JP5498248B2 - Illumination structure of display unit of operation panel of vehicle air conditioner - Google Patents

Description

  The present invention relates to an operation panel used in, for example, a vehicle air conditioner, and more particularly to a structure for illuminating a display unit that provides various information on the operation panel to a passenger.

  The control panel of the vehicle air conditioner illuminates a display unit that provides various information to passengers in order to ensure visibility when operating air conditioning equipment at night and in tunnels and to improve the design of the control panel. It is supposed to be. An example of a structure for illuminating such a display panel will be outlined. For example, as shown in Patent Document 1, a light source such as a white LED that emits white light and only light in a predetermined wavelength range among visible light is transmitted. It is the structure using the marking part to be made.

  Then, as shown in Patent Document 2, for example, when the first display emits light in red, the second display emits in green, and the third display emits in blue, the total of the emission colors of these displays In some cases, the first color filter that transmits only red light, the second color filter that transmits only green light, and the third color filter that transmits only blue light may be appropriately arranged in accordance with the number.

JP 2002-123197 A JP 2007-41171 A

  However, the wavelength range of visible light transmitted through the marking portion of Patent Document 1 is, for example, the red wavelength range because it has transmission distribution characteristics as shown in FIG. Since not only visible light but also a part of visible light in a wavelength range close to the red wavelength range such as orange and yellow is transmitted, if only a light source that emits white light is used, FIG. From the wavelength distribution of the white light as shown in c) and the characteristics of the marking portion shown in FIG. 7B, the light transmitted through the red marking portion is red light as shown in FIG. 7A. 110 and miscellaneous components 120 (120a to 120d) such as orange light and yellow light are mixed and turbid, and a red display may not be obtained with a desired vividness. Such turbidity of the luminescent color appears in the same way when only the light source that emits white light is used in the green marking portion and the blue marking portion.

  In this regard, in Patent Document 2, a configuration using a plurality of light sources capable of emitting colored light of different colors without using a light source that emits white light such as a white light emitting diode (LED), that is, as described above. For example, when the first indicator portion emits red light, the second indicator portion emits green light, and the third indicator portion emits blue light, red, green LED, and blue LED are displayed on these displays, respectively. By adopting a configuration in which light, green light, and blue light are irradiated through a color filter, each display is caused to emit light according to a desired color.

  However, as shown in Patent Document 2, when a plurality of LEDs having different emission colors corresponding to the total number of emission colors of the marking portion are used, the manufacturing cost of the operation panel becomes relatively high, The total installation area of the LEDs arranged on the board is also increased, and it is difficult to lay out other components arranged on the board.

  Therefore, the present invention can prevent turbidity in the emission color of each display unit while illuminating each display unit that emits a plurality of colors with a light source that emits light including a wide wavelength region such as white light. An object of the present invention is to provide an illumination structure for a display unit of an operation panel.

The lighting structure of the display unit of the operation panel of the vehicle air conditioner according to the present invention is the operation panel of the vehicle air conditioner having a plurality of display units for displaying information on the outside, and the plurality of display units are colored. Te, the emitting any color receiving predetermined length of visible light incident from a main light source arranged inside the operating panel, and emission colors of the other display unit of one display unit Further, an adjustment light source capable of emitting light that enhances the luminance and / or color of the display unit that needs adjustment among the display units is disposed inside the operation panel. The total number of the main light source and the adjustment light source is smaller than the total number of light colors emitted from the plurality of display units (claim 1). Here, the light emitted from the main light source is, for example, white light or yellow light, and the main light source is, for example, a white LED or a light bulb. The operation panel is for operating an air conditioner such as a vehicle. The display unit displays information providing means such as letters, numbers, figures, symbols, and other designs. The explanation of these lexical terms is the same in the following paragraphs described in the column of means for solving this problem.

Thereby, the brightness of the light that illuminates the predetermined display unit among the plurality of colored display units is insufficient, or the color of the color transmitted through the predetermined display unit among the plurality of colored display units Even if it becomes clear after the display unit has been assembled to the operation panel, an adjustment light source that can emit colored light that requires adjustment is arranged separately from the main light source. By turning on the light source, it is possible to prevent the brightness of the light from increasing or the color of the desired color from being enhanced and becoming vivid, and the color of the light transmitted through the color filter from becoming cloudy compared to the desired color. it can. Further, the plurality of display units are colored with different colors so that the emission color of one display unit and the emission color of the other display unit can be different from each other. Display that does not require adjustment of other brightness and / or hue, even if the brightness of the light emission color of the part is increased and the light is turned on or the output amount of visible light is increased to enhance the color of the desired color It is possible to eliminate the influence on the department.

