JP4535805B2 - Display device - Google Patents

Description

  The present invention relates to a display device including a display plate that guides and emits light incident from a light source, and more particularly, to a display device that branches and emits light that is guided.

A conventional display device is disclosed in Patent Document 1. This display device has a light guide plate disposed behind the display panel and a light source disposed on the side of the light guide plate. The light guide plate has an exit surface that faces the display panel and a reflective surface that is inclined to face the exit surface. The light emitted from the light source is incident from the side of the light guide plate, and is reflected and guided by the light exit surface and the reflection surface. Then, light exceeding the critical angle exits from the exit surface and passes through the display panel. Thereby, the display panel can shine and display, and the space behind the display device can be used effectively.
Japanese Utility Model Publication No. 6-36001

  According to the display device disclosed in Patent Document 1, the electronic component and the light source disposed behind the display device are mounted on separate substrates or three-dimensionally bent substrates. For this reason, there is a problem in that the configuration of the electronic device on which the display device is mounted is complicated and a dead space is generated.

  In order to solve this problem, Japanese Patent Application No. 2003-363453 describes a display device in which a light source is arranged behind the end of the exit surface. This display device has a display plate that guides light and emits light from an emission surface provided on the front surface for display. An incident surface on which light emitted from the light source is incident is formed on the back side of the end portion of the display panel, and has a first reflecting surface that is inclined to face the incident surface. Further, the display plate is formed with a second reflecting surface that is inclined to face the emitting surface.

  Light incident from the incident surface is reflected by the first reflecting surface, and is reflected by the exit surface and the second reflecting surface to be guided. Then, light exceeding the critical angle is emitted from the emission surface. As a result, the display board shines and displays, and electronic components mounted on the same substrate as the light source can be placed behind the exit surface, simplifying the configuration of electrical equipment equipped with a display device and reducing dead space it can.

  However, according to the display device described in the above Japanese Patent Application No. 2003-363453, when a display plate is disposed around an opening such as an air outlet of an air cleaner, the light is reflected by the first reflecting surface and guided. Light is blocked by the opening. For this reason, there is a problem that light cannot be guided to a position away from the light source arranged at the end portion, and the visibility of the display panel is poor. Further, even in a display device in which the display plate branches in a U shape between the first reflection surface and the second reflection surface, there is a problem that light cannot be guided to a position away from the light source.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a display device capable of branching and emitting light guided through a display plate and improving visibility.

In order to achieve the above object, the present invention provides:
A light source;
An incident surface disposed on the back side facing the light source, an exit surface provided on the front side, a first reflecting surface that is inclined with respect to the incident surface and reflects light incident from the incident surface, A display plate disposed opposite to the light emitting surface and disposed in front of the light source, having a second reflecting surface that reflects the light reflected by the first reflecting surface and guides the light to the emitting surface;
In a display device comprising:
In the display panel, light guided between the first reflection surface and the second reflection surface is branched in a plane substantially parallel to the emission surface, and the reflection light of the first reflection surface is substantially parallel to the emission surface. It consists of a curved surface that radiates in a plane.

  According to this configuration, the emitted light of the light source enters from the incident surface, is reflected by the first reflecting surface, and is guided while being reflected by the emitting surface and the second reflecting surface. Then, light exceeding the critical angle is emitted from the emission surface. The first reflecting surface is formed of a curved surface, and the reflected light spreads radially on the first reflecting surface and is guided to the second reflecting surface of the display panel.

  According to the present invention, in the display device configured as described above, the first reflecting surface is a concave cylindrical surface.

  According to the present invention, in the display device configured as described above, the second reflecting surface is inclined with respect to the exit surface. According to this configuration, the reflected light of the first reflecting surface is reflected by the second reflecting surface and emitted from the emitting surface.

  According to the present invention, in the display device configured as described above, the incident surface is formed of a curved surface covering the light source.

  According to the present invention, in the display device configured as described above, the display plate has an opening surrounded by the emission surface, the light source is disposed at both ends of the opening, the incident surface, and the first reflection. It features a surface. According to this configuration, the light emitted from the light sources arranged at both ends is incident from the incident surfaces at both ends, reflected by the first reflecting surface, and branched around the opening to be guided.

  According to the present invention, in the display panel, the light guided between the first reflection surface and the second reflection surface branches in a plane substantially parallel to the emission surface, and the first reflection surface reflects the reflected light to the emission surface. Since it consists of the curved surface which radiates | emits within a substantially parallel surface, the reflected light of a 1st reflective surface spreads radially, and is guide | induced to a 2nd reflective surface. Therefore, the light blocked by the branch can be reduced and the visibility of the display device can be improved.

