JP2023023059A - Sealing member, electronic device, light source device, and projection device - Google Patents

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

The present invention relates to a sealing member, an electronic device, a light source device, and a projection device.

2. Description of the Related Art Conventionally, there have been proposed electronic devices such as micromirror display elements called DMDs (digital micromirror devices) and projection devices for projecting images formed using liquid crystal plates onto a screen. For example, in the projection apparatus of Patent Document 1, a fixing target member, which is a holder having a semiconductor light emitting element and a lens array, is compressed through a sealing member arranged in the insertion direction of the fixing target member, Attached to the fixed part of the housing. This makes it possible to reliably position the light source device with respect to the housing.

JP 2019-66625 A

2. Description of the Related Art A holder having a display element in a projection device is required to have high positioning accuracy when attached. For the member to be fixed that requires high positional accuracy, the member to be fixed and the portion to be fixed of the housing are positioned in advance, and the member to be fixed is inserted by compressing the seal member. There was a case where the fixing part did not fit perfectly in the seating position, resulting in a seating failure.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sealing member, an electronic device, a light source device, and a projection device capable of suppressing seating failure while improving workability of attaching a member to be fixed to a fixed portion.

An electronic device according to one aspect of the present invention includes a case including a member to be fixed and a fixed portion to which the member to be fixed is fixed, an inner peripheral surface abutting the member to be fixed, and an outer peripheral surface being the fixed portion. a sealing member that abuts against and seals between the member to be fixed and the portion to be fixed, wherein the sealing member has a pressing portion that protrudes from the inner peripheral surface and presses the member to be fixed. A gap is provided between the inner peripheral surface and the pressing portion, and the pressing portion is elastically deformed toward the inner peripheral surface.

Advantageous Effects of Invention 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 are capable of suppressing seating failure while improving workability of attaching a member to be fixed to a fixed portion.

3 is a diagram showing functional circuit blocks of the projection device according to the embodiment; FIG. It is a mimetic diagram showing the internal structure of the projection device concerning an embodiment. 3 is a schematic plan view of the interior of the light source case of the projection device according to the embodiment; FIG. 3 is an exploded perspective view showing how the display element according to the embodiment is attached to a light source case; FIG. It is a front view of packing concerning an embodiment. FIG. 6 is a cross-sectional view of essential parts in the width direction of the packing according to the embodiment, and is a cross-sectional view showing a cross section taken along line VI-VI of FIG. 5; FIG. 4 is a front view of the packing as seen from the central axis direction, showing a state before the display element is inserted into the packing according to the embodiment attached to the fixed portion. FIG. 10 is a front view of the packing viewed from the central axis direction, showing a state in which the display element is inserted into the packing according to the embodiment attached to the fixed portion. 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 the IX-IX cross section of FIG. 8. FIG. FIG. 10 is an enlarged cross-sectional view of a main part of a portion surrounded by a dashed line in FIG. 9; It is an exploded perspective view showing a mode that the excitation light irradiation device concerning an embodiment is attached to a light source case. It is a partial sectional view showing the state where the holding plate of the excitation light irradiation device was inserted into the packing according to the embodiment. FIG. 11 is a cross-sectional view of a main part of a packing according to a modification;

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional circuit block diagram of a projection device (electronic device) 10. As shown in FIG. The projection device control section includes a CPU including an image conversion section 23 and a control section 38 , a front end unit including an input/output interface 22 , and a formatter unit including a display encoder 24 and a display drive section 26 . Image signals of various standards input from the input/output connector section 21 are converted by the image conversion section 23 through the input/output interface 22 and the system bus SB so as to be unified into image signals of a predetermined format suitable for display. After that, it is output to the display encoder 24 .

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

The display drive unit 26 drives a display element (fixed member) 50, which is a spatial light modulator (SOM), at an appropriate frame rate in response to the image signal output from the display encoder 24. FIG. The projection device 10 irradiates the display element 50 with a light beam emitted from a light source device (electronic device) 60 via a light guiding optical system 140 (see FIG. 3), thereby generating light reflected by the display device 50. An image is formed, and the image is projected and displayed on a projection target such as a screen (not shown) through the 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.

The image compression/decompression unit 31 also performs a recording process of compressing the luminance signal and color difference signal of the image signal by processing such as ADCT and Huffman coding and sequentially writing them to the memory card 32 which is a detachable recording medium. Furthermore, the image compression/decompression unit 31 reads the image data recorded in the memory card 32 in the playback mode, decompresses each image data constituting a series of moving images frame by frame, and converts the image data through the image conversion unit 23 . Output to display encoder 24 . Therefore, the image compression/decompression unit 31 can output a moving image or the like based on the image data stored in the memory card 32 .

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

The key/indicator unit 37 is composed of a main key, an indicator, and the like provided on the housing. An operation signal of the key/indicator section 37 is sent directly to the control section 38 . A key operation signal from the remote controller is received by the Ir receiver 35 , demodulated into a code signal by the Ir processor 36 , and output to the controller 38 .

The control section 38 is connected to the audio processing section 47 via the system bus SB. The audio processing unit 47 includes a sound source circuit such as a PCM sound source, converts sound data into analog data in the projection mode and the reproduction mode, and drives the speaker 48 to amplify the sound.

