JP2008249955A - Projector device - Google Patents

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JP2008249955A
JP2008249955A JP2007090693A JP2007090693A JP2008249955A JP 2008249955 A JP2008249955 A JP 2008249955A JP 2007090693 A JP2007090693 A JP 2007090693A JP 2007090693 A JP2007090693 A JP 2007090693A JP 2008249955 A JP2008249955 A JP 2008249955A
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light source
projector
cover
outer cover
metal block
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JP5092497B2 (en
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Takao Goto
孝夫 後藤
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Nikon Corp
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Nikon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain high-efficiency heat radiation structure without providing a heat radiation fan and a Peltier element. <P>SOLUTION: A projector module 30 is integrated with a front cover 100A as a set of front cover parts in advance. In such a case, the heat radiation part 38b of a heat radiation block 38 is brought into contact with the back surface of an external cover (metallic cover) 100Ao through a hole provided on an internal cover 100Ai. Heat emitted from a light source 31 is transferred to the heat radiation part 38b from the heat transfer part 38a of the heat radiation block 38, and discharged to the outside through the external cover 100Ao made of metal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、プロジェクタモジュールを備えたプロジェクタ装置に関する。   The present invention relates to a projector apparatus provided with a projector module.

プロジェクタ装置においては、その光源(例えば、高輝度LED)の発熱が無視できず、有効な熱対策を講じないと熱による光源の破損や、画像への悪影響が懸念される。光源の熱対策を講じたものとして、例えば特許文献1,2に記載されたものがある。   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.

特開2004−4581号公報JP 2004-4581 A 特開2004−69825号公報JP 2004-69825 A

特許文献1,2における熱対策は、熱伝導性の放熱部材や冷却用のペルチェ素子などを追加する必要があるため部品点数が増加し、また熱を外部に効率よく逃がす工夫はなされておらず、放熱が不十分である。   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.

本発明は、光源および画像形成部材を有し、画像データから投影用の光像を形成して外部に投影するプロジェクタ装置において、プロジェクタ装置の外カバーを金属製とするとともに、光源の光軸と略直交する方向に延在し光源が密着される第1の部分と、光源の光軸方向に光源から遠ざかる方向に延在する第2の部分とから成る略L字状の金属ブロックを備え、光源の熱を装置外に放出すべく金属ブロックの上記第2の部分を外カバーの内面に密着させたことを特徴とする。
金属ブロックの第1,第2の部分の間の空間に、他の構成部品の少なくとも一部を位置させてもよい。
熱伝導性の部材を介して金属ブロックを外カバーに密着固定してもよい。
光源,画像形成部材および金属ブロックは、外カバー部組として予め外カバーに一体化させておいてもよい。この場合、外カバーの内側に樹脂カバーを一体化し、光源,画像形成部材および金属ブロックを少なくとも含むプロジェクタモジュールを、樹脂カバーに固定してもよい。
The present invention relates to a projector apparatus that includes a light source and an image forming member, forms an optical image for projection from image data, and projects the image to the outside. The outer cover of the projector apparatus is made of metal and the optical axis of the light source A substantially L-shaped metal block comprising a first portion extending in a substantially orthogonal direction and closely contacting the light source, and a second portion extending in a direction away from the light source in the optical axis direction of the light source; The second portion of the metal block is in close contact with the inner surface of the outer cover in order to release the heat of the light source to the outside of the apparatus.
You may position at least one part of another component in the space between the 1st, 2nd part of a metal block.
The metal block may be tightly fixed to the outer cover via a heat conductive member.
The light source, the image forming member, and the metal block may be integrated with the outer cover in advance as an outer cover set. In this case, a resin cover may be integrated inside the outer cover, and the projector module including at least the light source, the image forming member, and the metal block may be fixed to the resin cover.

本発明によれば、放熱ファンやペルチェ素子などを設けることなく高効率の放熱構造を実現できる。   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.

図1〜図4により本発明をプロジェクタ内蔵デジタルカメラに適用した場合の一実施形態を説明する。
図1は本実施形態におけるデジタルカメラの内部構造を正面から見た図、図2はそのII−II線断面図、図3は同III−III線断面図である。カメラ本体100は、正面から見たときにほぼ矩形形状を呈し、その上面には複数の操作ボタン1が設けられている。図3の100A,100Bは、カメラ本体100の外郭を構成する前/後カバーであり、前カバー100Aは、金属製の外カバー100Aoと、その内面に固定される樹脂性の内カバー100Aiとから構成される。後カバー100Bは金属製である。
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 the present 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.

