reference to Fig. 13. The light source device according to the modified example differs from the embodiment described above in the configuration of a pressing portion 394 in a packing (sealing member) 390. The other configurations are the same as those of the embodiment described above, so description thereof will be omitted. The packing 390 according to the modified example is annular, and has a packing body 391 and a pressing portion 394 provided annularly on an inner circumferential surface 391b of the packing body 391.

[0060] The pressing portion 394 is provided in a shape that protrudes from a position on the inner circumferential surface 391b of the packing body 391 near the other side surface 391d of the packing body 391 toward the inside of the packing 390 toward the insertion direction D1 of the display element 50 (holding plate 74). The cross section of the opposing side 394c of the pressing portion 394 that faces the display element 50 (holding plate 74) is curved. A cavity is provided inside the pressing portion 394. In other words, a gap S2 that is a cavity is provided between the opposing side 394c of the pressing portion 394 and the inner circumferential surface 391b of the packing body 391. This gap S2 allows the pressing portion 394 to be elastically deformed toward the inner circumferential surface 391b of the packing body 391. Furthermore, a gel-like material or the like that is softer than packing body 390 may be placed in the cavity, and in this case as well, pressing portion 394 is allowed to elastically deform toward inner circumferential surface 391b of packing body 391.

[0061] The display element 50 (holding plate 74) is inserted into the inside of the packing in an insertion direction D1 from one side surface 391c of the packing body 391 to the other side surface 391d, similar to the above-mentioned packings 90 and 190. When the display element 50 (holding plate 74) is inserted into the inside of the packing 390, the pressing portion 94 is crushed by the repulsive force from the display element 50 (holding plate 74) and elastically deformed toward the gap S2 side, and a part of it presses the inner peripheral surface 391b of the packing body 391. As a result, a part of the pressing portion 394 is bitten into the inner peripheral surface 391b of the packing body 391. Therefore, the repulsive force from the display element 50 (holding plate 74) toward the packing 390 side is absorbed by the pressing portion 394, and the display element 50 (holding plate 74) can be accurately placed in the seating position of the fixed portion 62 and 162.

[0062] As described above, according to the embodiment of the present invention, when the display element 50 and the holding plate 74 are inserted inside the packing 90, 290, 390 attached to the fixed portion 62, 162, the display element 50 and the holding plate 74 are pressed by the pressing portions 94, 294, 394 of the packing 90, 290, 390. Then, the pressing portions 94, 294, 394 that receive a repulsive force from the pressed display element 50 and the holding plate 74 are elastically deformed toward the inner circumferential surfaces 91b, 291b, 391b of the packing 90, 290, 390 (the gaps S1, S2). As a result, the repulsive force from the display element 50 and the holding plate 74 is absorbed. Therefore, when the display element 50 and the holding plate 74 are inserted inside the packing 90, 290, 390, it is possible to suppress the display element 50 and the holding plate 74 from being displaced due to one-sided pressing by the inner circumferential surfaces 91b, 291b, 391b of the packing 90, 290, 390. As a result, the light source device 60 can suppress the occurrence of poor seating while improving the ease of attachment of the display element 50 and the holding plate 74 to the fixed parts 62, 162.

[0063] Furthermore, in a structure in which the display element 50 is attached to the fixed part 62, the pin 66 of the fixed part 62 is inserted into the pin hole 51 of the display element 50, and the fixed part 62 and the display element 50 are positioned by the protruding part 51a of the pin hole 51. Here, if the display element 50 is pressed one-sidedly by the inner peripheral surface 91b of the packing 90 when the display element 50 is inserted inside the packing 90, the outer peripheral surface 50a of the display element 50 will excessively interfere with the protruding part 51a of the pin hole 51, causing the protruding part 51a to be scraped off, and there is a concern that problems such as poor image quality will occur in the projection device 10 due to the generated shavings.

[0064] In contrast, in the present embodiment, in a structure in which the display element 50 is attached to the fixed portion 62, the pressing portion 94 of the packing 90 is provided at a position overlapping with the pin 66 in the pressing direction D2 of the pressing portion 94. Therefore, when the display element 50 is inserted inside the packing 90, the pressing portion 94 elastically deforms to absorb the repulsive force from the display element 50, and it is possible to prevent the display element 50 from being pressed one-sidedly by the inner circumferential surface 91b of the packing 90. As a result, when the display element 50 is inserted, it is possible to prevent the pin 66 from excessively interfering with the protruding portion 51a of the pin hole 51, and it is possible to prevent problems such as the above-mentioned image defects from occurring.

