JPH11148676A - Light receiving unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent electrostatic discharge from a finger to a light receiving element by forming a translucent cover having U-shaped cross-section while closing an opening made in an exterior panel and covering the front and side faces of the light receiving element fixed to a substrate while facing the opening. SOLUTION: An opening 1a is made in an exterior panel 1 in front of the indoor unit of an air conditioner and a recess 1b is made in the circumferential fringe of the opening 1a. A translucent cover 2 made of an infrared ray transmitting resin having U-shaped cross-section is then inserted into the opening 1a from the front of the exterior panel 1 while covering the front and side faces of the light receiving element 3 and secured in place by fitting the flange 2a of the translucent cover 2 in the recess 1b. Even it an electrostatically charged finger is brought close to the light receiving element 3, or the like, electrostatic discharge to the light receiving element 3 does not take place and thereby the light receiving element 3 can be protected against erroneous operation due to electrostatic noise or damage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light receiving device for an air conditioner, and more particularly to a device for preventing static electricity from being discharged from a finger or the like to a light receiving element.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, in a light receiving device of an air conditioner, an opening 1a is provided in an exterior panel 1, a recess 1b is formed in the periphery of the opening 1a, and a remote control is provided in the recess 1b. A light-transmitting cover 2 that transmits an optical signal such as infrared light emitted from the camera is fitted, and the light-receiving element 3 attached to the substrate 4 or the like is arranged on the back surface of the opening 1a. However, in this configuration, the concave portion 1b and the light-transmitting cover 2
When a finger charged with static electricity is brought close to the gap, the static electricity is discharged from the finger to the light receiving element 3, and the light receiving device may malfunction due to the electrostatic noise, and in some cases, the light receiving element 3 may be damaged. There was a problem that there was.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and provides a light receiving device for an air conditioner which prevents static electricity from being discharged to a light receiving element or the like even when an electrostatically charged finger is approached. It is intended to provide.

[0004]

According to the present invention, an opening provided in an exterior panel of an indoor unit is closed by a light-transmitting cover, and the opening is provided on a substrate or the like corresponding to the opening. In a light receiving device of an air conditioner, in which a light receiving element is disposed and the light receiving element receives an optical signal such as infrared light emitted from a remote controller, the light transmitting cover is formed in a U-shaped cross section, and a front surface of the light receiving element is provided. And a light receiving device for an air conditioner that covers the side surface to prevent static electricity from being discharged from a finger or the like to the light receiving element.

A flange is formed on an upper side wall of the light-transmitting cover to close a gap with the opening.

[0006] On the side wall of the light-transmitting cover, a mounting portion having an engaging hole is provided so as to be in contact with the peripheral back surface of the opening of the exterior panel, and is engaged with the engaging hole on the back surface of the peripheral edge of the opening. A locking claw was provided.

A flange is formed on an upper side wall of the light-transmitting cover to close a gap with the opening, and a projection is provided at a lower portion of the flange, while a notch corresponding to the projection is formed on a periphery of the opening. And a U-shaped engaging claw that is folded back from the rear surface of the outer panel outside the notch to the notch and locks the tip to the protrusion.

[0008] A locking hole is provided in the projection, and the U-shaped locking claw is locked in the locking hole.

The surface of the light-transmitting cover is formed so as to protrude from the surface of the exterior panel.

[0010] The surface of the translucent cover is formed into a curved surface.

[0011]

As described above, in the light receiving device for an air conditioner according to the present invention, the light transmitting cover is formed in a U-shaped cross section and covers the front and side surfaces of the light receiving element. This can prevent static electricity from being discharged to the light receiving element.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a light receiving device of an air conditioner according to the present invention. FIG. 1 is a side sectional view showing a main part of an embodiment of a light receiving device of an air conditioner according to the present invention. In the figure, reference numeral 1 denotes an exterior panel on the front of an indoor unit of an air conditioner, which has an opening 1a corresponding to a light-receiving element 3 described later, and further has a recess 1b formed on the periphery of the opening 1a. Reference numeral 2 denotes a translucent resin which transmits infrared rays or the like, is formed in a substantially U-shape to cover the front and side surfaces of a light receiving element 3 described later, and has a flange 2a on an upper side wall for closing a gap with the opening 1a. This is a light-transmitting cover provided with. 3 is a light receiving element for receiving an infrared signal from a remote controller;
It is attached to.

FIG. 2 is a sectional side view showing a main part of another embodiment of the light receiving device of the air conditioner according to the present invention. FIG. 2A is a completed view, and FIG. 2B is an exploded view. . As shown in the figure,
On the side wall of the light-transmitting cover 2 which is formed in a substantially U-shape with a light-transmitting resin that transmits infrared rays or the like so as to cover the front and side surfaces of the light receiving element 3, on the peripheral back surface of the opening 1a of the exterior panel 1 An attachment portion 2b having an abutment and having a locking hole 2b1 is provided. On the other hand, a locking claw 1c that locks with the locking hole 2b1 is provided on the back surface of the periphery of the opening 1a of the exterior panel 1.

