JP2005173309A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which is constructed by using a liquid crystal display device, has simple constitution, is easy-to-understand and is related to the display device of an electric appliance such as a burner. <P>SOLUTION: A backlight means is constituted of an entire surface lighting backlight means and a partial surface lighting backlight means. Background colors of divided sections of the liquid crystal display device 20 can be partially changed from one another. By changing the color of the backlight means of the section corresponding to the content displayed on the liquid crystal display device 20, the background color of the liquid crystal display device 20 is changed in accordance with the content to be displayed. Consequently the content displayed on the liquid crystal display device 20 is distinguished by the background color and the display content is made easily recognizable by blinking the backlight means on the periphery of a part of the liquid crystal display device 20 expressing the content to attract attention while the backlight means on the part expressing the content is left turned on, and an easy-to-understand display is produced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a display device for an electric appliance such as a combustor configured using a liquid crystal display.

  2. Description of the Related Art Conventionally, display devices for electric appliances require a large amount of display information to display various display contents, and fluorescent display tubes and liquid crystal displays are often used.

  As a conventional display device for combustors such as oil fan heaters, an LED is arranged near various operation switches provided in the operation unit, and this LED is lit or blinked, so that the operation content and operation state Was to be displayed. However, in recent years, the function of the combustor has increased, and when it is attempted to display the function, the LED lighting display cannot be fully supported. Therefore, in order to solve this problem, a display using a fluorescent display tube or a liquid crystal display has become mainstream as a display device for a combustor.

  When this fluorescent display tube or liquid crystal display is used, the display unit is concentrated in one place, so that it can be compactly accommodated and the space of the operation unit can be used effectively, enabling downsizing and connection with the control unit. There is an advantage that can be simplified. Furthermore, since the fluorescent display tube and the liquid crystal display can display the operation content and the operation state by displaying characters and symbols as compared with the conventional LED lighting method, the display device of the recent combustor having many functions It is the best one.

  However, a combustor such as an oil fan heater is usually not close to the user, and air conditioning control of the entire room is usually performed. In this case, in a display device in which a large amount of display content is included in a compact liquid crystal display as described above, each display segment must be made small, so it is not possible to confirm the detailed display content from a remote location. Therefore, various improvements have been made (for example, see Patent Document 1).

  FIG. 4 is a block diagram of a conventional combustor described in Patent Document 1, and FIG. 5 is a flowchart showing the operation of a display comparison / determination unit (not shown) in the control unit 2 of the combustor. A conventional display device for a combustor such as a petroleum fan heater described in Patent Document 1 will be described with reference to FIGS. 4 and 5. Based on signals from the operation unit 1 that performs operation instructions and various settings, the control unit 2. Is configured to control the operation of the device, and the display unit 3 displays the contents of the operation state by the control unit 2. In addition, the combustion unit 4 of the device includes a burner and a convection fan, and the control unit 2 controls the operation unit according to signals from a room temperature sensor 5 that detects room temperature and an oil level sensor 6 that detects the presence or absence of kerosene. In accordance with the operation instruction and various settings from 1, the burner and the convection fan in the combustion unit 4 are controlled to have a predetermined combustion amount, and the current operation state is displayed on the display unit 3.

  The operation of the display device will be described. It is assumed that the backlight color is three colors of “red”, “green”, and “orange”, and the switching condition between “green” and “orange” is determined by the relationship between the room temperature and the set temperature. Further, “red” is a color that lights up in preference to all, and is a color for notifying that combustion will soon stop.

  If the operation switch is OFF, the backlight is turned off (step 19). If the operation switch is ON, a condition determination for determining the backlight color is performed according to a preset backlight color switching condition. The combustion control of the combustion unit 4 is performed so that the temperature set by the user through the operation unit 1 is performed, and the air conditioning of the room is controlled.

  At this time, if the signal from the oil level sensor 6 is oiled and not before the three-hour fire extinguishing notice and not before ten minutes before the fire extinguishing by the timer combustion, the set temperature set in the operation unit 1 and the room temperature sensor 5 The backlight color is determined by the temperature. That is, if “indoor temperature ≧ set temperature”, the backlight turns on “green” (step 17). If “room temperature <set temperature”, the backlight turns on “orange” (step 18).

