CN112817202A - Image projection apparatus - Google Patents
Image projection apparatus Download PDFInfo
- Publication number
- CN112817202A CN112817202A CN202011285941.6A CN202011285941A CN112817202A CN 112817202 A CN112817202 A CN 112817202A CN 202011285941 A CN202011285941 A CN 202011285941A CN 112817202 A CN112817202 A CN 112817202A
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- Prior art keywords
- cover member
- connection terminal
- interface
- image projection
- outside
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The invention provides an image projection apparatus capable of effectively preventing dust from entering from an interface part arranged on a shell, comprising: an illumination optical system for generating illumination light; an image display element for modulating illumination light to produce projection light; a projection optical system for amplifying the projection light; a control unit; a connection terminal part provided with an insertion part for connection with the outside; an interface board connecting the connection terminal portion and the control portion; a cover member which covers the connection terminal portion and a portion of the interface substrate to which the connection terminal portion is attached in a state in which the insertion portion can be connected from outside, and which forms a first space isolated from outside inside; and a housing that houses the illumination optical system, the image display element, the projection optical system, the control unit, the connection terminal unit, the interface substrate, and the cover member in an internal second space in a state in which a first wall portion of the cover member that covers the insertion portion in a state in which the first wall portion is connectable from outside is exposed to the outside.
Description
Technical Field
The present invention relates to an image projection apparatus such as a projector for projecting an image onto a screen or the like.
Background
The image projection apparatus is provided with an interface unit for connection to the outside. When external dust enters the image projection apparatus through the gap of the interface portion and adheres to a substrate of the control portion, the portion may be damaged due to high temperature. Further, the transmittance of the optical member may be reduced by the dust, thereby deteriorating the image quality.
Conventionally, there are the following image projection apparatuses: the inlet port and the air inlet of the cooling fan are provided on the same surface, and the cover member is attached to the front surface of the inlet port and the air inlet of the cooling fan, thereby preventing the entry of dust (see patent document 1).
< Prior Art document >
< patent document >
Patent document 1: japanese unexamined patent application publication No. 2012-547641
Disclosure of Invention
< problems to be solved by the present invention >
However, in the above-described conventional technique, a cable insertion portion connected to the interface portion is provided, and dust enters the cover member through the cable insertion portion. Therefore, the effect of preventing dust from entering from the inlet port is insufficient.
An object of the present invention is to provide an image projection apparatus capable of effectively preventing dust from entering from an interface unit attached to a housing.
< means for solving the problems >
In order to solve the above problem, the present invention provides an image projection apparatus including: an illumination optical system for generating illumination light; an image display element for modulating the illumination light to produce projection light; a projection optical system for amplifying the projection light; a control unit; a connection terminal part provided with an insertion part for connection with the outside; an interface board for connecting the connection terminal portion and the control portion; a cover member that covers the connection terminal portion and a portion of the interface board to which the connection terminal portion is attached in a state in which the insertion portion is externally connectable, and that forms a first space isolated from the outside inside; and a housing that houses the illumination optical system, the image display element, the projection optical system, the control unit, the connection terminal unit, the interface substrate, and the cover member in a second space inside in a state where a first wall portion of the cover member that covers the insertion portion in a state that the first wall portion is connectable from outside is exposed to the outside.
Preferably, the cover member includes a first cover member and a second cover member, and a portion of the interface substrate extending from a portion located in the first space to the second space is sandwiched between a first sandwiching surface provided in the first cover member and extending parallel to the interface substrate on one surface side of the interface substrate, and a second sandwiching surface provided in the second cover member and extending parallel to the interface substrate on the other surface side of the interface substrate.
Preferably, the housing has an attachment opening for holding the first wall portion, and further includes a sealing member that covers an outer periphery of the lid member and seals a gap between the lid member and the attachment opening.
Preferably, the heat radiating portion is provided outside the housing.
Preferably, the housing is not provided with an operation panel.
< effects of the invention >
According to the present invention, an image projection apparatus capable of effectively preventing dust from entering from an interface unit attached to a housing is provided.
Drawings
Fig. 1 is a perspective view of an image projection apparatus 1 according to an embodiment.
Fig. 2 is a block diagram of the image projection apparatus 1.
Fig. 3 is a front view of the image projection apparatus 1 in a state where the front case 2F is removed.
Fig. 4 is an exploded perspective view of the image projection apparatus 1.
Fig. 5 is an exploded view of the front case 2F, the rear case 2B, and the interface 9.
