JP2010064878A - Push button switch for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve uniformity in brightness and color of lighting by restricting unevenness thereof in operation for pushing a push button switch for an elevator. <P>SOLUTION: This push button switch is provided with a control means 9 to adjust the brightness of each LED 5 and 6 so as to control lighting color by controlling the duty of driving signals for driving each LED 5 and 6 to be turned on based on each set value about the brightness of each LED 5 and 6 given from outside by a serial signal. The control means 9 has a correcting means formed of: an individual unevenness correcting section 11 for correcting the unevenness in brightness of each LED 5 and 6 by correcting each set value; and a deterioration with time correcting section 12 for correcting the lowering of brightness of each LED 5 and 6 due to deterioration with time. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a push button switch for an elevator, and more particularly to an illuminated push button switch in which a button portion is illuminated from the inside when the push button is pressed.

As an push switch used for an elevator switch for specifying a destination floor or opening / closing a door, there is an illumination type switch that displays the switch operation state by illuminating the push button from the inside when the push button is operated. (For example, refer to Patent Document 1).
JP 2003-272473 A

  In such an elevator push button switch, market demands for brightness and hue (color tone) when the push button is illuminated from the inside are becoming increasingly severe.

  Conventionally, LEDs, which are light sources mounted inside a push button switch, are ranked according to their brightness and color, and those of a specific rank are used, or the current flowing through the LEDs is limited for brightness. For example, the current limiting resistor can be replaced with a constant one that provides desired brightness.

  However, in the manufacture of LEDs, there are variations in the brightness and color of the LEDs themselves. For this reason, a desired number of LEDs of a specific rank may not be obtained. There is a problem that it takes time and cost to do so.

  In addition, there is an increasing demand for illumination of various colors, not limited to conventional single colors such as white and orange.

  The present invention has been made paying attention to such a situation, and it is an object of the present invention to improve uniformity by suppressing variations in brightness and hue of illumination during pressing operation of an elevator push button switch.

  (1) The elevator push button switch according to the present invention is an elevator push button switch including a switch that operates in accordance with a push-in operation of the push button, and a plurality of light sources that illuminate the push button. Control means for controlling the illumination color by adjusting the brightness of each light source by controlling the duty of the drive signal for driving each light source to turn on based on the set value of the brightness of each light source, The means has correction means for correcting the setting values to correct brightness variations of the light sources, and controls the duty based on the setting values corrected by the correction means. .

  Each light source has a different color tone.

  The variation in the brightness of each light source refers to the variation in the brightness of each light source. For example, in the case of a red light source, the variation in the brightness of one red light source.

  Brightness includes luminance, luminous intensity, or illuminance.

  According to the elevator push button switch of the present invention, the brightness setting value of each light source is corrected so as to correct the variation in brightness of each light source, and the duty of the drive signal is controlled according to the corrected setting value. Therefore, the variation in the brightness of each light source can be suppressed, and the uniformity of the brightness and hue of the illumination color due to the combination of these light sources can be suppressed.

  As a result, it is possible to suppress variations in the brightness and hue of the illumination color for each of the elevator push button switches.

  (2) The elevator push button switch according to the present invention is an elevator push button switch including a switch that operates in accordance with a push-in operation of the push button, and a plurality of light sources that illuminate the push button. Control means for controlling the illumination color by adjusting the brightness of each light source by controlling the duty of the drive signal for driving each light source to turn on based on the set value of the brightness of each light source, And a correction unit that corrects the variation in brightness of each light source by correcting each set value and corrects a decrease in brightness due to deterioration of each light source over time, and is corrected by the correction unit. The duty is controlled based on each set value.

  According to the elevator push button switch of the present invention, the brightness setting value of each light source is corrected so as to correct the variation in brightness of each light source, and the duty of the drive signal is controlled according to the corrected setting value. Therefore, the variation in the brightness of each light source can be suppressed, and the uniformity of the brightness and hue of the illumination color due to the combination of these light sources can be suppressed.

  Furthermore, the brightness setting value of each light source is corrected so as to correct the decrease in brightness of each light source due to deterioration over time, and the duty of the drive signal is controlled according to the corrected setting value. It is possible to suppress changes in the brightness and hue of the illumination color due to the difference in the brightness decrease of each light source.

