JP2009278164A - Infrared transmission system - Google Patents

Abstract

An infrared transmission device for reliably receiving infrared rays emitted from a remote controller at a light receiving portion of an electric device to be operated is received. The infrared rays for operating a television 3 emitted from a remote controller are received. An optical fiber cable 30 for transmitting the infrared light 100, the light receiving part 10 being provided at one end and the light emitting part 20 for emitting the infrared light 100 received from the light receiving part 10 to the television 3 at the other end; By using the infrared transmission device 1 having the above, the infrared ray 100 emitted from the remote controller 2 can be reliably received by the light receiving unit of the television 3.
[Selection] Figure 1

Description

  The present invention relates to an infrared transmission device that can remotely control electrical equipment such as home appliances using infrared rays.

  Remote control devices that can be operated from a remote location for many electrical devices such as televisions, VCRs, audio and other video / audio equipment, air conditioners such as air conditioners and fans, and lighting equipment such as fluorescent lamps. (Hereinafter, simply referred to as “remote control”) can be remotely operated.

  The above-described remote control is mainly of a type that transmits directional infrared light and receives the infrared light at a light receiving unit on the electric device side. For this reason, when operating using the remote controller, it is necessary to direct the light emitting unit of the remote controller to the direction of the electric device to be operated to some extent. Here, when there is an obstacle between the remote controller and the electric device to be operated, the infrared rays emitted from the remote controller may be blocked by the obstacle and the remote controller operation may not be performed successfully.

  Therefore, Patent Document 1 discloses an infrared light emitting device in which a reflecting mirror that reflects infrared rays emitted from a remote controller is installed on the ceiling surface, and the infrared rays are diffused throughout the room via the reflecting mirror.

JP 2007-208981 A

  However, in the invention disclosed in Patent Document 1, the infrared light reflected by the reflecting mirror part may be blocked by an obstacle placed in the vicinity of the light receiving part of the electric device to be operated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an infrared transmission device that reliably receives infrared rays emitted from a remote controller at a light receiving unit of an electric device to be operated.

Means and effects for solving the problems

  In order to achieve the above object, the infrared transmission device according to the present invention has several features as follows. That is, the infrared transmission device of the present invention includes the following features alone or in combination.

  In order to achieve the above object, an infrared transmission device according to the present invention is provided with a light receiving unit for receiving infrared rays for operating an electrical device emitted from a remote control device, a light receiving unit at one end, and a light receiving unit at the other end. And a transmission path for transmitting infrared light, which is provided with a light output portion for outputting the infrared light received from the electronic device to the electrical device.

  According to said structure, the light-receiving part of an infrared transmission device once receives the infrared rays emitted from the remote control device in order to operate the electric equipment, and emits the infrared rays again from the light-emitting part via the transmission path. Can do. As a result, even if there is an obstacle between the remote control device and the light receiving part of the electric device to be operated, the light emitting part of the infrared transmission device is installed in the light receiving part of the electric device to ensure remote control. Infrared light emitted from the device can be received by the light receiving unit of the electric device.

  In the infrared transmission device according to the present invention, the transmission path may be an optical fiber cable.

  According to the above configuration, it is not necessary to convert the received infrared ray into an electric signal or the like in order to transmit the infrared ray received by the light receiving unit of the infrared transmission device, and the received infrared ray can be directly received by the light receiving unit of the electric device to be operated. it can. Furthermore, since a desired length can be selected and bending can be performed flexibly, the degree of freedom in installing the infrared transmission device is improved.

  The infrared transmission device according to the present invention may have a concave curved surface that reflects infrared rays emitted from a remote control device and directs the direction of infrared rays toward a connection portion between the light receiving portion and the transmission path.

  According to said structure, the infrared rays can be made to face the connection part of the light-receiving part of an infrared rays transmission apparatus and a transmission path by reflecting the infrared rays emitted from the remote control apparatus with a concave curved surface. As a result, even when infrared rays are radiated to a position away from the connection portion between the light receiving unit and the transmission path, reflection of the concave curved surface can easily collect the infrared rays toward the transmission path, and the light receiving range of the light receiving unit. Spread.

  In the infrared transmission device according to the present invention, the light receiving unit may be attached to the ceiling surface such that a concave curved surface faces the ceiling surface.

  According to the above configuration, even when the infrared light emitted from the remote control device is irradiated to a position away from the light receiving unit, the infrared light is reflected toward the ceiling surface, and the infrared light is collected toward the transmission path. Can be lighted.