The illumination structure of the display unit of the operation panel of a vehicular air conditioning apparatus according to the present invention, the operation panel of a vehicle air conditioner having a plurality of display unit for displaying information on the outside, the plurality of display portions, respectively It is colored and receives a predetermined length of visible light incident from a main light source disposed inside the operation panel, emits light in an arbitrary color, and emits light of one display unit and emission color of another display unit In addition, an adjustment light source that emits light that enhances the luminance and / or color of the display unit that needs to be adjusted among the display units is disposed inside the operation panel. The total number of the main light source and the adjustment light source is smaller than the total number of light colors emitted from the plurality of display units (claim 2).

As a result, it is necessary to adjust the luminance of light that illuminates a predetermined display unit among the plurality of colored display units and the color of the color that has transmitted through the predetermined display unit among the plurality of colored display units. However, since the display unit is configured to be able to arrange an adjustment light source that emits light that enhances the luminance and / or color of the display unit that requires adjustment, the display unit can easily The luminance of the display portion can be increased and / or the light transmitted through the color filter can be adjusted. Further, the plurality of display units are colored with different colors so that the emission color of one display unit and the emission color of the other display unit can be different from each other. Display that does not require adjustment of other brightness and / or hue, even if the brightness of the light emission color of the part is increased and the light is turned on or the output amount of visible light is increased to enhance the color of the desired color It is possible to eliminate the influence on the department.

And in the illumination structure of the display part of the operation panel of the vehicle air conditioner according to the first and second aspects, the number of light sources is less than the total number of light colors emitted from all colored display parts. Therefore, the number of light sources is reduced as compared with the case where the total number of colors of the display unit and the number of light sources are the same, and the luminance and color tone of the colored light emitted from the display unit are sufficient for the desired one. Therefore, the productivity of the entire operation panel is improved.

As described above, according to the first or second aspect of the present invention, the luminance of the colored light transmitted through the predetermined display unit among the plurality of colored display units is insufficient or the color of the color. Even if it turns out that the taste is cloudy after assembling the display unit on the operation panel, arrange an adjustment light source that can emit the same colored light as the color of the display unit you want to adjust separately from the main light source Therefore, adjustment of luminance and color can be performed with this adjustment light source. Therefore, adjustment work is simple, and replacement and remanufacturing of the display unit can be eliminated. Further, according to the invention described in claim 1 or claim 2, the plurality of display units are separated from each other so that the light emission color of one display unit and the light emission color of another display unit can be different. As the adjustment light source, even if the brightness of the light emission color of a certain display unit is increased and the desired color is lit up or the output amount of visible light is increased Further, it is possible to eliminate the influence on the display unit that does not require adjustment of other luminance and / or hue.

Furthermore, according to the invention described in claim 1 or claim 2 , the total number of colors of the display unit is obtained by reducing the number of light sources from the total number of light colors emitted from all the colored display units. The brightness and color of the colored light emitted from the display unit can be adjusted to the desired level regardless of the fact that the number of light sources is reduced compared to the case where the number and the number of light sources are the same. , Productivity as an operation panel can be improved.

FIG. 1A is a schematic view showing a part of a case of an operation panel using a seesaw type switch, and FIG. 1B is a seesaw type from a part of the case of the operation panel of FIG. It is the schematic which shows the state which removed the operation knob of the switch. FIG. 2 is an explanatory view showing a state where the operation knob of the seesaw type switch is viewed from the back side. FIG. 3 is a schematic diagram illustrating a configuration in which three display units of a panel are illuminated with two light sources, ie, a main light source and an adjustment light source, as an example of the present invention. FIG. 4A is an explanatory diagram illustrating a state in which a desired color tone is enhanced even after transmission through the color filter by the adjustment light source, and FIG. 4B is an explanatory diagram illustrating transmission characteristics of the color filter. FIG. 4C is an explanatory diagram showing the output distribution of light from the main light source and the adjustment light source. FIG. 5 is a schematic view showing a part of a case of an operation panel using a rotary switch. FIG. 6 is a schematic view showing a part of the case of the operation panel in FIG. 5 as viewed from the back side with the operation knob of the rotary switch removed. FIG. 7A is an explanatory diagram showing the turbidity of the color after passing through the color filter when the adjustment light source is not used, and FIG. 7B is an explanatory diagram showing the transmission characteristics of the color filter. (C) is explanatory drawing which showed the output distribution of the light from a main light source.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1A and 1B, for example, a part of a case component 1 of an operation panel of a vehicle air conditioner is shown. As shown in FIG. 1B, this case component 1 is shown. The frame 3a is disposed around the through-hole 2 and is made of a light-shielding material or subjected to light-shielding processing such as masking. For example, as shown in FIG. 3, the frame 3 a reaches a substrate 4 having a main light source 12 and an adjustment light source 13 which will be described later, and prevents light from these light sources 12 and 13 from being inadvertently leaked. ing.