  As a result, variations in the brightness and hue of the illumination color for each of the elevator push button switches can be suppressed, and changes in the brightness and hue of the illumination color over time, for example, 1 year and 2 years. Can be suppressed.

  (3) In the embodiment of the above (1), the correction means corrects each set value based on the storage unit that stores a correction value for correcting variation in brightness of each light source and the correction value. It is also possible to include a correction unit.

  The correction value is preferably determined in advance by measuring the brightness of each of the light sources and measuring the brightness. This measurement of brightness is preferably performed, for example, in an inspection process during manufacturing.

  According to this embodiment, the brightness variation of each light source can be corrected based on the correction value.

  (4) In the embodiment of the above (2), the correction means includes a first storage unit that stores correction values for correcting variations in brightness of the light sources, and the correction values of the first storage unit. Based on the first correction unit that corrects each set value, a lighting time integration unit that integrates the lighting time of the push button switch, the accumulated total lighting time and the temporal deterioration of the brightness of each light source And a second correction unit that corrects each set value based on the degree of.

  The correction value stored in the first storage unit is preferably determined in advance by measuring the brightness of each of the light sources and measuring the brightness.

  The degree of deterioration with time of the brightness of each light source is, for example, continuously turned on for each type of light source, for example, when a red light source and a yellow light source are provided, for each of the red light source and the yellow light source. It is preferable to measure the degree of deterioration of brightness over time by performing a test.

  The second correction unit preferably corrects the decrease in brightness due to the temporal deterioration of each light source based on the accumulated total lighting time and the degree of temporal deterioration of the brightness of each light source.

  According to this embodiment, the first correction unit can correct the variation in brightness of each light source, and the second correction unit can correct the illumination color due to the difference in brightness decrease of each light source due to deterioration over time. Changes in brightness and hue can be suppressed.

  (5) In another embodiment of the elevator push button switch of the present invention, the plurality of light sources are a red light emitting diode, a green light emitting diode and a blue light emitting diode.

  In this embodiment, since the light emitting diodes of three colors of red, green, and blue are provided, it is possible to select an arbitrary illumination color by selecting the setting value of the brightness of each light emitting diode.

  (6) In the embodiment of the above (3) or (4), each setting value and the correction value of the brightness of each of the plurality of light sources are given from the outside by a serial signal, Or a correction code may be included.

  According to this embodiment, when it is a set value, it is corrected and the brightness of each light source is adjusted by controlling the duty of the drive signal. It can be used for correction.

  In addition, the brightness of each light source is adjusted by changing the setting value from the elevator control panel according to the time zone such as day or night, or the season such as spring, summer, autumn, and winter. It is possible to change the hue of the color according to the time zone and season.

  According to the present invention, the brightness setting value of each light source is corrected so as to correct the variation in brightness of each light source, and the duty of the drive signal is controlled according to the corrected setting value. Variations in brightness can be suppressed, and variations in the brightness and hue of illumination colors due to the combination of these light sources can be suppressed to improve uniformity, whereby one of the elevator push button switches, 1 This makes it possible to suppress variations in the brightness and hue of the illumination color for each individual.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing an elevator push button switch according to the present invention and an elevator central control panel that controls lighting thereof.

Button switch 1 ₁ to 1 ₃ press elevator of this embodiment is installed on the wall of the elevator car, for example, it is pressed to specify the destination floor.

Button switch 1 ₁ to 1 ₃ Press for each elevator, as in the prior art, is deployed and push button made of a transparent resin material, and a switch which operates in association with the pressing operation of the push button, on the back side of the push button A light guide plate and a plurality of light sources for illuminating the push buttons from the back side are provided. In this embodiment, a red LED and a yellow LED are provided as will be described later, and illumination is performed with a single orange color obtained by combining them.

The central control panel 2 of the elevator, the operation signal of the switch due to the pressing operation of the button switch 1 ₁ to 1 ₃ push elevator is provided, in accordance with this, with respect to the corresponding push button switch for an elevator, lights Gives a setting value that specifies the signal and its brightness. This setting, the ratio of the ON time Ton for blinking cycle of the pulse-like drive signal for each LED in the button switch ₁ 1 to 1 ₃ press elevator (= ON time Ton + off time Toff), i.e., a duty (%) Given.