[0065] Furthermore, in a state in which the pressing portions 94, 294, 394 of the packings 90, 290, 390 are elastically deformed toward the inner circumferential surfaces 91b, 291b, 391b, a part of them (most of the surfaces of the opposing sides 94c, 394c) abut against the display element 50 and the holding plate 74 due to an elastic restoring force. Therefore, the space between the inner circumferential surfaces 91b, 391b of the packings 90, 390 and the outer circumferential surface 50a of the display element 50, and the space between the packings 290, 390 and the outer circumferential surface 74a of the holding plate 74 are sealed without any gaps, ensuring dustproofness.

[0066] Further, in a state where the pressing portion 94, 294, 394 of the packing 90, 290, 390 is elastically deformed toward the inner circumferential surface 91b, 291b, 391b, a part of it (a part opposite to the opposing side 94c, 394c) presses the inner circumferential surface 91b, 291b, 391b, so that a part of the pressing portion 94, 294, 394 is bitten into the inner circumferential surface 91b, 291b, 391b of the packing main body 91, 291, 391. Therefore, when the display element 50 and the holding plate 74 are inserted inside the packing 90, 290, 390, the repulsive force received from the display element 50 and the holding plate 74 can be effectively absorbed by the elastic deformation of the pressing portion 94, 294, 394.

[0067] Moreover, the display element 50 and the holding plate 74 are inserted inside the packing 90, 290, and the pressing portions 94, 294 have a tongue-like cross section extending in the insertion direction D1 of the display element 50 and the holding plate 74. The pressing portions 94, 294 having such a shape can be easily formed by a draft taper when the packing 90, 290 is integrally molded.

[0068] In addition, the pressing portions 94, 294, 394 of the packing 90, 290, 390 have curved cross sections on the opposing sides 94c, 294c, 394c that face the display element 50 and the holding plate 74. This makes it difficult for the front edges of the display element 50 and the holding plate 74 to get caught on the pressing portions 94, 294, 394 when the display element 50 and the holding plate 74 are inserted inside the packing 90, 290, 390. This allows the display element 50 and the holding plate 74 to be smoothly inserted inside the packing 90, 290, 390, improving the workability of installing the display element 50 and the holding plate 74.

[0069] Moreover, the packing 90, 290, 390 is annular, and the pressing portion 94, 294, 394 is annularly provided on the inner peripheral surface 91b, 291b, 391b of the packing 90, 290, 390. Therefore, by inserting the display element 50 and the holding plate 74 inside the packing 90, 290, 390, it is possible to seal the entire periphery of the display element 50 and the outer peripheral surface 74a of the holding plate 74, and the sealing effect of the packing 90, 290, 390 can be further improved.

[0070] Furthermore, the light source device 60, which is an electronic device, includes a light source case 61 having openings 62a, 162a at the fixing positions and provided with fixed parts 62, 162, and a holding plate 74 that holds the light source as a fixing target member. This makes it possible to provide a light source device 60 that can improve the ease of mounting the display element 50 and the holding plate 74 to the fixed parts 62, 162 while suppressing seating problems.

[0071] Moreover, the projection device 10, which is an electronic device, has a light source device 60, a display element 50 that emits light source light from the light source device 60 and forms image light, and is provided with fixed parts 62, 162 provided in a light source case 61 having openings 62a, 162a at fixed positions, a projection optical system that projects the image light emitted from the display element 50 onto a screen, and a projection device control unit that controls the display element 50 and the light source device 60. This makes it possible to improve the ease of mounting the display element 50 and the holding plate 74 to the fixed parts 62, 162, while suppressing seating problems, and to provide a projection device 10 that can project clear images.

