JP5344126B2 - Electronic apparatus and photographing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment capable of reliably radiating heat of a heat generation source. <P>SOLUTION: The electronic equipment includes a housing in which a projection device 28 is housed, and a press-contact member 54 which is attached to a heat radiation member 50 provided in the projection device 28 and brought into press-contact with an inner wall surface of the housing, wherein the center of gravity G in a press-contact area of the press-contact member 54 is positioned on or near at least one line out of lines linking centers C1 and C2 of two fixed positions where the projection device 28 is fixed in the housing. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electronic apparatus and a photographing apparatus provided with a projector unit.

In an imaging apparatus equipped with a projector unit, when projecting an image using the projector unit, the temperature in the imaging apparatus may rise due to heat generated from the light source, etc., so heat is dissipated to ensure the reliability of each part of the apparatus. It is necessary to make sure. As a heat dissipation method, a technique has been proposed in which a heat transfer member formed of a metal plate having a spring property is interposed between the heat source and the housing, and the heat source and the housing are connected to radiate heat. (For example, refer to Patent Document 1).
JP 2007-165686 A

  By the way, in a photographing apparatus provided with a projector unit (projection apparatus), the projector unit is fixed to a housing for housing the projector unit using screws or the like. However, depending on the position to be fixed, a heat radiating sheet (pressure contact member) or the like for transmitting the heat of the heat source may not be sufficiently adhered to the housing, and in this case, a sufficient heat radiating effect cannot be obtained.

  The objective of this invention is providing the electronic device and imaging device which can perform heat radiation of a heat-generation source reliably.

The electronic apparatus of the present invention is a projection device housed in a housing, provided with a light source, a projection optical system that projects light emitted from the light source, and closer to the projection optical system than the light source, A first fixing member having a first through hole for fixing the projection device to the housing; and a first fixing member provided on the light source side of the projection optical system, for fixing the projection device to the housing. A projection device including a second fixing member having two through holes, and a heat dissipation member provided in the light source , and press-contacted to the inner wall surface of the housing by the first fixing member and the second fixing member and a pressing member that is, the pressure contact member, as the center of gravity of the press-contact region is located on a straight line or in the vicinity of a straight line connecting the center of said second through hole and a center of the first through hole It is provided .

The imaging device of the present invention is an imaging device housed in a housing, a projection device housed in the housing, a light source, a projection optical system that projects light emitted from the light source, A first fixing member provided on the projection optical system side relative to the light source, and having a first through hole for fixing the projection device to the housing; and provided on the light source side relative to the projection optical system, A projection device including a second fixing member having a second through hole for fixing the projection device to the housing; and a heat dissipation member provided in the light source , the first fixing member and the A pressure contact member that is pressed against the inner wall surface of the housing by a second fixing member , wherein the pressure contact member has a center of gravity of the pressure contact region between the center of the first through hole and the center of the second through hole. provided so as to be positioned on a straight line or in the vicinity of a straight line connecting And said that you are.

  According to the electronic apparatus and the photographing apparatus of the present invention, it is possible to reliably radiate the heat source.

  A camera according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an appearance of a camera according to an embodiment. The camera 2 includes a front cover 4 and a back cover 6 made of a metal such as an aluminum sheet metal. The front cover 4 is provided with a photographing window 8, a projector projection window 10, and a flash window 12 through which flash light is emitted. It has been. Further, on the upper part of the camera 2, a power switch 14, a shutter button 16 for instructing a release operation, a mode switching button 18 for switching between a shooting mode for performing camera shooting and a projector mode for performing projector projection, and a projection image at the time of projector projection A projector focus lever 20 or the like that is an operation lever for performing focus adjustment is provided.

  FIG. 2 is a diagram illustrating the configuration of the back surface of the camera 2 according to the embodiment. The back cover 6 of the camera 2 is provided with an operation unit 24 that includes an LCD display unit 22 that displays and plays back captured images, a multi-selector that selects shooting conditions displayed on the LCD display unit 22, and the like. . In the present embodiment, the front cover 4 and the back cover 6 made of metal are used, but a front cover and a back cover made of plastic may be used.