  In this embodiment, as will be described later, in addition to the set value, the central control panel 2 can transmit a correction value for correcting variation in brightness of each LED by a serial signal.

In FIG 1, between the button switch ₁ 1 to 1 ₃ Press central control panel 2 and the elevators of the elevator, + 5V, the common power supply line _L 1 of 0V, _{L 2,} the on / off individual signal lines L ₃ ~L _5, and the like brightness settings of LED, for example, are common serial signal line _{L 6} for transmitting a serial signal RS-232c are shown.

FIG. 2 is a block diagram showing an internal configuration of the elevator push button switch of FIG. Each of the elevator push button switches 1 ₁ to 1 _{3 in} FIG. 1 has the same internal configuration except that the destination floor to be displayed is different. Therefore, in FIG.

The elevator push button switch 1 of this embodiment incorporates the above-described switch 3 that operates in accordance with the pressing operation of the push button, and the output terminal of this switch 3 is connected to the above-described central control panel via the connector 4. 2 is connected. The connector 2 is connected to the lines L _{1 to} L ₆ in FIG.

  The elevator push button switch 1 includes a red first LED 5 and a yellow second LED 6 for illuminating the pressed push button with an orange color. The control means 9 is provided with a pulsed lighting drive signal via the limiting resistors 7 and 8 to adjust its brightness and control the illumination color. This control means 9 is composed of, for example, a one-chip microcomputer. Has been.

  The control means 9 includes a serial signal receiving unit 10 that receives a serial signal from the central control panel 2 and a memory 25 that stores the setting value when the serial signal is a setting value for the brightness of the LEDs 5 and 6. And an individual variation correction unit 11 that corrects variations in brightness due to individual LEDs, a temporal deterioration correction unit 12 that corrects deterioration of brightness over time of LEDs, and a set value used for the previous lighting drive. A drive value storage unit 13 that stores the value as a value, and a drive signal generation unit 14 that generates a pulse-shaped drive signal with a duty corresponding to the corrected set value or the previous drive value are provided.

  The LED has a brightness variation for each individual, and the individual variation correction unit 11 corrects the brightness variation, and includes a nonvolatile memory 15 as a storage unit in which a variation correction coefficient is stored, A correction unit 16 that corrects the variation by multiplying the variation correction coefficient by the brightness setting value stored in the memory 25 is provided.

  The variation correction coefficient corresponds to each LED, and is determined so as to obtain a constant brightness by measuring the brightness in the inspection process when manufacturing the push button switch for the elevator. For example, when the LED is bright, the variation correction coefficient is small, and when the LED is dark, the variation correction coefficient is determined to be large.

  When the serial signal received by the serial signal receiving unit 10 is a variation correction coefficient, it is stored in the non-volatile memory 15 of the individual variation correcting unit 11.

  FIG. 2 shows an example in which the brightness setting values of the LEDs 5 and 6 of the serial signals received by the serial signal receiving unit 10 are 60% and 20%, and individual variations with respect to these setting values. The correction unit 11 shows an example in which the variation correction coefficients 0.75 and 0.70 are multiplied, and the corrected set values are 45% and 14%, respectively.

  The degree of deterioration of brightness over time differs depending on the type and model of the LED, and as shown in FIG. 3, for example, the initial brightness is set to “1” for a red LED and a yellow LED. The change in relative light intensity with respect to the total lighting time is different.

  Therefore, for example, when the brightness of the red first LED 5 and the yellow second LED 6 is adjusted to be an orange illumination color, the first LED 5 and the second LED 6 are deteriorated with time. Since the degree of brightness decrease is different, the brightness and hue of the orange illumination color also change.

  Therefore, in this embodiment, the deterioration with time of the first and second LEDs 5 and 6 is corrected by the deterioration with time correction unit 12 shown in FIG. It is to suppress.

