JP2019102378A - LED lighting device - Google Patents

Abstract

An LED lighting apparatus that controls the brightness and color of LEDs according to a certain correlation, and when an LED other than the already lit LED is lit in the middle, is different from the previously lit LED When light emission is started with colors, multiple LEDs of different colors are present, which makes the user feel uncomfortable.
SOLUTION: A lighting function to increase the brightness at a constant speed until it matches the brightness of the already lit LED in the same color state as the color of the already lit LED, and the brightness by this lighting function In the process of increasing the brightness, when the brightness and the color of the already lit LED change, the brightness and the color of the LED on the way are matched with the brightness and the color of the already lit LED And a following function that changes instantly.
[Selected figure] Figure 5

Description

  The present invention relates to an LED lighting device that controls the brightness and color of a lighting device incorporating an LED.

  LED illumination using an LED as a light source is used for reasons such as low power consumption and long life. The brightness of the LED is approximately proportional to the current flowing through the LED, but the color temperature in the state where the current value is small and the brightness is dark is almost the same as the color temperature in the state where the current value is large and bright .

  On the other hand, incandescent bulbs, which are conventionally used for lighting, emit light when the filament is heated by passing current, so the current is low and the color temperature is low in the dark state, and a large amount of current is used to emit light In the state the color temperature is high. In order to reproduce the lighting condition of the incandescent lamp in a lighting device using an LED, in addition to controlling the brightness of the LED, it is necessary to change the color (color temperature). Therefore, it is possible to change the light emission color by incorporating two types of LEDs with different light emission colors in the LED lighting device, controlling the overall brightness of both LEDs, and changing the current ratio flowing to both of them. It is comprised (for example, refer patent document 1).

JP, 2016-62881, A (paragraph [0002])

  When lighting the room with the LED lighting device that reproduces the incandescent lamp whose color temperature changes with the change in brightness as described above, when lighting another LED that is in the light-off state, it lights up. If the color temperature of the LED that is being used is different from the color temperature of the LED that starts to emit light from the light off state, a sense of discomfort will be generated.

  In such a case, the brightness may be gradually brightened in a state in which the color temperature of the LED emitting light from the off state matches the color temperature of the already emitting LED. If the brightness is changed to the already emitting LED while the brightness is matched to the brightness of the already emitting LED, the color temperature also changes with the changing brightness. As a result, if the color temperature of the LED emitting light from the unlit state is fixed, the color temperature of the LED emitting the light does not match the color temperature of the LED.

  Then, this invention makes it a subject to provide the LED lighting apparatus which said problem does not generate | occur | produce in view of said problem.

  In order to solve the above problems, the LED lighting device according to the present invention has a light control function to adjust the brightness of the LED at the time of lighting, and a toning function to control the color of the LED at the time of lighting. The same as the color of the LED that has already been turned on, in the case of lighting other LEDs that are in the light-off state, in the LED lighting device that interlocks according to the preset correlation In the state of color, the lighting function to increase the brightness at a constant speed until it matches the brightness of the already lit LED, and the lighting function is already lit while increasing the brightness by this lighting function When the brightness and color of the LED change, the follow function to instantly change the brightness and color of the LED during lighting to match the brightness and color of the already lit LED And said that there were pictures.

  When the above-mentioned LED in the light-off state is turned on later, if the light-control toning is not performed on the already-lighted LED until the brightness of the already-lighted LED is matched, the light-off From the state in which the LEDs that were in the state reached the brightness of the LEDs that were already in the lit state, all the LEDs may be similarly controlled. In addition, when the light control operation is performed on the already-lit LED before the brightness of the LED turned on from the off-state matches the brightness of the already-lit LED, the unlit state The LEDs in the middle of lighting are dimmed to the same brightness as the already lit LEDs, and then all LEDs are similarly dimmed.

  In addition, after the brightness and color of the LED turned on after the above match the brightness and color of the LED that has already turned on, the synchronization function to match the brightness and the color of both LEDs and the LED turned on later are When the light is turned off first, it is desirable to provide a light-off function that reduces only the brightness while maintaining the color at the time of the light-off.

  As apparent from the above description, according to the present invention, in the state where the light modulation / toning LED is already turned on, the LED which is already turned on when the other lighted LED is turned on later Because the color temperature of the LED always matches the color temperature of the LED that is turned on later, there is no sense of discomfort.

