JP5921501B2 - Display device and air conditioner indoor unit provided with the same - Google Patents

Description

  The present invention relates to a display device that has a display panel made of resin and that clearly displays an operating state and the like, and an indoor unit of an air conditioner including the display device.

  As a means for displaying the operation state of an electric appliance or the like, generally a display window that irradiates light of a display element such as an LED or a display device using characters, symbols, etc. representing operation details is suitable for the electric appliance main body. It is arranged and displayed at the location. And various devices are made | formed about the visibility of the display apparatus which concerns.

In this display device, a display sheet of the display device is brought into close contact with the back side of a resin display panel provided in an electric device, and light emitted from the display device is transmitted through the display panel to display operation information or the like on the surface of the display panel. Is.
Conventionally, the display panel is a transparent resin panel, and a colored layer capable of transmitting light is applied to the back surface thereof by painting or printing, and light from the display device is transmitted through the colored layer to display information on the front side of the display panel. Is disclosed (for example, see Patent Document 1).

JP 2009-79787 A

In such a conventional display device, when painting or printing on a transparent resin panel, since there are painting and printing processes, the productivity is poor and the parts cost is high.
Therefore, a display device that allows light to pass through a display panel molded with a colored resin material without painting or printing is considered, but the colored layer (part thickness) is thicker than painting or printing, There was a problem that the light of the apparatus was difficult to transmit.

In order to facilitate the transmission of light from the display device, it is possible to partially provide a thin portion where the colored layer of the display panel is thinly formed, but its range is limited in terms of moldability by resin molding and product strength.
Then, as shown in FIG. 10, the entire display device 11 cannot be accommodated in the thin portion 1c of the display panel 1a, and the display sheet 15 and the thin portion 1c of the display panel 1a are brought into contact with the standard thick portion 1d. There is a problem that a gap shown in the figure is formed between them, and the light from the LED 13a of the display device 11 is diffused in this gap, thereby blurring the display on the display panel 1a.

  The present invention has been made to solve the above problems, and a display device that enables clear display on the front surface of a display panel molded with a colored resin material, and an air conditioner including the display device The purpose is to provide indoor units.

The present invention is a display device that has been made to solve the above-described problems, and is formed of a colored resin capable of transmitting light, and has a standard thick portion and a thin thickness that is concave on the back surface and is thinner than the standard thick portion. A display panel having a display panel, a printing layer that does not transmit light, and a non-printing portion that transmits light, and is installed on the back side of the display panel and projects light onto the display panel a display device comprising a body, a display sheet comprises a base surface printing layer is formed, it is formed to protrude from the base surface, partially protruding portion provided with a non-printing portion in the printing layer In the thin part of the display panel, the protrusion of the display sheet comes into contact with or is close to the light, and the light transmitted through the non-printing part of the protrusion is displayed on the surface of the display panel.

  According to the display device according to the present invention, the protrusion of the display sheet is in contact with or close to the thin portion of the display panel, so that the light irradiated from the non-printing layer provided on the protrusion is the display sheet and the display panel. The light is incident on the back surface of the display panel without diffusing between and a clear display on the front surface of the display panel formed of the colored resin material.

It is a disassembled perspective view which shows the whole indoor unit of the air conditioner in embodiment of this invention. It is an arrangement plan of a display device of an air harmony machine in an embodiment of the invention. It is an attachment figure of the display apparatus of the air conditioner in embodiment of this invention. It is an attachment figure of the display body of the air conditioner in the embodiment of the present invention. It is sectional drawing showing the contact of the display body and display panel of the air conditioner in embodiment of this invention. It is a disassembled perspective view of the display body of the air conditioner in the embodiment of the present invention. It is a front view of the display sheet of the air conditioner in the embodiment of the present invention. It is explanatory drawing of the protrusion structure of the display sheet of the air conditioner in embodiment of this invention. It is sectional drawing showing the relationship between the display panel thin part and display sheet protrusion part of the air conditioner in embodiment of this invention. It is sectional drawing of the conventional display panel and a display apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the display apparatus of an air conditioner by embodiment described below. Moreover, in the following drawings, the relationship of the size of each component may be different from the actual one.

