JP2010224339A - Electrical equipment - Google Patents

Abstract

An electrical apparatus provided with a display device that can ensure a neat design when not displayed and is excellent in visibility and cognition when displayed.
A cover 20 that has been hard-performed is attached to the surface of a housing 10 of an electrical device, a display chamber 31 is provided on the back side of the cover 20, and the back wall of the display chamber 31 is substantially in the display chamber 31. A light guide 40 that partially protrudes from the center portion directly faces the cover 20 is disposed, an LED 60 is disposed on the opposite side of the projecting portion of the light guide 40, and the left and right wall surfaces 31 a of the display chamber 31. Is provided in a staircase shape so as to expand toward the cover 20 side.
[Selection] Figure 1

Description

  The present invention relates to an electric device including a display device.

  FIG. 6A shows a conventional display device for an electric device. In this display device, a light guide 120 mixed with a light scattering material is inserted from the back surface of an opening 111 formed in the housing 110 of the electric device so that the tip protrudes to the front surface, and is positioned on the back surface of the housing 110. The LED 150 attached to the circuit board 140 is held by the LED holder 130 so as to face the back surface of the light guide 120.

  In this display device, when the LED 150 is turned on, the light generated there is prevented from leaking to the surroundings by the LED holder 130 and enters the light guide 120. As a result, the light is diffusely reflected and diffused inside the light guide 120, and the tip of the light guide 120 appears to shine.

  Therefore, for example, if the light guide 120 is formed long in the vertical direction on the paper surface of FIG. 6A and a plurality of LEDs 150 are arranged in the vertical direction on the paper surface, the current operation of the electric device and the power saving state Etc. can be displayed as a form in which a continuous line expands and contracts in a direction perpendicular to the surface.

  FIG. 6B shows another conventional example in which the LED holder 130 is eliminated and the LED holder portion 112 is integrally provided on the back surface of the housing 110. Such a display device as shown in FIGS. 6A and 6B is described in Patent Document 1, for example.

JP 2002-149098 A

  However, in the display device shown in FIG. 6, even when the LED 150 is turned off and no display is performed, the leading end of the light guide 120 protrudes from the front surface of the housing 110 and is not noticeable. There is a problem that damages. Further, although the light guide 120 protrudes, the visibility is high when the illumination environment is dark, but when it is bright, there is a problem that lighting is difficult to visually recognize because it directly receives ambient light.

  The present invention has been made in view of the above points, and an object of the present invention is to ensure a neat design when not displayed, and to provide an electric device provided with a display device having excellent visibility and recognition when displayed. Is to provide.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided a cover that is hard-permeabilized on a surface of a housing of an electric device, a display chamber is provided on the back side of the cover, and the display chamber is provided in the display chamber. A light guide body, a part of which protrudes from the substantially central portion of the back wall directly facing the cover, a light source disposed on the opposite side of the projecting portion of the light guide body, and an inner wall of the display chamber The display device is characterized in that it includes a display device formed in a staircase shape so as to expand at least a part thereof toward the cover side.

  According to a second aspect of the present invention, in the electric device according to the first aspect, the display chamber is characterized in that the back side of the stepped step surface is farther from the cover than the corner side.

  According to a third aspect of the present invention, in the electric device according to the first or second aspect, the display chamber is formed with a light-shielding rib protruding in the direction of the cover on a corner side of the stepped step surface. Features.

  According to the present invention, when the light source is turned off, the light guide cannot be seen from the outside, and a neat design can be secured. In addition, when the light source is turned on, the light guide body shines and floats and the inner wall of the display room has a striped pattern, so that the distinction between display and non-display becomes clear, and display with excellent visibility and recognition is performed. In addition, the display itself gives a fresh impression, and power can be given to the power display.

