JP2010204611A

JP2010204611A - Projector

Info

Publication number: JP2010204611A
Application number: JP2009053224A
Authority: JP
Inventors: Keisuke Sakagami; 恵介坂上
Original assignee: Seiko Epson Corp
Current assignee: Seiko Epson Corp
Priority date: 2009-03-06
Filing date: 2009-03-06
Publication date: 2010-09-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector suppressing malfunction caused by noise of external light while enabling an operation in a specified place. <P>SOLUTION: The projector which receives an optical signal outputted from a remote control means and is operated on the basis of the received optical signal, is provided with: a photodetector 62 receiving the optical signal; an external housing 2 housing the photodetector 62 and having a light receiving opening 231 through which the optical signal passes; and a reflection member 5 reflecting the optical signal and guiding it to the photodetector 62 via the light receiving opening 231. The reflection member 5 is attached to the external housing 2 to be turnable around an orthogonal axis Ax orthogonal to an opening surface 2,311 of the light receiving opening 231. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、プロジェクターに関する。 The present invention relates to a projector.

従来、リモートコントローラー（以下、リモコンと記載）等の遠隔操作手段を操作することで出力される光信号（赤外線）を受光する受光素子を備えた赤外線通信装置が知られている（例えば、特許文献１参照）。
ここで、受光素子は、一般的に指向性を有しており、所定方向（受光方向）を中心として所定角度の範囲（以下、受光範囲）内から導入される光信号を受光することができる。
特許文献１に記載の赤外線通信装置によれば、外装筐体を構成するフロントケースの略中央部分には、可動自在に可動部が取り付けられ、この可動部には、受光素子を備えた受光部が設けられている。すなわち、可動部を動作させることで、リモコンから出力される光信号に対して受光部の向きを変更して、特定の場所での操作を可能にしている。 2. Description of the Related Art Conventionally, an infrared communication device including a light receiving element that receives an optical signal (infrared ray) output by operating a remote control means such as a remote controller (hereinafter referred to as a remote controller) is known (for example, Patent Documents). 1).
Here, the light receiving element generally has directivity and can receive an optical signal introduced from a predetermined angle range (hereinafter referred to as a light receiving range) with a predetermined direction (light receiving direction) as a center. .
According to the infrared communication device described in Patent Document 1, a movable portion is movably attached to a substantially central portion of the front case constituting the exterior housing, and the movable portion includes a light receiving portion including a light receiving element. Is provided. That is, by operating the movable part, the direction of the light receiving part is changed with respect to the optical signal output from the remote controller, thereby enabling operation at a specific place.

特開平１０−３２２２７３号公報Japanese Patent Laid-Open No. 10-32273

ところで、特許文献１に記載の赤外線通信装置では、受光素子が外光（例えば、蛍光灯）のノイズを受光してしまうおそれがある。そのため、この特許文献１に記載の赤外線通信装置が搭載されたプロジェクターでは、受光素子が外光のノイズを受光することとなり、プロジェクターが誤動作するという問題がある。 By the way, in the infrared communication apparatus described in Patent Document 1, the light receiving element may receive noise of external light (for example, a fluorescent lamp). For this reason, in the projector on which the infrared communication device described in Patent Document 1 is mounted, the light receiving element receives external noise, which causes a problem that the projector malfunctions.

本発明の目的は、特定の場所での操作を可能にしつつ、外光のノイズによる誤動作を抑制できるプロジェクターを提供することにある。 The objective of this invention is providing the projector which can suppress the malfunctioning by the noise of external light, enabling operation in a specific place.

本発明のプロジェクターは、遠隔操作手段から出力される光信号を受光し、受光した光信号に基づいて操作されるプロジェクターであって、前記光信号を受光する受光素子と、前記受光素子を収納し、前記光信号が通過する受光用開口部を有する外装筐体と、前記光信号を反射し前記受光用開口部を介して前記受光素子に導く反射部材とを備え、前記反射部材は、前記外装筐体に対して、前記受光用開口部の開口面に直交する直交軸を中心として回動可能に取り付けられていることを特徴とする。 The projector of the present invention is a projector that receives an optical signal output from a remote control means and is operated based on the received optical signal, and houses the light receiving element that receives the optical signal and the light receiving element. An exterior housing having a light receiving opening through which the optical signal passes, and a reflecting member that reflects the optical signal and guides the light signal to the light receiving element through the light receiving opening. It is attached to the housing so as to be rotatable about an orthogonal axis orthogonal to the opening surface of the light receiving opening.

本発明によれば、光信号を反射する反射部材は、直交軸を中心として回動可能に外装筐体に取り付けられている。例えば、遠隔操作手段の光信号の出力位置に対して、反射部材の反射面に向くように反射部材を回動させることで、光信号が受光用開口部を介して受光素子に対して良好に導くことができ、特定の場所での操作を可能にする。
さらに、反射部材は受光用開口部の外側に配設されて、受光用開口部の一部を覆っている。これによれば、反射部材の反射面とは反対側の面により、蛍光灯等の外光も反射するので、外光のノイズを遮蔽することができ、受光素子が外光のノイズを受光することによるプロジェクターの誤動作を抑制できる。 According to the present invention, the reflecting member that reflects the optical signal is attached to the exterior casing so as to be rotatable about the orthogonal axis. For example, by rotating the reflecting member so as to face the reflecting surface of the reflecting member with respect to the output position of the optical signal of the remote control means, the optical signal is favorably applied to the light receiving element through the light receiving opening. Can be guided and allows operation at a specific location.
Further, the reflecting member is disposed outside the light receiving opening and covers a part of the light receiving opening. According to this, external light such as a fluorescent lamp is also reflected by the surface opposite to the reflective surface of the reflecting member, so that external light noise can be shielded, and the light receiving element receives external light noise. The malfunction of the projector due to this can be suppressed.