The control section 38 controls the light source control circuit 41 . The light source control circuit 41 individually controls the operation of the excitation light irradiation device of the light source device 60 so that the light source device 60 emits light in a predetermined wavelength band required for image generation.

Further, the control unit 38 causes the cooling fan drive control circuit 43 to perform temperature detection using a plurality of temperature sensors provided in the light source device 60 and the like, and controls the rotational speed of the cooling fan based on the temperature detection result. Further, the control unit 38 causes the cooling fan drive control circuit 43 to continue rotation of the cooling fan by a timer or the like even after the power of the main body of the projection apparatus 10 is turned off. It also performs control such as turning off the power.

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. As shown in FIG. Here, the housing of the projection device 10 is formed in a substantially box-like 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, left and right in the projection device 10 refer to the left and right direction with respect to the projection direction from the projection aperture 12a, and front and rear refer to the screen side direction of the projection device 10 and the traveling direction of the light beam. indicates the fore-and-aft direction.

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.

The light source device 60 is arranged substantially in the center of the housing of the projection device 10 . The light source device 60 accommodates optical members such as a light source, a lens, and a mirror inside by a light source case 61 . The power supply device 301 is arranged on the left panel 15 side of the light source device 60 . The board of the power supply device 301 is arranged substantially parallel to the left panel 15 . The control circuit board 302 is arranged on the rear panel 13 side of the light source device 60 . The control circuit board 302 is arranged substantially perpendicular to the vertical direction. The control circuit board 302 includes a power supply circuit block, a light source control block, and the like. Also, the control circuit board 302 can be provided in a plurality by dividing it for each function such as a power supply circuit block and a light source control block.

Here, the internal structure of the light source device 60 will be described. FIG. 3 is a schematic plan view showing the inside of the light source case 61 of the light source device 60. As shown in FIG. The light source device 60 is a red light source device 120 that is a light source of red wavelength band light, a green light source device 80 that is a light source of green wavelength band light, and a blue light source device that is a light source of blue wavelength band light, and is also an excitation light source. and a certain excitation light irradiation device 70 . The green light source device 80 is composed of the excitation light irradiation device 70 and the 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 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 onto the same optical path.

The excitation light irradiation device 70 is arranged 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 arranged such that the optical axes thereof are parallel to the rear panel 13 . The semiconductor light emitting device of this embodiment is a plurality of blue laser diodes 71 that emit blue wavelength band light. A plurality of blue laser diodes 71 are arranged side by side in parallel with the right panel 14 . These blue laser diodes 71 are fixed to a holding plate (member to be fixed) 74 . The holding plate 74 is provided with a total of eight blue laser diodes 71 arranged in two rows and four columns.

The excitation light irradiation device 70 also includes a reflecting mirror 76 , a diffusion plate 78 and a heat sink 81 . The reflecting mirror 76 turns the optical axis of the light emitted from each blue laser diode 71 toward the diffusion plate 78 by approximately 90 degrees. The diffuser plate 78 diffuses the emitted light from each blue laser diode 71 reflected by the reflecting mirror 76 at a predetermined diffusion angle. A heat sink 81 is positioned between the blue laser diode 71 and the right panel 14 (see FIG. 2). Each blue laser diode 71 is integrally attached with a collimator lens 73 that enhances the directivity of the light emitted from the blue laser diode 71 and converts it into parallel light.

The red light source device 120 includes a red light source 121 arranged so that the light beam of the blue laser diode 71 and the optical axis are parallel, and a condenser lens group 125 that collects the light emitted from the red light source 121. . The red light source 121 is a red light emitting diode, which is a semiconductor light emitting element that emits light in the red wavelength band. Red light source device 120 is arranged such that the optical axis of red wavelength band light emitted from red light source device 120 intersects the optical axis of green wavelength band light emitted from fluorescent plate 101 . The red light source device 120 also includes a heat sink 130 on the right panel 14 side of the red light source 121 .

A fluorescent plate device 100 constituting the green light source device 80 includes a fluorescent plate 101, a motor 110, incident-side condensing lenses 117a and 117b, and an exit-side condensing lens 115. FIG. 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 . This fluorescent screen 101 is rotationally driven by a motor 110 . Condensing lenses 117 a and 117 b condense a ray bundle of excitation light emitted from the excitation light irradiation device 70 onto the fluorescent screen 101 . Condensing lens 115 condenses the ray bundle emitted from fluorescent plate 101 toward front panel 12 . The fluorescent plate device 100 is arranged above the condensing lenses 117a, 117b, and 115. FIG. Therefore, a portion of the lower portion of the fluorescent plate 101 is arranged on the optical paths of the condensing lenses 117a, 117b, and 115. FIG.

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

The light guiding optical system 140 has 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, 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. placed 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 turned 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 .

A condenser lens 149 is arranged on the left panel 15 side of the first dichroic mirror 141 . Both 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 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 red and green wavelength band light and transmits blue wavelength band light. Therefore, the red wavelength band light and the green wavelength band light condensed by the condensing lens 149 are reflected by the second dichroic mirror 148 and converted by 90 degrees toward the rear panel 13 side. A condenser lens 173 is arranged 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 enter the condenser lens 173 .

