JP2005172369A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clear display device of a simple constitution, with respect to a display device of an electric appliance such as a combustor using a liquid-crystal display unit. <P>SOLUTION: A display part is provided with the liquid crystal display unit 20 on a printed board 19 through a holder 21, a back face means provided with a plurality of colors is mounted on a back face of the liquid crystal display unit 20 to provide the liquid crystal display unit 20 with a plurality of background colors, and the background colors of the liquid crystal display unit 20 is changed in accordance with contents of display, whereby a plurality of operation states can be simultaneously displayed with the plurality of background colors, the contents displayed on the liquid crystal display unit 20 can be easily discriminated even from a far place, and the easy-discriminatable display can be performed. Further as the background colors can be changed corresponding to the contents of display, and the contents of display can be classified by the background colors, the brief summary of the contents of display can be judged and easily discriminated by the background color, and the usability can be improved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a display device for an oil combustor configured using a liquid crystal display.

  2. Description of the Related Art Conventionally, a display device for an oil combustor such as an oil fan heater requires a large amount of display information because of various display contents, and a fluorescent display tube and a liquid crystal display 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.

  Further, since the display unit 3 uses a liquid crystal display having a backlight, a light source used for the backlight is required, and the configuration thereof is complicated and costly.

  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. The display unit has a liquid crystal display arranged on a printed circuit board through a holder, and at least the surface of the holder is mixed with a phosphorescent agent so that the background color of the liquid crystal display is plural. It is set as the structure which gave the color scheme with this fluorescent color.

  As a result, the display unit arranges the liquid crystal display on the printed circuit board through the holder, and at least the surface of the holder has a plurality of fluorescent colors mixed with a phosphorescent agent so that the background color of the liquid crystal display is plural. Since the color scheme is applied, the background color of the liquid crystal display can be partially changed according to the contents displayed on the liquid crystal display, and the visibility is greatly improved.

  In other words, by changing the color according to the background color displayed on the liquid crystal display, multiple operating states can be displayed at the same time with multiple background colors. Can be discriminated, and the display can be easily understood. In addition, the background color can be changed according to the display content, and the display content can be classified according to the background color, so that the outline of the display content can be judged by the background color, which makes it easier to understand and increases usability. .

  Furthermore, since at least the surface of the holder is colored with a plurality of fluorescent colors mixed with a phosphorescent agent, the content displayed on the liquid crystal display is the same as the fluorescent color of the holder even if the liquid crystal display is not illuminated by a backlight. It becomes easy to understand as a background, 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.

  Further, since the backlight for illuminating the liquid crystal display is not used, the configuration becomes simple and an inexpensive configuration can be achieved.

  The display device of the present invention can partially change the background color of the liquid crystal display according to the content displayed on the liquid crystal display, and can simultaneously display a plurality of operating states with a plurality of background colors. Thus, the content displayed on the liquid crystal display can be discriminated by the background color even in a distant state, so that the visibility is greatly improved and the display is easy to understand.

  A first invention includes an operation unit that performs a driving instruction and various settings, a control unit that controls driving according to an instruction of the operating unit, and a display unit that displays a driving state by the control unit. A display device is used, and a back means having a plurality of colors is arranged on the back surface of the liquid crystal display so that the liquid crystal display has a plurality of background colors.

  The display unit arranges the liquid crystal display on the printed circuit board via a holder, and arranges a back means having a plurality of color schemes on the back of the liquid crystal display so that the liquid crystal display has a plurality of background colors. Therefore, the background color of the liquid crystal display can be partially changed according to the contents displayed on the liquid crystal display, and the visibility is greatly improved.

  In other words, by changing the color according to the background color displayed on the liquid crystal display, multiple operating states can be displayed at the same time with multiple background colors. Can be discriminated, and the display can be easily understood. In addition, the background color can be changed according to the display content, and the display content can be classified according to the background color, so that the outline of the display content can be judged by the background color, which makes it easier to understand and increases usability. .

  In particular, the second aspect of the invention is configured to perform reverse display in which the content portion displayed on the liquid crystal display of the first aspect of the invention is transparent and the background is translucent.