本発明のプロジェクターでは、前記反射部材は、前記受光素子の配設位置を焦点位置とし、前記焦点位置を通る前記直交軸を中心として回転させた回転放物曲面状に形成され、前記光信号を反射して前記配設位置に集光させることが好ましい。
本発明によれば、反射部材は、受光素子の配設位置を焦点位置とし、焦点位置を通る直交軸を中心として回転させた回転放物曲面状に形成される。これによれば、カバー部材を回動させない場合において、カバー部材の内面に設けられる反射部材により、光信号を確実に受光素子の配設位置に集光することができる。
また、カバー部材を回動させた場合であっても、カバー部材の内面に設けられる反射部材により、光信号を確実に受光素子の配設位置に集光することができ、光信号を受光素子に対して良好に導くことができる。 In the projector according to the aspect of the invention, the reflecting member may be formed in a parabolic curved surface that is rotated about the orthogonal axis that passes through the focal position, with the light receiving element being disposed at the focal position. Preferably, the light is reflected and condensed at the arrangement position.
According to the present invention, the reflecting member is formed in the shape of a rotating paraboloid that is rotated about an orthogonal axis that passes through the focal position with the light receiving element disposed at the focal position. According to this, in the case where the cover member is not rotated, the optical signal can be reliably condensed at the position where the light receiving element is disposed by the reflecting member provided on the inner surface of the cover member.
Further, even when the cover member is rotated, the optical signal can be reliably condensed at the position where the light receiving element is disposed by the reflecting member provided on the inner surface of the cover member, and the optical signal is received by the light receiving element. Can be guided well.

本発明のプロジェクターでは、前記外装筐体には、前記受光用開口部を閉塞し、前記光信号を透過するカバー部材が取り付けられ、前記カバー部材は、前記外装筐体に対して、前記受光用開口部の開口面に直交する直交軸を中心として回動可能に取り付けられ、前記反射部材は、前記受光素子の配設位置を焦点位置とし、前記焦点位置を通る前記直交軸を中心として回転させた回転放物曲面状に形成され、前記光信号を反射して前記配設位置に集光させるとともに、前記カバー部材の内面に設けられていることが好ましい。 In the projector according to the aspect of the invention, a cover member that closes the light receiving opening and transmits the optical signal is attached to the exterior casing, and the cover member is configured to receive the light with respect to the exterior casing. The reflection member is attached so as to be rotatable about an orthogonal axis orthogonal to the opening surface of the opening, and the reflecting member is rotated about the orthogonal axis passing through the focal position with the light receiving element disposed at the focal position. Preferably, it is formed in the shape of a rotating paraboloid, is reflected on the optical signal to be condensed at the arrangement position, and is provided on the inner surface of the cover member.

本発明によれば、反射部材は、光信号を透過するカバー部材の内面に設けられている。例えば、カバー部材の外面に反射部材が取り付けられると、遠隔操作手段から出力される光信号がカバー部材を二回透過して、反射部材にて反射され、再度カバー部材を透過することとなる。すなわち、反射部材をカバー部材の外面に設けると、光信号が減衰し、受光素子が良好に光信号を受光できないおそれがある。これに対して、カバー部材の内面に反射部材が取り付けられる場合では、遠隔操作手段から出力される光信号がカバー部材を一回透過するのみで、反射部材で反射されることとなる。従って、反射部材をカバー部材の外面に取り付ける場合と比べると、光信号の減衰を抑制でき、受光素子は良好に光信号を受光することができる。
また、カバー部材は、回動可能に外装筐体に対して取り付けられ、反射部材は、カバー部材の内面に設けられているので、カバー部材を回動させることで、反射部材も回動することとなる。すなわち、カバー部材と反射部材とを一体にしたことで、カバー部材と反射部材とを別体にした場合と比べて、構造の簡素化を図れる。 According to the present invention, the reflecting member is provided on the inner surface of the cover member that transmits the optical signal. For example, when the reflection member is attached to the outer surface of the cover member, the optical signal output from the remote control means is transmitted twice through the cover member, reflected by the reflection member, and again transmitted through the cover member. That is, when the reflecting member is provided on the outer surface of the cover member, the optical signal is attenuated, and the light receiving element may not be able to receive the optical signal satisfactorily. On the other hand, when the reflection member is attached to the inner surface of the cover member, the optical signal output from the remote control means is transmitted through the cover member only once and reflected by the reflection member. Therefore, as compared with the case where the reflecting member is attached to the outer surface of the cover member, the attenuation of the optical signal can be suppressed, and the light receiving element can receive the optical signal satisfactorily.
Further, since the cover member is pivotally attached to the exterior housing, and the reflection member is provided on the inner surface of the cover member, the reflection member also rotates by rotating the cover member. It becomes. That is, by integrating the cover member and the reflection member, the structure can be simplified as compared with the case where the cover member and the reflection member are separated.