  As shown in FIGS. 1A and 3, a seesaw type switch 5 including an operation knob 6 and the like is assembled to the frame 3 of the case component 1. However, since the seesaw type switch 5 itself is a known one, a specific configuration other than the operation knob 6 is omitted in these drawings. In such a seesaw type switch 5 as well, by operating the operation knob 6 to be tilted, for example, in a vehicle air conditioner, various controls such as ON / OFF of an AUTO air conditioner and ON / OFF of an air conditioner such as a blower are performed. Is possible.

  In this embodiment, as shown in FIG. 1, the operation knob 6 forms a circular bulge portion 7 on one side in the longitudinal direction of the rectangular surface 6 a, and the outer surface of the bulge portion 7. An upward triangular display portion 8 is arranged on the other side, and a circular bulging portion 9 is formed on the other side in the longitudinal direction of the rectangular surface 6 a, and a downward triangular shape is formed on the outer surface of the bulging portion 9. The display unit 10 is arranged, and a circular display unit 11 is arranged on the outer surface of the portion between the display units 8 and 10 in the rectangular surface 6a. Further, for example, the display unit 8 is colored red, the display unit 10 is colored blue, and the display unit 11 is colored yellow or white so that the respective display units 8, 10 and 11 can be identified by visual recognition.

  Further, the operation knob 6 is formed, for example, by forming a portion having the surface 6a with a translucent material, while coating the surface 6a with a light-shielding paint or the like, leaving the display portions 8, 10, and 11. Alternatively, by attaching a light-shielding film to the surface 6 a, only the range of the display units 8, 10, and 11 has translucency, and a red color filter is disposed on the display unit 8. The display unit 10 is provided with a blue color filter, and the display unit 11 is provided with nothing or a white or yellow color filter. As shown in FIG. 2, a frame body fitting portion 3b for fitting with the frame body 3a is formed on the back side of the operation knob 6, and the operation knob 6 is provided on the seesaw type switch 5 shown in FIG. As shown in FIG. 3, a closed space defined by the frame 3 a, the substrate 4, and the operation knob 6 is formed. When the main light source 12 that emits visible light having a wide wavelength range such as white is provided as a backlight from the side opposite to the outer surface with respect to the surface 6 a of the operation knob 6, visible light emitted from the main light source 12 is emitted. Since the light is transmitted toward the surface 6a and the light is transmitted through the display units 8, 10, and 11, the positions of the display units 8, 10, and 11 can be visually recognized by the emitted light or colored light even at night or in a tunnel. It is. For example, an LED chip is used as the main light source 12, but other light sources such as an existing white light bulb may be used.

  Incidentally, as shown in FIG. 3, the case component 1 of the operation panel also has an adjustment light source 13 in addition to the main light source 12 that emits visible light having a wide wavelength range such as white. For example, an LED chip is used as the adjustment light source 13, and a light source capable of emitting visible light only in a specific wavelength region such as a red region, a blue region, or a green region is used.

  Furthermore, the total number of the adjustment light sources 13 and the main light sources 12 is smaller than the total number of colors of the display unit. That is, in this embodiment, when the light emission color of the display unit 8 is red, the light emission color of the display unit 10 is blue, and the light emission color of the display unit 11 is white or yellow, the total number of colors of the display unit is 3. Therefore, the number of the adjustment light sources 13 is one so that the total number of the main light sources 12 and the adjustment light sources 13 is two. On the other hand, the adjustment light source 13 can be turned ON / OFF so that it does not emit light when adjustment is not necessary.

  In the above configuration, when the seesaw type switch 5 is assembled to the case component 1 of the operation panel and the light emission test of the display units 8, 10, 11 is performed, the luminance of red emitted from the display unit 8 is low and dark. When it becomes clear that it becomes white turbid and pink, etc., a light source that emits a red wavelength region such as a red LED is mounted on the substrate 4 as the adjustment light source 13 to adjust the lighting condition.