  The temporal deterioration correcting unit 12 is integrated with a lighting time integrating unit 17 including a timer for integrating the lighting time of the push button switch for the elevator, and a temporal deterioration coefficient corresponding to the degree of temporal deterioration stored in advance. A correction unit 18 that multiplies the total lighting time, adds 1 and multiplies the corrected set value from the individual variation correction unit 11 for correction. The time degradation coefficient is obtained in advance by performing a continuous lighting test in advance for each type of LED.

  The lighting time integration unit 17 integrates the total lighting time that is integrated as the number of years. For example, if the total lighting time is half a year, it is 0.5.

  FIG. 2 shows an example in which the total lighting time is Y (year) and the aging degradation coefficients of the LEDs 5 and 6 are 0.2 and 0.3. In the example, the setting values 45% and 14% corrected by the individual variation correcting unit 11 are corrected by multiplying them by (1 + 0.2Y) and (1 + 0.3Y), respectively.

  The drive value storage unit 13 stores the set value used for the previous drive as the drive value in preparation for when the lighting signal is given before the brightness set value is given from the central control panel 2. For example, a non-volatile memory. When the lighting signal is given before the brightness setting value is given from the central control panel 2, the driving signal generation unit 14 drives the lighting based on the driving value stored in the driving value storage unit 13. Generate a signal.

  In this embodiment, the above-described setting value for designating the brightness of each LED 5, 6 can be given by the serial signal given from the central control panel 2 to the elevator push button switch 1, and the individual variation correcting unit 11 can be given. A variation correction coefficient to be stored can also be given.

  For this reason, the serial signal includes a command code for designating whether it is a set value or a variation correction coefficient.

  Based on this command code, the serial signal receiving unit 10 temporarily stores it in the memory 25 as described above when it is a set value, and stores it in the nonvolatile memory 15 of the individual variation correcting unit 11 when it is a variation correction coefficient. Store.

  In this embodiment, for example, a command code “S” at the head indicates a set value, and a command code “@” indicates a variation correction coefficient.

  For example, when the setting value of the yellow (Y) LED 6 is “20%” and the setting value of the red (R) LED 6 is “60%”, a serial signal corresponding to “SY20R60” is obtained. ) Correction coefficient “0.70” and red (R) correction coefficient “0.75”, the serial signal corresponds to “@ Y70R75”.

  FIG. 4 is a flowchart for explaining the operation of this embodiment.

  In FIG. 4, TIME_COUNT is the value of the internal integration timer, Y_LED_TRM is the individual variation correction coefficient of the yellow LED, R_LED_TRM is the individual variation correction coefficient of the red LED, Y_LED_TIME is the degradation coefficient of the yellow LED, and R_LED_TIME is the time of the red LED. Deterioration coefficient.

  First, each previous LED drive value is read from the drive value storage unit 13 (step n101), and it is determined whether or not a serial signal is received (step n102). When the serial signal is received, the serial signal is received (step n103). ), It is determined whether or not the command code included in the serial signal is an LED correction value (step n104).

  When the command code is not an LED correction value, the received value is a set value, and the drive values of the first and second LEDs 5 and 6 are calculated using the above-described variation correction coefficient, total lighting time, and temporal deterioration coefficient. It is calculated (step n105), stored in the drive value storage unit 13 (step n106), and it is determined whether or not the “lighting / extinguishing” signal is lit (step n107). Driving is performed with the duty set to each driving value (step n108). When the duty is not turned on at step n107, the duty is turned off, that is, the duty of each LED is set to zero (step n109).

  If the command code is an LED correction value in step n104, the received value corresponding to each LED is stored as a variation correction coefficient for individual variation correction (step n110), and the process proceeds to step n107. .

  According to this embodiment, it is possible to suppress variations in orange brightness and hue for each of the elevator push button switches 1. In addition, changes in orange brightness and hue over time are suppressed, and the same brightness and hue as in the initial stage can be maintained.

  In this embodiment, the variation correction coefficient is given by serial communication from the external central control panel 2 and can be changed. However, as another embodiment of the present invention, the elevator push At the time of manufacturing the button switch, the variation correction coefficient may be written into the nonvolatile memory and used as a fixed value.