本発明のプロジェクターでは、前記カバー部材の内面は、前記受光素子の配設位置を焦点位置とし、前記焦点位置を通る前記直交軸を中心として回転させた回転放物曲面状に形成されていることが好ましい。
本発明によれば、カバー部材の内面は、受光素子を焦点位置として、当該焦点位置を通る直交軸を中心として回転させた回転放物曲面状に形成されている。これによれば、カバー部材の内面に対して、例えば、蒸着等によって、光信号を確実に受光素子の配設位置に集光する反射部材を容易に形成することができる。 In the projector according to the aspect of the invention, the inner surface of the cover member may be formed as a paraboloid curved surface that is rotated about the orthogonal axis that passes through the focal position, with the light receiving element disposed at the focal position. Is preferred.
According to the present invention, the inner surface of the cover member is formed in the shape of a rotating paraboloid which is rotated around an orthogonal axis passing through the focal position with the light receiving element as the focal position. According to this, it is possible to easily form a reflecting member that reliably collects an optical signal at the position where the light receiving element is disposed, for example, by vapor deposition or the like on the inner surface of the cover member.

前記カバー部材は、外面が所定位置を中心とする球面状に形成され、前記外装筐体に対して、前記所定位置を中心として回動可能に取り付けられていることが好ましい。
本発明によれば、カバー部材の外面が球面状であるので、カバー部材を所定位置を中心として複数方向に回動することができる。また、反射部材の回動方向の自由度を向上することができる。すなわち、種々の場所での操作を可能とすることができる。 It is preferable that the cover member is formed in a spherical shape whose outer surface is centered on a predetermined position, and is attached to the exterior housing so as to be rotatable about the predetermined position.
According to the present invention, since the outer surface of the cover member is spherical, the cover member can be rotated in a plurality of directions around a predetermined position. Moreover, the freedom degree of the rotation direction of a reflection member can be improved. That is, operations at various places can be made possible.

本発明の第１実施形態に係るプロジェクターを前面上方側から見た斜視図。FIG. 2 is a perspective view of the projector according to the first embodiment of the present invention viewed from the front upper side. 図１でのＩＩ−ＩＩ線断面図。II-II sectional view taken on the line in FIG. 前記実施形態における光信号及び外光の光路を示す模式図。The schematic diagram which shows the optical path of the optical signal and external light in the said embodiment. 本発明の第２実施形態に係るプロジェクターを前面上方側から見た斜視図。The perspective view which looked at the projector which concerns on 2nd Embodiment of this invention from the front upper side. 図４でのＶ−Ｖ線断面図。VV sectional view taken on the line in FIG. 本発明の第３実施形態に係るプロジェクターを前面上方側から見た斜視図。The perspective view which looked at the projector which concerns on 3rd Embodiment of this invention from the front upper side. 図６でのＶＩＩ−ＶＩＩ線断面図。VII-VII sectional view taken on the line in FIG.

［第１実施形態］
以下、本発明に係る第１実施形態を図面に基づいて説明する。
［プロジェクターの概略構成］
図１は、本発明に係るプロジェクター１を前面上方側から見た斜視図である。
図２は、図１のＩＩ−ＩＩ線断面図であり、本実施形態の要部を示す横断面図である。
なお、以下で記載する「前面」、「背面」は、図１における図面視において、前面および背面に相当するものである。 [First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment according to the invention will be described with reference to the drawings.
[Schematic configuration of projector]
FIG. 1 is a perspective view of a projector 1 according to the present invention as viewed from the upper front side.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 and is a cross-sectional view showing the main part of the present embodiment.
The “front surface” and “rear surface” described below correspond to the front surface and the back surface in the drawing view of FIG.

プロジェクター１は、画像情報に応じた画像を形成してスクリーン（図示略）上に投射レンズ３により投射する。また、プロジェクター１は、リモコンから出力される光信号を後述する受光装置６で受光して、この受光した光信号に基づいて操作される。このプロジェクター１は、図１に示すように、外装を構成する外装筐体２を備える。 The projector 1 forms an image corresponding to the image information and projects the image on a screen (not shown) by the projection lens 3. Further, the projector 1 receives an optical signal output from the remote controller by a light receiving device 6 described later, and is operated based on the received optical signal. As shown in FIG. 1, the projector 1 includes an exterior housing 2 that constitutes an exterior.

