JP5092497B2 - Digital camera with built-in projector and projector device - Google Patents

Description

  The present invention relates to a projector apparatus provided with a projector module.

  In the projector device, heat generation of the light source (for example, high-brightness LED) cannot be ignored, and there is a concern about damage to the light source due to heat or an adverse effect on the image unless effective heat countermeasures are taken. For example, Patent Documents 1 and 2 describe a countermeasure against heat of the light source.

JP 2004-4581 A JP 2004-69825 A

  The heat countermeasures in Patent Documents 1 and 2 require the addition of a heat conductive heat dissipation member, a cooling Peltier element, etc., so the number of parts increases, and no effort has been made to efficiently release heat to the outside. , Heat dissipation is insufficient.

According to a first aspect of the present invention, there is provided a digital camera with a built-in projector, which is disposed between a camera unit having an imaging function, a battery chamber that houses a power supply battery, a camera unit and the battery chamber, and a light source, an image forming member, and a heat radiating member. A projector module for forming a projection light image from image data and projecting the image to the outside, and a metal outer cover for housing the camera unit, the projector module and the battery chamber. The luminous flux from the subject enters the camera unit from the front surface of the outer cover, the light image for projection of the projector module is projected from the front surface of the outer cover, and display means is provided on the rear surface of the outer cover. Is composed of a first portion extending in a direction substantially orthogonal to the optical axis of the light source and closely contacting the light source, and a second portion extending in the optical axis direction of the light source. Is substantially L-shaped blocks, the second portion of the metal block, characterized in that it is in close contact with the front surface of the inner surface of the outer cover in order to release the heat of the light source to the outside of the apparatus.
A digital camera with a built-in projector according to a third aspect of the present invention includes a camera unit, a battery chamber, a projector module, and an outer cover similar to those described above, and the second part of the metal block of the projector module is a device that heats the light source It is characterized by being in close contact with the inner surface near the center of the front surface of the outer cover so as to be released to the outside.
The invention of claim 7 is applied to a projector apparatus that includes a light source, an image forming member, and a heat radiating metal block, forms a projection light image from image data, and projects the image to the outside. The projection light image of the projector device is projected from the front surface of the outer cover, and display means is provided on the rear surface of the outer cover. The light source extends in a direction substantially perpendicular to the optical axis of the light source. Is provided with a substantially L-shaped metal block composed of a first part to which the light source is closely attached and a second part extending in the optical axis direction of the light source, and the first of the metal block to release heat from the light source to the outside of the apparatus. The portion 2 is in close contact with the inner surface of the front surface of the outer cover.

  According to the present invention, a highly efficient heat dissipation structure can be realized without providing a heat dissipation fan, a Peltier element, or the like.

An embodiment when the present invention is applied to a projector built-in digital camera will be described with reference to FIGS.
FIG. 1 is a front view of the internal structure of a digital camera according to this embodiment, FIG. 2 is a sectional view taken along line II-II, and FIG. 3 is a sectional view taken along line III-III. The camera body 100 has a substantially rectangular shape when viewed from the front, and a plurality of operation buttons 1 are provided on the upper surface thereof. Reference numerals 100A and 100B in FIG. 3 denote front / rear covers constituting the outer shell of the camera body 100. The front cover 100A includes a metal outer cover 100Ao and a resinous inner cover 100Ai fixed to the inner surface. Composed. The rear cover 100B is made of metal.

  Inside the camera body 100, the battery chamber 10 is disposed on the left side, and the camera unit 20 is disposed on the right side, and the projector module 30 is disposed therebetween. The battery chamber 10 is loaded with a power battery from the bottom of the camera, for example.

  The camera unit 20 includes a bending type imaging optical system 21, a lens barrier 22, an imaging unit 23, and the like. The photographing optical system 21 incorporates a plurality of lenses, a mirror which is a bending optical system, an optical image blur correction mechanism, and the like. The light flux from the subject enters the objective lens 21a exposed to the front of the camera body, is bent downward by the mirror, passes through the lens group, and then enters the imaging unit 23. Reference numeral 21b denotes an image blur correction unit incorporating an optical image blur correction mechanism.