Fig. 6 is an exploded view of the interface 9.
Fig. 7 is a perspective view of the interface unit 9 viewed from a lower oblique side.
Detailed Description
The image projection apparatus 1 according to the embodiment of the present invention will be described below.
Fig. 1 is a perspective view of an image projection apparatus 1 according to an embodiment. The image projection apparatus 1 is a substantially rectangular parallelepiped, and includes a casing 2 and a heat dissipation portion 3 disposed outside the casing 2. The case 2 has a front case 2F and a rear case 2B, which are made of metal respectively, and have high thermal conductivity. Fig. 2 is a block diagram of an image projection apparatus. Fig. 3 is a front view of the image projection apparatus 1 in a state where the front case 2F is removed. Fig. 4 is an exploded perspective view of the image projection apparatus 1.
The image projection apparatus 1 includes a housing 2 and a heat dissipation portion 3 disposed outside the housing 2. The image projection apparatus 1 further includes, inside the casing 2, an illumination optical system 4, an image display unit 5, a projection optical system 6, a concave mirror 7, an interface unit 9, and a control unit 8 for controlling these components.
(front case 2F)
The front case 2F is provided with: an opening 25 for irradiating projection light; and an adjustment hole 21 for operating a focus adjustment unit 61, which will be described later, provided in the projection optical system 6 from the outside.
Hereinafter, as shown in the drawing, the side of the housing 2 where the opening 25 is provided is set to the front side, and the opposite side thereof is set to the rear side, the traveling direction of the projection light in the optical axis OA of the projection optical system 6 is set to the upper side (enlargement side), and the opposite side thereof is set to the lower side (reduction side), and the description will be given by setting the image projection apparatus 1 to the upper and lower sides and the left and right sides when viewed from the front side as the left and right sides.
As shown in fig. 1, a transparent member 27 such as a glass plate is attached to the opening 25 of the front case 2F, and a lid 26 is attached to the adjustment hole 21. The lid 26 allows the adjustment hole 21 to be opened and closed.
(rear case 2B)
As shown in fig. 3 and 4, a groove portion 22 is provided at the outer peripheral edge of the rear case 2B, and an elongated seal member 23 having elasticity is disposed in the groove portion 22. An internal space 2Ba having a predetermined depth and in which the projection optical system 6 and the concave mirror 7 are disposed is provided in an upper portion of the rear case 2B. A substantially plate-shaped mounting base 2Bb on which the illumination optical system 4 and the image display unit 5 are disposed is provided at a lower portion of the rear case 2B.
In a state where the sealing member 23 is disposed in the groove portion 22 of the rear case 2B, the front case 2F is disposed in front of the rear case 2B, and is fixed by screws 24 around the front case 2F and the rear case 2B so as to be closely joined to each other, thereby achieving a state of fig. 1 where the front case 2F and the rear case 2B are fixed to each other. At this time, the opening 25 of the front case 2F is sealed by the transparent member 27, and the interface 9 is also attached to the case 2 in a dust-proof manner as described later. Thus, when the adjustment hole 21 is closed by the lid 26, no other hole is present in the front case 2F or the rear case 2B, and the internal space of the case 2 (the second space S2) is in a sealed state in which dust does not enter from the outside.
In the case 2 in the assembled state, the upper portion of the internal space 2Ba is thick (the front-rear width is large) and the lower portion is thin (the front-rear width is small), and the lower portion thereof is provided with a recess P which is a space where the heat dissipation portion 3 can be disposed by recessing the rear side of the mounting table 2 Bb. When the heat dissipation portion 3 is disposed in the recess P, the entire case 2 and the heat dissipation portion 3 are substantially rectangular. Therefore, the heat dissipation portion 3 does not protrude from the housing 2, and does not become an obstacle when the image projection apparatus 1 is installed.
(illumination optical System 4)
The illumination optical system 4 is a light source, for example, an LED having three colors of RGB. However, the light source is not limited to this, and for example, an ultra-high pressure mercury lamp or a laser may be used. In the illumination optical system 4, light including R light, G light, and B light generated by the light source is incident on the image display unit 5.
(image display section 5)
The image display unit 5 includes an image display element (light modulation element) 51 and a prism 52 (only a reflection surface is displayed).
(image display element 51)
The image display element 51 is rectangular, and is, for example, a DMD (digital micromirror device). The DMD has a substantially rectangular mirror surface constituted by a plurality of micromirrors, and generates predetermined projection light by time-division driving each micromirror based on data received from the control section 8 and modulating the illumination light generated by reflection in the illumination optical system 4, and causes the projection light to enter the projection optical system 6.