(Embodiment 2)
FIG. 5 is a block diagram of an elevator push button switch according to another embodiment of the present invention, corresponding to FIG. 2 described above, and FIG. 6 is a flowchart for explaining the operation thereof. 4 corresponds to FIG.

  Although the elevator push button switch of the above-described embodiment is an orange single color illumination, the elevator push button switch of this embodiment enables full color illumination.

  That is, the elevator push button switch 1a of this embodiment includes first, second, and third LEDs 19 to 21 of red, green, and blue as a plurality of light sources. Brightness setting value and variation correction coefficient are given.

  This elevator push button switch 1a is provided with a control means 9a that applies a pulsed lighting drive signal to each of the LEDs 19-21 via current limiting resistors 26-28 to adjust the brightness and control the illumination color. The control means 9a stores the set value when the serial signal is a set value for the brightness of the LEDs 5 and 6, and the serial signal receiving unit 10a for receiving the serial signal from the central control panel 2. Memory 25a, individual variation correction unit 11a that corrects variations in brightness due to individual LEDs, temporal deterioration correction unit 12a that corrects LED temporal degradation, and settings used for the previous lighting drive A drive value storage unit 13a for storing a value as a drive value, and a drive signal for generating a pulse-shaped drive signal with a duty corresponding to the corrected set value or the previous drive value And a generation unit 14a.

  Since the configuration and operation of each part are the same as those in the above-described embodiment, the description thereof is omitted.

  According to this embodiment, the illumination color can be arbitrarily selected by selecting each setting value of the brightness of the first to third LEDs 19 to 21 of red, green, and blue.

  The present invention is useful as an elevator switch.

It is a figure which shows the pushbutton switch for elevators, and a central control board. It is a block diagram which shows the internal structure of the pushbutton switch for elevators. It is a figure which shows deterioration with time of the brightness of LED. It is a flowchart with which operation | movement description is provided. It is a figure which shows the internal structure of the pushbutton switch for elevators of other embodiment of this invention. It is a flowchart with which operation | movement description is provided.

Explanation of symbols

1,11-13,1a Elevator push button switch 2 Central control panel 5, 6, 19-21 LED
9, 9a Control means 11, 11a Individual variation correction unit 12, 12a Aging deterioration correction unit

Claims (6)

An elevator push button switch comprising a switch that operates in response to a push button pushing operation, and a plurality of light sources that illuminate the push button,
Control means for controlling the illumination color by adjusting the brightness of each light source by controlling the duty of a drive signal for driving each light source to turn on based on each set value of the brightness of each of the plurality of light sources. ,
The control unit includes a correction unit that corrects brightness variations of the light sources by correcting the setting values, and controls the duty based on the setting values corrected by the correction unit. A push button switch for elevators. An elevator push button switch comprising a switch that operates in response to a push button pushing operation, and a plurality of light sources that illuminate the push button,
Control means for controlling the illumination color by adjusting the brightness of each light source by controlling the duty of a drive signal for driving each light source to turn on based on each set value of the brightness of each of the plurality of light sources. ,
The control unit includes a correction unit that corrects the variation in brightness of each light source by correcting each set value, and corrects a decrease in brightness due to deterioration with time of each light source. The elevator push button switch, wherein the duty is controlled based on each corrected set value.   The said correction | amendment means contains the memory | storage part which stores the correction value which corrects the variation in the brightness of each said light source, and the correction | amendment part which correct | amends each said setting value based on the said correction value. Push button switch for elevator.   The correcting means corrects each set value based on the first storage unit storing a correction value for correcting the variation in brightness of each light source and the correction value of the first storage unit. 1 correction unit, a lighting time integration unit that integrates the lighting time of the push button switch, and each set value is corrected based on the integrated total lighting time and the degree of deterioration with time of the brightness of each light source. The elevator push button switch according to claim 2, further comprising a second correction unit.   The pushbutton switch for an elevator according to any one of claims 1 to 4, wherein the plurality of light sources are a red light emitting diode, a green light emitting diode, and a blue light emitting diode.   Each set value of brightness of each of the light sources and the correction value are given from the outside by a serial signal, and the serial signal includes a command code for designating whether it is a set value or a correction value. Item 5. An elevator push button switch according to Item 3 or 4.

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