Here, the “orange” color is realized by simultaneously lighting the “green” and “red” light sources, and the third color is realized by simultaneously lighting the two color light sources. The state of the combustor can be expressed in three colors without the need for a color light source and without cost. Even from a remote location, the operating state can be confirmed simply by checking the color of the backlight, and an easy-to-use combustor display device can be realized.
JP 2003-185135 A

  In the conventional configuration, the display unit 3 uses a liquid crystal display having a backlight, and the backlight switches between two or more colors, and performs “strong combustion”, “weak combustion”, “thermo OFF”, “energy saving operation”. ”,“ 3 hours prior to fire extinguishing ”,“ timer operation ”,“ refueling ”, etc. It is expressed by switching the color of the backlight of the liquid crystal display that is displayed according to the operating state peculiar to the combustor. Since the entire liquid crystal display is expressed with one color by changing the backlight color, there is a problem that the display content can always correspond to only one event corresponding to the color.

  In other words, change the color of the backlight in response to “strong combustion”, “weak combustion”, “thermo OFF”, “energy saving operation”, “three-hour pre-fire warning”, “timer operation”, “refueling” Therefore, there is a problem that superimposed expressions such as “strong combustion”, “energy saving operation”, and “3 hours prior to fire extinguishing” cannot be superimposed.

  Even for colors that call attention to ordinary people, such as red, red and other colors appear gray for older people and people with color weakness, and if the background color is red, there is a difference between the letter and the background. There was a drawback that it was difficult to understand.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an easy-to-understand display device with a simple configuration.

  In order to solve the above-described conventional problems, the display device of the present invention displays an operation unit that performs operation instructions and various settings, a control unit that controls operation according to instructions from the operation unit, and an operation state by the control unit. A display unit formed of a liquid crystal display having a backlight unit is provided, and the backlight unit illuminates substantially the entire surface of the liquid crystal display unit through a light guide plate by arranging a side LED on a side of the liquid crystal display unit. Liquid crystal with backlighting means arranged on the back side through a small hole part arranged in the holder that supports the liquid crystal display and the light guide plate according to the display contents of the entire surface illumination backlight means and the display content of the liquid crystal display It consists of a partial illumination backlight means that partially illuminates the display. The small hole portion arranged in the holder of the partial illumination backlight means has a hole area ratio of about 50% and lights the back LED. When not seen from the front, it can be seen in the color of the base around the small hole, and when the back LED is turned on, the light passes through and can be seen in the light color of the back LED. Is.

  As a result, the backlight means of the liquid crystal display is composed of a full illumination backlight means and a partial illumination backlight means, and the partial color of the background color of the liquid crystal display is changed by turning on the partial illumination backlight means. At the same time, a plurality of driving states can be displayed by changing the background color of the backlight means, and the visibility is greatly improved.

  For example, according to the content displayed on the liquid crystal display, by changing the color of the partial illumination backlight means of the corresponding part, the color can be changed according to the content displayed on the background color of the liquid crystal display. At the same time, a plurality of operating states can be displayed with a plurality of background colors, and the contents displayed on the liquid crystal display can be discriminated by the background color even in a distant state so that an easy-to-understand display can be achieved. In addition, since the partial illumination backlight means around the portion showing the contents of the liquid crystal display can be blinked in a state where the full illumination backlight means is turned on, while alerting by blinking of the partial illumination backlight means, The display contents can be easily understood by turning on the entire illumination backlight means, and the visibility is greatly improved.

  In addition, the small hole portion arranged in the holder of the partial illumination backlight means has an opening rate of about 50%. Therefore, when the rear LED is not turned on, the base portion around the small hole is viewed from the front. When the back LED is turned on, it can be formed so that the light passes through and can be seen by the light color of the back LED. When the partial illumination backlight means is not turned on, The difference from other parts can not be distinguished and the appearance is good, the difference from the case is clear when the partial lighting backlight means is turned on, the content displayed on the liquid crystal display becomes clearer, and the visibility is improved To do.