In the embodiment, the image display element 51 is formed using a DMD, but the DMD is not limited to this, and a liquid crystal panel, a light emitting element array in which minute light emitting elements are two-dimensionally arrayed, or the like can be suitably used.
(prism 52)
The prism 52 is a Total Internal Reflection (Total Internal Reflection) prism or a Reverse Total Internal Reflection (Reverse Total Internal Reflection) prism in the embodiment, but may be a cross dichroic prism. The prism 52 directs the illumination light generated by the illumination optical system 4 toward the image display element 51, and reflects the projection light made by the image display element 51 to the projection optical system 6.
(projection optical System 6)
The projection optical system 6 has a plurality of lens groups. The projection optical system 6 will be described in detail later. The lens groups are arranged along the optical axis OA centered on the optical axis OA, and are used to enlarge an image generated by the image display element 51.
(concave reflecting mirror 7)
The concave mirror 7 reflects the projection light amplified by the projection optical system 6 to change its optical path, and guides the transmitted light to the projection surface through the light transmitting member 27. Thereby, an image or video can be projected at a very wide angle.
(Heat radiating section 3)
As shown in fig. 4, the heat dissipation unit 3 includes one intake fan 31, two exhaust fans 32, and a heat sink 33, and is disposed in a recess P outside the casing 2. However, the number of the suction fan 31 and the exhaust fan 32 is not limited thereto. In the embodiment, the intake fan 31 is installed on the left side and the exhaust fan is installed on the right side, but the present invention is not limited thereto, and the reverse may be applied.
The heat sink 33 includes a plurality of plate-shaped fins 33a arranged in parallel with each other. In the radiator 33, the fins 33a are arranged in a direction (extending left and right) from the intake fan 31 toward the exhaust fan 32, so that air flows between the plurality of fins 33 between the intake fan 31 and the exhaust fan 32.
The flow of air discharged from the heat dissipation portion 3 is shown by arrows in fig. 1 and 4. The arrows in the transparent member 27 of fig. 4 indicate the traveling direction of the projection light. The air in the heat dissipation portion 3 flows in a direction different from the direction in which the projection light is irradiated and in a different plane relationship, and does not intersect the projection light. Therefore, the projection light is not disturbed by the high-temperature air flowing by the heat dissipation portion 3.
(interface 9)
The interface 9 is provided with a connection terminal 91 for connection to the outside. The interface substrate 92 extends from the interface terminal portion 91 into the housing 2, and power and input signals are transmitted to the control portion 8 through the interface substrate 92 and the flexible substrate 94 or another interface substrate 95 extending from the interface substrate 92, and power and control signals are further transmitted from the control portion 8 to the illumination optical system 4, the image display portion 5, and the heat dissipation portion 3. The interface 9 will be described in detail later.
(control section 8)
The control unit 8 is provided on a main board 8a, and the main board 8a is disposed on an interface board 95 extending from the interface board 92. The main substrate 8a is disposed at the bottom of the internal space 2Ba of the rear case 2B.
The control section 8 drives the image display element 51 based on the signal received from the interface section 9. The image display element 51 generates projection light based on the control of the control unit 8.
The control unit of the image projection apparatus 1 is provided with a communication unit 8 b. The communication unit 8b can communicate with an external operation unit such as a computer disposed in a control room or the like separated from the image projection apparatus 1. When the communication unit 8b receives an operation signal from the external operation unit, the control unit 8 performs ON/OFF operation of the image projection apparatus 1 and driving of the illumination optical system 4, the heat dissipation unit 3, and the image display unit 5 in accordance with the operation signal.
Fig. 5 is an exploded view of the front case 2F, the rear case 2B, and the interface 9. Fig. 6 is an exploded view of the interface 9. Fig. 7 is a perspective view of the interface unit 9 viewed from a lower oblique side.
(mounting opening 28)
A front attachment opening 28F extending forward from the opening edge is provided on the upper surface of the front case 2F. A rear mounting opening 28B extending rearward from the opening edge is provided on the upper surface of the rear case 2B. When the rear case 2B and the front case 2F are integrally assembled as the case 2, the front attachment opening 28F and the rear attachment opening 28B are integrated with each other to form one attachment opening 28 extending in the front-rear direction. The interface 9 is attached to the attachment opening 28.