The figure which shows an example of the bathroom to which the illuminating device of this invention is applied. Block diagram showing the structure of the lighting device of the present invention Diagram showing an example of the operation unit and remote control Graph showing dimming control state Second graph showing dimming control state

  Referring to FIG. 1, reference numeral 1 denotes a bathroom in which the LED lighting device according to the present invention is installed. Two LED lighting devices 21 are attached to the ceiling of the bathroom 1. In these two LED lighting fixtures 21, LEDs of two different colors are built. And the color (color temperature) as the LED lighting fixture 21 whole can be changed by changing the ratio of the light-emission quantity of two types of LED from which those colors differ. In addition, the brightness of the LED lighting device 21 can be changed by increasing or decreasing the total amount of current while keeping the ratio of the light emission amount constant. Such adjustment of color is toned, and adjustment of brightness is adjusted to light. Both of these dimming adjustments are performed by the LED lighting device 2.

  An LED lighting device 22 provided in the bathtub 11 is connected to the LED lighting device 2 as another LED lighting device. The bathtub 11 is provided with a jet bath function (not shown), and operates the bath remote controller 12 attached to the wall surface of the bathroom 1 to turn the jet bath function on and off. When the jet bath function is turned on, a motor (not shown) operates, but the LED lighting device 22 is turned on and off in conjunction with the on / off state of the motor. In addition, in this LED lighting fixture 22, similarly to the above-mentioned LED lighting fixture 21, LEDs of two different colors are built in, and the light control and color adjustment to this LED lighting fixture 22 can be achieved by the above-mentioned LED lighting device 2. To be done.

  The control of the LED lighting device 2 is performed by a remote control 3 for dimming control attached to a wall surface of the bathroom 1. The remote control 3 is connected to the LED lighting device 2 by wire, and the remote control 4 provided separately from the remote control 3 is configured to control the LED lighting device 2 wirelessly.

  Referring to FIG. 2, in this figure, one of the two LED lighting devices 21 will be described as an example. As described above, the LED lighting apparatus 21 is provided with two types of LEDs 21a and 21b having different colors at the time of light emission. Then, in these two types of LEDs 21a and 21b, transistors 23a and 23b, which are switching elements for independently controlling current values flowing to the respective LEDs 21a and 21b, are provided in series with the LEDs 21a and 21b. There is. A pulse signal is output from the microcomputer 5 to the transistors 23a and 23b2, and the microcomputer 5 adjusts the duty ratio of the pulse signal to control the current value flowing through each of the LEDs 21a and 21b.

  Generally, the brightness of the LED changes in proportion to the value of the current flowing through the LED. Therefore, the color (color temperature) of the LED lighting device 21 as a whole is changed by changing the ratio of the current values flowing to the LEDs 21a and 21b. Further, the brightness of the LED lighting device 21 can be increased or decreased by increasing or decreasing the current value as a whole while keeping the ratio of the current value constant.

  The resistors 24a and 24b are connected in series to the LEDs 21a and 21b, and the microcomputer 5 can detect the current value flowing to each of the LEDs 21a and 21b by taking in the voltage at the voltage dividing points a1 and b1.

  Similarly to the LED lighting fixture 21, the LED lighting fixture 22 is also provided with LEDs 22 a and 22 b of two different colors. The current flowing through both the LEDs 22a and 22b is controlled by the transistors 25a and 25b, and the controlled current value is obtained by microcomputering the voltage at the voltage dividing point a2 and b2 between the resistors 26a and 26b connected in series. It can detect by 5 taking in.

  Reference numeral 20 denotes a power supply for supplying DC power. For example, a normal power supply unit that rectifies AC power supplied from an external commercial power supply and outputs smoothed DC power may be used. Reference numeral 31 denotes an on / off switch, which is provided in the remote controller 3.

  Referring to FIG. 3, this figure shows the remote controller 3 and the wireless remote controller 4 attached to the wall of the bathroom 1. The remote control 3 is provided with the on / off switch 31. When the on / off switch 31 is pressed, the LED lighting device 21 which is turned off is turned on. The brightness of the lighted LED lighting device 21 is adjusted by the two dimmer switches 33 and 34, and the degree of the adjusted brightness is displayed on the display unit 32. When the desired brightness is set, pressing any of the preset switches 36 while pressing the set button 35 causes the brightness at that time to be associated with the pressed preset switch 36. Ru. When the on / off switch 31 is pressed to light the LED lighting fixture 21 and then the preset switch 36 is pressed, the brightness of the LED lighting fixture 21 changes to the brightness associated with the pressed preset switch 36 Do. The color (color temperature) of the LED lighting device 21 is correlated in advance with the brightness, and the correlation is stored in the microcomputer 5. Therefore, if the brightness of the LED lighting device 21 is changed, the color is also automatically adjusted along with the change in brightness.