外装筐体２は、図１に示すように鉛直方向に交差する天面部２１及び底面部２２と、前面部２３と、背面部２４と、右側面部２５と、左側面部２６とを備え、略直方体形状を有する。そして、外装筐体２は、天面部２１を有するアッパーケース２Ａと、底面部２２を有するロアーケース２Ｂとで大略構成されている。
外装筐体２の前面部２３における右下位置、すなわちロアーケース２Ｂには、図１に示すように、膨出したカバー部材４が取り付けられている。また、カバー部材４の内面の一部には、図１（破線部分参照）及び図２に示すように、所定の範囲に反射部材５が設けられている。
なお、カバー部材４、反射部材５の構成についての詳細は、後述する。 As shown in FIG. 1, the exterior housing 2 includes a top surface portion 21 and a bottom surface portion 22 that intersect in the vertical direction, a front surface portion 23, a back surface portion 24, a right side surface portion 25, and a left side surface portion 26. Has a shape. The exterior housing 2 is roughly constituted by an upper case 2A having a top surface portion 21 and a lower case 2B having a bottom surface portion 22.
As shown in FIG. 1, a bulging cover member 4 is attached to the lower right position of the front surface portion 23 of the exterior housing 2, that is, the lower case 2 </ b> B. Further, as shown in FIG. 1 (see the broken line portion) and FIG. 2, a reflection member 5 is provided in a predetermined range on a part of the inner surface of the cover member 4.
The details of the configuration of the cover member 4 and the reflection member 5 will be described later.

ロアーケース２Ｂには、図１及び図２に示すように、略円形状の受光用開口部２３１が形成されている。この受光用開口部２３１の内部には、図２に示すように、遠隔操作手段としてのリモコン（図示略）から出力される光信号（赤外線信号）を受光する受光装置６が配設されている。
前面部２３の裏面には、受光用開口部２３１を囲うように、前面部２３側から見て略円形枠状に形成され、カバー部材４を支持する支持部２３２が形成されている。また、前面部２３の裏面には、図２に示すように、断面視略コ字型の取付部２３３が外装筐体２に対して、一体的に形成される。この取付部２３３には、受光装置６が取り付けられる。 As shown in FIGS. 1 and 2, a light receiving opening 231 having a substantially circular shape is formed in the lower case 2B. As shown in FIG. 2, a light receiving device 6 for receiving an optical signal (infrared signal) output from a remote controller (not shown) as remote control means is disposed inside the light receiving opening 231. .
A support portion 232 that supports the cover member 4 is formed on the back surface of the front surface portion 23 so as to surround the light receiving opening 231 and is formed in a substantially circular frame shape when viewed from the front surface portion 23 side. Further, as shown in FIG. 2, a mounting portion 233 having a substantially U-shaped sectional view is formed integrally with the exterior housing 2 on the back surface of the front surface portion 23. The light receiving device 6 is attached to the attachment portion 233.

受光装置６は、図２に示すように、基板６１と、受光素子６２とで概略構成される。
基板６１は、ケーブル（図示略）によって制御装置（図示略）と電気的に接続され、受光素子６２から発せられた信号をケーブルを通して制御装置に送信する。この基板６１は、取付部２３３に天面部２１側から取り付けられて、ロアーケース２Ｂに固定される。
受光素子６２は、基板６１に半田付け等によって取り付けられ、リモコンから出力される光信号を受光するものであり、図２に示すように、カバー部材４の焦点位置Ｏ_１に配設される。 As shown in FIG. 2, the light receiving device 6 is roughly configured by a substrate 61 and a light receiving element 62.
The board 61 is electrically connected to a control device (not shown) by a cable (not shown), and transmits a signal emitted from the light receiving element 62 to the control device through the cable. The substrate 61 is attached to the attachment portion 233 from the top surface portion 21 side, and is fixed to the lower case 2B.
The light receiving element 62 is attached to the substrate 61 by soldering or the like, and receives an optical signal output from the remote controller, and is disposed at a focal position O ₁ of the cover member 4 as shown in FIG.

［カバー部材の構成］
カバー部材４は、図２に示すように、透光性材料で形成され、前面部２３に形成された略円形状の受光用開口部２３１を閉塞するように取り付けられている。
カバー部材４は、図２に示すように、ドーム部４１と、つば部４２とを備える。 [Composition of cover member]
As shown in FIG. 2, the cover member 4 is made of a light-transmitting material and is attached so as to close a substantially circular light receiving opening 231 formed in the front surface portion 23.
As shown in FIG. 2, the cover member 4 includes a dome portion 41 and a collar portion 42.

ドーム部４１は、外方へ向けて膨出し、光信号を透過させる部分である。このドーム部４１の内面は、焦点位置Ｏ_１を通り開口面２３１１に直交する直交軸Ａｘを中心として回転させた回転放物曲面状に形成されている。また、ドーム部４１の外面も内面と同様に形成され、ドーム部４１は、略均一な肉厚で形成されている。
つば部４２は、ドーム部４１の周端部分から外方へ向けて延出し、前面部２３側から見て略円形状に形成されている。そして、つば部４２は、直交軸Ａｘを中心として回動可能となるように支持部２３２に支持される。 The dome portion 41 is a portion that bulges outward and transmits an optical signal. The inner surface of the dome portion 41 is formed in a paraboloid curved surface that is rotated around an orthogonal axis Ax that passes through the focal position O ₁ and is orthogonal to the opening surface 2311. The outer surface of the dome portion 41 is also formed in the same manner as the inner surface, and the dome portion 41 is formed with a substantially uniform thickness.
The collar portion 42 extends outward from the peripheral end portion of the dome portion 41 and is formed in a substantially circular shape when viewed from the front surface portion 23 side. The collar portion 42 is supported by the support portion 232 so as to be rotatable about the orthogonal axis Ax.