(interface part 9)
The interface portion 9 includes: an interface substrate 92 disposed inside the housing 2; a plurality of connection terminal portions 91 attached to the upper end of the interface substrate 92; and a cover member 93. Each of the plurality of connection terminal portions 91 has an insertion portion 99.
The cover member 93 covers the periphery of the plurality of connection terminal portions 91 except the insertion portion 99.
The interface 9 is fitted into the mounting opening 28 provided in the housing 2 in a state where the insertion portion 99 is exposed to the outside of the housing 2.
The interface portion 9 further includes a seal member 100 that covers the outer periphery of the cover member 93 and seals between the cover member 93 and the attachment opening portion 28.
(interface terminal part 91)
In the embodiment, the plurality of connection terminal portions 91 include: a LAN connection terminal unit to which an RJ45 plug can be connected; a USB connection terminal portion to which an external memory such as a USB (universal Serial bus) memory can be connected; an HDMI (registered trademark) connection terminal unit to which an HDMI (High-definition Multimedia Interface) (registered trademark) from a source device such as a DVD player or a Blu-ray (registered trademark) disc player can be connected; and a DC-IN connection terminal part for connecting the electric wire from an external power supply.
These connection terminal portions 91 are arranged and mounted on the upper end of the interface board 92 so that the insertion portions 99 are on the same plane.
(interface substrate 92)
The interface board 92 is a plate-like member extending downward from the upper end on which the connection terminal portion 91 is mounted. As shown in fig. 4, a flexible substrate 94 and an additional interface substrate 95 extend further from the interface substrate 92.
A pin insertion hole 98a and a screw insertion hole 98b into which a positioning pin 97a to be described later is inserted are provided in the interface substrate 92 at two locations, front and rear, below the portion where the connection terminal portion 91 is arranged.
(cover member 93)
As shown in fig. 6, the cover member 93 includes a first cover member 93A and a second cover member 93B.
(first cover member 93A)
The first cover member 93A is an integral member provided with a plurality of insertion portion openings 96 corresponding to the respective sizes of the plurality of connection terminal portions 91, and includes: an upper wall 93Aa covering an upper side of the insertion portion 99 side as the connection terminal portion 91; a right wall 93Ab covering the right side of the connection terminal portion 91; a front wall portion 93Ac covering the front side of the connection terminal portion 91; a rear wall portion 93Ad covering the rear side of the connection terminal portion 91; and a lower wall 93Ae covering the lower side of the connection terminal 91.
A flat right clamping surface (first clamping surface) is provided on the left surface of the lower wall 93Ae, and is in close contact with the right side of the interface substrate 92. Screw holes 97b and positioning pins 97a extending leftward are provided in the front and rear of the right clamping surface 93 Af.
(second cover part 93B)
The second cover member 93B is an integral member including: a left side wall 93Ba covering the left side of the connection terminal portion 91; and a lower wall 93Bb covering the lower side of the connection terminal 91.
A flat left clamping surface 93Bc (shown in fig. 7) that closely contacts the left surface of the interface substrate 92 extends further downward from the lower wall portion 93 Bb. Screw insertion holes 97c and pin insertion holes 97d corresponding to the screw holes 97b and positioning pins 97a of the right clamping surface 93Af are provided at two front and rear positions of the left clamping surface 93Bc, respectively.
The first cover member 93A is configured by: at the upper end portion of the interface substrate 92 to which the connection terminal portions 91 are attached, the insertion portions 99 of the corresponding connection terminal portions 91 are fitted into the respective insertion portion openings 96 of the upper wall portion 93Aa of the first cover member 93A.
At this time, the positioning pins 97a provided on the right clamping surface 93Af of the first cover member 93A are inserted into the corresponding pin insertion holes 98a provided on the interface substrate 92. Thereby, the first cover member 93A is positioned at the upper end of the interface substrate 92.
Next, the second cover member 93B is disposed on the left side of the first cover member 93A, and the positioning pins 97a are inserted into the pin insertion holes 97d of the second clamping surface 93 Bc.
In a state where the right surface of the interface board 92 abuts against the right clamping surface 93Af and the left surface of the interface board 92 abuts against the left clamping surface 93Bc, the screw 9N is inserted from 97c of the left clamping surface 93Bc, passes through the screw insertion hole 98b, and is screwed into the screw hole 97 b.
In this way, the right surface of the interface substrate 92 is in close contact with the right clamping surface 93Af, and the left surface of the interface substrate 92 is in close contact with the left clamping surface 93 Bc.