  In the infrared transmission device according to the present invention, the transmission path may be installed along the wall surface.

  According to the above configuration, even when a transmission line having a long length is used, it is not disturbed because it is installed along the wall surface, and an operator of the remote controller does not get caught in the transmission line.

  An embodiment of the present invention will be described below with reference to FIGS.

(Outline of use of infrared transmission device 1)
FIG. 1 is an overall view of a room where an infrared transmission device 1 of the present invention is installed. The room has a ceiling surface 200, a wall surface 300, and a floor surface 400, and a television 3 that can be remotely controlled by the remote controller 2 for channel switching is disposed on the stand 500 near the wall surface 300. . The light receiving unit 10 of the infrared transmission device 1 is installed on the ceiling surface 200. The light receiving unit 10 has a function of receiving infrared rays 100 that operate the television 3 emitted from the remote controller 2. On the other hand, a light output unit 20 of the infrared transmission device 1 is installed in a light receiving unit (not shown) of the television 3. The light emitting unit 20 has a role of emitting the infrared ray 100 received by the light receiving unit 10 to the light receiving unit of the television 3. An optical fiber cable 30 is provided with the light receiving unit 10 of the infrared transmission device 1 as one end and the light output unit 20 as the other end, and the optical fiber cable 30 is installed along the wall surface 300. The optical fiber cable 30 has a role of transmitting the infrared ray 100 received from the light receiving unit 10 to the light emitting unit 20. In addition, since the optical fiber cable 30 can select a desired length and can be bent flexibly, the light output unit 20 can be installed not only in the television 3 but also in a light receiving unit of an electric device that is a desired operation target. Is possible.

  By using the infrared transmission device 1 installed in the room as described above, the light receiving unit 10 of the infrared transmission device 1 once receives the infrared ray 100 emitted from the remote controller 2 to operate the television 3, and the optical fiber cable. The infrared ray 100 can be emitted again from the light emitting unit 20 via 30. Thereby, even when there is an obstacle between the remote controller 2 and the light receiving unit of the television 3 to be operated, the remote control unit can be reliably installed by installing the light emitting unit 20 of the infrared transmission device 1 in the light receiving unit of the television 3. 2 can be received by the light receiving unit of the television 3.

(Configuration of infrared transmission device 1)
FIG. 2 is a configuration diagram of the infrared transmission device 1. As described above, the infrared transmission device 1 has a configuration in which the light receiving unit 10 and the light emitting unit 20 are connected by the optical fiber cable 30.

  As shown in FIG. 2, the light receiving unit 10 includes a light collecting unit 11, a light receiving side connecting unit 12, and a light receiving side attaching unit 13.

  The condensing unit 11 serving as the base of the light receiving unit 10 has a diameter that gradually decreases from the light receiving side attachment unit 13 side positioned above the light receiving unit 10 to the light receiving side coupling unit 12 side positioned below. The concave curved surface is formed in a shape that is continuous in the circumferential direction. That is, the condensing part 11 is formed in the bowl shape by which an upper part becomes an opening surface by the concave curved surface. Moreover, a hole (not shown) for allowing the received infrared ray 100 to pass therethrough is formed at the bottom of the condensing unit 11 formed in a bowl shape. Here, the “bottom part of the light collecting part 11” is a part opposite to the opening surface of the light collecting part 11, and is the bottom of the so-called bowl-shaped light collecting part 11. Such a condensing part 11 has a role which makes the direction of the infrared rays 100 emitted from the remote control 2 face the light receiving side connecting part 12 described later by using a concave curved surface. Details will be described with reference to FIG.

  The light receiving side connecting portion 12 located at the lower part of the light receiving portion 10 is formed in a columnar shape and is provided at the bottom of the light collecting portion 11. Note that a hole (not shown) having the same diameter as the hole formed in the bottom of the light collecting part 11 is also formed in the light receiving side connecting part 12 and communicates with an optical fiber cable 30 described later. The light receiving part 10 and the optical fiber cable 30 are connected by the light receiving side connecting part 12.