カメラ本体100の内部には、左側に電池室10が、右側にカメラユニット20がそれぞれ配置され、それらの間にプロジェクタモジュール30が配置される。電池室10には、例えばカメラ底面から電源電池が装填される。   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.

カメラユニット20は、屈曲式の撮影光学系21、レンズバリア22、撮像部23などから構成される。撮影光学系21は、複数のレンズや屈曲光学系であるミラー、光学式像振れ補正機構などを内蔵する。被写体からの光束は、カメラ本体正面に露出する対物レンズ21aに入射した後、ミラーで下方に折り曲げられ、レンズ群を透過した後、撮像部23に入射する。21bは光学式像振れ補正機構を内蔵する像振れ補正部である。   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.

レンズバリア22は、バリア駆動モータ22a(図2)により軸Xを中心に回動可能とされ、対物レンズ21aの前面を覆う保護位置と、レンズ21aから退避する退避位置とを取り得る。不図示の制御回路は、電源スイッチのオンに応答してレンズバリア22を保護位置から退避位置に駆動し、電源オフに応答して保護位置に駆動する。   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.

撮像部23には、撮像素子や光学フィルタなどが設けられる。撮影光学系21を通過した光束は、カメラ底部付近において撮像素子に受光されて光電変換され、その光電変換出力に種々の処理が加えられて画像データが生成される。画像データは、カードスロット40に装填されたメモリカードに記録される。   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.

次に、プロジェクタモジュール30について説明する。
図4の拡大図に示すように、プロジェクタモジュール30は、高輝度LED等の光源31と、集光レンズ32と、偏光ビームスプリッタ(以下、PBS)33と、LCOS等の反射型液晶パネル34と、投影レンズ35と、ミラー36と、これらを収容するケース37とを有する。なお、透過型の液晶パネルを用いたものでもよい。
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. Note that a transmissive liquid crystal panel may be used.

光源31および集光レンズ32は、PBS33が配置される箇所(屈曲部30A)から横方向に突出する水平部30Bに配置され、投影レンズ35およびミラー36は、屈曲部30Aから鉛直方向に突出する垂直部30Cに配置される。本実施形態では、水平部30Bが図1の左側に突出するようにプロジェクタモジュール30を配置したので、熱源である光源31を撮像部23から極力遠ざけることができ、熱ノイズによる画像への影響を最小限に抑制できる。   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 in FIG. 1, the light source 31 that is a heat source can be as far away as possible from the imaging unit 23, and the influence of the thermal noise on the image can be reduced. It can be minimized.

38は、プロジェクタモジュール30に予め一体化された金属製(例えば、アルミ製)の放熱ブロックであり、熱伝達部38aと放熱部38bとが略L字を形成して成る(図3参照)。熱伝達部38aは、光源31の光軸と直交する方向に延在する状態で光源31に密着固定され、放熱部30bは、光源31の光軸方向に光源31から遠ざかる方向に延在する。   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.

上記プロジェクタモジュール30は、予め前カバー部組として前カバー100Aに一体化される。本実施形態では、前カバー100Aの内カバー(樹脂カバー)100Aiに複数のねじ孔付き凸部PRを形成しておき、ここにプロジェクタモジュール30のケース37をビスBSで固定する。その際、上記放熱ブロック38の放熱部38bが、内カバー100Aiに設けた孔を介して外カバー(金属カバー)100Aoの裏面に密着される。図では、熱伝導性の両面接着テープTPを介して放熱部38bを外カバー100Aoに密着固定させている。このようにプロジェクタモジュール30を予め前カバー100Aに部組化することで、放熱部38bを外カバー100Aoに密着させる作業が楽に行える。   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.

以上のようなプロジェクタモジュール30を用いて、メモリカードに記録された所望の画像データを外部に投影することができる。カメラの制御回路は、フレキシブルプリント基板39を介して画像データを液晶パネル34に送り、表示させる。この状態で光源31を点灯すると、光源光は集光レンズ32およびPBS33を透過して反射型液晶パネル34に入射し、その反射光像がPBS33で上方に90度屈曲され、投影レンズ35およびミラー36を介してカメラ正面に投影される。   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.

光源31から発した熱は、放熱ブロック38の熱伝達部38aから放熱部38bに伝わり、金属製の外カバー100Aoを介して外部に放出される。図3から分かるように、放熱ブロック38をL字状としたことで、放熱部38bと外カバー100Aoとの接触面積を十分確保しつつも、熱伝達部38aと放熱部38bとの間の空間に電池室10の一部を割り込ませることができる。したがって、放熱高効率を損なわずにカメラ内空間の有効利用が図れる。   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.