(A) is the front view which removed the cover of the display apparatus of the Example of this invention, (b) is a longitudinal cross-sectional view, (c) is a cross-sectional view. (A) is the external appearance perspective view at the time of light extinction of the display apparatus of the Example of this invention, (b) is the external appearance perspective view at the time of lighting. It is an external appearance front view at the time of light extinction of the display apparatus of the modification of the Example of this invention. It is a perspective view of the indoor unit of the air conditioner to which the display apparatus of the Example of this invention is applied. It is a cross-sectional view of a display device of another modification of the embodiment of the present invention. (A) is a longitudinal cross-sectional view of the conventional display apparatus, (b) is a longitudinal cross-sectional view of another conventional display apparatus.

  1A to 1C show a display device according to an embodiment of the present invention. Reference numeral 10 denotes a housing of the electric device, and an opening 11 is formed in a part of the front surface thereof, and the opening 11 is covered with a cover 20. The cover 20 is subjected to a non-perspective treatment so that the inside is difficult to see from the surface by a half mirror or a smoke-colored resin material, and the surface is flush with the surface of the housing 10. Reference numeral 30 denotes a holder made of a light-shielding resin in which a display chamber 31 and a light source chamber 32 are partitioned by a partition wall 33, 40 denotes a light guide inserted through the partition wall 33 of the holder 30, and 50 denotes a back surface of the holder 30. A circuit board 60 is an LED as a light source attached to the circuit board 50 so as to face the light guide 40.

  The display chamber 31 has a staircase shape so that the left and right wall surfaces 31a are expanded on the cover 20 side. The step-shaped wall surface 31 a is lower than the corner portion 31 b 1 of the step surface 31 b of the staircase so that the back portion 31 b 2 is away from the cover 20. Note that the vertical surface 31c of the wall surface 31a is not vertical, and may overhang outward so that the step surface 31b becomes wider. In addition, the upper and lower wall surfaces 31d of the display chamber 31 are subjected to dark color processing by painting or dark color parts and the like, and unlike the left and right side walls 31a, light hardly reflects.

  The light guide 40 is formed into a plate shape with a resin material or a transparent resin material in which a light scattering material is blended, and the center of the tip portion has a peak shape (blade shape) along the longitudinal direction (vertical direction). A collar 41 is formed on the rear surface, and the back end surface is a flat surface and faces the LED 60. That is, a part of the light guide 40 protrudes in the display chamber 31 from the substantially central portion of the back wall of the display chamber 31 so as to face the cover 20. The height of the front end portion (projection height) of the light guide 40 is preferably high enough to illuminate the wall surface 31a while causing a shadow on the wall surface 31a, as will be described later. The entire surface of the tip portion (upper side of FIG. 1C) than the ridge 41 is subjected to graining with fine irregularities until the ridge 41 stops at the opening 33a formed in the partition wall 33. It is inserted from the side. When this display device is applied to the indoor unit 70 of the air conditioner shown in FIG. 4A, it is incorporated as a display device of the display unit 80 in front of the display device.

  In the display device of the present embodiment, when the LED 60 is turned off, the cover 20 is hard-performed, so that the display chamber 31 and the light guide 40 cannot be seen from the outside, as shown in FIG. Thus, a clean design can be secured, and the surface of the cover 20 is flush with the surface of the housing 10 of the electric device, so that it is difficult to get dirty and has good cleaning properties.

  On the other hand, when the three LEDs 60 are lit, the back surface of the light guide 40 is illuminated almost evenly, and light is emitted from the tip of the light guide 40. Since the cover 20 such as a half mirror or a smoke-colored resin material transmits light from the inside, it is visible from the outside. Moreover, the light guide 40 is formed of a resin material or a transparent resin material mixed with a light scattering material, and the entire surface of the tip portion is subjected to graining, so that the entire surface of the tip shines with high brightness. It becomes like this. At this time, the light emitted from the tip of the light guide 40 is reflected by the vertical surfaces 31c of the left and right wall surfaces 31a of the display chamber 31 and radiates in the direction of the cover 20, as shown in FIG. Is done. At this time, since the back part 31b2 lower than the corner part 31b1 is shielded by the corner part 31b1, the light reaching the back part 31b2 is weak and becomes a shadow part. Therefore, as shown in FIG. 2B, the left and right vertical surfaces 31c of the display chamber 31 emerge as bright vertical stripe patterns. Along with the light guide 40 that shines with high brightness that appears to appear three-dimensionally in the center, the left and right wall surfaces shine in a striped pattern toward the cover 20 so that the light spreads around Visible, for example, has a powerful effect on power display. As a result, the distinction between display and non-display is clarified, and not only display with excellent visibility and recognition is performed, but the display itself gives a fresh impression.