The first reflecting 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 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 arranged on the left panel 15 side of the first reflecting mirror 143 . Also, the second reflecting mirror 145 is arranged on the left panel 15 side of the condensing 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 condensed by the condensing lens 146 to the rear panel 13 side by 90 degrees. The condenser lens 147 is arranged 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 way, the ray bundles of the respective wavelength band lights of red, green, and blue guided by the light guide optical system 140 are guided onto 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 guide 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 . Note that the condenser lens 195 is also a part of the projection optical system 220 in order to emit image light emitted from the display element 50 arranged on the rear panel 13 side of the condenser lens 195 toward the projection optical system 220 . .

Each ray bundle emitted from the condensing lens 173 enters the light guiding device 175 . Each ray bundle incident on the light guide device 175 becomes a ray bundle with a uniform intensity distribution by the light guide device 175 .

An optical axis conversion mirror 179 is arranged via a condenser lens 178 on the optical axis of the light guide device 175 on the rear panel 13 side. A light beam emitted from the exit port of the light guide device 175 is condensed by a condensing lens 178 and then converted by an optical axis conversion mirror 179 into an optical axis directed toward a condensing lens 183 .

The ray bundle reflected by the optical axis conversion mirror 179 is condensed by the condensing lens 183 and then irradiated by the irradiation mirror 185 via the condenser lens 195 to the display element 50 at a predetermined angle. A heat sink 190 is provided on the rear panel 13 side of the display element 50 . The display element 50 which is DMD is cooled by this heat sink 190 .

A light beam, which is light from the light source and is 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. be.

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 the fixed lens barrel. The movable lens group 235 is incorporated in a movable lens barrel and is manually or automatically moved to enable zoom adjustment and focus adjustment.

By configuring the projection device 10 in this way, 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, light in each wavelength band of red, green, and blue is guided. The light enters the light guide device 175 via the optical system 140 and further enters 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, time-divisionally displays light of each color according to data, so that a color image can be projected onto the screen from the projection port 12a.

Next, a structure for attaching the display element 50 to the light source case (case) 61 will be described in detail with reference to FIGS. 4 to 10. FIG. FIG. 4 is an exploded perspective view showing the fixed portion 62 of the light source case 61, the display element 50, the heat sink 190, and the like, which are fixed positions to which the display element 50 is attached. The fixed portion 62 of the light source case 61 has a substantially rectangular opening 62a whose longitudinal direction is the horizontal direction. An annular wall portion 64 is provided around the opening 62a. A stepped annular seating surface 65 is provided inside the annular wall portion 64 . The seat formation surface 65 is a flat surface, and has seat contact portions 65a at three locations inside the annular wall portion 64 on both short sides. The corresponding front surface of the display element 50, which will be described later, abuts and is positioned on the seat abutting portion 65a.

Further, pins (positioning members) 66 for guiding the position of the display element 50 in the direction perpendicular to the optical axis are protruded from the seating formation surface 65 at two locations. Each pin 66 protrudes in a substantially cylindrical shape at one location above the seating surface 65 on the right side and one location below the seating surface 65 on the left side as viewed from the display element 50 side in FIG. The pins 66 are inserted into pin holes 51 (see FIG. 9) of the display element 50 to be described later, thereby positioning the display element 50 with respect to the fixed portion 62 .

The annular wall portion 64 is formed with a groove-shaped dovetail joint engaged portion 64a on the female side of the dovetail joint. A total of eight dovetail joint engaged portions 64a are formed, two on each side of the substantially rectangular annular wall portion 64. As shown in FIG. A packing (sealing member) 90 is attached to the fixed portion 62 via the shield plate 52 . The details of the configuration of the packing 90 will be described later. The shielding plate 52 has an annular shape with an elongated rectangular opening formed inside, and is formed with a hole for exposing the seat contact portion 65 a and a hole for inserting the pin 66 . One plate surface of the shielding plate 52 is in contact with the seat forming surface 65 of the fixed portion 62 and the other plate surface is in contact with the other side surface 91 d of the packing body 91 of the packing 90 . and the packing 90.

In the display element 50, the surface corresponding to the front surface facing the light source case 61 (the surface on which a plurality of mirror elements of the display element 50, which is a DMD, are arranged) contacts the seating contact portion 65a, and is aligned in the optical axis direction. is positioned at A pin hole 51 into which a pin 66 formed on the seating formation surface 65 is inserted is formed in the front surface of the display element 50 . As shown in FIGS. 9 and 10, the opening edge of the pin hole 51 is provided with an annular projecting portion 51a that projects slightly inward. 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 due to the projecting portion 51a. 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. 50 is provided.

A substantially rectangular annular socket 53 having a plurality of holes 53a is attached to the rear surface of the display element 50 . With the packing 90 attached to the fixed portion 62, the display element 50 moves in a direction from one side surface 91c of the packing body 91 to the other side surface 91d (the direction indicated by D1 in FIG. 6). ”), and is inserted into the packing 90 from the front side of the display element 50 .

A substrate 54 and a base member 55 are provided on the rear side of the display element 50 . On the other hand, the heat sink 190 is provided with a base member 191 and a heat pipe 192 connecting the base member 191 and the heat sink main body 193 . A rectangular protrusion 191 a is formed on the base member 191 . The tip of the protrusion 191a of the base member 191 passes through 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 contacts the display element 50 via the heat conductive member. touch. The thermally conductive member is a low-hardness clay-like material mainly made of silicon. Heat from the display element 50 is radiated from the heat sink body 193 via the heat conductive member, the base member 191 (protrusion 191 a) and the heat pipe 192 .