［反射部材の構成］
反射部材５は、ドーム部４１の内面に沿って蒸着形成され、または接着剤等で取り付けられている。この反射部材５は、ドーム部４１を透過し、カバー部材４の内部に導入された光信号を受光装置６へ向けて反射する。さらに、反射部材５は、蛍光灯等の外光のノイズを反射することで、受光装置６へ向う外光を遮蔽する。
本実施形態では、ドーム部４１の内面には、反射部材５がドーム部４１の略半分を覆う範囲に取り付けられている。なお、反射部材５がカバー部材４の内面に取り付けられる範囲は、光信号を反射する範囲、及び外光等のノイズを遮蔽する範囲に応じて、適宜決められる。 [Structure of reflecting member]
The reflection member 5 is formed by vapor deposition along the inner surface of the dome portion 41 or attached with an adhesive or the like. The reflecting member 5 transmits the dome portion 41 and reflects the optical signal introduced into the cover member 4 toward the light receiving device 6. Further, the reflection member 5 shields external light toward the light receiving device 6 by reflecting external light noise such as a fluorescent lamp.
In the present embodiment, the reflection member 5 is attached to the inner surface of the dome portion 41 in a range that covers substantially half of the dome portion 41. The range in which the reflecting member 5 is attached to the inner surface of the cover member 4 is appropriately determined according to the range in which the optical signal is reflected and the range in which noise such as outside light is shielded.

［光信号及び外光の光路］
図３は、反射部材５で反射される光信号及び蛍光灯等の外光の光路を模式的に示す図である。
リモコンから出力される光信号は、図３に示すように、光束Ｌ１として、カバー部材４を透過して、カバー部材４内に侵入する。そして、光束Ｌ１は、反射部材５にて反射され、焦点位置Ｏ_１に配設される受光素子６２に集光する。
また、蛍光灯等の外光から出力される光束Ｌ２は、カバー部材４を透過するが、図３に示すように、反射部材５で反射され、カバー部材４内には侵入することがない。 [Optical signal and external light path]
FIG. 3 is a diagram schematically showing the optical signal reflected by the reflecting member 5 and the optical path of external light such as a fluorescent lamp.
As shown in FIG. 3, the optical signal output from the remote controller passes through the cover member 4 and enters the cover member 4 as a light beam L1. The light beam L1 is reflected by the reflecting member 5 is condensed to the light receiving element 62 disposed at a focal position O _1.
Further, the light beam L2 output from outside light such as a fluorescent lamp passes through the cover member 4, but is reflected by the reflecting member 5 and does not enter the cover member 4 as shown in FIG.

［カバー部材の回動操作］
次に、カバー部材４の回動操作について説明する。
リモコンの操作位置に応じて、カバー部材４のドーム部４１を把持して、直交軸Ａｘを図２に示す矢印Ａの方向に回動させる。すなわち、光信号の出力位置に対して、反射部材５に向くように、カバー部材４を回動させる。これにより、光信号はカバー部材４を透過し、カバー部材４内に侵入した光信号は反射部材５にて反射されて、焦点位置Ｏ_１に集光することとなる。 [Rotating cover member]
Next, the rotation operation of the cover member 4 will be described.
In accordance with the operation position of the remote controller, the dome portion 41 of the cover member 4 is gripped and the orthogonal axis Ax is rotated in the direction of the arrow A shown in FIG. That is, the cover member 4 is rotated so as to face the reflecting member 5 with respect to the output position of the optical signal. As a result, the optical signal is transmitted through the cover member 4, and the optical signal that has entered the cover member 4 is reflected by the reflecting member 5 and collected at the focal position O ₁ .

上述した第１実施形態によれば、以下の効果がある。
（１）光信号を反射する反射部材５は、直交軸Ａｘを中心として回動可能に外装筐体２に取り付けられている。例えば、遠隔操作手段の光信号の出力位置に対して、反射部材５の反射面に向くように反射部材５を回動させることで、光信号が受光用開口部２３１を介して受光素子６２に対して良好に導くことができ、特定の場所での操作を可能にする。さらに、反射部材５は受光用開口部２３１の外側に配設されて、受光用開口部２３１の一部を覆っている。すなわち、反射部材５の外面により、蛍光灯等の外光も反射するので、外光のノイズを遮蔽することができ、受光素子６２が外光のノイズを受光することによるプロジェクター１の誤動作を抑制できる。 The first embodiment described above has the following effects.
(1) The reflecting member 5 that reflects an optical signal is attached to the exterior housing 2 so as to be rotatable about an orthogonal axis Ax. For example, by rotating the reflecting member 5 so as to face the reflecting surface of the reflecting member 5 with respect to the optical signal output position of the remote control means, the optical signal is transmitted to the light receiving element 62 through the light receiving opening 231. Therefore, it can be guided well and can be operated at a specific place. Further, the reflecting member 5 is disposed outside the light receiving opening 231 and covers a part of the light receiving opening 231. That is, since the external surface of the reflecting member 5 also reflects external light such as a fluorescent lamp, external light noise can be shielded, and malfunction of the projector 1 due to the light receiving element 62 receiving external light noise is suppressed. it can.