1 to 5, a basic configuration of a display device for an indoor unit of an air conditioner according to an embodiment will be described.
Drawing 1 is an exploded perspective view showing the whole indoor unit of the air harmony machine in an embodiment.
FIG. 2 is a layout diagram of the display device of the air conditioner according to the embodiment.
FIG. 3 is an attachment diagram of the display device of the air conditioner in the embodiment.
FIG. 4 is an attachment diagram of the display body of the air conditioner in the embodiment.
FIG. 5 is a cross-sectional view illustrating the contact between the display body and the display panel of the air conditioner according to the embodiment.

  As shown in FIG. 1, the indoor unit includes a base 7, a heat exchanger 5, a filter cleaning unit 8, a blower fan 6, an electrical component box 4, a drain pan assembly 3, a housing 2, and an open / close Or it has the front design panel 1 which can be removed. The heat exchanger 5, the blower fan 6, the electrical component box 4, and the drain pan assembly 3 are mounted on the base 7. The front design panel 1 and the filter cleaning unit 8 are fixed to the housing 2, and the housing 2 is fixed to the base 7 with screws.

  When the blower fan 6 rotates in this indoor unit, indoor air is sucked from the upper surface of the indoor unit, heat is exchanged by the heat exchanger 5 to generate cold air or warm air, and the cold air or warm air is drain pan provided with a vertical air direction adjustment plate. The air is blown into the room through the assembly 3.

[Front design panel]
As shown in FIG. 2, the front design panel 1 is provided on the front surface of the housing 2 so as to be openable and detachable. The front design panel 1 is formed of a translucent colored resin material (for example, ABS, polyethylene, polycarbonate, etc.).
As shown in FIG. 5, the front design panel 1 includes a main panel 1b and a display panel 1a below the main panel 1b.

[Display device]
As shown in FIG. 2, the display device 10 is preferably disposed on the lower side of the front surface side of the housing 2. As shown in FIG. 3, the display device 10 is an integrated display unit in which a sensor 10b portion is arranged at the center, and a display body 11 representing the operating state of the air conditioner is arranged on the side thereof. . The display device 10 is located on the back surface of the display panel 1 a attached to the front design panel 1 and is mounted on the air conditioner so that the display body 11 of the display device 10 protrudes from the frame 2 a of the housing 2. ing. 3 and 4, the display device 10 includes a base member 10a on which the display body 11 is placed.
The display device 10 is in a state in which a required display is turned on or blinked so as to inform the user of the operation state during the operation of the air conditioner, and light is irradiated from the back side of the front design panel 1 to the surface of the display panel 1a. The display is configured to transmit light. When the operation is stopped, the display is turned off and nothing is displayed on the display panel 1a.

[Display]
The structure and attachment of the display body 11 will be described.
FIG. 6 is an exploded perspective view of the display body 11 of the air conditioner according to the embodiment.
As shown in FIG. 6, the display body 11 is mainly composed of a display sheet 15, a substrate holder 14, and a substrate 13.
As shown in FIGS. 3 to 5, the display body 11 is fixed to the base member 10 a and is further attached to the filter cleaning unit 8. Further, a spring 12 is disposed between the base member 10a and the display body 11, and the display body 11 is pressed against the front side, that is, the back surface of the display panel 1a. In this state, the light irradiated from the display body 11 is incident on the back surface of the display panel 1a, transmits through the display panel 1a, and can perform a required display on the surface of the display panel 1a.

[substrate]
As shown in FIG. 6, the board 13 is a printed board on which the LEDs 13 a are mounted, and is fixed in the board holder 14. The LED 13a is controlled so that what is necessary for display lights up or blinks.
[Display sheet]
FIG. 7 is a front view of a display sheet of the air conditioner according to the embodiment.
FIG. 8 is an explanatory diagram of the protruding structure of the display sheet of the air conditioner according to the embodiment.
The display sheet 15 is obtained by printing on a base material such as PET, and is obtained by printing outlines such as numbers, symbols, and illustrations projected on the back surface of the display panel 1a. As shown in FIG. 7, for example, the display content is a numerical display of room temperature, set temperature, humidity, etc. (see FIG. 7A), a display for lighting the wind direction setting position (see FIG. 7B), The display (refer FIG.7 (c)) etc. which represent an eco-driving degree with a bar graph etc. can be considered.