  And since the content part displayed on the liquid crystal display is configured to be transparent and reverse display with the background semi-transparent, the content part to be displayed on the liquid crystal display appears with the background color of the liquid crystal display. It becomes possible to display more easily. For example, when not displaying on the liquid crystal display, the display part of the liquid crystal display is in a semi-transparent state, and when displaying on the liquid crystal display, the display content part becomes transparent and the background color of the liquid crystal display appears. The color display according to the display content can be performed, and the visibility is improved.

  In particular, the liquid crystal display of the first or second aspect of the invention is arranged on the printed circuit board via the holder, and at least the surface of the holder is arranged so that the background color of the liquid crystal display is plural. It is set as the structure which gave the color scheme with the some fluorescent color which mixed the luminous agent.

  Further, in addition to the effect that the liquid crystal display of the first invention has a plurality of background colors, at least the surface of the holder is configured to be colored with a plurality of fluorescent colors mixed with a phosphorescent agent. Even if the display is not illuminated, the content displayed on the liquid crystal display is easy to understand as the background of the fluorescent color of the holder, and even if the surroundings become dark, the content displayed on the liquid crystal display by the light stored in the phosphorescent agent Will come to understand.

  In addition, since the backlight for illuminating the liquid crystal display is not used, the configuration becomes simple and an inexpensive configuration can be achieved.

  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 liquid crystal display of an oil 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 oil combustor using the liquid crystal display of the present invention will be described with reference to FIG. 3. The control unit 12 controls the operation of the equipment based on the operation instruction 11 and the signal of the operation unit 11 for performing various settings. The contents of the operation state by the control unit 12 are displayed on the display unit 13. In addition, a combustion sensor 15 that detects the state of the combustion unit 14, a dust sensor 16 that detects a temperature rise in the device to detect air shortage, a room temperature sensor 17 that detects room temperature, and the presence or absence of kerosene are detected. In accordance with signals from various sensors such as the oil level sensor 18, the control unit 12 can predetermine the combustion unit 14 including a burner and a convection fan (not shown) in accordance with operation instructions and various settings from the operation unit 11. In addition, control is performed so that 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. The liquid crystal display 20 is disposed on the printed circuit board 19 via the holder 21. In accordance with the display content of the liquid crystal display 20, a plurality of fluorescent colors mixed with a phosphorescent agent are printed so that the liquid crystal display 20 has a plurality of background colors.

  The liquid crystal display 20 has a stepped shape, and polarizing plates 22 and 23 are attached to the front and back surfaces, respectively. The lower part of the liquid crystal display 20 is held by the tips of the pins 24 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 composed 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 content portion displayed on the liquid crystal display 20 is configured to be transparent and display in reverse with the background semi-transparent, and the content portion to be displayed on the liquid crystal display 20 appears with the background color of the liquid crystal display 20. For example, when not displaying on the liquid crystal display 20, the display portion of the liquid crystal display 20 is in a semi-transparent state, and when displaying on the liquid crystal display 20, the display content portion becomes transparent, and the liquid crystal display Twenty background colors appear, and color display according to the display contents can be performed.

  The display contents of the liquid crystal display 20 will be described. The liquid crystal display 20 has “ventilation” 25, “cleaning” 26, “fuel supply” 27, “residual oil” 28, “3” for displaying the contents of the operation state. The pictographic part of the "pre-time fire warning" 29, the "timer pre-fire notice" 30, the room temperature, the time and the error code "4 digit number display" 31 number display and "4 digit number display" 31 number display There is an enclosure portion 32 provided around the screen, and the content portion to be displayed is transparent and arranged so as to be displayed in reverse so that the background is translucent. A plurality of fluorescent colors mixed with a phosphorescent agent are printed on the surface of the holder 21 corresponding to the positions of the pictogram part, the numerical display part, and the enclosing part 32. According to the contents of the liquid crystal display 20, "ventilation" 25 is "Red", "Cleaning" 26 is blue, "Refueling" 27 is green, "Residual oil" 28 is yellow, "Third hour pre-fire notice" 29 and "Timer pre-fire notice" 30 are orange, and "4 digits The “numeric display” 31 is white, and the surrounding portion 32 around the numerical display of the “4-digit numerical display” 31 is red for displaying a warning.