  The light receiving side mounting portion 13 located on the upper portion of the light receiving portion 10 is formed in a band shape and is provided on a part of the upper edge of the light collecting portion 11. Specifically, the other end 13b is supported by the light collecting unit 11 with a part of the upper edge of the light collecting unit 11 as a fulcrum so that the one end 13a of the light receiving side attachment unit 13 is located above the light collecting unit 11. Has been. Further, a light receiving side adhesive portion 14 is provided at one end 13 a of the light receiving side attachment portion 13. The light-receiving side adhesive portion 14 has a role of installing the light-receiving portion 10 on the ceiling surface 200 or the like with a double-sided tape (not shown). In addition, the light receiving side mounting portion 13 is configured so that a gap is formed between the light collecting portion 11 and the ceiling surface 200 when the light receiving portion 10 is installed on the ceiling surface 200 or the like by bonding the light receiving side adhesive portion 14. The condensing part 11 is curved from one end 13a to the other end 13b.

  On the other hand, as shown in FIG. 2, the light exit part 20 includes a light leakage prevention part 21, a light exit side connection part 22, and a light exit side attachment part 23.

  The light leakage prevention unit 21 is formed in a bowl shape with a concave curved surface, like the light collecting unit 11, with the lower part being an opening surface. In addition, a hole (not shown) for allowing the infrared ray 100 transmitted through the optical fiber cable 30 to pass therethrough is formed at the bottom of the light leakage prevention unit 21 formed in a bowl shape. Here, the “bottom part of the light leakage prevention part 21” is the bottom of the so-called bowl-shaped light leakage prevention part 21, which is a part opposite to the opening surface of the light leakage prevention part 21. Such a light leakage prevention unit 21 has a role of using the concave curved surface to direct the direction of the infrared ray 100 transmitted through the optical fiber cable 30 to the light receiving unit of the electric device such as the television 3. Yes. Details will be described with reference to FIG.

  The light output side connecting portion 22 is formed in a cylindrical shape like the light receiving side connecting portion 12, and is provided at the bottom of the light leakage preventing portion 21. Note that a hole (not shown) having the same diameter as the hole formed in the bottom of the light leakage prevention unit 21 is also formed in the light output side coupling unit 22 and communicated from the optical fiber cable 30. The light output part 20 and the optical fiber cable 30 are connected by the light output side connecting part 22.

  The light emission side attachment portion 23 is formed in a band shape like the light reception side attachment portion 13, and the light emission side attachment portion 23 is provided with a light leakage prevention function in the same manner as the light reception side attachment portion 13 is provided in the light collecting portion 11. The unit 21 is provided. Moreover, the light emission side attachment part 23 has the light emission side adhesion part 24 in the one end 23a, and has a role which installs the light emission part 20 in electric equipments, such as the television 3, with a double-sided tape (not shown). Yes.

(Configuration of optical fiber cable 30)
The optical fiber cable 30 provided between the light receiving unit 10 and the light emitting unit 20 has a configuration as shown in FIG.

  As shown in FIG. 3, the optical fiber cable 30 has a shape in which a core 31 and a clad 34 including two stress applying portions 32 and 33 are covered with a protective material 35. Specifically, the stress applying portions 32 and 33 are embedded in the clad 34 with a predetermined distance therebetween symmetrically about the core 31.

  The core 31 is formed in the center of the cross section of the optical fiber cable 30 along the axial direction, and is an area where light such as infrared rays 100 can be transmitted.

  The stress applying portions 32 and 33 make it easy to transmit light to the core 31 by controlling the stress balance in the cross-sectional direction of the optical fiber cable 30.

  The core 31 has a higher refractive index than the clad 34. Thereby, the light transmitted through the core 31 repeats total reflection at the boundary surface with the clad 34, and light is transmitted through the core 31 without leaking into the clad 34.

  The protective material 35 has a role of preventing the influence of side pressure and the like on the light transmitted through the core 31.

(Installation method of the light receiving unit 10)
Next, as shown in FIG. 4, a method for installing the light receiving unit 10 will be described with reference to a cross-sectional view of the light receiving unit 10 in the direction of arrows AA in FIG.

  As shown in FIG. 4, the light receiving unit 10 is installed by adhering a double-sided tape (not shown) or the like to the light-receiving side adhesive unit 14 and attaching the double-sided tape to the ceiling surface 200. In the present invention, the installation of the light receiving unit 10 is not limited to the double-sided tape, and any method may be used as long as the light receiving side bonding unit 14 and the ceiling surface 200 can be bonded.