FIG. 8A is a cross-sectional view of the display sheet 15.
FIG. 8B is a front view of the display sheet 15.
FIG. 8C is a front view showing the area of the protruding portion 15 c of the display sheet 15.
As shown in FIG. 8A, the display sheet 15 is formed with a base surface 15b and a protruding portion 15c protruding from the base surface 15b on the front side of the indoor unit with a stepped portion as a boundary.
A printed layer that does not transmit light is formed on the base surface 15b, and a non-printed portion 15a that allows light from the substrate 13 to pass through the printed layer is partially formed in the printed layer on the protruding portion 15c. Yes.
The non-printing portion 15a is in the form of characters and symbols representing display contents.
In other words, the display sheet 15 is formed such that a portion partially including the non-printing portion 15a with respect to the printing layer is a protruding portion 15c pushed out from the base surface 15b to the front side of the indoor unit.
The display sheet 15 is attached to the front end surface 14b on the front side of the substrate holder 14 with an adhesive.

[Substrate holder]
The substrate holder 14 is formed in a box shape from a resin material such as ABS, and a through hole 14a is opened at a position where the LED 13a as a display element is inserted. The through hole 14 a also corresponds to the position of the non-printing portion 15 a of the display sheet 15.
That is, the LED 13a, the through-hole 14a, and the non-printing portion 15a of the display sheet 15 are in a positional relationship arranged in the front-rear direction.
Since the display device 10 is configured as described above, the light emitted from the LED 13a of the substrate 13 can be transmitted through the non-printing portion 15a of the display sheet 15 and can reach the back side of the display panel 1a.

Next, the structure in which the display body 11 is housed in the front design panel 1 will be described.
As shown in FIG. 4, springs 12 are disposed on the left and right sides between the substrate holder 14 of the display body 11 and the base member 10a. The stroke of the spring 12 has a length that can sufficiently absorb the warpage of the display panel 1a and the variation in dimensions when the display device 10 is assembled.
Therefore, when the front design panel 1 is open, the substrate holder 14 is biased forward by the spring 12 in a state of slightly protruding from the front surface of the housing 2. When the front design panel 1 is closed, the substrate holder 14 is pressed. Is pressed against the back surface of the display panel 1 a by the spring 12 through the display sheet 15.

  In the mounting structure of the display body 11, the substrate holder 14 can move in a direction inclined several degrees from the axial direction of the spring 12. Therefore, the substrate holder 14 can be tilted in the left-right and up-down directions in addition to the movement in the front-rear direction by the spring 12.

  Since the front design panel 1 is formed of a resin material, warping may occur to some extent. In addition, variations in dimensions may occur in assembly when the display body 11 is assembled in the display device 10, attachment to the housing 2, and the like. If the gap between the display panel 1a and the display sheet 15 is about 1 mm or more due to such warpage of the front design panel 1 or assembly of the display device 10, the display on the surface of the display panel 1a is blurred. End up.

Accordingly, the spring 12 absorbs the warp and variations that cause the above. That is, the front end surface 14b of the substrate holder 14 is protruded from the front surface of the housing 2 by the spring 12, and the substrate holder 14 can be tilted in the left and right and up and down directions.
In this way, when the display body 11 is pressed against the back surface of the display panel 1a, the attitude of the display body 11 can be finely adjusted, so that the display sheet 15 of the display body 11 and the display panel 1a can be brought into close contact with each other. The gap between the two members can be reduced.

[Display panel]
FIG. 9 is a cross-sectional view illustrating the relationship between the thin portion of the display panel of the air conditioner and the protruding portion of the display sheet in the embodiment.
Fig.9 (a) is the perspective view which looked at the display panel 1a from the front side of the indoor unit.
FIG. 9B is a cross-sectional view of the display panel 1a of FIG.
FIG. 9C is a cross-sectional view of the display panel 1a of FIG.
The display panel 1a is formed of a translucent colored resin material (for example, ABS, polyethylene, polycarbonate, etc.) as described above.
The cross-sectional shape is formed by the standard thick portion 1d and the thin portion 1c as shown in the cross-sectional views of FIGS. 9B and 9C.
The thin portion 1c is partially provided as a concave shape on the back surface of the display panel 1a in order to transmit light from the display body 11 provided on the back surface side of the display panel 1a to the front surface side.