  Further, according to the present invention, since the first reflecting surface is formed of a concave cylindrical surface, a display device in which the reflected light of the first reflecting surface spreads radially and branches can be easily realized.

  Further, according to the present invention, since the second reflection surface is inclined with respect to the emission surface, the number of reflections of the second reflection surface and the emission surface can be reduced, the waveguide loss can be reduced, and the irradiation efficiency can be improved.

  Further, according to the present invention, since the incident surface is formed of a curved surface that covers the light source, it is possible to improve the irradiation efficiency of the display device by taking the light emitted from the light source into the display plate without leaking.

  Further, according to the present invention, the display panel has the opening surrounded by the exit surface, the light source is disposed at both ends of the opening, and the entrance surface and the first reflection surface are provided. A display plate can be arranged around an exit or the like to reduce the light blocked by the opening and improve the visibility of the display device.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an air cleaner provided with a display device according to an embodiment. In the air cleaner 1, the main body 10 is erected by the support of the base 11. The front surface of the main body 10 is covered with a front panel 12. The front panel 12 is provided with an air inlet 13 for taking in indoor air, and a side air inlet 14 is formed by a gap between the main body 10 and the front panel 12. An operation panel 15 for performing user operations is provided on the upper portion of the main body 10. In addition, a display device 80 that emits light according to the state of the air purifier 1 to notify the state of the air purifier 1 is provided around the air outlet 30 provided in the upper portion of the main body 10.

  FIG. 2 is a side sectional view showing a state in which the front panel 12 of the air cleaner 1 is removed. A blower 25 that intakes in the axial direction and exhausts in the circumferential direction is provided in the main body 10. The blower 25 is arranged with the intake side facing the intake port 13, and the front surface is covered with a ventilation panel 28 having a ventilation port 27. The ventilation panel 31 forms a ventilation path 31 extending vertically in the rear part of the main body 10. The ventilation path 31 is provided with an air outlet 29 that opens upward, and an air outlet 30 that is bent obliquely upward and opens forward. As a result, the exhaust air from the blower 25 is guided to the air outlets 29 and 30.

  An ion generator 26 is provided between the blower 25 and the outlet 29. As shown in FIG. 3, the ion generator 26 has an ion generation surface 26a that generates ions when a high voltage is applied.

A voltage having an AC waveform or an impulse waveform is applied to the ion generation surface 26 a of the ion generator 26. When the applied voltage of the ion generating surface 26a is positive, positive ions mainly composed of H ⁺ (H ₂ O) _n are generated, and when negative voltage is applied, negative ions mainly composed of O ₂ ⁻ (H ₂ O) _m are generated. appear. Here, n and m are integers. H ⁺ (H ₂ O) _n and O ₂ ⁻ (H ₂ O) _m aggregate on the surface of airborne bacteria and odor components and surround them.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria. Here, n ′ and m ′ are integers. Therefore, indoor sterilization and odor removal can be performed by generating positive ions and negative ions and sending them out from the air outlets 29 and 30. Note that one or both of the outlets 29 and 30 can be selected by a damper (not shown) to send out air.

H ⁺ (H ₂ O) _n + O ₂ ⁻ (H ₂ O) _m → OH + _1/2 O ₂ + (n + m) H ₂ O (1)
H ⁺ (H ₂ O) _n + H ⁺ (H ₂ O) _{n ′} + O ₂ ⁻ (H ₂ O) _m + O ₂ ⁻ (H ₂ O) _{m ′} → 2.OH + O ₂ + (n + n ′ + m + m ′) H ₂ O (2)
H ⁺ (H ₂ O) _n + H ⁺ (H ₂ O) _{n ′} + O ₂ ⁻ (H ₂ O) _m + O ₂ ⁻ (H ₂ O) _{m ′} → H ₂ O ₂ + O ₂ + (n + n ′ + m + m ′) H ₂ O (3)

  An air cleaning filter unit 20 and a humidifying unit 21 are disposed between the front panel 12 and the ventilation panel 28. The air cleaning filter unit 20 disposed facing the air inlet 13 (see FIG. 1) is designed to be incorporated into an air cleaner.