[0072] In addition, the packings 90, 290, 390, which are sealing members, have inner circumferential surfaces 91b, 291b, 391b that come into contact with the display element 50 and the holding plate 74, and outer circumferential surfaces 91a, 291a, 391a that come into contact with the fixed portions 62, 162 to which the display element 50 and the holding plate 74 are fixed. The packings 90, 290, 390 protrude from the inner circumferential surfaces 91b, 291b, 391b and press the display element 50 and the holding plate 74. The display element 50 and the holding plate 74 have pressing portions 94, 294, 394 for supporting the display element 50 and the holding plate 74, and gaps S1, S2 are provided between the inner circumferential surface 91b, 291b, 391b and the pressing portions 94, 294, 394 to allow elastic deformation of the pressing portions 94, 294, 394 toward the inner circumferential surface 91b, 291b, 391b, so that the pressing portions 94, 294, 394 are elastically deformable toward the inner circumferential surface 91b, 291b, 391b. This makes it possible to improve the ease of attachment of the display element 50 and the holding plate 74 to the fixed portions 62, 162 and to prevent seating problems from occurring.

[0073] The above-described embodiments 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, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

[0074] The invention described in the first claim of this application is set forth below. [1] A fixed object member; a case including a fixed portion to which the fixed target member is fixed; a sealing member having an inner circumferential surface that contacts the target member and an outer circumferential surface that contacts the fixed portion, sealing the gap between the target member and the fixed portion; Equipped with The electronic device is characterized in that the sealing member has a pressing portion protruding from the inner surface and pressing the fixed object member, a gap is provided between the inner surface and the pressing portion, and the pressing portion is elastically deformed toward the inner surface. [2] The fixed portion has a positioning member that positions the fixed target member relative to the fixed portion inside the sealing member, The electronic device according to [1], wherein the pressing portion is provided at a position overlapping with the positioning member in a pressing direction of the pressing portion. [3] The electronic device described in [1] or [2], characterized in that when the pressing portion is elastically deformed toward the inner surface, a portion of it abuts against the fixed object due to an elastic restoring force. [4] The electronic device according to any one of [1] to [3], wherein the pressing portion is elastically deformed toward the inner circumferential surface, and a part of the pressing portion presses the inner circumferential surface. [5] The fixed member is inserted inside the sealing member, The electronic device according to any one of [1] to [4], wherein the pressing portion has a tongue-shaped cross section extending in the insertion direction of the fixed object. [6] The electronic device according to [5], wherein the pressing portion has a curved cross section on the side facing the fixed object. [7] The sealing member is annular, The electronic device according to any one of [1] to [6], wherein the pressing portion is provided in an annular shape on the inner peripheral surface of the sealing member. [8] An electronic device according to any one of [1] to [7], The fixed portion is provided in a light source case having an opening at a fixed position, The fixed target member is a holding plate that holds a light source. A light source device characterized by: [9] An electronic device according to any one of [1] to [7], comprising a light source device, and a display element that is the fixing target member and to which light source light from the light source device is emitted to form image light, and the fixing target part is provided on a light source case having an opening at a fixing position; a projection 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:

[10] A sealing member having an inner circumferential surface that contacts a target member and an outer circumferential surface that contacts a fixed portion of a case to which the target member is fixed, A sealing member characterized in that it has a pressing portion protruding from the inner circumferential surface and pressing the fixed object member, a gap is provided between the inner circumferential surface and the pressing portion, and the pressing portion is elastically deformable toward the inner circumferential surface. [Explanation of symbols]