  Furthermore, the light receiving unit 10 is installed on the ceiling surface 200 such that a concave curved surface faces the ceiling surface 200. That is, the opening surface of the light collecting portion 11 formed in a bowl shape with a concave curved surface is installed on the ceiling surface 200 so as to face the ceiling surface 200. At this time, since the light receiving side attachment portion 13 has a curved shape, a gap is formed between the light collecting portion 11 and the ceiling surface 200. The light receiving unit 10 receives the infrared rays 100 emitted from the remote controller 2 through this gap.

(Installation method of the light emission part 20)
Next, as shown in FIG. 5, the installation method of the light emission part 20 is demonstrated using sectional drawing of the light-receiving part 10 in the BB arrow direction of FIG.

  As shown in FIG. 5, the light emitting unit 20 is installed by sticking a double-sided tape (not shown) or the like to the light-emitting side adhesive unit 24 and installing the light emitting unit 20 on the television 3 by adhesion of the double-sided tape. In the present invention, the installation of the light receiving unit 10 is not necessarily limited to the double-sided tape, and any method may be used as long as the light output side bonding unit 24 and the television 3 can be bonded.

  Further, the light exit unit 20 is installed in the television 3 such that the opening surface of the light leakage prevention unit 21 formed in a bowl shape faces the light receiving unit 40 of the television 3. In addition, since the light emission part 20 does not receive the infrared rays 100 from the outside unlike the installation of the light receiving part 10, it is not always necessary to have a gap with the television 3.

(Installation method of optical fiber cable 30)
Next, the installation method of the optical fiber cable 30 is demonstrated using FIG. In the present embodiment, the light receiving unit 10 is installed on the ceiling surface 200, and the light emitting unit 20 is installed on the television 3. Since the optical fiber cable 30 can select a desired length and can be bent flexibly, the optical fiber cable 30 can be connected freely even if the light receiving unit 10 and the light output unit 20 are separated.

  As shown in FIG. 1, the optical fiber cable 30 connected to the light receiving unit 10 descends from the ceiling surface 200 toward the floor surface 400 along the wall surface 300 and bends toward the base 500 just before reaching the floor surface 400. And it installs in the light-receiving part (not shown) of the television 3 via the stand 500. FIG.

  By installing the optical fiber cable 30 in this way, even when a long optical fiber cable 30 is used, the optical fiber cable 30 is not obstructed because it is installed along the wall surface 300, so that an operator of the remote controller 2 or the like You won't get caught in

(Receiving operation of the infrared ray 100 in the light receiving unit 10)
Next, how the infrared rays 100 emitted from the remote controller 2 are received will be described using the cross-sectional view of the light receiving unit 10 shown in FIG.

  As described above, the light receiving unit 10 is installed on the ceiling surface 200 such that the concave curved surface faces the ceiling surface 200. By installing the light receiving unit 10 in this way, the infrared ray 100 emitted from the remote controller 2 is reflected once on the ceiling surface 200. After that, the reflected infrared ray 100 is reflected again by the concave curved surface of the light collecting portion 11 and is condensed on the light receiving side connecting portion 12. The infrared ray 100 collected on the light receiving side connecting portion 12 passes through the hole 15 of the light collecting portion 11 and the light receiving side connecting portion 12 and transmits the optical fiber cable 30.

  Thereby, even when the infrared ray 100 emitted from the remote controller 2 is irradiated to a position away from the light receiving unit 10, the infrared ray 100 is directed toward the optical fiber cable 30 by utilizing the fact that the infrared ray 100 is reflected on the ceiling surface 200. It can be condensed.

  In addition, even when the infrared ray 100 is irradiated at a position away from the light receiving side connecting portion 12, the infrared ray 100 can be easily collected toward the optical fiber cable 30 by the reflection of the concave curved surface of the light collecting portion 11, so The light receiving range of the part 10 is expanded.

(Light emission operation of the infrared ray 100 in the light emission part 20)
Next, how the infrared ray 100 transmitted through the optical fiber cable 30 is emitted from the light output unit 20 will be described with reference to a sectional view of the light output unit 20 shown in FIG.

  As shown in FIG. 5, the infrared ray 100 received from the light receiving unit 10 is transmitted through the optical fiber cable 30, passes through the hole 25 included in the light output side coupling unit 22 and the light leakage prevention unit 21, and is emitted from the light output unit 20 to the outside. Idemitsu. At this time, even if the emitted infrared ray 100 is reflected and refracted by the inner surface of the hole 25, the emitted infrared ray 100 is repeatedly reflected again by the concave curved surface of the light leakage prevention unit 21 and is reflected on the light receiving unit 40 of the television 3. Irradiated, remote control such as channel switching becomes possible.