A pressing member 56 is fixed to the base fixing member 55 . A leaf spring portion 56 a is formed in the pressing member 56 . The leaf spring portion 56a presses the base member 191 from the rear side. When the base member 191 is pressed from the back side, the display element 50 is pressed toward the light source case 61 and positioned and fixed in the optical axis direction. The pressing member 56 is fixed by screwing two bolts 56b into screw holes 55b of the base fixing member 55. As shown in FIG. The base fixing member 55 is fixed by screwing three bolts 55 c into screw holes 61 a of the light source case 61 .

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 in a substantially elongated rectangular shape whose longitudinal direction is the horizontal direction, like the opening 62a of the fixed portion 62 and the annular wall portion 64. As shown in FIG. An outer peripheral surface 91a of the packing body 91 is formed with a dovetail joint-like engaging portion 92 in the form of a protrusion on the male side of the dovetail joint. The dovetail joint engaging portions 92 are formed in the same number as the dovetail joint engaged portions 64a of the fixed portion 62, and engage with the dovetail joint engaged portions 64a. An outer peripheral surface 91 a of the packing body 91 contacts the annular wall portion 64 of the fixed portion 62 .

As shown in FIG. 6, the inner peripheral surface 91b of the packing body 91 is provided with a pressing portion 94 protruding inward. The pressing portion 94 is provided continuously in an annular shape on the inner peripheral surface 91 b of the packing body 91 . In a state where 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 being in contact with the display element 50 (hereinafter, the pressing portion 94 presses the display element 50). direction is referred to as "pressing direction D2"). The pressing direction D2 of the pressing portion 94 is substantially orthogonal to the insertion direction D1 of the display element 50 . 6, the pressing portion 94 has a tongue shape extending in the insertion direction D1 of the display element 50. As shown in FIG. Specifically, the pressing portion 94 extends obliquely inward toward the insertion direction D1 of the display element 50 from a position near the other side surface 91d of the packing body 91 on the inner peripheral surface 91b of the packing body 91. ing.

The pressing portion 94 has substantially the same thickness from its base end portion 94a to its tip end portion 94b. A tip portion 94 b of the pressing portion 94 is a flat surface substantially parallel to the other side surface 91 d of the packing body 91 . In addition, the pressing portion 94 has a curved cross section on the side facing the display element 50 (hereinafter referred to as "opposing side 94c") when the display element 50 is inserted therein. Specifically, in the cross section of the opposing side 94c of the pressing portion 94, the portion near the base end portion 94a is curved concavely, and the portion near the tip portion 94b is curved convexly. Therefore, the cross section of the opposing side 94c of the pressing portion 94 forms a substantially S-shaped curve as a whole.

Since the pressing portion 94 has a tongue-shaped cross section as described above, a gap opening toward the other side surface 91d of the packing body 91 is provided between the inner peripheral surface 91b of the packing body 91 and the pressing portion 94. S1 is provided. The gap S<b>1 allows the pressing portion 94 to elastically deform toward the inner peripheral surface 91 b of the packing body 91 . The packing 90 configured as described above is integrally molded using silicon rubber.

As shown in FIG. 7, the packing 90 has a dovetail joint engaging portion 92 formed on the outer peripheral surface 91a of the packing body 91 and a dovetail joint engaged portion 64a formed on the annular wall portion 64. can be attached to the fixed portion 62 by 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 . The shielding plate 52 is thereby held by the packing 90 . The other side surface 91 d of the packing body 91 contacts the plate surface of the shielding plate 52 , and the packing 90 attached to the fixed portion 62 is prevented from moving toward the light source case 61 by the seat forming surface 65 through the shielding plate 52 . regulated (see FIG. 9).

Furthermore, by inserting the display element 50 inside the packing 90, as shown in FIG. 90 is placed. When inserting the display element 50 inside the packing 90, the pin hole 51 of the display element 50 is positioned with respect to the pin 66 of the seat formation surface 65, and the pin 66 is inserted into the pin hole 51. 50 (see FIG. 9). At this time, since the cross section of the opposite 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 less likely to be caught by the pressing portion 94. It can be smoothly inserted inside the packing 90 .

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 main body 91 presses the outer peripheral surface 50a of the display element 50 with its opposite side 94c, thereby pushing the inner peripheral surface. It is elastically deformed toward the surface 91 b and comes into close contact with the display element 50 . On the other hand, the pressing portion 94 is compressed by receiving a force (repulsive force) in a direction opposite 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 91 a of the packing body 91 contacts and closely contacts the inner peripheral surface of the annular wall portion 64 . In this manner, the display element 50 compresses the packing 90 outward from the inner peripheral surface 91b thereof, so that the display element 50 is sealed by the pressing portion 94 of the packing 90 provided in an annular shape. , the image forming surface side (the inner side of the light source case 61) is sealed.

Here, as shown in FIGS. 9 and 10, the pressing portion 94 of the packing 90 is in a state in which the display element 50 is inserted inside the packing 90 (a state in which the pin 66 is inserted in the pin hole 51). It is provided at a position overlapping the pin 66 in the pressing direction D2 of the portion 94 . In other words, the tip portion 94b of the pressing portion 94 is located within the range of the height H1 of the pin 66 from the seating surface 65. As shown in FIG.