[0075] 10 Projection device 12 Front panel 12a Projection port 13 Rear panel 14 Right Panel 15 Left Panel 21 Input / Output Connector Section 22 Input / Output Interface 23 Image conversion unit 24 Display encoder 25 Video RAM 26 Display driver 31 Image compression / expansion section 32 Memory card 35 Ir receiving unit 36 ​​Ir processing unit 37 Key / indicator section 38 Control section 41 Light source control circuit 43 Cooling fan drive control circuit 45 Lens motor 47 Audio processing unit 48 Speaker 50 Display element 50a Outer surface 51 Pin hole 51a Overhang 52 Shielding plate 53 Socket 53a Hole 54 Substrate 54a Hole 55 Base fixing member 55a Hole 55b Screw hole 55c Bolt 56 Pressing member 56a Leaf spring portion 56b Volt 60 Light Source 61 Light source case 61a Screw hole 62 Fixed part 62a Opening 64 Annular wall portion 64a Dovetail-shaped engaged portion 65 seating forming surface 65a seating contact portion 66 pin 70 excitation light irradiation device 71 Blue laser diode 72 Pin hole 73 Collimator lens 74 Holding plate 74a Outer surface 74b Bolt 74c Front 75 Board 75a Bolt 76 Reflector 78 Diffuser plate 80 Green light source device 81 Heatsink 85a Bolt 90 Packing 91 Packing body 91a Outer surface 91b Inner surface 91c one side 91d other side 92 Dovetail-shaped engagement portion 94 Pressing portion 94a Proximal end 94b Distal end 94c Opposite side 100 Fluorescent screen device 101 fluorescent screen 110 motor 115 Condenser lens 117a Condenser lens 117b Condenser lens 120 Red light source device 121 Red light source 125 Condenser lens group 130 heat sink 140 light guide optical system 141 First dichroic mirror 143 First reflecting mirror 145 Second reflecting mirror 146 Condenser lens 147 Condenser lens 148 Second dichroic mirror 149 Condenser lens 162 Fixed part 162a opening 164 annular wall 164a: dovetail-shaped engaged portion; 164b: screw hole 164c Screw hole 164d Screw hole 164e Inner surface 165 Seat abutment portion 166 Pin 170 Light source side optical system 173 Condenser lens 175 Light guide device 178 Condenser lens 179 Optical axis conversion mirror 183 Condenser lens 185 Irradiation mirror 190 Heat sink 191 Base material 191a protrusion 192 heat pipe 193 Heat sink body 195 Condenser lens 196 Thermally conductive member 220 Projection optical system 225 Fixed lens group 235 Movable lens group 260 Intake fan 270 Intake fan 280 Exhaust fan 290 Gasket 291 Packing body 291a Outer periphery 291b Inner surface 292 Dovetail-shaped engagement portion 294 Pressing section 301 Power supply unit 302 Control circuit board 390 Packing 391 Packing body 391 Packing body 391b Inner surface 391c One side surface 391d Other side 394 Pressing part 394c Opposite side 811 Base member 812 Heat pipe 813 Heat sink body D1 Insertion direction D2 Pressing direction S1 gap S2 gap SB System Bus

Claims

1. A fixed target member; a case including a fixed portion to which the fixed target member is fixed; a sealing member including an inner circumferential surface having a pressing portion that presses the fixation target member and an outer circumferential surface that abuts against the fixed portion, and that seals the fixation target member and the fixed portion; Equipped with A gap is provided between the inner circumferential surface and the pressing portion, the pressing portion is provided to protrude from the inner circumferential surface, is elastically deformable, and is elastically deformed toward the inner circumferential surface by a reaction force from the fixed target member when the pressing portion presses the fixed target member, the fixed portion has a positioning member that positions the fixed target member relative to the fixed portion inside the sealing member, The electronic device according to claim 1, wherein the pressing portion is provided at a position overlapping the positioning member in a pressing direction of the pressing portion.

2. The electronic device according to claim 1 , wherein a part of the pressing portion abuts against the target member due to an elastic restoring force when the pressing portion is elastically deformed toward the inner circumferential surface.

3. 3. The electronic device according to claim 1, wherein the pressing portion, in a state where it is elastically deformed toward the inner circumferential surface, presses the inner circumferential surface with a part of the pressing portion.

4. The fixing target member is inserted inside the sealing member, 4. The electronic device according to claim 1, wherein the pressing portion has a cross section shaped like a tongue extending in the insertion direction of the target component.

5. The electronic device according to claim 4 , wherein the pressing portion has a curved cross section on a side facing the target member.

6. the sealing member is annular; 6. The electronic device according to claim 1, wherein the pressing portion is provided in an annular shape on an inner circumferential surface of the sealing member.

7. The electronic device according to any one of claims 1 to 6 is provided. The fixed portion is provided on a light source case having an opening at a fixed position, The fixed target member is a holding plate that holds a light source. A light source device characterized by:

8. The electronic device according to any one of claims 1 to 6, comprising: a light source device; and a display element that is the fixing target member and to which light source light from the light source device is emitted to form image light, the fixing target portion being provided on a light source case having an opening at a fixing position; a projection 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:

Images