（２）プロジェクター１を天井等から吊り下げて（以下、天吊り）設置する場合には、特に、受光装置６が蛍光灯等の外光に近づくため、反射部材５をカバー部材４の上方側を覆うように配置させることで、受光装置６に向う外光を遮蔽することができる。この際、下方からリモコン等により出力される光信号がカバー部材４を透過して、反射部材５により反射されて、受光装置６へ良好に導かれる。 (2) When installing the projector 1 by suspending it from the ceiling or the like (hereinafter “ceiling”), the light receiving device 6 approaches the outside light such as a fluorescent lamp. By arranging so as to cover the outside light, it is possible to block outside light toward the light receiving device 6. At this time, an optical signal output from below by a remote controller or the like is transmitted through the cover member 4, reflected by the reflecting member 5, and guided well to the light receiving device 6.

（３）反射部材５は、受光素子６２の配設位置を焦点位置Ｏ_１とし、焦点位置Ｏ_１を通る直交軸Ａｘを中心として回転させた回転放物曲面状に形成される。これによれば、カバー部材４を回動させない場合において、カバー部材４の内面に設けられる反射部材５により、光信号を確実に受光素子６２の配設位置に集光することができる。また、カバー部材４を回動させた場合であっても、カバー部材４の内面に設けられる反射部材５により、光信号を確実に受光素子６２の配設位置に集光することができ、光信号を受光素子６２に対して良好に導くことができる。 (3) The reflecting member 5 is formed in a paraboloid curved surface that is rotated about an orthogonal axis Ax that passes through the focal position O ₁ with the light receiving element 62 disposed at the focal position O ₁ . According to this, when the cover member 4 is not rotated, the reflection signal 5 provided on the inner surface of the cover member 4 can reliably collect the optical signal at the position where the light receiving element 62 is disposed. Even when the cover member 4 is rotated, the reflecting member 5 provided on the inner surface of the cover member 4 can reliably collect the optical signal at the position where the light receiving element 62 is disposed. The signal can be guided well to the light receiving element 62.

（４）反射部材５は、光信号を透過するカバー部材４の内面に設けられている。例えば、カバー部材４の外面に反射部材５が取り付けられると、リモコン等から出力される光信号がカバー部材４を二回透過して、反射部材５にて反射され、再度カバー部材４を透過することとなる。すなわち、反射部材５をカバー部材４の外面に設けると、光信号が減衰し、受光素子６２が良好に光信号を受光できないおそれがある。これに対して、カバー部材４の内面に反射部材５が取り付けられる場合では、リモコン等から出力される光信号がカバー部材４を一回透過するのみで、反射部材５で反射されることとなる。従って、反射部材５をカバー部材４の外面に取り付ける場合と比べると、光信号の減衰を抑制でき、受光素子６２は良好に光信号を受光することができる。 (4) The reflection member 5 is provided on the inner surface of the cover member 4 that transmits an optical signal. For example, when the reflecting member 5 is attached to the outer surface of the cover member 4, an optical signal output from the remote controller or the like is transmitted through the cover member 4 twice, reflected by the reflecting member 5, and again transmitted through the cover member 4. It will be. That is, if the reflecting member 5 is provided on the outer surface of the cover member 4, the optical signal is attenuated, and the light receiving element 62 may not be able to receive the optical signal satisfactorily. On the other hand, when the reflection member 5 is attached to the inner surface of the cover member 4, the optical signal output from the remote controller or the like is transmitted through the cover member 4 only once and reflected by the reflection member 5. . Therefore, compared with the case where the reflecting member 5 is attached to the outer surface of the cover member 4, the attenuation of the optical signal can be suppressed, and the light receiving element 62 can receive the optical signal satisfactorily.

（５）カバー部材４は、回動可能に外装筐体２に対して取り付けられ、反射部材５は、カバー部材４の内面に設けられているので、カバー部材４を回動させることで、反射部材５も回動することとなる。すなわち、カバー部材４と反射部材５とを一体にしたことで、カバー部材４と反射部材５とを別体にした場合と比べて、構造の簡素化を図れる。 (5) The cover member 4 is rotatably attached to the exterior housing 2, and the reflection member 5 is provided on the inner surface of the cover member 4. The member 5 will also rotate. That is, since the cover member 4 and the reflection member 5 are integrated, the structure can be simplified as compared with the case where the cover member 4 and the reflection member 5 are separated.

（６）カバー部材４の内面は、受光素子６２を焦点位置Ｏ_１として、当該焦点位置Ｏ_１を通る直交軸Ａｘを中心として回転させた回転放物曲面状に形成されている。これによれば、カバー部材４の内面に対して、蒸着等によって、光信号を確実に受光素子６２の配設位置に集光する反射部材５を容易に形成することができる。 (6) The inner surface of the cover member 4 is formed in a paraboloid curved surface that is rotated around the orthogonal axis Ax that passes through the focal position O ₁ with the light receiving element 62 as the focal position O ₁ . According to this, it is possible to easily form the reflection member 5 that reliably collects the optical signal at the position where the light receiving element 62 is disposed on the inner surface of the cover member 4 by vapor deposition or the like.