  The lens barrier 22 can be rotated about the axis X by a barrier drive motor 22a (FIG. 2), and can take a protection position that covers the front surface of the objective lens 21a and a retreat position that retreats from the lens 21a. A control circuit (not shown) drives the lens barrier 22 from the protected position to the retracted position in response to the power switch being turned on, and drives the lens barrier 22 to the protected position in response to the power off.

  The imaging unit 23 is provided with an imaging element, an optical filter, and the like. The light beam that has passed through the photographic optical system 21 is received by the image sensor near the bottom of the camera and subjected to photoelectric conversion, and various processes are applied to the photoelectric conversion output to generate image data. The image data is recorded on a memory card loaded in the card slot 40.

Next, the projector module 30 will be described.
As shown in the enlarged view of FIG. 4, the projector module 30 includes a light source 31 such as a high-intensity LED, a condenser lens 32, a polarization beam splitter (hereinafter referred to as PBS) 33, and a reflective liquid crystal panel 34 such as LCOS. The projection lens 35, the mirror 36, and a case 37 for housing them. A transmissive liquid crystal panel may be used.

  The light source 31 and the condensing lens 32 are disposed in the horizontal portion 30B that protrudes in the lateral direction from the location (bending portion 30A) where the PBS 33 is disposed, and the projection lens 35 and the mirror 36 protrude in the vertical direction from the bending portion 30A. Arranged in the vertical portion 30C. In the present embodiment, since the projector module 30 is arranged so that the horizontal portion 30B protrudes to the left side in FIG. It can be minimized.

  Reference numeral 38 denotes a metal (for example, aluminum) heat dissipation block integrated with the projector module 30 in advance, and the heat transfer portion 38a and the heat dissipation portion 38b form a substantially L shape (see FIG. 3). The heat transfer unit 38 a is closely fixed to the light source 31 in a state extending in a direction orthogonal to the optical axis of the light source 31, and the heat radiating unit 30 b extends in a direction away from the light source 31 in the optical axis direction of the light source 31.

  The projector module 30 is integrated with the front cover 100A in advance as a front cover set. In the present embodiment, a plurality of threaded projections PR are formed on the inner cover (resin cover) 100Ai of the front cover 100A, and the case 37 of the projector module 30 is fixed thereto with screws BS. At that time, the heat radiating portion 38b of the heat radiating block 38 is brought into close contact with the back surface of the outer cover (metal cover) 100Ao through a hole provided in the inner cover 100Ai. In the figure, the heat radiating portion 38b is tightly fixed to the outer cover 100Ao via a heat conductive double-sided adhesive tape TP. As described above, by assembling the projector module 30 to the front cover 100A in advance, the work of bringing the heat radiation part 38b into close contact with the outer cover 100Ao can be easily performed.

  Using the projector module 30 as described above, desired image data recorded on the memory card can be projected to the outside. The control circuit of the camera sends the image data to the liquid crystal panel 34 via the flexible printed board 39 and displays it. When the light source 31 is turned on in this state, the light source light passes through the condenser lens 32 and the PBS 33 and enters the reflective liquid crystal panel 34. The reflected light image is bent 90 degrees upward by the PBS 33, and the projection lens 35 and the mirror Projected to the front of the camera via 36.

  The heat generated from the light source 31 is transmitted from the heat transfer portion 38a of the heat dissipation block 38 to the heat dissipation portion 38b, and is released to the outside through the metal outer cover 100Ao. As can be seen from FIG. 3, the space between the heat transfer portion 38a and the heat radiating portion 38b while ensuring a sufficient contact area between the heat radiating portion 38b and the outer cover 100Ao by making the heat radiating block 38 L-shaped. Can interrupt a part of the battery chamber 10. Therefore, effective use of the camera internal space can be achieved without impairing the high heat dissipation efficiency.

  In the figure, 51 is a light emitting part of the flash device, 52 is a capacitor for storing charges for light emission, 53 is a tripod mount provided below the projector module 30, 54 is a terminal for connecting an external device, 55 is an image, etc. A liquid crystal monitor 56 for displaying images externally is a main board of the camera.