  As a result, as shown in FIG. 4B, as the transmission characteristics of the color filter, not only the desired color (wavelength) 110 but also the miscellaneous component 120, that is, the color (wavelength) of the region that approximates the desired color. Even when part of the visible light is transmitted, as shown in FIG. 4C, the output distribution 100 of visible light having a wide wavelength range such as white emitted from the main light source 12, and A sum 102 with the output distribution 101 of visible light in the red region emitted from the adjustment light source 13 is obtained. Therefore, as shown in FIG. 3 (a), not only the desired color (red in this case) 110 but also the visible light as the miscellaneous component 120 of the color in the region similar to this is transmitted. Since the amount of visible light output 102 in the region increases as shown by the sum of the output distributions of the visible light mainly emitted from the main light source and the adjustment light source in FIG. 4C, the desired light transmission through the color filter is achieved. The ratio of the color 110 can be increased to suppress the color turbidity. In addition, the luminance can be increased.

  Furthermore, since the total number of the light sources 12 and 13 is smaller than three, which is the total number of light colors emitted from all the display units 8, 10, and 11, the total number of colors and the number of light sources that the display unit has. Since the number of light sources is reduced as compared with the case of making them the same, the productivity of the entire operation panel is improved.

  Incidentally, as a means for adjusting the luminance of the desired color and the vividness of the color, it is possible to appropriately adjust the amount of current input to the adjustment light source 13 and adjust the emission amount from the adjustment light source 13. By having such an adjusting means, it is possible to easily obtain a desired state as compared with a case where a color filter with a corrected light transmittance is re-produced to adjust brightness and color vividness.

  In the example of the case component 1 of the operation panel of the vehicle air conditioner shown so far, the seesaw type switch 5 is used, and the operation knob of the seesaw type switch 5 which is different from the case component 1 is used. Although the case where the display units 8, 10, 11 are provided in FIG. 6 has been described, the present invention is not necessarily limited thereto.

  Hereinafter, an embodiment in which the rotary switches 14, 15, and 16 are used and the outer surface of the case 19 of the case component 1 has 26 to 48 will be described with reference to FIGS. 5 and 6. However, the same components as those in the previous embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The rotary switches 14, 15, and 16 are known per se, and the operation knobs 23, 24, and 25 shown in FIG. 5 are mounted in the through holes 20, 21, and 22 of the case 19 shown in FIG. It is basically composed by doing. Here, the rotary switch 14 is for switching the air conditioning mode to one of a vent mode, a bi-level (B / L) mode, a foot mode, a differential foot (D / F) mode, and a differential mode. 15 is for increasing / decreasing the rotational speed of the blower in the range from 0 to 4, and the rotary switch 16 is for adjusting the temperature of the blown air. The push-type switch 17 is for setting the differential mode, and the push-type switch 18 is for turning on / off the AUTO air conditioner.

  In the case 19, display portions 26 to 34 showing the modes and between the modes are displayed on the periphery of the circular base of the operation knob 23 of the rotary switch 14. In the region around the circular base of the knob 24, the air blower and the display portions 35 to 40 indicating the rotation speed of the air blower are represented, and further around the circular base of the operation knob 25 of the rotary switch 15. Display portions 41 to 48 that simply indicate the minimum value of the set temperature, the maximum value of the set temperature, and the value of the set temperature in the meantime are shown in the region. In this embodiment, the rotary switch 16 has the display parts 41 to 44 colored blue and the display parts 45 to 48 colored red so that the distinction between heating and cooling can be visually recognized. Yes. In this embodiment, the display units 26 to 34 of the rotary switch 14 and the display units 35 to 40 of the rotary switch 15 are basically left to the color of visible light transmitted through the color filter.

  Further, as shown in FIG. 6, the case 19 has a recessed portion at a portion around the circular base portion of the operation knobs 23, 24, 25 of the rotary switches 14, 15, 16 as viewed from the inner surface side. 49, 50 and 51 are formed in an annular shape. Further, in this embodiment, the recessed portion 51 is formed with a partition wall 52 to divide the recessed portion 51 into a recessed portion 51a and a recessed portion 51b.