なお図において、51は閃光装置の発光部、52は発光用の電荷を蓄えるコンデンサ、53はプロジェクタモジュール30の下方に設けた三脚座、54は外部機器を接続するための端子、55は画像等を外部表示するための液晶モニタ、56はカメラのメイン基板である。   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.

カメラ本体のカバーのうち放熱ブロックを密着させる箇所は、プロジェクタモジュールの配置位置によって変わってくる。例えば後カバー100Bに密着させるようにしてもよい。また、以上はデジタルカメラにプロジェクタモジュールを設けた例を示したが、カメラ付き携帯電話機やその他の電子機器にプロジェクタモジュールを設けたもの、さらには撮影機能を持たないプロジェクタ内蔵機器にも本発明を適用できる。   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.

一実施形態におけるプロジェクタ内蔵デジタルカメラの内部構造を正面から見た図。The figure which looked at the internal structure of the digital camera with a built-in projector in one Embodiment from the front. 図1のII−II線断面図。II-II sectional view taken on the line of FIG. 図1のIII−III線断面図。III-III sectional view taken on the line of FIG. 図1の要部を拡大して示す図。The figure which expands and shows the principal part of FIG.

符号の説明Explanation of symbols

10 電池室
20 カメラユニット
21 撮影光学系
23 撮像部
30 プロジェクタモジュール
31 光源
33 偏光ビームスプリッタ
34 反射型液晶パネル
35 投影レンズ
38 放熱ブロック
38a 熱伝達部
38b 放熱部
40 カードスロット
100 カメラ本体
100A 前カバー
100Ai 内カバー(樹脂カバー)
100Ao 外カバー(金属カバー)
199B 後カバー
DESCRIPTION OF SYMBOLS 10 Battery compartment 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 (5)

光源および画像形成部材を有し、画像データから投影用の光像を形成して外部に投影するプロジェクタ装置において、
当該プロジェクタ装置の外カバーを金属製とするとともに、
前記光源の光軸と略直交する方向に延在し前記光源が密着される第1の部分と、前記光源の光軸方向に前記光源から遠ざかる方向に延在する第2の部分とから成る略L字状の金属ブロックを備え、前記光源の熱を装置外に放出すべく前記金属ブロックの前記第2の部分を前記外カバーの内面に密着させたことを特徴とするプロジェクタ装置。
In a projector apparatus having a light source and an image forming member, forming a projection light image from image data and projecting the image to the outside,
The outer cover of the projector device is made of metal,
Approximately composed of a first part extending in a direction substantially perpendicular to the optical axis of the light source and closely contacting the light source, and a second part extending in a direction away from the light source in the optical axis direction of the light source. A projector apparatus comprising an L-shaped metal block, wherein the second portion of the metal block is brought into close contact with an inner surface of the outer cover so as to release heat of the light source to the outside of the apparatus.
前記金属ブロックの前記第1,第2の部分の間の空間に、他の構成部品の少なくとも一部が位置することを特徴とする請求項1に記載のプロジェクタ装置。   The projector device according to claim 1, wherein at least a part of another component is located in a space between the first and second portions of the metal block. 熱伝導性の部材を介して前記金属ブロックを前記外カバーに密着固定したことを特徴とする請求項1または2に記載のプロジェクタ装置。   The projector apparatus according to claim 1, wherein the metal block is closely fixed to the outer cover via a thermally conductive member. 前記光源,前記画像形成部材および前記金属ブロックは、外カバー部組として予め前記外カバーに一体化されていることを特徴とする請求項1〜3のいずれか1項に記載のプロジェクタ装置。   The projector according to claim 1, wherein the light source, the image forming member, and the metal block are integrated with the outer cover in advance as an outer cover set. 前記外カバーの内側に樹脂カバーが一体化され、前記光源,前記画像形成部材および前記金属ブロックを少なくとも含むプロジェクタモジュールが、前記樹脂カバーに固定されていることを特徴とする請求項4に記載のプロジェクタモジュール。   5. The projector module according to claim 4, wherein a resin cover is integrated inside the outer cover, and a projector module including at least the light source, the image forming member, and the metal block is fixed to the resin cover. Projector module.
JP2007090693A 2007-03-30 2007-03-30 Digital camera with built-in projector and projector device Expired - Fee Related JP5092497B2 (en)

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JP2007024939A (en) * 2005-07-12 2007-02-01 Olympus Corp Light source device, and projector
WO2007018217A1 (en) * 2005-08-11 2007-02-15 Nikon Corporation Auxiliary apparatus for projection apparatus, and projection system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004157567A (en) * 1997-02-13 2004-06-03 Seiko Epson Corp Optical unit and projection type display device
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