In this state, as shown in fig. 7, the interface substrate 92 extends downward from between the right clamping surface 93Af of the first cover member 93A and the left clamping surface 93Bc of the second cover member 93B.
Thus, the first cover member 93A and the second cover member 93B are integrated, and in a state where the insertion portion 99 is connectable from the outside, a part of the interface substrate 92 and the plurality of connection terminal portions 91 attached to the interface substrate 92 are disposed in the first space sealed from the outside while being isolated from the inside.
In order to close the joint between the first cover member 93A and the second cover member 93B, the entire periphery of the cover member 93 is covered with a seal member 100.
When the interface portion 9 covered with the sealing member 100 is inserted into the mounting opening portion 28, the interface portion 9 is held by the housing 2 in a state where the sealing member 100 seals between the mounting opening portion 28 and the interface portion 9.
In the cover member 93, an upper wall portion 93Aa (first wall portion) of the connection terminal portion 91 to which the insertion portion 99 is attached is fitted into the attachment opening portion 28 of the housing 2 to be exposed to the outside, and the insertion portion 99 is held so as to be connectable from the outside.
Here, as described above, the control unit 8 of the image projection apparatus 1 is provided with the communication unit 8 b. The communication unit 8b can communicate with an external operation unit such as a computer disposed in a control room or the like away from the image projection apparatus 1, and the control unit controls the image projection apparatus 1 through the communication unit 8 b. That is, as shown in fig. 1, the image projection apparatus 1 according to the embodiment does not include an operation unit such as a switch or a button on the surface of the housing.
Further, an inter-case seal member 23 is disposed between the front case 2F and the rear case 2B, and is in close contact with each other. Since the heat dissipation portion 3 is disposed outside the casing 2, it is not necessary to provide an air inlet or an air outlet in the casing 2. Since the image projection apparatus 1 is operated by an external operation unit, it is not necessary to provide an operation unit such as a switch or a button on the surface of the housing 2.
Thus, the holes provided in the case 2 in which the front case 2F and the rear case 2B are integrated are only the opening 25 for emitting projection light, the adjustment hole 21 for focus adjustment, and the attachment opening 28 for inserting the interface unit 9.
Since the light-transmitting member 27 is attached to the opening 25 for emitting the transmitted light, dust does not enter.
Since the adjustment hole 21 for focus adjustment is covered with the lid 26 except for the focus adjustment, dust does not enter.
Since the seal member 100 is disposed between the connection port 9 and the mounting opening 28 in the mounting opening 28 for mounting the connection port 9 provided in the housing 2, dust does not enter from between the connection port 9 and the mounting opening 28.
On the other hand, the insertion portion 99 of the connection terminal portion 91 needs to be exposed to the outside because it needs to be connected to the outside. Further, even if it is desired to manufacture the insertion portion opening 96 and the insertion portion 99 without a gap therebetween, a slight amount of dust may enter due to a manufacturing error, a fitting error, or the like.
Even if the insertion portion opening 96 and the insertion portion 99 are first brought into close contact with each other, a gap may be generated if the connection line and the insertion portion 9 are repeatedly connected and disconnected.
However, in the embodiment, the second space S2 sealed in the housing 2 is further provided with a first space S1 in which a part of the interface board 92 and the connection terminal portions 91 attached to a part of the interface board 92 are housed and the outer periphery is covered with the cover member 93 and sealed.
That is, even if dust intrudes into the first space S1 from between the opening 96 for the insertion portion and the insertion portion 99, the first space S1 and the second space S2 are further sealed, and thus the possibility of dust intruding into the second space S2 is low.
Even when a difference in air pressure (air flow) occurs between the inside and the outside of the housing 2 of the image projection apparatus 1, the inside of the housing of the image projection apparatus 1 is not directly affected by the fluctuation of the air pressure, and therefore, the entry of dust can be minimized.
Accordingly, even when the image projection apparatus 1 is used in a place where air is polluted, such as outdoor use, dust does not enter the inside of the housing 2.
Therefore, the possibility of the portion being damaged due to high temperature caused by adhesion of dust to the main board 8a of the control unit 8 or the like is reduced, and the life of the image projection apparatus 1 is extended. In addition, the possibility that the transmittance of the optical member is lowered by the dust, thereby deteriorating the image quality is reduced. Meanwhile, the image projection apparatus 1 can be used without maintenance at 20000H or more.