  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. The pictograph for displaying the contents and the numerical display for displaying the room temperature, time, and error code are highlighted.

  Here, the liquid crystal display 20 is disposed on the printed circuit board 19 via the holder 21, and the surface of the holder 21 has a plurality of background colors of the liquid crystal display 20 according to the display content of the liquid crystal display 20. As described above, a plurality of fluorescent colors mixed with a phosphorescent agent are printed, and the background color of the liquid crystal display 20 can be partially changed. Combining the lights off makes it easy to understand.

  For example, “ventilation” 25 is red, “cleaning” 26 is blue, “refueling” 27 is green, “residual oil” 28 is yellow, and “3 hours before fire extinguishing” according to the content displayed on the liquid crystal display 20. 29 and “Preliminary before fire extinguishing” 30 are orange, and “4-digit number display” 31 is white, and the fluorescent color printed on the corresponding portion of the holder 21 is displayed. In this way, the color display according to the display content can be performed, and the content displayed on the liquid crystal display 20 can be discriminated by the background color, so that the visibility is improved.

  Further, when the operation state of the device indicates an abnormal state, an error code indicating the error is displayed in reverse on the “4-digit number display” 31 of the liquid crystal display 20, and the surrounding portion of the number display The liquid crystal of the 32 liquid crystal display blinks so that the background color red blinks, and the contents are displayed in an easy-to-understand manner by reversing the error code of “4-digit number display” 31 while alerting by the blinking. It is possible to improve visibility.

  Explaining the display contents, “ventilation” 25 is displayed in reverse when the device is used in a sealed state in accordance with the signal from the combustion sensor 15 and the room air needs to be replaced. The content portion to be displayed is transparent, and the background color of the liquid crystal display 20 on the surface of the holder 21 appears red. Similarly, “cleaning” 26 requires cleaning of a filter or the like of the air intake when dust or the like accumulates in the air intake of the burner of the combustion unit 14 or the convection fan according to the signal of the dust sensor 16 and the air is insufficient. At this time, it is displayed in reverse video so that the blue background color appears.

  In addition, “refueling” 27 is highlighted when the fuel level of the device is low in accordance with the signal from the oil level sensor 18 so that the background color green appears, and “4-digit number display” 31 is displayed. It is switched to display the remaining time that can be burned with the fuel of the equipment instead of the clock display, and “Residual oil” 28 is displayed in reverse to indicate that the display of “4-digit number display” 31 is the remaining time display. The background color is yellow.

  Furthermore, “3 hours before fire extinguishing notice” 29 is a predetermined operation within 3 hours for promoting 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. Is highlighted to prompt the user to display the orange background color. Similarly, the “pre-timer pre-fire warning” 30 is highlighted when a predetermined operation for continuing the automatic operation at a predetermined time after the timer operation is promoted, and an orange background color appears. .

  The “4-digit number display” 31 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 equipment is low, that is, the remaining time when the “residual oil” 28 is lit, and when the operating status of the equipment indicates an abnormal state, the error code indicating the error is highlighted. Thus, the white background color appears. In the “4-digit number display” 31, the displayed contents, for example, “hour” and “minute” for time display, and “° C.” for temperature display are highlighted, and the background color is white. It is supposed to appear.

  For example, the “4-digit number display” 31 indicates that the clock is displayed in reverse when not in operation, the set temperature and room temperature are displayed in reverse during operation, and an error occurs when combustion stops due to running out of fuel. The code “E001” is highlighted, and in this case, the surrounding portion 32 of “4-digit number display” blinks and the background color red appears to blink. Therefore, it becomes easy for elderly people and color-impaired people to find out that there is an abnormality by flashing the surrounding portion 32 of the “4-digit number display” that displays a warning. Because it is shown in the pictogram of “Lubrication” 27 and “4-digit number display” 31, the reason is easy to understand, and for the ordinary person, the contents can be understood by the background color of the part, and the contents can be understood even if they are far away. The user-friendliness is greatly increased, such as being able to judge by color. In other words, the display contents can be easily understood by reversing the display of the “4-digit number display” 31 while calling attention by blinking the enclosure portion 32, and the visibility is greatly improved.