  In the display device of the present invention, the backlight means of the liquid crystal display is composed of a full illumination backlight means and a partial illumination backlight means, and the background color of the liquid crystal display is partially changed by lighting the partial illumination backlight means. The color can be changed, and at the same time, a plurality of driving states can be displayed by changing the background color of the backlight means, and the visibility is greatly improved.

  For example, according to the content displayed on the liquid crystal display, by changing the color of the partial illumination backlight means of the corresponding part, the color can be changed according to the content displayed on the background color of the liquid crystal display. At the same time, a plurality of operating states can be displayed with a plurality of background colors, and the contents displayed on the liquid crystal display can be discriminated by the background color even in a distant state so that an easy-to-understand display can be achieved. In addition, since the partial illumination backlight means around the portion showing the contents of the liquid crystal display can be blinked in a state where the full illumination backlight means is turned on, while alerting by blinking of the partial illumination backlight means, The display contents can be easily understood by turning on the entire illumination backlight means, and the visibility is greatly improved.

  1st invention formed with the liquid crystal display which has the operation part which performs a driving | operation instruction | indication and various settings, the control part which controls a driving | operation by the instruction | indication of this operating part, and the backlight means which displays the driving | running state by a control part. The backlight means includes a display unit, and a liquid crystal display is provided by a rear LED disposed on the rear surface through a small hole portion disposed in a holder that supports the liquid crystal display and the light guide plate in accordance with the display content of the liquid crystal display. It comprises partial illumination backlight means for partially illuminating the vessel.

  With the above-described configuration, by turning on the partial illumination backlight means, the background color of the liquid crystal display can be partially changed, and at the same time, multiple operating states can be displayed by changing the background color of the backlight means. Can be improved, and the visibility is greatly improved.

  For example, according to the content displayed on the liquid crystal display, by changing the color of the partial illumination backlight means of the corresponding part, the color can be changed according to the content displayed on the background color of the liquid crystal display. At the same time, a plurality of operating states can be displayed with a plurality of background colors, and the contents displayed on the liquid crystal display can be discriminated by the background color even in a distant state so that an easy-to-understand display can be achieved. Moreover, since the partial illumination backlight means around the portion showing the contents of the liquid crystal display can be blinked, it is possible to call attention by blinking the partial illumination backlight means, and the visibility is greatly improved.

  In the second invention, in particular, the small hole portion arranged in the holder of the partial illumination backlight means of the first invention has a hole area ratio of about 50%, and when the rear LED is not turned on, it is viewed from the front. When viewed, the base color around the small hole can be seen, and when the rear LED is turned on, the light passes through and can be seen in the light color of the rear LED.

  The small hole portion arranged in the holder of the partial illumination backlight means has a hole area ratio of about 50%. Therefore, when the rear LED is not turned on, the base portion around the small hole is viewed from the front. When the back LED is turned on, it can be formed so that the light passes through and can be seen by the light color of the back LED. When the partial illumination backlight means is not turned on, The difference from other parts can not be distinguished and the appearance is good, the difference from the case is clear when the partial lighting backlight means is turned on, the content displayed on the liquid crystal display becomes clearer, and the visibility is improved To do.

  According to a third aspect of the present invention, there is provided a backlight means having a whole surface illumination backlight means in which a side surface LED is disposed on a side portion of the liquid crystal display and the entire surface of the liquid crystal display is uniformly illuminated via the light guide plate. A partial illumination back that partially illuminates the liquid crystal display with a rear LED disposed on the back through a small hole disposed in a holder that supports the liquid crystal display and the light guide plate according to the display content of the liquid crystal display It consists of a light means.

  With the above-described configuration, the backlight means of the liquid crystal display is composed of a full illumination backlight means and a partial illumination backlight means. The full illumination backlight means uniformly illuminates the entire surface of the liquid crystal display, and the partial illumination backlight means. By turning on, the background color of the liquid crystal display can be partially changed, and at the same time, multiple operating states can be displayed by changing the background color of the backlight means, greatly improving visibility. To improve.