Further, 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 the initial position ( 10) to the side of the gap S1, and a portion thereof (the portion opposite to the facing side 94c of the pressing portion 94) presses the inner peripheral surface 91b of the packing body 91. As a result, as shown in FIGS. 9 and 10, a portion of the pressing portion 94 bites into the inner peripheral surface 91b of the packing body 91. As shown in FIG. Since the pressing portion 94 is elastically deformed 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 is positioned at the seating position ( The surface of the corresponding portion can be accurately accommodated in the position where the surface contacts the seat contact portion 65a.

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 contacts the outer peripheral surface 50a of the display element 50 due to the elastic restoring force. Therefore, the inner peripheral surface 91b of the packing 90 and the outer peripheral surface 50a of the display element 50 are sealed without any gap. By disposing the packing 90 between the display element 50 and the fixed portion 62 as described above, the display element 50 and the fixed portion 62 are sealed by the packing 90 while being positioned.

Next, based on FIG.11 and FIG.12, the structure by which the excitation light irradiation apparatus 70 is attached to the light source case 61 is demonstrated. FIG. 11 is an exploded perspective view showing the fixed portion 162 of the light source case 61, which is a fixed position to which the excitation light irradiation device 70 is attached, the excitation light irradiation device 70, and the like. The fixed portion 162 of the light source case 61 has a substantially rectangular opening 162a whose longitudinal direction is the horizontal direction. An annular wall portion 164 is provided around the opening 162a. Inside the annular wall portion 164, a seat contact portion 165, which is a stepped annular flat surface, is provided. Two pins (positioning members) 166 are protruded from the seat contact portion 165, and the corresponding front surfaces of the holding plate 74, which will be described later, abut and are positioned.

Further, the seat contact portion 165 is provided with four screw holes 164a. The holding plate 74 is fixed to the fixed portion 162 by screwing the bolt 74b of the holding plate 74 into the screw hole 164b. The annular wall portion 164 is formed with a groove-shaped dovetail joint engaged portion 164a on the female side of the dovetail joint. Five dovetail joint engaged portions 164a are provided on each long side of the annular wall portion 164, and two portions are provided on each short side of the annular wall portion 164, for a total of 14 pieces. be done. Further, a screw hole 164c for fixing the substrate 75 by screwing two bolts 75a of the substrate 75, which will be described later, is provided on the outer side of one short side (left side in FIG. 11) of the annular wall portion 164. It is Furthermore, screw holes 164d into which bolts 85a for fixing the heat sink 81 (to be described later) are screwed are provided at a total of four locations on the outer circumference and corners of the long sides of the annular wall portion 164 .

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 a pin hole 72 into which the pin 166 of the seat contact portion 165 of the fixed portion 162 is inserted and loosely fitted. A substrate 75 connected to the lead wires of the blue laser diodes 71 is provided on the back side of the holding plate 75 . A base member 811 of the heat sink 81 is provided on the back 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 back side of the holding plate 74 by screwing the bolt 85a into the screw hole 164d, and transmits the heat generated from the blue laser diode 71 to the heat sink main body 813. As shown in FIG.

Similar to the packing 90 in the structure in which the display element 50 is attached to the fixed portion 62, the packing 290 includes a substantially long rectangular ring-shaped packing main body 291, a dovetail joint engaging portion 292, and a pressing portion 294 (see FIG. 12). (see enlarged view of P1). The packing 290 is attached to the fixed portion 162 by fitting the dovetail joint engaging portion 292 formed on the outer peripheral surface 291a of the packing body 291 into the dovetail joint engaged portion 164a formed on the annular wall portion 164. can be installed. When the packing 290 is attached to the fixed portion 162 , the side surface of the packing body 291 on the side of the light source case 61 contacts the seat contact portion 165 of the fixed portion 162 . As a result, the packing 290 is restricted from moving toward the light source case 61 by the seat contact portion 165 .

Furthermore, by inserting the holding plate 74 into the packing 290 from the front surface 74c side, as shown in FIGS. A packing 290 is arranged between. When inserting the holding plate 74 inside the packing 290 , the pin hole 72 of the holding plate 74 is positioned with respect to the pin 166 of the seat contact portion 165 , and the holding plate is inserted in such a manner that the pin 66 is inserted into the pin hole 51 . Insert 74 (see FIG. 12). When the holding plate 74 is inserted inside the packing 290 , the pressing portion 294 provided on the inner peripheral surface 291 b of the packing body 291 presses the outer peripheral surface 74 a of the holding plate 74 and comes into close contact with the holding plate 74 . Further, the outer peripheral surface 291a of the packing body 291 contacts and closely contacts the inner peripheral surface 164e of the annular wall portion 164 . In this manner, the periphery of the holding plate 74 is sealed by compressing the packing 290 outward from the inner peripheral surface 291b of the holding plate 74 .

(Modification)
Next, a modification of the embodiment of the present invention will be described with reference to FIG. The light source device according to the modification differs from that of the embodiment described above in the configuration of the pressing portion 394 in the packing (sealing member) 390 . Since other configurations are the same as those of the above-described embodiment, description thereof will be omitted. The packing 390 according to the modification is annular, and has a packing main body 391 and a pressing portion 394 provided in an annular shape on an inner peripheral surface 391 b of the packing main body 391 .