  FIG. 3 is a front view showing the arrangement of the units accommodated in the camera 2 according to the embodiment. Inside the camera 2, power is supplied to an imaging unit 26 having an imaging device for imaging a subject, a projector unit 28 having an optical system for projecting an optical image for projection, the imaging unit 26, and the projector unit 28. A battery chamber 30 is provided for accommodating a battery to be operated.

  FIG. 4 is a cross-sectional view showing a configuration of projector unit 28 according to the embodiment. Light emitted from an LED (light emitting diode) 32 that is a light source is converted into substantially parallel light by a condenser lens 34, and enters a polarization beam splitter 36 that separates incident light into P-polarized component light and S-polarized component light. Incident. Of the light incident on the polarization beam splitter 36, the S-polarized component light is reflected downward in FIG. 4 and is incident on the lower surface 36a that has been subjected to non-reflective processing such as black processing. Of the light incident on the polarization beam splitter 36, the P-polarized component light is transmitted through the polarization beam splitter 36 and incident on an LCOS (reflection liquid crystal element) 38 that displays an image projected by the projector unit 28.

  Here, a liquid crystal layer (not shown) constituting the LCOS 38 functions as a phase plate for incident light when a voltage is applied. Therefore, the light that has passed through the pixel region to which the voltage is applied by the liquid crystal layer in the light emitted from the LCOS 38 is converted from the P-polarized component light to the S-polarized component light, and the light emitted from the LCOS 38 is converted by the liquid crystal layer. The light that has passed through the image area to which no voltage is applied travels as P-polarized component light.

  The light that has entered the polarization beam splitter 36 again as mixed light of the S polarization component and the P polarization component is reflected by the polarization beam splitter 36 only on the light of the S polarization component. The S-polarized component light reflected by the polarization beam splitter 36 is output from the projector projection window 10 via a projection lens 40 for projecting the projection optical image and a mirror 42 for deflecting the projection direction of the projection optical image. Projected in front of the camera 2. That is, the image displayed on the LCOS 38 is read out as a projection optical image and projected in the forward direction of the camera 2.

  5A is a front view showing the configuration of the projector unit 28 according to the embodiment, FIG. 5B is a plan view thereof, FIG. 5C is a right side view thereof, and FIG. FIG. 7 is a rear view of the projector unit 28 disposed inside the front cover 4 of the camera 2 according to the embodiment. 5A, 5C, and 7, the wiring part 44 is illustrated. As shown in FIGS. 5 and 6, the projector unit 28 is provided with a heat radiating member 50 having an L-shape on the right side of the LED 32 in FIG. 6. The heat dissipating member 50 is made of a metal having excellent heat conductivity, and is positioned and fixed by a heat dissipating member holding plate 52 and a boss (not shown) provided on the projector unit 28. Further, a heat radiating sheet 54 as a pressure contact member is provided between the inner wall surface of the front cover 4 and the heat radiating member 50. The heat dissipating sheet 54 is affixed to the heat dissipating member 50, and is composed of a member having excellent heat dissipation and elasticity. By bringing the heat dissipation sheet 54 into pressure contact with the inner wall surface of the front cover 4, heat from the LEDs 32 is conducted to the front cover 4 via the heat dissipation member 50 and the heat dissipation sheet 54, and is released from the front cover 4 to the outside air or the like.

  Here, as shown in FIG. 6, an inner cover 56 made of resin or the like is provided on the inner wall surface of the front cover 4 with adhesive tape or the like, but the resin or the like is thermally conductive. Since it is not excellent, the inner cover 56 is not provided in the portion where the heat dissipation sheet 54 is pressed.

  Further, as shown in FIG. 7, the projector unit 28 is positioned substantially at the center of the camera 2, and through-holes 60a and 62a for inserting screws into the upper right part and the lower left part of the projector unit 28 in FIG. The fixing members 60 and 62 having the above are provided. The projector unit 28 is fixed to the inner wall surface of the front cover 4 by inserting screws (not shown) into the through holes 60 a and 62 a and tightening the screws into screw holes (not shown) provided inside the front cover 4. Is done.