  For example, according to the content displayed on the liquid crystal display, by changing the color of the partial illumination backlight means of the corresponding part, the color can be changed according to the content displayed on the background color of the liquid crystal display. At the same time, a plurality of operating states can be displayed with a plurality of background colors, and the contents displayed on the liquid crystal display can be discriminated by the background color even in a distant state so that an easy-to-understand display can be achieved. In addition, since the partial illumination backlight means around the portion showing the contents of the liquid crystal display can be blinked in a state where the full illumination backlight means is turned on, while alerting by blinking of the partial illumination backlight means, The display contents can be easily understood by turning on the entire illumination backlight means, and the visibility is greatly improved.

  According to a fourth aspect of the present invention, the full illumination backlight means or the partial illumination backlight means can be turned on and off individually.

  Further, since the entire illumination backlight means or the partial illumination backlight means can be individually turned on and off, the entire illumination backlight means or the partial illumination backlight means only for the portion of the content to be displayed on the necessary liquid crystal display. Can be turned on, and the necessary parts can be emphasized, and only the necessary parts can be turned on for the full illumination backlight means or the partial illumination backlight means, so the entire illumination backlight means or the partial illumination backlight means can be saved. Can be emphasized and energy saving can be emphasized.

  According to a fifth aspect of the present invention, the partial illumination backlight means is disposed around the portion indicating the contents of the liquid crystal display, and the partial illumination backlight means is blinked in a state where the entire illumination backlight means is turned on.

  Since the partial illumination backlight means blinks in a state in which the entire illumination backlight means is lit, the backlight means around the part indicating the content of the liquid crystal display is flashed while the content indicating part remains lit. Thus, it is possible to make the display contents easy to understand while calling attention, and the visibility is further improved.

  According to a sixth aspect of the invention, the holder is formed of a fluorescent resin material mixed with a phosphorescent agent so that the holder forms the background color of the liquid crystal display.

  Since the holder is formed of a fluorescent resin material mixed with a phosphorescent agent so that the background color of the liquid crystal display is formed, the content displayed on the liquid crystal display can be displayed even when the backlight off function is selected. The background of the fluorescent color of the holder is easy to understand, and even when the surroundings become dark, the contents displayed on the liquid crystal display can be understood by the light stored in the phosphorescent agent. In addition, when the backlight means is turned on, it is added to the background of the fluorescent color of the holder, so that the brightness is greatly increased and it is easy to see, and the back is mounted on a holder made of a fluorescent resin material mixed with a phosphorescent agent. Light is stored during lighting of the light means, and the display unit can be illuminated with the stored light, so that the visibility is further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic view of a display of a liquid crystal display of a combustor according to an embodiment of the present invention, FIG. 2 is a sectional structural view of the liquid crystal display, and FIG. 3 is a control block diagram of the combustor.

  First, the combustor using the liquid crystal display of the present invention will be described with reference to FIG. 3. Based on the operation instruction 11 and the signal of the operation unit 11 for performing various settings, the control unit 12 controls the operation of the device. The contents of the operation state by the control unit 12 are displayed on the display unit 13. In addition, the combustion section 14 of the equipment includes a burner and a convection fan (not shown), and a combustion sensor 15 that detects the state of the combustion section and a temperature rise in the equipment to detect air shortage. In accordance with signals from various sensors such as a dust sensor 16, a room temperature sensor 17 that detects room temperature, and an oil level sensor 18 that detects the presence or absence of kerosene, the control unit 12 follows the operation instructions and various settings from the operation unit 11. The burner and the convection fan in the combustion unit 14 are controlled in a predetermined sequence, and the current operation state is displayed on the display unit 13.

  Next, the liquid crystal display of the present invention will be described with reference to FIGS. 1 and 2. A liquid crystal display 20 having backlight means is disposed on the printed circuit board 19, and the backlight means includes: A side-surface LED 21 is provided on the side of the liquid crystal display 20 and the entire surface illumination backlight means is disposed so as to uniformly illuminate the entire surface of the liquid crystal display 20 through the light guide plate 23, and the display contents of the liquid crystal display 20 The partial illumination backlight means for partially illuminating the liquid crystal display 20 with the back LED 24 provided on the back via the small hole 22a provided in the holder 22 that supports the liquid crystal display 20 and the light guide plate 23. It consists of.