［第２実施形態］
図４は、本発明の第２実施形態に係るプロジェクター１を前面上方側から見た斜視図である。
図５は、図４でのＶ−Ｖ線断面図であり、本実施形態の要部を示す横断面図である。
図の説明にあたって、前記第１実施形態と同一構成要素については、同一符号を付し、その説明を省略する。
前記第１実施形態では、カバー部材４は、放物曲面状に形成したが、本実施形態では、図４及び図５に示すように、カバー部材４を球面状に形成している。 [Second Embodiment]
FIG. 4 is a perspective view of the projector 1 according to the second embodiment of the present invention as viewed from the front upper side.
FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4 and is a cross-sectional view showing the main part of the present embodiment.
In the description of the drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the first embodiment, the cover member 4 is formed in a parabolic curved shape. However, in the present embodiment, as shown in FIGS. 4 and 5, the cover member 4 is formed in a spherical shape.

カバー部材４は、図４に示すように、外面が球面状に形成され、より具体的には、図５に示すように、一部が切り欠かれた球面状に形成されている。カバー部材４の内面についても、外面と同様に形成され、カバー部材４は、略均一な肉厚で形成されている。このカバー部材４は、受光用開口部２３１を閉塞するように、支持部２３４を介して、ロアーケース２Ｂの前面部２３に取り付けられる。
前面部２３の裏面には、図５に示すように、カバー部材４を支持する支持部２３４が設けられている。支持部２３４は、カバー部材４と接触する部分がカバー部材４に対応して球面状に形成され、受光用開口部２３１を囲うように、前面部２３側から見て略円形枠状に形成されている。これにより、カバー部材４が所定位置としての中心位置Ｏ_２を中心として回動可能に、支持部２３４に支持される。 As shown in FIG. 4, the cover member 4 has an outer surface formed in a spherical shape, and more specifically, as shown in FIG. 5, a part of the cover member 4 is formed in a spherical shape. The inner surface of the cover member 4 is also formed in the same manner as the outer surface, and the cover member 4 is formed with a substantially uniform thickness. The cover member 4 is attached to the front surface portion 23 of the lower case 2B via the support portion 234 so as to close the light receiving opening 231.
As shown in FIG. 5, a support portion 234 that supports the cover member 4 is provided on the back surface of the front surface portion 23. The support portion 234 is formed in a spherical shape corresponding to the cover member 4 in contact with the cover member 4, and is formed in a substantially circular frame shape when viewed from the front surface portion 23 side so as to surround the light receiving opening 231. ing. As a result, the cover member 4 is supported by the support portion 234 so as to be rotatable about a center position O ₂ as a predetermined position.

上述した第２実施形態によれば、前記第１実施形態の効果に加え、以下の効果がある。
本実施形態では、カバー部材４の外面が球面状であるので、カバー部材４を中心位置Ｏ_２を中心として複数方向に回動することができる。また、反射部材５の回動方向の自由度を向上することができる。すなわち、種々の場所での操作を可能とすることができる。 According to the second embodiment described above, in addition to the effects of the first embodiment, there are the following effects.
In the present embodiment, since the outer surface of the cover member 4 is spherical, it can rotate in multiple directions around the center position O ₂ of the cover member 4. Moreover, the freedom degree of the rotation direction of the reflection member 5 can be improved. That is, operations at various places can be made possible.

［第３実施形態］
図６は、本発明の第３実施形態に係るプロジェクター１を前面上方側から見た斜視図である。
図７は、図６でのＶＩＩ−ＶＩＩ線断面図であり、本実施形態の要部を示す横断面図である。
図の説明にあたって、前記第１実施形態と同一構成要素については、同一符号を付し、その説明を省略する。
前記第１実施形態では、カバー部材４と反射部材５とは一体に形成されたが、本実施形態では、図７に示すように、カバー部材４と反射部材５とは別体に構成されている。 [Third Embodiment]
FIG. 6 is a perspective view of the projector 1 according to the third embodiment of the present invention as viewed from the front upper side.
FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6 and is a cross-sectional view showing a main part of the present embodiment.
In the description of the drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the first embodiment, the cover member 4 and the reflection member 5 are integrally formed. However, in this embodiment, the cover member 4 and the reflection member 5 are configured separately as shown in FIG. Yes.

カバー部材４は、前記第１実施形態でのカバー部材４と同様の材質、形状であるが、このカバー部材４には、頂点位置に挿通孔４３が形成され、支持部２３２にて固定されている。 The cover member 4 has the same material and shape as the cover member 4 in the first embodiment, but the cover member 4 is formed with an insertion hole 43 at the apex position and is fixed by the support portion 232. Yes.