  The display chamber 31 described with reference to FIG. 1 is a case where only the left and right wall surfaces 31 a are formed in a stepped shape so as to expand toward the cover 20, but the upper and lower wall surfaces 31 d of the display chamber 31 are formed. Also, it may be formed in a step shape so as to expand toward the cover 20 (not shown). In this case, when the LED 60 is turned on by painting or applying dark color processing to each step-like surface of the wall surface 31d by dark parts or the like, the upper and lower stairs appear in shades as shown in FIG. In addition, it is possible to realize a display form that has a depth and that allows light to spread in the vertical direction. When the LED 60 is turned off, the display chamber 31 and the light guide 40 cannot be seen from the outside as in FIG.

  In the display chamber 31 described with reference to FIG. 1, the corner portion 31b1 of the stepped step surface 31b of the left and right wall surfaces 31a has a square shape of about 90 degrees as it is, but the corner portion 31b1 as shown in FIG. 2b, the light emitted from the light guide 40 is blocked by the light blocking rib 31b3 and is difficult to reach the back of the step surface 31b. Therefore, as shown in FIG. A similar vertical stripe pattern can be raised.

  In FIG. 1, the holder 30 is formed independently and is attached to the rear surface of the housing 10. However, the holder 30 may be formed integrally with the housing 10. Moreover, as shown in FIG.4 (b), you may make it attach the holder 30 which has the display chamber 31 as the independent housing | casing 10b.

  In FIG. 1, the number of LEDs 60 is three, but may be one when the light guide 40 is short, or three or more when the light guide 40 is long.

  Further, as shown in FIG. 4A, a mark or a brand name may be stamped 21 on the surface of the cover 20 of the display unit 80. In this case, a high-class feeling can be given to the air conditioner 70 by a three-dimensional design process even when it is not lit, and light from the back surface is transmitted during lighting so that the lighting display is not affected.

DESCRIPTION OF SYMBOLS 10, 10b: Housing | casing of electrical equipment, 11: Opening 20: Cover, 21: Engraving 30: Holder, 31: Display room, 31a: Left and right wall surface, 31b: Step surface, 31b1: Corner | angular part, 31b2: Back part, 31b3 : Light shielding rib, 31c: vertical surface, 31d: upper and lower wall surface, 32: light source chamber, 33: partition wall, 33a: opening 40: light guide, 41: ５０ 50: circuit board 60: LED
70: Indoor unit of air conditioner 80: Display unit 110: Housing of electrical equipment, 111: Opening, 112: LED holder unit 120: Light guide body 130: LED holder 140: Circuit board 150: LED

Claims (3)

  A cover that has been hard-performed is attached to the surface of the housing of the electrical equipment, a display chamber is provided on the back side of the cover, and a part of the display chamber from the center of the rear wall of the display chamber faces the cover. And a light source disposed on the side opposite to the projecting portion of the light guide, and at least a part of the inner wall of the display chamber is expanded toward the cover. An electric device comprising a display device formed in a staircase shape. The electric device according to claim 1,
In the display chamber, the back side of the stepped step surface is further away from the cover than the corner side. In the electric equipment according to claim 1 or 2,
The display device is provided with a light-shielding rib that protrudes in the direction of the cover on a corner side of the stepped step surface.

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