  The partial illumination backlight means has a plurality of colors on the printed circuit board 19 according to the contents of the liquid crystal display 20 such that the liquid crystal display 20 has a plurality of background colors according to the display contents of the liquid crystal display 20. And a holder 22 having a small hole 22a which is made of a resin of fluorescent color close to white mixed with a phosphorescent agent and forms an opening window of the rear LED 24, and is further provided thereon. A light guide plate 23 and a liquid crystal display 20 are disposed on the light guide plate 23 in order to make the light from the back LED 24 uniform. The small hole 22a portion that forms the opening window of the rear LED 24 of the holder 22 has an opening ratio of about 50%, and is a small hole 22a when viewed from the front when the rear LED 24 is not lit. Although it looks with the color of the base around the small hole 22a, when the back LED 24 is turned on, it is formed so that the light passes through and can be seen with the light color of the back LED 24.

  The liquid crystal display 20 has a stepped shape, and polarizing plates 25 and 26 are respectively attached to the front and back surfaces thereof. The lower part of the liquid crystal display 20 is held by the tip of the pin 27 soldered to the printed circuit board 19 and is in a conductive state with the printed circuit board 19. The liquid crystal display 20 is made of crystals such as ethyl benzoate and ammonium oleate. It is manufactured by heating the active substance, and the transparency is changed by changing the crystal arrangement by the voltage applied through the pin 27, so that a predetermined display can be performed.

  The display contents of the liquid crystal display 20 will be described. The liquid crystal display 20 has “ventilation” 28, “cleaning” 29, “fuel supply” 30, “residual oil” 31, “3” for displaying the contents of the operation state. There are provided pictographs of “pre-time fire warning” 32 and “timer fire pre-warning” 33 and “4-digit numerical display” 34 for displaying room temperature, time and error code. Partial illumination backlight means are arranged on the printed circuit board 19 corresponding to the positions of the pictograms and numerals, and “ventilation” 28 is red and “cleaning” 29 is in accordance with the contents of the liquid crystal display 20. Blue, “Lubrication” 30 is green, “Residual oil” 31 is yellow, “Third hour pre-fire notice” 32 and “Timer pre-fire notice” 33 are orange, and “4-digit number display” 34 is white The rear LED 24 is disposed, and the holder 22 is provided with a small hole 22a that forms the opening window of the above-described rear LED 24 corresponding to the position where the rear LED 24 is located. ”34 is also provided with a partial illumination backlight means as a backlight means for displaying a warning, and a small hole 22a forming a red rear LED 24 and an opening window of the rear LED 24. It is disposed.

  In the above configuration, the operation of the display device will be described. A voltage is applied via the pin 6 of the liquid crystal display 20 based on a signal from the control unit 12 to change the transparency, and the liquid crystal display 20 is in a predetermined operating state. A pictograph for displaying the contents and a numerical display for displaying the room temperature, time, and error code are displayed.

  Here, the display unit 13 uses a liquid crystal display 20 having a backlight unit, and the backlight unit includes a full illumination backlight unit and a partial illumination backlight unit. By changing the color of the backside LED, the background color of the liquid crystal display 20 can be partially changed, and the entire illumination backlight means and the partial illumination backlight means are turned on, flashed, and turned off. Can be displayed easily.

  For example, “ventilation” 28 is red, “cleaning” 29 is blue, “refueling” 30 is green, “residual oil” 31 is yellow, and “3 hours before fire extinguishing” according to the content displayed on the liquid crystal display 20. By changing the color of the rear LED 24 of the corresponding portion, the background color of the liquid crystal display 20 is changed by changing the color of the rear LED 24 of the corresponding part. The color can be changed according to the content to be displayed, and the back LED 24 of the partial illumination backlight means is turned on according to the content of the operation state of the device, so that the content displayed on the liquid crystal display 20 is the background. It becomes possible to discriminate by color, and display becomes easy to understand.