  Of the cover of the camera body, the location where the heat dissipation block is in close contact varies depending on the position of the projector module. For example, you may make it closely_contact | adhere to the back cover 100B. In addition, although an example in which a projector module is provided in a digital camera has been described above, the present invention is also applied to a camera-equipped mobile phone or other electronic device provided with a projector module, or a projector built-in device that does not have a photographing function. Applicable.

The figure which looked at the internal structure of the digital camera with a built-in projector in one Embodiment from the front. II-II sectional view taken on the line of FIG. III-III sectional view taken on the line of FIG. The figure which expands and shows the principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Battery chamber 20 Camera unit 21 Image pick-up optical system 23 Imaging part 30 Projector module 31 Light source 33 Polarizing beam splitter 34 Reflective liquid crystal panel 35 Projection lens 38 Heat radiation block 38a Heat transfer part 38b Heat radiation part 40 Card slot 100 Camera main body 100A Front cover 100Ai Inner cover (resin cover)
100Ao outer cover (metal cover)
199B Rear cover

Claims (10)

A camera unit having an imaging function;
A battery compartment containing a power battery,
A projector module disposed between the camera unit and the battery chamber, having a light source, an image forming member, and a heat dissipating metal block, forming a projection light image from image data and projecting the image to the outside;
A metal outer cover that houses the camera unit, the projector module, and the battery chamber;
The luminous flux from the subject enters the camera unit from the front surface of the outer cover, and the projection light image of the projector module is projected from the front surface of the outer cover.
Display means is provided on the rear surface of the outer cover,
The metal block extends in a direction substantially perpendicular to the optical axis of the light source, and a first portion to which the light source is in close contact, and a second portion extending in the optical axis direction of the light source. It is a letter-shaped block,
The digital camera with a built-in projector, wherein the second portion of the metal block is in close contact with an inner surface of the front surface of the outer cover so as to release heat of the light source to the outside of the apparatus . 2. The projector built-in according to claim 1, wherein the second portion of the metal block is in close contact with an inner surface near a center of a front surface of the outer cover so as to release heat of the light source to the outside of the apparatus. Digital camera . A camera unit having an imaging function;
A battery compartment containing a power battery,
A projector module disposed between the camera unit and the battery chamber, having a light source, an image forming member, and a heat dissipating metal block, forming a projection light image from image data and projecting the image to the outside;
A metal outer cover that houses the camera unit, the projector module, and the battery chamber;
The metal block extends in a direction substantially perpendicular to the optical axis of the light source, and a first portion to which the light source is in close contact, and a second portion extending in the optical axis direction of the light source. It is a letter-shaped block,
The digital camera with a built-in projector, wherein the second portion of the metal block is in close contact with an inner surface near a center of a front surface of the outer cover so as to release heat of the light source to the outside of the apparatus . The digital camera with a built-in projector according to any one of claims 1 to 3, wherein the metal block is closely fixed to the outer cover via a thermally conductive member. The projector built-in digital camera according to claim 1, wherein the projector module is integrated with the outer cover in advance as an outer cover set . The digital camera with a built-in projector according to claim 5, wherein a resin cover is integrated inside the outer cover, and the projector module is fixed to the resin cover. In a projector apparatus having a light source, an image forming member, and a metal block for heat dissipation, and forming a projection light image from image data and projecting it outside,
  The outer cover of the projector device is made of metal,
  The light image for projection of the projector device is projected from the front surface of the outer cover,
  Display means is provided on the rear surface of the outer cover,
  A substantially L-shaped metal block comprising a first portion extending in a direction substantially orthogonal to the optical axis of the light source and closely contacting the light source, and a second portion extending in the optical axis direction of the light source. With
  A projector apparatus, wherein the second portion of the metal block is brought into close contact with the inner surface of the front surface of the outer cover in order to release heat of the light source to the outside of the apparatus. The projector device according to claim 7, wherein the metal block is tightly fixed to the outer cover via a thermally conductive member. 9. The projector device according to claim 7, wherein a projector module having a light source, an image forming member, and a heat radiating metal block is integrated with the outer cover in advance as an outer cover set. The projector apparatus according to claim 9, wherein a resin cover is integrated inside the outer cover, and the projector module is fixed to the resin cover.

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