  The air cleaning filter unit 20 is provided with three types of filters, a pre-filter, a deodorizing filter, and a dust collection filter (all not shown) in order from the air suction side. The prefilter collects large dust in the intake air. Deodorizing filter Adsorbs odor components in the air to deodorize the air. The dust collection filter is composed of a HEPA filter and collects fine dust.

  A space 32 having a predetermined width is formed between the air cleaning filter unit 20 and the ventilation panel 28. By providing the space portion 32, the air that has passed through the air cleaning filter unit 20 flows smoothly into the vent hole 27, and pressure loss and noise can be reduced. The humidifying part 21 is arranged in the lower part of the space part 32.

  The humidification part 21 is comprised by the humidification filter 22, the tray 23, and the water tank 24 (refer FIG. 1). The water tank 24 stores water for humidification, and is erected on the side of the main body 10. The tray 23 supplied with water from the water tank 24 is provided with an opening (not shown) at the rear of the upper surface, and the humidifying filter 22 is inserted therein. The humidifying filter 22 is made of a water-absorbing material having water absorption, and sucks up water in the tray 23 and retains it.

4, 5 and 6 show a front view, a bottom sectional view and a side view of the display device 80, respectively. The display device 80 includes a display plate 81 and a light source 88. The light source 88 is composed of a two-color LED that emits blue and green light, and is disposed behind both ends of the display panel 81 . The display board 81 is made of a resin molded product such as polycarbonate, and has an opening 86 extending in the lateral direction at the center. The air outlet 30 (see FIG. 1) is configured by the opening 86, and an emission surface 85 is provided around the opening 86.

  An incident surface 82 that faces the light source 88 is provided on the back side of both ends of the display plate 81, and a first reflecting surface 83 that is continuously inclined to the emission surface 85 is formed on the front side that faces the incident surface 82. . A second reflecting surface 84 that is inclined with respect to the emission surface 85 is formed on the back side facing the emission surface 85. The second reflecting surface 84 is formed on a diffusing surface that diffuses light by embossing or the like.

  The light emitted from the light source 88 enters the display plate 81 from the incident surface 82 as indicated by the arrow D1, and is reflected by the first reflecting surface 83 in the direction of the second reflecting surface 84 as indicated by the arrow D2. The reflected light of the first reflecting surface 83 is reflected and guided by the second reflecting surface 84 and the exit surface 85. Then, the light reflected by the second reflecting surface 84 and exceeding the critical angle is emitted from the emitting surface 85 as indicated by an arrow D3.

  Since the second reflecting surface 84 is composed of an inclined surface and a diffusing surface, most of the light reflected by the first reflecting surface 83 is reflected by the second reflecting surface 84 without being repeatedly reflected and emitted from the emitting surface 85. The Thereby, the loss of waveguide can be reduced and the irradiation efficiency can be improved. In addition, as shown in FIG. 8, when the incident surface 82 is formed by the curved surface 89 covering the light source 88, more emitted light from the light source 88 can be taken into the display plate 81 to further improve the irradiation efficiency.

  FIG. 7 is a view taken in the direction of arrow B in FIG. 5, and is a view of the display plate 81 as viewed from a direction parallel to the first reflecting surface 83. As shown in the figure, the first reflecting surface 83 is formed of a concave cylindrical surface. As a result, the light reaching the first reflecting surface 83 is reflected radially in a plane parallel to the emitting surface 85 as indicated by an arrow D4 in FIG.

  In the air conditioner 1 having the above configuration, indoor air is taken into the main body 10 from the air inlet 13 when the blower 25 is driven. The air taken in from the intake port 13 passes through the air cleaning filter unit 20 as shown by an arrow A (see FIG. 2), and dust is collected, and viruses and allergens are inactivated. The air that has passed through the air cleaning filter unit 20 flows into the ventilation path 31 through the vent hole 27.

  Further, the lower air that has passed through the air cleaning filter unit 20 collides with the humidifying filter 22 and is shielded on the back side, so that the water absorption material is bent along the folded wall surface as shown by an arrow B (see FIG. 2). The air passage 22c rises from below to above. At this time, the water retained in the humidification filter 22 is vaporized and taken into the air flowing through the air passage 22 c, and the humidified air flows into the ventilation path 31 through the vent hole 27. In the air flowing through the ventilation path 31, ions released from the ion generator 26 and water molecules are mixed in the main body of the air cleaner 1. As a result, the water molecules are sent out into the room from the outlets 29 and 30 of the main body in a state of surrounding the ions.