  In this embodiment, the fixing members 60 and 62 and the heat radiation sheet 54 have the center of gravity in the pressure contact area of the heat radiation sheet 54 pressed against the inner wall surface of the front cover 4 to fix the projector unit 28 to the front cover 4. It is provided in the projector unit 28 so as to be located on or near a straight line connecting the centers of the two fixed positions, that is, the center positions of the screws inserted into the through holes 60a and 62a. That is, as shown in FIG. 6A, when the gravity center position in the pressure contact region of the heat radiation sheet 54 is G, the gravity center position G connects the screw center positions C1 and C2 inserted into the through holes 60a and 62a. Located on a straight line.

  According to the camera of the present embodiment, the center of gravity G in the pressure contact area of the heat dissipation sheet 54 is located on a straight line connecting the center positions C1 and C2 of the screws inserted into the through holes 60a and 62a. The heat radiating sheet 54 can be reliably pressed against the inner wall surface of the cover 4. That is, it is possible to increase the pressure contact area of the heat radiating sheet 54 that is pressed against the inner wall surface of the front cover 4. Therefore, since the area | region thermally radiated from the thermal radiation sheet 54 to the front cover 4 can be enlarged, the thermal radiation effect can be improved. Further, since it is not necessary to provide a spring, a screw, or the like for pressing the heat dissipation sheet 54 against the front cover 4, cost reduction and space saving can be achieved.

  In the present embodiment, the two fixing members 60 and 62 are provided, but three or more fixing members may be provided. In this case, each member is arranged such that the center of gravity of the pressure contact area of the heat dissipation sheet 54 is located on or near at least one straight line connecting the centers of the two fixing members.

  In this embodiment, a camera is described as an example of a photographing device. However, the present invention can be applied to other photographing devices or other electronic devices (for example, a mobile phone).

It is a perspective view which shows the external appearance of the camera which concerns on embodiment of this invention. It is a figure which shows the structure of the back surface of the camera which concerns on embodiment of this invention. It is a front view which shows arrangement | positioning of each unit accommodated in the camera inside which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the projector unit which concerns on embodiment of this invention. It is a figure which shows the structure of the projector unit which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the projector unit which concerns on embodiment of this invention. It is a rear view of the projector unit arrange | positioned inside the front cover of the camera which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Camera, 4 ... Front cover, 6 ... Back cover, 10 ... Projector projection window, 26 ... Imaging unit, 28 ... Projector unit, 30 ... Battery compartment, 32 ... LED, 36 ... Polarizing beam splitter, 38 ... LCOS, 50 ... Heat dissipation member, 52 ... Heat release member pressing plate, 54 ... Heat release sheet, 60, 62 ... Fixing member.

Claims (6)

A projection device housed in a housing, the light source, a projection optical system that projects light emitted from the light source, and the projection optical system side of the light source, the projection device being provided in the housing A first fixing member having a first through hole for fixing to the projector, and a second fixing member provided on the light source side of the projection optical system and having a second through hole for fixing the projection device to the housing. A projection device comprising: a fixing member;
A pressure contact member attached to a heat dissipating member provided in the light source , and pressed against an inner wall surface of the housing by the first fixing member and the second fixing member ;
The pressure contact member is characterized in that the center of gravity of the press-contact region is provided so as to be located on a straight line or in the vicinity of a straight line connecting the center of said second through hole and a center of the first through hole Electronics.   The electronic device according to claim 1, wherein the pressure contact member is formed of a member having excellent heat dissipation.   The electronic device according to claim 1, wherein the pressure contact member is formed of a member having excellent elasticity. An imaging device housed in a housing;
A projection apparatus housed in the housing, the light source, a projection optical system that projects light emitted from the light source, and the projection optical system side of the light source, the projection apparatus being disposed in the housing A first fixing member having a first through hole for fixing to the body, and a second fixing hole provided on the light source side of the projection optical system and having a second through hole for fixing the projection device to the housing. A projection device including two fixing members;
A pressure contact member attached to a heat dissipating member provided in the light source , and pressed against an inner wall surface of the housing by the first fixing member and the second fixing member ;
The pressure contact member is characterized in that the center of gravity of the press-contact region is provided so as to be located on a straight line or in the vicinity of a straight line connecting the center of said second through hole and a center of the first through hole Shooting device.   The photographing apparatus according to claim 4, wherein the pressure contact member is formed of a member having excellent heat dissipation.   6. The photographing apparatus according to claim 4, wherein the pressure contact member is configured by a member having excellent elasticity.

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