  As described above, the infrared ray 100 emitted from the remote controller 2 for operating the television 3 is once received by the light receiving unit 10 of the infrared transmission device 1, and the infrared ray 100 is again transmitted from the light emitting unit 20 via the optical fiber cable 30. Can emit light. Thus, even when there is an obstacle between the remote control 2 and the light receiving unit 40 of the television 3 to be operated, the light emitting unit 20 of the infrared transmission device 1 is reliably installed in the light receiving unit 40 of the television 3. The infrared ray 100 emitted from the remote controller 2 can be received by the light receiving unit 40 of the television 3.

  Further, by using the optical fiber cable 30, it is not necessary to convert the received infrared ray 100 into an electric signal or the like in order to transmit the infrared ray 100 received by the light receiving unit 10 of the infrared transmission device 1, and the received infrared ray 100 is directly used for the television 3 to be operated. The light receiving unit 40 can receive light. Furthermore, since a desired length can be selected and bending can be performed flexibly, the degree of freedom of installation of the infrared transmission device 1 is improved.

(Outline of Embodiment of the Present Invention)
As described above, the infrared transmission device 1 according to the embodiment of the present invention includes the light receiving unit 10 that receives the infrared ray 100 that operates the electric device (TV 3) emitted from the remote controller 2, and the light receiving unit 10 at one end. A transmission path (optical fiber cable 30) for transmitting the infrared ray 100 provided at the other end with a light emitting portion 20 for emitting the infrared ray 100 received from the light receiving portion 10 to an electric device (television 3). Yes.

  According to the above configuration, the light receiving unit 10 of the infrared transmission device 1 once receives the infrared ray 100 emitted from the remote controller 2 in order to operate the electric device (TV 3), and passes through the transmission path (optical fiber cable 30). Thus, the infrared light 100 can be emitted again from the light emitting unit 20. Thereby, even when there is an obstacle between the remote controller 2 and the light receiving unit 10 of the electric device (TV 3) to be operated, the light emitting unit 20 of the infrared transmission device 1 is changed to the light receiving unit (TV 3) of the electric device. By installing in the light receiving unit 40), the infrared ray 100 emitted from the remote controller 2 can be surely received by the light receiving unit of the electric device (the light receiving unit 40 of the television 3).

  Further, in the infrared transmission device 1 according to the present invention, the transmission path may be the optical fiber cable 30.

  According to said structure, in order to transmit the infrared rays 100 which the light-receiving part 10 of the infrared rays transmission apparatus 1 received, it is not necessary to convert into the electrical signal etc., and the received infrared rays 100 as it is are the light-receiving part ( The light receiving unit 40) of the television 3 can receive light. Furthermore, since a desired length can be selected and bending can be performed flexibly, the degree of freedom of installation of the infrared transmission device 1 is improved.

  Further, in the infrared transmission device 1 according to the present invention, the infrared ray 100 emitted from the remote controller 2 is reflected, and the direction of the infrared ray 100 is changed to a connection portion (light reception side connection portion 12) between the light receiving portion 10 and the transmission path (optical fiber cable 30). ) May have a concave curved surface (light condensing part 11).

  According to the above configuration, the infrared ray 100 emitted from the remote controller 2 is reflected by the concave curved surface (the condensing unit 11), thereby connecting the light receiving unit 10 of the infrared transmission device 1 and the transmission path (optical fiber cable 30). The direction of the infrared ray 100 can be directed to the portion (light receiving side connecting portion 12). Thereby, even when infrared rays 100 are irradiated to the position away from the connection part (light reception side connection part 12) of the light receiving part 10 and the transmission path (optical fiber cable 30), the reflection of the concave curved surface (condensing part 11). Thus, the infrared ray 100 can be easily condensed toward the transmission path (optical fiber cable 30), and the light receiving range of the light receiving unit 10 is expanded.

  In the infrared transmission device 1 according to the present invention, the light receiving unit 10 may be attached to the ceiling surface 200 such that the concave curved surface (the light collecting unit 11) faces the ceiling surface 200.

  According to the above configuration, even when the infrared ray 100 emitted from the remote controller 2 is irradiated to a position away from the light receiving unit 10, the infrared ray 100 is reflected on the ceiling surface 200, and the infrared ray 100 is transmitted through the transmission path. Light can be condensed toward (optical fiber cable 30).