反射部材５は、図５に示すように、摘み部５１と、ストッパ部５２と、曲面部５３とを備え、カバー部材４の内面側に配設されている。
摘み部５１は、挿通孔４３に挿通され、外部に突出している。突出した摘み部５１を把持して、反射部材５を回動させることにより、反射部材５の位置を光信号の出力位置に対して、反射部材５に向くようにすることができる。
ストッパ部５２は、反射部材５をカバー部材４内に落とし込まないように、カバー部材４の外面にて反射部材５を支持する部分である。
曲面部５３は、焦点位置Ｏ_１を通り開口面２３１１に直交する直交軸Ａｘを中心として回転させた回転放物曲面状に形成され、リモコン等から出力される光信号及び蛍光灯等の外光を反射する部分である。 As shown in FIG. 5, the reflection member 5 includes a knob portion 51, a stopper portion 52, and a curved surface portion 53, and is disposed on the inner surface side of the cover member 4.
The knob 51 is inserted through the insertion hole 43 and protrudes to the outside. By gripping the protruding knob 51 and rotating the reflecting member 5, the position of the reflecting member 5 can be made to face the reflecting member 5 with respect to the output position of the optical signal.
The stopper portion 52 is a portion that supports the reflecting member 5 on the outer surface of the cover member 4 so as not to drop the reflecting member 5 into the cover member 4.
The curved surface portion 53 is formed as a paraboloid curved surface that is rotated around an orthogonal axis Ax that passes through the focal position O ₁ and is orthogonal to the opening surface 2311, and is an optical signal output from a remote controller or the like and external light such as a fluorescent lamp. It is a part that reflects.

上述した第３実施形態によれば、前記第１実施形態の（１）〜（４）と同様の効果を奏する。 According to 3rd Embodiment mentioned above, there exists an effect similar to (1)-(4) of the said 1st Embodiment.

［実施形態の変形］
なお、本発明は前述の実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
前記各実施形態では、反射部材５は、カバー部材４に取り付けられて、カバー部材４とともに回動可能に設けられていたが、カバー部材４を設けずに、反射部材５のみの構成としてもよい。
また、前記第１，２実施形態では、反射部材５がカバー部材４の内面に取り付けられていたが、外面に取り付けられてもよい。 [Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In each said embodiment, although the reflection member 5 was attached to the cover member 4 and was provided rotatably with the cover member 4, it is good also as a structure only of the reflection member 5 without providing the cover member 4. FIG. .
In the first and second embodiments, the reflecting member 5 is attached to the inner surface of the cover member 4, but may be attached to the outer surface.

前記第１，３実施形態では、カバー部材４の内面及び外面が放物曲面状に形成されたが、内面が放物曲面状に形成されていればよく、外面が放物曲面状に形成されていなくてもよい。
前記第２実施形態では、カバー部材４の内面及び外面が球面状に形成されたが、外面が球面状に形成されていればよく、内面が球面状に形成されていなくてもよい。
前記各実施形態では、カバー部材４は、ロアーケース２Ｂの前面部２３に取り付けられていたが、これに限定されず、外装筐体２の任意の位置に取り付けられてもよい。 In the first and third embodiments, the inner surface and the outer surface of the cover member 4 are formed in a parabolic curved surface. However, the inner surface only needs to be formed in a parabolic curved surface, and the outer surface is formed in a parabolic curved surface. It does not have to be.
In the second embodiment, the inner surface and the outer surface of the cover member 4 are formed in a spherical shape. However, the outer surface may be formed in a spherical shape, and the inner surface may not be formed in a spherical shape.
In each said embodiment, although the cover member 4 was attached to the front-surface part 23 of the lower case 2B, it is not limited to this, You may attach to the arbitrary positions of the exterior housing | casing 2. FIG.

本発明は、プレゼンテーションやホームシアターに用いられるプロジェクターに利用できる。 The present invention can be used for projectors used in presentations and home theaters.

１…プロジェクター、２…外装筐体、４…カバー部材、５…反射部材、６２…受光素子、２３１…受光用開口部、２３１１…開口面、Ａｘ…直交軸、Ｏ_１…焦点位置、Ｏ_２…中心位置（所定位置）。 1 ... Projector, 2 ... exterior housing, 4 ... cover member, 5 ... reflecting member 62 ... light-receiving element, 231 ... receiving opening, 2311 ... open face, Ax ... orthogonal axes, O 1 _... focal position, _{O 2} ... Center position (predetermined position).

Claims

A projector that receives an optical signal output from a remote control means and is operated based on the received optical signal,
A light receiving element for receiving the optical signal;
An exterior housing that houses the light receiving element and has a light receiving opening through which the optical signal passes;
A reflective member that reflects the optical signal and guides it to the light receiving element through the light receiving opening,
The reflective member is
A projector, wherein the projector is attached to the exterior housing so as to be rotatable about an orthogonal axis orthogonal to the opening surface of the light receiving opening.

The projector according to claim 1.
The reflective member is
The light receiving element is disposed at a focal position, and is formed into a paraboloid curved surface rotated about the orthogonal axis passing through the focal position, and reflects the optical signal to be condensed at the disposed position. A projector characterized by that.

The projector according to claim 1 or 2,
In the outer casing,
A cover member that closes the light receiving opening and transmits the optical signal is attached,
The cover member is
It is attached to the exterior housing so as to be rotatable about an orthogonal axis orthogonal to the opening surface of the light receiving opening,
The reflective member is
A projector provided on an inner surface of the cover member.

The projector according to claim 3.
The inner surface of the cover member is
The projector is characterized in that it is formed in a paraboloid curved surface that is rotated about the orthogonal axis that passes through the focal position, with the arrangement position of the light receiving element as a focal position.

The projector according to claim 3.
The cover member is
A projector, wherein an outer surface is formed in a spherical shape centered on a predetermined position, and is attached to the exterior housing so as to be rotatable about the predetermined position.