  If the operation state of the device indicates an abnormal state, turn on the side LED 21 of the entire illumination backlight means and turn on an error code indicating the error in the “4-digit number display” 34. The display contents can be understood by lighting the error code of “4-digit number display” 34 while flashing the back LED 24 of the partial illumination backlight means around the numerical display and alerting by the flashing of the partial illumination backlight means. It becomes easy to make it easy to understand.

  The contents of the display will be described. The “ventilation” 28 is displayed when the device is used in a sealed state for a long time in accordance with the signal from the combustion sensor 15 and the room air needs to be replaced. The red backside LED 24 of the partial illumination backlight means is turned on, and “cleaning” 29 is performed in accordance with the signal of the dust sensor 16 so that dust or the like is put on the burner of the combustion unit 14 or the air intake port of the convection fan. When the accumulated air is insufficient, the air intake port filter or the like needs to be cleaned, and at that time, the blue rear LED 24 that illuminates the portion is turned on.

  “Refueling” 30 is displayed when the fuel of the device is low in accordance with the signal from the oil level sensor 18, and at that time, the green rear LED 24 illuminating that portion is turned on, and “4-digit number” The display "34" is switched to display not the clock display but the remaining time that can be burned with the fuel of the device, and the "residual oil" 31 informs that the "4-digit number display" 34 display is the remaining time display. Therefore, the yellow rear LED 24 that illuminates the portion is displayed at that time.

  Furthermore, “3 hours before fire extinguishing notice” 32 is a predetermined operation within 3 hours for prompting ventilation of the room, for example, a predetermined operation for continuing operation with a function of stopping the operation if the user does not press the extension button for 3 hours. The orange back LED 24 that illuminates the part is turned on at that time, and the "pre-timer warning" 33 continues with the function of stopping the automatic operation at a predetermined time after the timer operation. It is displayed when a predetermined operation for prompting is urged, and at that time, the orange rear LED 24 that illuminates the portion is turned on.

  The “4-digit number display” 34 is a time display such as a clock display or a timer operation set time display when not in use, and a temperature display indicating the room temperature or set temperature detected by the room temperature sensor 17 during operation. When the remaining fuel of the device is low, that is, the remaining time when the “residual oil” 31 is turned on, and when the operation state of the device indicates an abnormal state, an error code indicating the error is displayed. It has become. The “4-digit number display” 34 displays the content, for example, “hour” and “minute” for time display and “° C.” for temperature display.

  For example, with the side LED 21 of the full-illumination backlight means turned on, the “4-digit number display” 34 displays a clock when not in operation, displays the set temperature and room temperature during operation, and further provides fuel. When the combustion stops due to running out of fuel, “E001” is displayed in the “4-digit number display” 34, and in this case, the red back LED 24 of the partial illumination backlight means around the “4-digit number display” flashes. At the same time, the “refueling” 30 is displayed on the liquid crystal display 20 and the green rear LED 24 of the backlight means for illuminating the portion is lit. Therefore, it becomes easy for elderly people and color-impaired people to find out that there was an abnormality by flashing the backlight means for displaying a warning. The number display 34 makes it easy to understand the reason, and for the ordinary person, the contents can be understood by the color of the backlight means that illuminates the part, and the contents can be judged by color even if they are far away. Usability can be greatly increased. In other words, the display contents can be easily understood by turning on the entire illumination backlight means while calling attention by blinking the partial illumination backlight means, and the visibility is greatly improved.

  In this way, according to the content of the operation state of the equipment, the entire illumination backlight means and the partial illumination backlight means are turned on, blinking, and turned off, and the contents are displayed on the display of the liquid crystal display 20, By turning on or blinking the back LED 24 of the backlight means corresponding thereto, the content displayed on the liquid crystal display 20 becomes easier to understand, and the usability for the user is greatly improved.

  Further, the small hole portion 22a disposed in the holder 22 of the partial illumination backlight means has an opening ratio of about 50%. Therefore, when the rear LED 24 is not lit, when viewed from the front, When the rear LED 24 is lit, it can be formed so that light passes through and can be seen with the light color of the rear LED 24. When the partial illumination backlight means is not lit, The difference between the hole part and the other part is indistinguishable and looks good. When the partial illumination backlight means is turned on, the difference from the case is clear, and the content displayed on the liquid crystal display 20 becomes clearer. Visibility is improved.