  The remote controller 4 is provided with an on / off switch 41 having the same function as the on / off switch 31 described above. Further, dimmer switches 42 and 43 for adjusting the brightness of the LED lighting device 21 are provided, and further, a preset switch 44 interlocked with the preset switch 36 is provided. The preset switch 44 is automatically associated with the same brightness as the preset switch 36. The brightness of the LED lighting device 21 is automatically adjusted to the brightness associated with the preset switch 36 of the remote control 3 by pressing the preset switch 44 having the same number as the preset switch 36 of the remote control 3 and operating.

  Referring to FIG. 4, a curve T in the drawing indicates the correlation between the brightness and the color of the LED lighting device 21. When the on / off switch 31 or the on / off switch 41 is pressed, the LED lighting apparatus 21 gradually brightens from the lowest color temperature in the dimming range and reaches the left end of the curve T (S1 ). Thereafter, the light is automatically dimmed along the curve T to the right end of the dimming range, that is, the brightest state (S2). In addition, when the brightness becomes bright along the curve T, that is, the light is dimmed, the color (color temperature) of the LED lighting device 21 also changes in conjunction. As described above, when the on / off switch 31 or the on / off switch 41 is pressed, the LED lighting fixture 21 that has been turned off is automatically dimmed to the brightest state according to S1 to S2. After that, the brightness of the LED lighting device 21 can be changed to any position on the curve T by operating the light adjustment switches 33 and 34 or the light adjustment switches 42 and 43.

  Next, for example, when the light adjustment control state of the LED lighting device 21 is in the state shown by T1, the jet bath function is turned on, and interlocked therewith, the LED lighting device 22 in the bathtub 11 lights up from the unlit state Then, the color (color temperature) of the LED lighting device 22 is set to the same state as the color of T1, and the light is gradually brightened while maintaining the color, and light control is performed to the target brightness of T1. Here, the LED lighting apparatus 21 and the LED lighting apparatus 22 are both provided with a plurality of LED chips, and the above-mentioned brightness indicates the brightness per LED chip.

  As described above, after the dimming control state of the LED lighting device 22 which is turned on in the middle matches the state shown in T1, the LED lighting device 22 is light-controlled along the curve T together with the LED lighting device 21 . Further, when the jet bath function is turned off in the state shown in T2, the LED lighting device 22 is gradually darkened and extinguished while maintaining the color temperature in T2 (S6). When the on / off switch 31 or the on / off switch 41 is pressed again to turn off the LED lighting device 21, it moves to the left end of the curve T in any state of the curve T (S3), The brightness is reduced and the light is turned off while maintaining the color temperature from that state (S4).

  Next, referring to FIG. 5, when the LED lighting device 22 is turned on in the middle according to the above-mentioned S5, the LED lighting device 21 in a state before the dimming control state reaches T1, for example, a state shown by L. When the operation to change the brightness is performed, the light control / toning state of the LED lighting device 22 is changed from the state shown in L to the state shown in T1 immediately before changing the brightness of the LED lighting device 21; The dimming control state of the LED lighting device 22 is forcibly matched to the dimming control state of the LED lighting device 21.

  The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the scope of the present invention.

Reference Signs List 1 bathroom 2 LED lighting device 3 remote control 4 remote control 5 microcomputer 21 LED lighting device 22 LED lighting device

Claims (2)

  In the LED lighting device, which has a light control function to adjust the brightness of the LED at the time of lighting, and a toning function to control the color of the LED at the time of lighting, and interlocks the brightness and the color according to a preset correlation. When lighting other LEDs that are in the off state with one or more LEDs on, the brightness of the already lit LEDs is the same as the color of the already lit LEDs. The lighting function to increase the brightness at a constant speed until it matches, and when the brightness and color of the already lit LED change in the middle of increasing the brightness by this lighting function, it is in the middle of lighting What is claimed is: 1. An LED lighting apparatus comprising: a tracking function that instantaneously changes the brightness and color of the LED to match the brightness and color of the already lit LED.   After the brightness and color of the later-lit LED match the brightness and color of the already-lit LED, the synchronization function to match the brightness and color of both LEDs and the later-lit LED first The LED lighting device according to claim 1, further comprising: an extinguishing function for reducing only the brightness while maintaining the color at the extinguishing time when extinguishing the light.

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