  The case 19 is formed of, for example, a translucent material at least on the peripheral surfaces of the through holes 20 to 22 of the recessed portions 49 to 51, like the surface 6a of the operation knob 6 of the previous embodiment. Then, the display portions 26 to 48 are left by coating the recess portions 49 to 51 with a light-shielding paint or the like, or attaching a light-shielding film to the recess portions 49 to 51. Only the range of has translucency. Further, a blue color filter is disposed on the display units 41 to 44, a red color filter is disposed on the display units 45 to 48, and a desired color is displayed on the display units 26 to 34 and the display units 35 to 40. The color filter of the color is arranged. Thereby, when the main light source 12 that emits visible light having a wide wavelength range such as white is arranged as a backlight from the side opposite to the outer surface with respect to the peripheral surfaces of the through holes 20 to 22 of the recessed portions 49 to 51 of the case 19. As in the case shown in FIG. 3, visible light emitted from the main light source 12 is irradiated toward the peripheral surfaces of the through holes 20 to 22 of the recessed portions 49 to 51, and the light passes through the display portions 26 to 48. Therefore, it is possible to visually recognize the positions of the display units 26 to 48 by the emitted light or colored light at night or in a tunnel.

  Here, for example, when it is necessary to adjust the luminance or color turbidity of the display units 45 to 48 in which the red color filter is arranged, the adjustment light source 13 and the position where the display units 45 to 48 can be irradiated. A red LED or the like is mounted. As a result, as shown in FIG. 3A, the output amount 102 of the visible light in the red region increases, so the amount and ratio of the desired color 110 in the visible light transmitted through the display units 45 to 48 is increased. It is possible to eliminate color blur due to insufficient brightness or turbidity.

  Even if the setting is made so that the visible light of the red wavelength emitted from the red LED reaches not only the display units 45 to 48 but also the display units 41 to 44 where the blue color filter is arranged. The visible wavelength of the red wavelength emitted from the red LED does not affect the luminance and color of the display units 41 to 44. This is because the blue color filter has a characteristic of transmitting only the blue wavelength and a part of the wavelength in the vicinity thereof. Even when the blue color filter is irradiated with the red wavelength, the red wavelength is not affected. This is because the light does not pass through the blue color filter.

  By the way, for example, in the rotary switch 14, when the total number of luminescent colors transmitted through the display units 26 to 34 is four, for example, two adjustment light sources in addition to the main light source are provided on the substrate. The adjustment light source can suppress the turbidity of the color transmitted through the color filter and can also increase the luminance.

DESCRIPTION OF SYMBOLS 1 Case component 2 Through-hole 3a Frame body 3b Frame body fitting part 4 Board | substrate 5 Seesaw-type switch 6 Operation knob 7 Expansion part 8 Display part 9 Expansion part 10 Display part 11 Display part 12 Main light source 13 Adjustment light source 14 thru | or 16 Rotary switches 17 and 18 Push type switches 19 Cases 20 to 22 Through holes 23 to 25 Operation knobs 26 to 48 Display units 49 to 51 Recessed portions 52 Partition walls 100 Output distribution of visible light mainly emitted from the main light source 101 Adjustment Output distribution of visible light mainly emitted from the light source 102 Sum of output distributions of visible light emitted mainly from the main light source and the adjustment light source 110 Desired color 120 Miscellaneous components

Claims (2)

In an operation panel of a vehicle air conditioner having a plurality of display units for displaying information on the outside,
Each of the plurality of display units is colored and receives a predetermined length of visible light incident from a main light source disposed inside the operation panel, emits light in an arbitrary color, and is colored. Can be different from the emission color of other colored displays,
Further, an adjustment light source capable of emitting light that enhances luminance and / or color of a display unit that needs to be adjusted among the display units is disposed inside the operation panel, and the main light source and the adjustment are arranged. An illumination structure of a display unit of an operation panel of a vehicle air conditioner, wherein a total number of light sources is smaller than a total number of light colors emitted from the plurality of display units .
In an operation panel of a vehicle air conditioner having a plurality of display units for displaying information on the outside,
Each of the plurality of display units is colored and receives a predetermined length of visible light incident from a main light source disposed inside the operation panel, emits light in an arbitrary color, and is colored. Can be different from the emission color of other colored displays,
Further, inside the operating panel, it can be disposed an adjusting light source which emits light to enhance the brightness and / or color of the display unit that requires adjustment of the display unit, the adjustment to the main light source An illumination structure of a display unit of an operation panel of a vehicle air conditioner, wherein a total number of light sources is smaller than a total number of light colors emitted from the plurality of display units .

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