  In the infrared transmission device 1 according to the present invention, the transmission path (optical fiber cable 30) may be installed along the wall surface 300.

  According to the above configuration, even when a long transmission line (optical fiber cable 30) is used, it is not disturbed because it is installed along the wall surface 300, and the operator of the remote controller 2 can transmit the transmission line (optical fiber). It does not get caught by the cable 30).

(Modification of this embodiment)
The embodiment of the present invention has been described above. The present invention need not be limited to the above embodiment. Another embodiment of the present invention will be described below with reference to FIGS.

  For example, FIG. 6 is a cross-sectional view of the light receiving unit 10 in another embodiment of the present invention. Instead of the curved light receiving side mounting portion 13 shown in FIG. 4, a configuration like a light receiving side mounting portion 130 orthogonal to the ceiling surface 200 shown in FIG. 6 may be used. In this case, it is easier to create a gap between the light collecting unit 11 and the ceiling surface 200 than the curved light receiving side attachment unit 13.

  Moreover, FIG. 7 is sectional drawing of the light emission part 20 in another embodiment of this invention. Instead of the light leakage prevention part 21 and the light emission side attachment part 23 shown in FIG. 5, it is good also as a structure like the light emission side attachment part 230 which can be installed without a clearance gap with respect to the ceiling surface 200 shown in FIG. In this case, since the emitted infrared rays 100 are not likely to leak to the outside, the infrared rays 100 can be irradiated to the light receiving unit 40 of the television 3 more reliably.

  FIG. 8 is an overall view of the room in which the infrared transmission device 1 according to another embodiment of the present invention is installed.

  As in FIG. 1, a TV 3 that can be remotely controlled by the remote controller 2 is arranged near the wall surface 300 in the same room. In the case of FIG. 8, there is an entrance / exit 600 where a passerby enters and exits in the vicinity of the television 3. In this case, if one infrared transmission device 1 is arranged as shown in FIG. 1, the optical fiber cable 30 crosses the entrance / exit 600, which may hinder passers-by.

  Therefore, in another embodiment of the present invention as shown in FIG. 8, two infrared transmission devices 1a and 1b are arranged with the entrance / exit 600 interposed therebetween. Thereby, a passerby who passes through the entrance / exit 600 can remotely operate the television 3 by the remote controller 2 without craving with the optical fiber cable 30.

  In the present embodiment, the television 3 is used as an example of the electric device. However, the present invention is not limited to this, and the electric device can be installed in any electric device that can be remotely operated by the remote controller 2. You may do it.

  The embodiments of the present invention have been described above, but only specific examples have been illustrated, and the present invention is not particularly limited. Specific configurations and the like can be appropriately changed in design. In addition, the actions and effects described in the embodiments of the present invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to things.

1 is an overall view of a room where an infrared transmission device of the present invention is installed. It is a block diagram of an infrared transmission device. It is a block diagram of an optical fiber cable. It is sectional drawing of the light-receiving part in the AA arrow direction of FIG. It is sectional drawing of the light emission part in the BB arrow direction of FIG. It is sectional drawing of the light-receiving part in another embodiment of this invention. It is sectional drawing of the light emission part in another embodiment of this invention. It is a general view of a room where an infrared transmission device according to another embodiment of the present invention is installed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Infrared transmission apparatus 2 Remote control 3 Television 10 Light reception part 20 Light emission part 30 Optical fiber cable 100 Infrared 200 Ceiling surface 300 Wall surface 400 Floor surface 500 units

Claims (5)

A light receiving unit for receiving infrared rays for operating an electric device emitted from a remote control device;
A transmission path for transmitting the infrared light, wherein the light receiving unit is provided at one end, and a light emitting unit for emitting the infrared light received from the light receiving unit to the electrical device is provided at the other end;
Infrared transmission device.   The infrared transmission device according to claim 1, wherein the transmission path is an optical fiber cable.   The light receiving portion has a concave curved surface that reflects the infrared rays emitted from a remote control device and directs the direction of the infrared rays toward a connection portion between the light receiving portion and the transmission path. The infrared transmission device according to claim 1 or 2.   4. The infrared transmission device according to claim 1, wherein the light receiving unit is attached to the ceiling surface so that the concave curved surface faces the ceiling surface. 5. The infrared transmission apparatus according to claim 1, wherein the transmission path is installed along a wall surface.

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