  When positive ions and negative ions are generated by the ion generator 26, the light source 88 of the display device 80 emits blue light, and blue light is emitted from the emission surface 85 around the outlet 30. When only negative ions are generated by the ion generator 26, the light source 88 of the display device 80 emits green light, and green light is emitted from the emission surface 85 around the outlet 30. Thereby, the delivery state of ions is notified.

  The ions delivered into the room are surrounded by water molecules. At this time, when the humidification part 21 does not humidify the air, the particle diameter is estimated to be 2 to 3 nm. However, when the humidification part 21 is humidified, the number of water molecules increases and the particle diameter becomes about 18 nm. Presumed. For this reason, the degree of collision between airborne fungi such as fungi and viruses and ions increases. Further, when ions collide with dust in the air, the ions are protected by water molecules and disappearance is reduced. Therefore, floating bacteria in the room can be quickly removed by sending positive ions and negative ions into the room.

  Similarly, when only negative ions are delivered into the room, the ions are similarly surrounded by moisture, and the disappearance of ions due to collision with dust is reduced. Therefore, the relaxation effect can be obtained efficiently and quickly.

  Furthermore, when ions collide with fibers such as clothes, curtains, sofas, etc., the ions are surrounded by water molecules, so that they are protected and the disappearance of the ions is reduced. Accordingly, positive ions and negative ions surrounded by water molecules enter deep inside the fiber, surround and destroy the odor component adhering to the fiber, and the odor can be quickly and efficiently removed.

  According to the present embodiment, since the first reflecting surface 83 of the display device 80 is a curved surface, the reflected light of the first reflecting surface 83 is reflected radially and along the opening 86 in a plane parallel to the emission surface 85. Branch. Accordingly, it is possible to increase the light reaching the central portion in the left-right direction of the emission surface 85 without being blocked by the opening 86, and the visibility of the display device 80 is improved. Although the emission surface 85 is provided around the opening 86, the emission surface 85 may be a U-shaped display plate that is branched after the first reflection surface 83. Thereby, the visibility of the display device 80 can be improved by allowing light to reach both ends of the U-shape.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the display apparatus which radiate | emits light and alert | reports information, and can utilize for the air cleaner etc. which arranged the display apparatus around the opening part.

The perspective view which shows the air cleaner of embodiment of this invention. Side surface sectional drawing which shows the air cleaner of embodiment of this invention The perspective view which shows the ion generator of the air cleaner of embodiment of this invention. The front view which shows the display apparatus of the air cleaner of embodiment of this invention. Bottom sectional drawing which shows the display apparatus of the air cleaner of embodiment of this invention. The side view which shows the display apparatus of the air cleaner of embodiment of this invention. B arrow view of FIG. The side view which shows the other aspect of the display apparatus of the air cleaner of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air cleaner 10 Main body part 12 Front panel 13 Air inlet 14 Side air inlet 15 Operation panel 20 Air purifying filter unit 21 Humidifying part 22 Humidification filter 23 Tray 25 Blower 26 Ion generator 27 Ventilation hole 28 Ventilation panel 29, 30 blowing Exit 31 Ventilation path 32 Space 80 Display device 81 Display panel 82 Incident surface 83 First reflection surface 84 Second reflection surface 85 Output surface 88 Light source

Claims (5)

A light source;
An incident surface disposed on the back side facing the light source, an exit surface provided on the front side, a first reflecting surface that is inclined with respect to the incident surface and reflects light incident from the incident surface, A display plate disposed opposite to the light emitting surface and disposed in front of the light source, having a second reflecting surface that reflects light reflected by the first reflecting surface and guides the light to the emitting surface;
In a display device comprising:
The display panel reflects light from the first reflecting surface and guides light between the emitting surface and the second reflecting surface in a plane substantially parallel to the emitting surface, and the first reflecting surface reflects reflected light. There Ri consists curved emitting in the plane substantially parallel to said exit surface,
The display device according to claim 1, wherein the first reflecting surface is formed in a curved surface forming a part of a cylindrical surface by recessing a part of the display plate . The display device according to claim 1, wherein the second reflecting surface is inclined with respect to the emission surface . The display device according to claim 1, wherein the second reflection surface is formed on a diffusion surface that diffuses light .   The display device according to claim 1, wherein the incident surface is formed of a curved surface that covers the light source.   The display panel has an opening surrounded by the emission surface, and the light source, the incident surface, and the first reflection surface are provided at both ends of the opening. 5. The display device according to any one of 4.

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