  Further, since the entire illumination backlight means or the partial illumination backlight means and the backlight means can be individually turned on / off, the partial illumination backlight means is turned on only for the content to be displayed on the necessary liquid crystal display 20. In addition to emphasizing the necessary part, it is possible to turn on the entire illumination backlight means or the partial illumination backlight means for only the necessary part, so that energy saving can be achieved and energy saving can be emphasized.

  Since the holder 22 is formed of a fluorescent resin material mixed with a phosphorescent agent so that the background color of the liquid crystal display 22 is formed, the backlight 22 is displayed on the liquid crystal display 20 even when the backlight is turned off. The content to be displayed becomes the background of the fluorescent color of the holder 20 and becomes easy to understand. Further, even if the surroundings become dark, the content displayed on the liquid crystal display 20 by the light stored in the phosphorescent agent can be understood. Further, when the backlight means is lit, it is added to the background of the fluorescent color of the holder 22, so that the brightness is remarkably increased and the holder 22 is made of a fluorescent resin material mixed with a phosphorescent agent. The light is stored during the lighting of the backlight means, and the display portion can be illuminated with the stored light, so that the visibility is further improved.

  In the present embodiment, the blinking of the rear LED 24 of the partial illumination backlight means is the partial illumination backlight means around the “4-digit numeric display” 34, but this may be applied to any part of the pictograph, numeric display, etc. It may be used or any combination of lighting, blinking, and extinguishing of the back LED 24 of the full illumination backlight means and the partial illumination backlight means may be used. Further, the display device of the present invention has been described as a display device of a combustor. However, this only needs to use the liquid crystal display 20 such as an electric appliance, and the configuration of each other part is within the scope of achieving the object of the present invention. Any configuration may be used.

  As described above, the display device according to the present invention enables easy-to-understand display with a simple configuration, and therefore can be applied to uses such as a display device used for a general electric appliance.

Schematic display of a liquid crystal display according to Embodiment 1 of the present invention Cross-sectional structure of the liquid crystal display FIG. 1 is a control block diagram of a combustor in Embodiment 1 of the present invention. Block diagram of a conventional combustor Flow chart showing operation of conventional combustor

Explanation of symbols

11 Operation unit 12 Control unit 13 Display unit 20 Liquid crystal display 21 Side LED
22 Holder 22a Small hole in holder 23 Light guide plate 24 Rear LED

Claims (6)

An operation unit that performs operation instructions and various settings, a control unit that controls operation according to instructions from the operation unit, and a display unit that is formed by a liquid crystal display having a backlight unit that displays the operation state by the control unit, The backlight means comprises a partial illumination backlight means for partially illuminating the liquid crystal display with a back LED disposed on the back surface through a small hole disposed in a holder that supports the liquid crystal display. The small hole portion arranged in the holder of the partial illumination backlight means has a hole area ratio of about 50%, and when viewed from the front when the rear LED is not turned on, it can be seen in the color of the base around the small hole. In addition, the display device according to claim 1, wherein when the rear LED is turned on, the light is allowed to pass therethrough so that it can be seen by the light color of the rear LED. The backlight means includes a full-side illumination backlight means disposed so that a side surface LED is disposed on a side portion of the liquid crystal display and the liquid crystal display substantially uniformly illuminates the entire surface through the light guide plate, and the display of the liquid crystal display In accordance with the contents, it comprises a partial illumination backlight means for partially illuminating the liquid crystal display with a back LED disposed on the back surface through a small hole disposed in a holder supporting the liquid crystal display and the light guide plate. Item 3. The display device according to Item 1 or 2. The display device according to any one of claims 1 to 3, wherein the full illumination backlight means and the partial illumination backlight means can be individually turned on and off. The partial illumination backlight means is disposed around the portion indicating the content of the liquid crystal display, and the partial illumination backlight means is blinked in a state where the full illumination backlight means is turned on. A display device according to claim 1. The display device according to claim 1, wherein the holder is formed of a fluorescent resin material mixed with a phosphorescent agent so as to form a background color of the liquid crystal display.

Images