Here, the structure which adhere | attaches the display sheet 15 of the display body 11 on the back surface side of the display panel 1a is demonstrated.
As shown in the cross-sectional views of the display panel 1a in FIGS. 9B and 9C, the display panel 15 is configured so that the projection 15c of the display sheet 15 is fitted to the thin portion 1c of the display panel 1a. . Further, the base wall 15b around the display sheet 15 is in contact with or close to the standard thick portion 1d of the display panel 1a.
With this configuration, the light emitted from the LED 13a of the substrate 13 passes through the non-printing portion 15a of the protruding portion 15c, passes through the thin portion 1c of the display panel 1a, and reaches the surface of the display panel 1a.

Thus, since the protrusion part 15c of the display sheet 15 contacts or approaches the thin part 1c of the display panel 1a, the light irradiated from the non-printing part 15a provided in the protrusion part 15c is displayed on the display sheet 15. It becomes possible to enter the back surface of the display panel 1a without diffusing with the panel 1a.
Therefore, numbers, symbols, illustrations, and the like displayed on the surface of the display panel 1a are clearly displayed without blurring the outline.
Further, the light is transmitted through the thin portion 1c which is thinner than the standard thick portion 1d, so that the attenuation rate of the light amount is reduced, and a clearer display can be realized.

Further, as described above, the display body 11 is pressed against the back surface of the display panel 1a by the spring 12 so that the posture of the display body 11 can be changed, so that the protruding portion 15c of the display sheet 15 and the thin portion 1c of the display panel 1a are brought into close contact with each other. be able to.
Therefore, a clearer display is possible by the synergistic effect of these configurations. In addition, since the process of painting or printing on the display panel 1a is unnecessary, cost reduction can be realized.

  In the said embodiment, although the example which arrange | positions the display apparatus 10 in the indoor unit of an air conditioner was shown, it is employable for various products which shape | molded the surface of the display part with colored resin. For example, the use of home appliances such as a washing machine, a refrigerator, and a vacuum cleaner, and an electric appliance having a display panel is not limited to this embodiment.

  DESCRIPTION OF SYMBOLS 1 Front design panel, 1a Display panel, 1b Main panel, 1c Thin part, 1d Standard thickness part, 2 Case, 2a Frame, 3 Drain pan assembly, 4 Electrical component box, 5 Heat exchanger, 6 Blower, 7 Base, 8 Filter cleaning unit, 10 Display device, 10a Base member, 10b Sensor, 11 Display body, 12 Spring, 13 Substrate, 13a LED, 14 Substrate holder, 14a Through hole, 14b Front end surface, 15 Display sheet, 15a Non Printing part, 15b base surface, 15c protruding part.

Claims (6)

A display panel formed of a colored resin capable of transmitting light, and having a standard thick part, and a thin part having a concave shape on the back surface and being thinner than the standard thick part;
A printing layer which does not transmit light, and a display body including a non-print portion which light is transmitted, the display sheet having, for projecting light to the display panel installed on the back side of the display panel,
A display device provided with,
The display sheet comprises a base surface on which the print layer is formed, is formed to protrude from the base surface, have, a protrusion having a part on the non-printing portion in the printing layer,
The thin portion of the display panel is in contact with or close to the protrusion of the display sheet, and light transmitted through the non-printing portion of the protrusion is displayed on the surface of the display panel. Display device.   The display device according to claim 1, wherein the base surface of the display sheet is in contact with the standard thick portion of the display panel.   The display device according to claim 1, wherein the protruding portion of the display sheet is in contact with the thin portion of the display panel. The display device has a base member,
The display according to any one of claims 1 to 3, wherein a spring is provided between the display body and the base member to urge the display body toward the back surface of the display panel. apparatus. The display body includes a substrate provided with a light emitting element, and a substrate holder for fixing the substrate and attaching the display sheet,
The substrate holder includes a through hole in which the light emitting element is accommodated,
The display device according to claim 1, wherein the non-printing portion of the display sheet is disposed at a position facing the through hole.   An indoor unit of an air conditioner comprising the display device according to any one of claims 1 to 5.

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