JPH0613242U - Light receiving device for wireless remote control - Google Patents

Abstract

(57) [Summary] [Structure] Light receiving element 20, convex lens 17 arranged above this light receiving element 20, inverted conical reflecting mirror 15 arranged above this convex lens, and the periphery of this reflecting mirror. And a light receiving window disposed at. Then, an optical signal such as an infrared ray incident from the external operation unit through the light receiving window 14 is
It is configured to be reflected by the reflecting mirror 14 and focused on the light receiving element 20 by the convex lens 17. [Effect] A blind spot does not occur at the position of the operation unit with respect to the device body, and it is possible to substantially eliminate the restriction on the location of the operation unit with respect to the entire circumference of the device body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a light receiving device for a wireless remote controller attached to a device such as a portable DAT, MD, or CD player, and in particular, there is a substantial restriction on the place for placing an operation unit that generates an optical signal such as infrared rays. It is about things that can be eliminated.

[0002]

[Prior art]

 Conventionally, a light receiving device for a wireless remote controller attached to a device such as a portable DAT, MD, or a CD player has a built-in fixed device in the device body or an external type light receiving unit in the device body. The fixed one was the mainstream.

Therefore, the positional relationship between the device body and the operation unit is restricted, and the operation unit is positioned within an extremely limited range in order to allow an optical signal such as infrared rays from the operation unit to reach the light receiving unit. There was a need.

Therefore, recently, in order to loosen the restriction on the positional relationship between the device body and the operating portion, a device in which the light receiving unit can be rotated has been proposed or put into practical use.

[0005]

[Problems to be solved by the device]

 However, in the conventional light receiving device for a wireless remote control in which the light receiving unit can be rotated, since the signal is transmitted from the light receiving unit to the device connecting portion by a wire or the like, the light receiving unit is Could not be rotated 360 °, and the maximum rotation range was about 330 °.

Therefore, a blind spot occurs at the position of the operation unit with respect to the device body, and if the operation unit is set at an arbitrary position with respect to the device body, an optical signal may not reach the light receiving unit.

In view of the above point, the present invention has an object to provide a light receiving device for a wireless remote controller, which is capable of substantially eliminating the restriction of the place where the operating portion is placed with respect to the entire circumference of the device body.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, a light receiving device for a wireless remote controller according to the present invention comprises a light receiving element, a convex lens arranged above the light receiving element, and an inverted conical reflecting mirror arranged above the convex lens. And a light receiving window arranged around the reflecting mirror. Then, an optical signal such as an infrared ray incident from the external operation section through the light receiving window is reflected by the reflecting mirror and focused on the light receiving element by the convex lens.

[0009]

[Action]

 In the light receiving device for a wireless remote controller according to the present invention configured as described above, the optical signal emitted from the external operation unit enters the reflecting mirror from the light receiving window, is reflected there, and is reflected therebelow. It is focused on the light receiving element by the convex lens located.

In this case, since the reflecting mirror is formed in an inverted conical shape, it is possible to reflect optical signals from all directions facing the outer peripheral surface of the conical shape to the convex lens side.

Therefore, if such a light receiving device is attached to the main body of the device in a state where the light receiving window thereof projects above the upper surface of the main body of the device, for example, a blind spot does not occur at the position of the operation unit with respect to the main body of the device, This makes it possible to virtually eliminate the restrictions on the location of the operating part for the entire circumference.

[0012]

Embodiments Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of a light receiving device for a wireless remote controller according to the present invention.

In the figure, the light receiving device 10 of the present embodiment has a cylindrical case 12 having a cylindrical light receiving window 14 made of transparent or translucent synthetic resin or glass provided in the upper part in order from the upper side. A reflecting mirror 15, a convex lens 17, and a light receiving element 20 are arranged and fixed by appropriate means.

The reflecting mirror 15 is formed in an inverted conical shape, and the outer peripheral surface thereof is mirror-finished. The reflecting mirror 15 is positioned so as to share the center line G with the light receiving window 14 at substantially the same height. The bottom of the case is fixed to the top surface of the case 12.

A peripheral portion of the convex lens 17 is fixedly supported by the case 12, and the convex lens 17 is positioned so that the center line G passes through the center thereof.

The light-receiving element 20 is positioned such that the light-receiving surface portion 20 provided at the center of the upper surface of the light-receiving element 20 is located at the focal position of the convex lens 17, and a plurality of terminals 20b protruding downward from the lower surface of the light-receiving element 20. It is adapted to be soldered and connected to a device connecting portion or a printed wiring board (not shown) arranged in the device body 1.

In the light receiving device 10 of the present embodiment having such a configuration, the optical signal emitted from the external operation unit is transmitted from the light receiving window 14 to the reflecting mirror 15 as indicated by the arrow in FIG. The light enters, is reflected there, and is condensed by the convex lens 17 located below the light-receiving surface 20 a of the light-receiving element 20.

In this case, since the reflecting mirror 15 has an inverted conical shape and the light receiving window 14 is formed so as to surround the outer peripheral surface thereof, light from all directions facing the outer peripheral surface of the conical shape is obtained. The signal can be reflected to the convex lens 20 side.

Therefore, if the light receiving device 10 is attached to the device body 1 in such a state that the light receiving window 14 thereof projects above the upper surface of the device body 14, for example, the blind spot is located at the position of the operation section with respect to the device body 1. Thus, it is possible to substantially eliminate the restriction on the place where the operation unit is placed with respect to the entire circumference of the device body 1.

[0020]

[Effect of device]

 As will be understood from the above description, in the light receiving device for a wireless remote controller according to the present invention, an optical signal such as infrared rays incident from an external operation unit through the light receiving window is reflected by the reflecting mirror and the convex lens is used. Since it is configured to focus light on the light receiving element by the above, there is no blind spot in the position of the operation unit with respect to the device body, and it is possible to substantially eliminate the restriction of the place where the operation unit is placed with respect to the entire circumference of the device body. It is possible to obtain excellent effects.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a light receiving device for a wireless remote controller according to the present invention.

FIG. 2 is a cutaway perspective view schematically showing the light receiving device of the embodiment of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device body 10 Light receiving device 12 Case 14 Light receiving window 15 Reflecting mirror 17 Convex lens 20 Light receiving element

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical indication H04Q 9/00 371 Z 7170-5K

Claims (1)

[Scope of utility model registration request] 1. A light-receiving element, a convex lens arranged above the light-receiving element, a conical reflecting mirror arranged above the convex lens, and a light-receiving window arranged around the reflecting mirror. An optical signal such as infrared light that is incident through the light receiving window from an external operation unit is reflected by the reflecting mirror and is configured to be condensed on the light receiving element by the convex lens. Characteristic wireless receiver for wireless remote control.