The pressing portion 394 extends from a position near the other side surface 391d of the packing main body 391 on the inner peripheral surface 391b of the packing main body 391 toward the inside of the packing 390 toward the insertion direction D1 side of the display element 50 (holding plate 74). It is provided in a protruding form. A cross-section of a side 394c of the pressing portion 394 facing the display element 50 (holding plate 74) is curved. Further, a cavity is provided inside the pressing portion 394 . In other words, a hollow gap S2 is provided between the opposing side 394c portion of the pressing portion 394 and the inner peripheral surface 391b of the packing body 391 . The gap S2 allows the pressing portion 394 to elastically deform toward the inner peripheral surface 391b of the packing main body 391 . Furthermore, a material such as a gel that is softer than the packing body 390 may be put into the cavity, and in this case as well, the pressing portion 394 is allowed to elastically deform toward the inner peripheral surface 391b of the packing body 391. .

Inside the packing, similarly to the packings 90 and 190 described above, the display element 50 (holding plate 74) is inserted in the insertion direction D1 from one side surface 391c of the packing body 391 to the other side surface 391d. When the display element 50 (holding plate 74) is inserted inside 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. A portion thereof presses the inner peripheral surface 391 b of the packing body 391 . As a result, a portion of the pressing portion 394 bites into the inner peripheral surface 391 b of the packing body 391 . Therefore, the repulsive force directed from the display element 50 (holding plate 74) toward the packing 390 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 portions 62 and 162. can be done.

As described above, according to the embodiment of the present invention, when the display element 50 and the holding plate 74 are inserted into the packings 90, 290, 390 attached to the fixed portions 62, 162, the packings 90, 290, 390 are pressed. The display element 50 and the holding plate 74 are pressed by the portions 94 , 294 , 394 . Then, the pressing portions 94, 294, and 394 that have received the repulsive force from the pressed display element 50 and the holding plate 74 move toward the inner peripheral surfaces 91b, 291b, and 391b of the packings 90, 290, and 390 (the sides of the gaps S1 and S2). ). Thereby, 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 packings 90 , 290 , 390 , the inner peripheral surfaces 91 b , 291 b , 391 b of the packings 90 , 290 , 390 cause the display element 50 and the holding plate 74 to move one-sidedly. It is possible to suppress the positional deviation due to being pressed by the pressure. As a result, the light source device 60 can suppress the occurrence of poor seating while enhancing workability in attaching the display element 50 and the holding plate 74 to the fixed portions 62 and 162 .

In addition, in the structure in which the display element 50 is attached to the fixed portion 62, the pin 66 of the fixed portion 62 is inserted into the pin hole 51 of the display element 50, and the fixed portion 62 is displayed by the projecting portion 51a of the pin hole 51. Positioning with the element 50 is achieved. Here, when the display element 50 is inserted inside the packing 90 , if the display element 50 is unilaterally pressed by the inner peripheral surface 91 b of the packing 90 , the outer peripheral surface 50 a of the display element 50 may be pushed out of the pin hole 51 . Excessive interference with the protruding portion 51a may cause the protruding portion 51a to be scraped, and there is concern that problems such as image defects may occur in the projection apparatus 10 due to the resulting shavings.

In contrast, in this embodiment, in the 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 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 repulsive force from the display element 50 is absorbed by the elastic deformation of the pressing portion 94 , and the inner peripheral surface 91 b of the packing 90 allows the display element 50 to move in one direction. It is possible to suppress being pressed to. As a result, when the display element 50 is inserted, the pin 66 is prevented from excessively interfering with the protruding portion 51a of the pin hole 51, and problems such as image defects as described above can be prevented. .

Further, the pressing portions 94, 294, 394 of the packings 90, 290, 390 are elastically deformed toward the inner peripheral surfaces 91b, 291b, 391b, and part of them (surfaces of the opposing sides 94c, 394c) are elastically restored by the elastic restoring force. majority) abut the display element 50 and the holding plate 74 . Therefore, the inner peripheral surfaces 91b, 391b of the packings 90, 390 and the outer peripheral surface 50a of the display element 50 and the packings 290, 390 and the outer peripheral surface 74a of the holding plate 74 are tightly closed without any gaps, thereby ensuring dust resistance. can be ensured.

Further, the pressing portions 94, 294, 394 of the packings 90, 290, 390 are partially elastically deformed toward the inner peripheral surfaces 91b, 291b, 391b (the portions opposite to the opposing sides 94c, 394c). presses the inner peripheral surfaces 91b, 291b, 391b, and as a result, parts of the pressing portions 94, 294, 394 bite into the inner peripheral surfaces 91b, 291b, 391b of the packing bodies 91, 291, 391. Therefore, when the display element 50 and the holding plate 74 are inserted inside the packings 90 , 290 , 390 , the repulsive force received from the display element 50 and the holding plate 74 is effectively elastically deformed by the pressing portions 94 , 294 , 394 . can be absorbed.