FIG. 3 is a sectional side view showing a main part of another embodiment of the light receiving device of the air conditioner according to the present invention. FIG. 3- (A) is a completed view and FIG. 3- (B) is an exploded view. . As shown in the figure,
A flange 2a is formed on the upper side wall of the light-transmitting cover 2 having a curved surface, and a projection 2c is provided below the flange 2a. On the other hand, a notch 1d corresponding to the protrusion 2c is provided on the periphery of the opening 1a of the exterior panel 1, and the back of the exterior panel 1 outside the notch 1d is folded back to the notch 1d, and the tip is formed by the projection 2c. Is provided with a U-shaped locking claw 1e.

As shown by dotted lines in FIGS. 3A and 3B, a locking hole 2c1 is provided in the projection 2c.
The U-shaped locking claw 1e may be locked in the locking hole 2c1.

In the above configuration, the light transmitting cover 2
The method for attaching the panel to the exterior panel 1 will be described. In the case of the embodiment shown in FIG. 1, the light-transmitting cover 2 is inserted into the opening 1a from the front surface of the exterior panel 1, and the flange 2a of the light-transmitting cover 2 is recessed 1b
And fitted and fixed. In the case of the embodiment of FIG.
The translucent cover 2 is inserted into the opening 1a from the back surface of the exterior panel 1, and the engagement claw 1c provided on the exterior panel 1 is inserted into the engagement hole 2b1 provided on the mounting portion 2b to be locked and fixed. FIG.
In the case of this embodiment, the light-transmitting cover 2 is inserted into the opening 1a from the front surface of the exterior panel 1, and the projection 2c provided on the light-transmitting cover 2 is inserted into the notch 1d of the exterior panel 1 to form the projection. The U-shaped locking claw provided on the exterior panel 1 is locked and fixed to the locking hole 2c1 provided in the projection 2c or the projection 2c.

Next, the effect will be described. 1 to 3
As shown in (2), the light receiving element 3 is covered on its upper surface and side surfaces by the light transmitting cover 2, so that the fringe distance becomes longer,
As shown in FIG. 2A, even if an electrostatically charged finger approaches or touches the vicinity of the opening 1a, the static electricity is not discharged to the light receiving element 3.

FIG. 4 is an explanatory diagram for explaining the effect of the light receiving device of the air conditioner according to the present invention. As shown in FIG. 3, by forming the surface of the light-transmitting cover 2 into a curved surface, as shown in FIG. 4, the receivable angle from the remote controller can be widened by the lens effect of the light-transmitting cover 2. .

[0019]

As described above, according to the light receiving device for an air conditioner according to the present invention, the light transmitting cover is formed to have a U-shaped cross section and covers the front and side surfaces of the light receiving element.
The discharge of static electricity from a finger or the like to the light receiving element can be prevented, and the light-receiving angle from the remote controller can be widened because the surface of the light transmitting cover is formed into a curved surface.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a main part of an embodiment of a light receiving device of an air conditioner according to the present invention.

FIG. 2 is a sectional side view showing a main part of another embodiment of the light receiving device of the air conditioner according to the present invention. FIG.
-(B) is an exploded view.

FIG. 3 is a side sectional view showing a main part of another embodiment of the light receiving device of the air conditioner according to the present invention. FIG.
-(B) is an exploded view.

FIG. 4 is an explanatory diagram for explaining an effect of the light receiving device of the air conditioner according to the present invention.

FIG. 5 is a side sectional view of a main part showing a light receiving device of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterior panel 1a Opening 1b recess 1c Locking claw 1d Notch 1e U-shaped locking claw 2 Translucent cover 2a Flange 2b Attachment 2b1 Locking hole 2c Projection 2c1 Locking hole 3 Light receiving element 4 Substrate

Claims (7)

[Claims] An opening provided in an exterior panel of an indoor unit is closed with a light-transmitting cover, and a light receiving element mounted on a substrate or the like is arranged corresponding to the opening, and light is emitted from a remote controller by the light receiving element. In a light receiving device of an air conditioner that receives an optical signal such as infrared light, the light-transmitting cover is formed in a substantially U-shaped cross section,
A light receiving device for an air conditioner, wherein a front surface and a side surface of the light receiving device are covered to prevent electrostatic discharge from a finger or the like to the light receiving device. 2. The light receiving device for an air conditioner according to claim 1, wherein a flange for closing a gap with the opening is formed on an upper side wall of the translucent cover. 3. A side wall of the light-transmitting cover is provided with a mounting portion having an engaging hole, which is in contact with a peripheral back surface of the opening of the exterior panel, and is provided on a rear surface of the peripheral edge of the opening with the engaging hole. The light receiving device for an air conditioner according to claim 1, wherein a locking claw for stopping is provided. 4. A flange for closing a gap with the opening is formed on an upper side wall of the light-transmitting cover, and a protrusion is provided at a lower portion of the flange, and a periphery of the opening corresponds to the protrusion. 2. The notch according to claim 1, wherein a notch is provided, and a U-shaped locking claw is provided, which is folded back from the rear surface of the exterior panel outside the notch to the notch and locks a tip of the notch to the protrusion. Air conditioner light receiving device. 5. The light receiving device for an air conditioner according to claim 4, wherein a locking hole is provided in the projection, and the U-shaped locking claw is locked in the locking hole. . 6. The light receiving device for an air conditioner according to claim 2, wherein a surface of the translucent cover is formed to protrude from a surface of the exterior panel. 7. The light receiving device for an air conditioner according to claim 6, wherein the surface of the light transmitting cover is formed into a curved surface.