  In this way, the display color of the liquid crystal display 20 is displayed by combining the background color and the lighting, blinking, and extinguishing of the display of the liquid crystal display 20 in accordance with the content of the operation state of the device and reversing the content. The contents are easier to understand, the visibility is improved, and the usability of the user is greatly improved.

  In addition, since at least the surface of the holder 21 is configured to be colored with a plurality of fluorescent colors mixed with a phosphorescent agent, the contents displayed on the liquid crystal display 20 can be displayed even if the liquid crystal display 20 is not illuminated by a backlight. The background of the fluorescent color of the holder 21 becomes easy to understand, and further, the contents displayed on the liquid crystal display 20 can be understood by the light stored in the phosphorescent agent even when the surroundings become dark.

  In addition, since the backlight for illuminating the liquid crystal display 20 is not used, the configuration becomes simple and an inexpensive configuration can be achieved.

  In the present embodiment, the liquid crystal display 20 has been described with the configuration without the backlight means, but this may be configured with the backlight means, so that when the backlight means is turned on, Since it is added to the background of the fluorescent color of the holder 21, the brightness is remarkably increased and it is easy to see, the illumination of the backlight means can be reduced, the configuration is simplified, and the cost can be reduced. In addition, light is stored in the holder 21 formed of a fluorescent resin material mixed with a phosphorescent agent while the backlight unit is turned on, and the display unit can be illuminated with the stored light, and the backlight unit is turned off. However, the contents displayed on the liquid crystal display 20 can be understood, and the advantage of improving the visibility can be considered.

  In addition, the liquid crystal display 20 has been described with a configuration in which at least the surface of the holder 21 is colored with a plurality of fluorescent colors mixed with a phosphorescent agent so that the background color of the liquid crystal display 20 is plural. The liquid crystal display 20 is disposed on the printed circuit board via a holder 21 that supports and regulates the position, and the holder 21 is formed of a fluorescent resin material mixed with a phosphorescent agent so as to form the background color of the liquid crystal display 20. According to this, the content displayed on the liquid crystal display 20 can be prevented even when the liquid crystal display 20 is not illuminated by the backlight while preventing the liquid crystal display 20 from being difficult to see due to variations in angle and position. Becomes the background of the fluorescent color of the holder 21 and becomes easy to understand, and even when the surroundings become dark, the contents displayed on the liquid crystal display 20 by the light stored in the phosphorescent agent can be understood.

  Further, the configuration in which a plurality of fluorescent colors mixed with a phosphorescent agent is printed on the surface of the holder 21 so that the liquid crystal display 20 has a plurality of background colors has been described. As described above, the holder 21 may be formed by combining a plurality of fluorescent color resin materials mixed with a phosphorescent agent, as long as the holder 21 has a plurality of background colors. Further, although the blinking has been described only in the surrounding part 32 of the “4-digit number display” 31, this may be used for any part such as a pictogram or a number display, and the liquid crystal display 20 is turned on, blinks, Any combination of turning off may be used, and the configuration of each of the other components may be any configuration as long as the object of the present invention is achieved.

  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

DESCRIPTION OF SYMBOLS 11 Operation part 12 Control part 13 Display part 19 Printed circuit board 20 Liquid crystal display 21 Holder

Claims (3)

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 displays an operation state by the control unit, the display unit using a liquid crystal display, A display device for an oil combustor in which a back means having a plurality of colors is provided on the back surface of a liquid crystal display so that the background color of the display is plural. 2. The display device for an oil combustor according to claim 1, wherein the content portion to be displayed on the liquid crystal display is configured to be reversely displayed with the background transparent and the translucent background. The display unit arranges the liquid crystal display on the printed circuit board through the holder, and at least the holder surface is colored with a plurality of fluorescent colors mixed with a phosphorescent agent so that the background color of the liquid crystal display is plural. 3. A display device for an oil combustor according to claim 1 or 2.

Images