The display element 50 and the holding plate 74 are inserted inside the packings 90 and 290, and the pressing portions 94 and 294 have tongue-like cross sections extending in the insertion direction D1 of the display element 50 and the holding plate 74. As shown in FIG. The pressing portions 94, 294 having such a shape can be easily formed by taper when the packings 90, 290 are integrally molded.

The pressing portions 94 , 294 , 394 of the packings 90 , 290 , 390 have curved cross sections on opposing sides 94 c , 294 c , 394 c facing the display element 50 and the holding plate 74 . As a result, when inserting the display element 50 and the holding plate 74 inside the packings 90 , 290 , 390 , the front edge portions of the display element 50 and the holding plate 74 are less likely to be caught by the pressing portions 94 , 294 , 394 . there is Therefore, the display element 50 and the holding plate 74 can be smoothly inserted into the packings 90, 290, 390, and the mounting workability of the display element 50 and the holding plate 74 can be enhanced.

The packings 90, 290, 390 are annular, and the pressing portions 94, 294, 394 are provided annularly on the inner peripheral surfaces 91b, 291b, 391b of the packings 90, 290, 390, respectively. Therefore, by inserting the display element 50 and the holding plate 74 inside the packings 90, 290, 390, the entire area around the outer peripheral surfaces 74a of the display element 50 and the holding plate 74 can be sealed. The sealing effect of 90, 290, 390 can be further enhanced.

The light source device 60, which is an electronic device, includes a light source case 61 having openings 62a and 162a at fixed positions and provided with fixed portions 62 and 162, and a holding plate 74 holding a light source as a member to be fixed. Prepare. As a result, it is possible to provide the light source device 60 capable of suppressing the occurrence of poor seating while enhancing workability in attaching the display element 50 and the holding plate 74 to the fixed portions 62 and 162 .

The projection device 10, which is an electronic device, includes a light source device 60 and a display element 50 that emits light source light from the light source device 60 and forms image light, and has openings 62a and 162a at fixed positions. Fixed parts 62 and 162 are provided in a light source case 61 having a projection optical system that projects image light emitted from the display element 50 onto a screen, a projection device control unit that controls the display element 50 and the light source device 60 Prepare. As a result, it is possible to improve the workability of attaching the display element 50 and the holding plate 74 to the fixed portions 62 and 162, suppress the occurrence of poor seating, and provide the projection device 10 capable of projecting a clear image. be able to.

Packings 90, 290, and 390, which are sealing members, have inner peripheral surfaces 91b, 291b, and 391b that contact the display element 50 and the holding plate 74, and outer peripheral surfaces 91a, 291a, and 391a that are in contact with the display element 50 and the holding plate 74. Pressing portions 94, 294, and 394 abut on the fixed portions 62 and 162 to be fixed, and protrude from the inner peripheral surfaces 91b, 291b, and 391b to press the display element 50 and the holding plate 74. Between 91b, 291b, 391b and pressing portions 94, 294, 394, gaps S1, S2 are provided to allow elastic deformation of pressing portions 94, 294, 394 toward inner peripheral surfaces 91b, 291b, 391b, The pressing portions 94, 294, 394 are elastically deformable toward the inner peripheral surfaces 91b, 291b, 391b. Accordingly, it is possible to suppress the occurrence of poor seating while enhancing workability in attaching the display element 50 and the holding plate 74 to the fixed portions 62 and 162 .

It should be noted that 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 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 described in the claims and its equivalents.

Below, the invention described in the first claim of the present application is added.
[1] A member to be fixed;
a case comprising a fixed portion to which the member to be fixed is fixed;
a sealing member that has an inner peripheral surface in contact with the member to be fixed, an outer peripheral surface in contact with the fixed portion, and seals between the fixed member and the fixed portion;
with
The sealing member has a pressing portion that protrudes from the inner peripheral surface and presses the member to be fixed, and a gap is provided between the inner peripheral surface and the pressing portion, and the pressing portion: An electronic device, wherein the electronic device is elastically deformed toward the inner peripheral surface.
[2] The fixed portion has a positioning member for positioning the fixed member with respect to the fixed portion inside the sealing member,
The electronic device according to [1], wherein the pressing portion is provided at a position overlapping the positioning member in the pressing direction of the pressing portion.
[3] The above [1] or the above [2], wherein the pressing portion is in a state of being elastically deformed toward the inner peripheral surface, and a portion of the pressing portion contacts the member to be fixed by an elastic restoring force. Electronic device as described.
[4] The pressing portion according to any one of [1] to [3], wherein a portion of the pressing portion presses the inner peripheral surface while being elastically deformed toward the inner peripheral surface. electronic device.
[5] The member to be fixed is inserted inside the sealing member,
The electronic device according to any one of [1] to [4], wherein the pressing portion has a tongue-like cross section extending in the direction in which the member to be fixed is inserted.
[6] The electronic device according to [5], wherein the pressing portion has a curved cross-section on the side facing the member to be fixed.
[7] the sealing member is annular;
The electronic device according to any one of [1] to [6], wherein the pressing portion is annularly provided on the inner peripheral surface of the sealing member.
[8] The electronic device according to any one of [1] to [7] above,
The fixed portion is provided in a light source case having an opening formed at a fixed position,
The member to be fixed is a holding plate that holds a light source,
A light source device characterized by:
[9] A light source device, and a display element, which is the member to be fixed, which emits light source light from the light source device and forms image light, and the light source case having an opening at a fixed position is mounted on the cover. The electronic device according to any one of [1] to [7], which is provided with a fixing portion;
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 peripheral surface in contact with a member to be fixed and an outer peripheral surface in contact with a fixed portion of a case to which the fixed member is fixed,
It has a pressing portion that protrudes from the inner peripheral surface and presses the member to be fixed, and a gap is provided between the inner peripheral surface and the pressing portion, and the pressing portion is located on the inner peripheral surface side. A sealing member characterized by being elastically deformable.