Further, no operation portion such as a switch or a button is provided on the surface of the housing 2. Therefore, it is possible to prevent a failure due to an excessively strong pressing of the operation portion. Further, since the operation portion is not provided, the degree of freedom in designing the shape of the housing 2 is also improved.
Description of the reference numerals
1: image projection apparatus, 2: housing, 2B: rear case, 2F: front case, 3: heat dissipation portion, 4: illumination optical system, 5: image display unit, 6: projection optical system, 7: concave mirror, 8: control unit, 8 b: communication unit, 9: interface section, 23: inter-case seal member, 25: opening, 26: lid portion, 27: light-transmitting member, 28: mounting opening, 28B: rear mounting opening, 28F: front attachment opening, 31: air intake fan, 32: exhaust fan, 33: heat sink, 33 a: heat radiation fan, 51: image display element, 61: focus adjustment unit, 91: connection terminal portion, 92: interface substrate, 93: cover member, 93A: first cover member, 93 Aa: upper wall portion (first wall portion), 93 Ab: right wall portion, 93 Ac: front wall portion, 93 Ad: rear wall, 93 Ae: lower wall, 93 Af: right clamping surface, 93B: second cover member, 93 Ba: left wall portion, 93 Bb: lower wall portion, 93 Bc: left clamping face, 94: flexible substrate, 95: interface substrate, 96: opening for insertion portion, 97 a: positioning pin, 98 a: pin insertion hole, 99: insertion portion, 100: sealing member, S1: first space, S2: second space
Claims (9)
1. An image projection apparatus comprising:
an illumination optical system for generating illumination light;
an image display element for modulating the illumination light to produce projection light;
a projection optical system for amplifying the projection light;
a control unit;
a connection terminal part provided with an insertion part for connection with the outside;
an interface board for connecting the connection terminal portion and the control portion;
a cover member that covers the connection terminal portion and a portion of the interface board to which the connection terminal portion is attached in a state in which the insertion portion is externally connectable, and that forms a first space isolated from the outside inside; and
and a housing that houses the illumination optical system, the image display element, the projection optical system, the control unit, the connection terminal unit, the interface substrate, and the cover member in a second space inside the cover member in a state in which a first wall portion of the cover member that covers the insertion portion in a state in which the cover member is connectable from outside is exposed to the outside.
2. The image projection arrangement of claim 1,
the cover member includes a first cover member and a second cover member,
a portion of the interface substrate extending from a portion located in the first space to the second space is held between the first holding surface and the second holding surface,
a first clamping surface provided on the first cover member and extending parallel to the interface substrate on one surface side of the interface substrate,
the second clamping surface is provided on the second cover member and extends parallel to the interface substrate on the other surface side of the interface substrate.
3. The image projection arrangement of claim 1,
the housing has a mounting opening for holding the first wall portion,
the cover member further includes a sealing member that covers an outer periphery of the cover member and seals a gap between the cover member and the mounting opening portion.
4. The image projection arrangement of claim 2,
the housing has a mounting opening for holding the first wall portion,
the cover member further includes a sealing member that covers an outer periphery of the cover member and seals a gap between the cover member and the mounting opening portion.
5. The image projection arrangement of claim 1,
the heat dissipation part is arranged outside the shell.
6. The image projection arrangement of claim 2,
the heat dissipation part is arranged outside the shell.
7. The image projection arrangement of claim 3,
the heat dissipation part is arranged outside the shell.
8. The image projection arrangement of claim 4,
the heat dissipation part is arranged outside the shell.
9. The image projection arrangement of any of claims 1 to 8,
an operation panel is not provided on the housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019207812A JP7386673B2 (en) | 2019-11-18 | 2019-11-18 | image projection device |
| JP2019-207812 | 2019-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112817202A true CN112817202A (en) | 2021-05-18 |
Family
ID=75854286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011285941.6A Pending CN112817202A (en) | 2019-11-18 | 2020-11-17 | Image projection apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7386673B2 (en) |
| CN (1) | CN112817202A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024085862A (en) * | 2022-12-15 | 2024-06-27 | 株式会社小糸製作所 | Optical member, illuminating device, and image projection device |
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| US20090163053A1 (en) * | 2007-12-25 | 2009-06-25 | Sumitomo Wiring Systems, Ltd. | Electrical junction box |
| CN102243420A (en) * | 2010-05-13 | 2011-11-16 | 三洋电机株式会社 | Projection display device |
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| Publication number | Publication date |
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| JP7386673B2 (en) | 2023-11-27 |
| JP2021081542A (en) | 2021-05-27 |
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