REFERENCE SIGNS LIST 10 projection device 12 front panel 12a projection port 13 rear panel 14 right panel 15 left panel 21 input/output connector 22 input/output interface 23 image converter 24 display encoder 25 video RAM 26 display driver 31 image compression/decompression unit 32 memory card 35 Ir receiver 36 Ir processor 37 Key/indicator 38 Control unit 41 Light source control circuit 43 Cooling fan drive control circuit 45 Lens motor 47 Audio processor 48 Speaker 50 Display element 50a Peripheral surface 51 Pin hole 51a Overhang 52 Shield Plate 53 Socket 53a Hole 54 Board 54a Hole 55 Base fixing member 55a Hole 55b Screw hole 55c Bolt 56 Pressing member 56a Leaf spring 56b Bolt 60 Light source device 61 Light source case 61a Screw hole 62 Part to be fixed 62a Opening 64 Annular Wall portion 64a Dovetail joint engaged portion 65 Seat forming surface 65a Seat contact portion 66 Pin 70 Excitation light irradiation device 71 Blue laser diode 72 Pin hole 73 Collimator lens 74 Holding plate 74a Peripheral surface 74b Bolt 74c Front surface 75 Substrate 75a Bolt 76 Reflecting mirror 78 Diffusion plate 80 Green light source device 81 Heat sink 85a Bolt 90 Packing 91 Packing main body 91a Outer peripheral surface 91b Inner peripheral surface 91c One side surface 91d The other side surface 92 Dovetail joint engaging portion 94 Pressing portion 94a Base end portion 94b Tip Part 94c opposite side 100 fluorescent plate device 101 fluorescent plate 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 Condensing lens 147 Condensing lens 148 Second dichroic mirror 149 Condensing lens 162 Fixed portion 162a Opening 164 Annular wall portion 164a Dovetail joint engaged portion 164b Screw hole 164c Screw hole 164d screw hole 164e inner peripheral surface 165 seat contact 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 Gas member 191a Protrusion 192 Heat pipe 193 Heat sink main 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 Packing 291 Packing main body 291a Inside outer peripheral surface 291b Peripheral surface 292 Dovetail joint engaging portion 294 Pressing portion 301 Power supply device 302 Control circuit board 390 Packing 391 Packing main body 391 Packing main body 391b Inner peripheral surface 391c One side surface 391d The other side surface 394 Pressing portion 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 (10)

a member to be fixed;
a case comprising a fixed portion to which the member to be fixed is fixed;
a sealing member that has an inner peripheral surface in contact with the member to be fixed, an outer peripheral surface in contact with the fixed portion, and seals between the fixed member and the fixed portion;
with
The sealing member has a pressing portion that protrudes from the inner peripheral surface and presses the member to be fixed, and a gap is provided between the inner peripheral surface and the pressing portion, and the pressing portion: An electronic device, wherein the electronic device is elastically deformed toward the inner peripheral surface. The fixed portion has a positioning member for positioning the fixed member with respect to the fixed portion inside the sealing member,
2. The electronic device according to claim 1, wherein the pressing portion is provided at a position overlapping the positioning member in the pressing direction of the pressing portion. 3. The electronic device according to claim 1, wherein the pressing portion is elastically deformed toward the inner peripheral surface, and part of the pressing portion contacts the member to be fixed by an elastic restoring force. 4. The electronic device according to claim 1, wherein a portion of the pressing portion presses the inner peripheral surface while being elastically deformed toward the inner peripheral surface. The member to be fixed is inserted inside the sealing member,
The electronic device according to any one of claims 1 to 4, wherein the pressing portion has a tongue-like cross section extending in the direction in which the member to be fixed is inserted. 6. The electronic device according to claim 5, wherein the pressing portion has a curved cross section on the side facing the member to be fixed. the sealing member is annular;
The electronic device according to any one of claims 1 to 6, wherein the pressing portion is annularly provided on the inner peripheral surface of the sealing member. Equipped with the electronic device according to any one of claims 1 to 7,
The fixed portion is provided in a light source case having an opening at a fixed position,
The member to be fixed is a holding plate that holds a light source,
A light source device characterized by: A light source device and a display element, which is the member to be fixed, which emits light source light from the light source device and forms image light, and the fixed portion is in a light source case having an opening at a fixed position. An electronic device according to any one of claims 1 to 7, provided with
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: A sealing member having an inner peripheral surface in contact with a member to be fixed and an outer peripheral surface in contact with a fixed portion of a case to which the member to be fixed is fixed,
It has a pressing portion that protrudes from the inner peripheral surface and presses the member to be fixed, and a gap is provided between the inner peripheral surface and the pressing portion, and the pressing portion is located on the inner peripheral surface side. A sealing member characterized by being elastically deformable.

Images