JP5311635B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device that keeps the average illuminance of a surface to be irradiated such as a floor surface or a desk surface substantially constant, for example, in a residential room, and in particular, energy saving by automatically adjusting light according to outside light. It relates to a possible lighting device.

  Conventionally, many techniques have been proposed in order to keep the illuminance of the illuminated surface of a lighting fixture installed on the ceiling of an office or the like constant.

  In view of this, the present inventor has already proposed an illumination device to which a display unit for displaying the height of the reflectance of the illumination area and the dimming control state is added to the outside (for example, see Patent Document 1).

In such a lighting device, the display unit has display light sources of three colors of red, green, and blue, and displays the analysis result of the control state determination unit. When it is determined that it is within the control range of the dimming control signal that can be used, green lights up, and when it is determined that the dimming control signal that keeps the light output at maximum output is being sent, red flashes. When it is determined that a dimming control signal that keeps the light output at the minimum output is continuously sent, the control state can be visually confirmed by blinking blue.
Japanese Patent No. 3373726 (FIG. 18, paragraph number 0041)

  However, since the lighting device disclosed in Patent Document 1 automatically performs dimming control and the dimming change speed is slow, whether the light source is operating normally according to the change in external light is determined by the light source. Even if it sees, it can hardly be distinguished. In particular, when such a technology is used for residential ceiling lights, the general user who is the user purchases it with the expectation of energy saving by reducing the output according to the external light, so it works properly. I am worried about it.

  Therefore, it can be confirmed when the maximum value or the minimum value of the control range is reached, but there is a possibility that it is not possible to confirm what operation is performed within the control range.

  The present invention has been made to satisfy the above-described demands, and an object of the present invention is to provide a lighting device that can be satisfied by being able to confirm the increase / decrease in light output in accordance with changes in external light.

Lighting device according to the present invention, the light output of the light source, a lighting circuit for controlling according to the dimming signal, from the irradiated surface of the light source, receives the reflected light of the emitted light of the light source reflected light and the external light It has an illuminance detection unit that converts it into voltage and an automatic dimming function that controls the light output of the light source , and can be used or not used , and the automatic dimming function can be used. If you are the outputs of the dimming signal to the lighting circuit, and a control unit for adjusting the light output of the light source in the lighting circuit lights up during use of the previous SL automatic light function and the An operation display unit that blinks only during adjustment of light output, and when the detection value output from the illuminance detection unit is lower than the target value, the control unit is substantially the same as the target value. The light output of the light source is stepped by the dimming signal until a match is reached, If the detection value output by the illuminance detection unit is higher than the target value, the light output of the light source is stepped until the detection value substantially matches the target value. And at a second speed that is slower than the first speed, the operation display unit turns off and flashes once for a predetermined time each time the light output of the light source changes stepwise. , Notifying whether the light output of the light source is increasing or decreasing .

In the present invention, the operation display section lights up during use of the automatic light control function, and blinks only during adjustment of the light output.
Therefore, it is turned on when performing automatic dimming, and blinks when adjusting the light output, so that whether or not the automatic dimming is performed and whether or not the light output is adjusted. This behavior is clearly displayed to the user.
Therefore, since the increase / decrease of the light output according to the change of the external light can be confirmed, the user can be satisfied.

In the present invention, the number of blinks of the operation display section is clearly different between when the light output increases and when it decreases.
Therefore, those operations can be made easier to understand.

In the illuminating device according to the present invention, when the control unit changes the light output of the light source stepwise, the change width per change is the same regardless of increase or decrease of the light output of the light source. In the case where the light output of the light source is decreased stepwise, the light output of the light source is decreased stepwise once every predetermined time, and the light output of the light source is increased stepwise, The light output of the light source is increased stepwise at least twice per the predetermined time .

In the present invention, when reducing the light output, for example, the duty of the dimming signal is continuously changed 5 times from 2% every 2 seconds from 40% to 300% in 10 seconds. On the other hand, when the light output is increased, for example, the duty of the dimming signal is increased from 20% to 40% in 10 seconds, 2% per second, which is approximately twice or more times when the light output is decreased. It is continuously changed 10 times and the operation display unit is turned off for 0.3 seconds every time it is changed once.
Therefore, the blinking speed of the operation display unit between when the light output increases and when the light output decreases is approximately twice or more, so that the difference between these operations can be further easily understood.

According to the illuminating device of the present invention, the operation display unit that is turned on while using the automatic dimming function and blinks only while adjusting the light output is provided.
Thereby, it has the effect that satisfaction can be obtained by being able to confirm even the increase / decrease of the light output according to the change of external light.

  Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, a lighting device 10 according to an embodiment of the present invention includes a residential ceiling-type lighting fixture 11 and an infrared remote control device 12.

  The luminaire 11 incorporates an illuminance detection unit (sensor unit) 14 and an operation display unit 15 in a part of the frame 13. The lighting fixture 11 has a fixture fixing portion / power source connection portion 17 disposed in the center of the disk-shaped casing 16. The fixture fixing unit / power supply connection unit 17 is attached to a hook-type appliance mounting unit (not shown) / AC power supply unit (not shown) installed on the ceiling surface 1 so as to be electrically connectable. The illuminance detection unit 14 detects reflected light from the illuminated surface of the fluorescent lamp 18 and converts it into a voltage.

  For the illuminance detection unit 14, for example, a sensor element capable of detecting brightness such as CdS (cadmium sulfide), PD (photodiode), or photo IC is applied. The sensor element may include an infrared cut function for detecting only a visible light component, or an infrared cut filter may be provided outside.

  About the attachment position of the illumination intensity detection part 14, if the direct light of the lighting fixture 11 is not detected, arrangement | positioning will not be specifically limited. For example, in order to give a degree of freedom to the detection range, it may be assembled at a position separated from the luminaire 11 independently.

  The operation display unit 15 includes an operation display LED (see FIG. 4) 38 that performs light emission display at a position that is easy to see from a floor surface (not shown) facing the ceiling surface 1. The operation display LED (see FIG. 3) 38 is not particularly limited, and may be anything that can be seen by the user such as a miniature bulb instead of the LED, but the LED is optimal in consideration of power consumption. It is.

The operation display LED 38 of the operation display unit 15 is turned on during use of the automatic light control function and blinks only during adjustment of the light output.
Therefore, it is turned on when performing automatic dimming, and blinks when adjusting the light output, so that whether or not the automatic dimming is performed and whether or not the light output is adjusted. This behavior is clearly displayed to the user.

  The casing 16 of the luminaire 11 has a fluorescent lamp 18 as a main light source, a lighting circuit 19 for the fluorescent lamp 18 and a remote control receiver 20, and the light from the fluorescent lamp 18 is directed toward the bottom surface, that is, the floor surface facing the ceiling surface 1. It is assembled together with the reflector 21 for reflecting in the direction. The lower surface of the lighting fixture 11 is covered with a resin cover 22 having translucency. The luminaire 11 and the fluorescent lamp 18 may not be the illustrated round shape, but may be, for example, a square shape. Further, it may be a pendant type with an open bottom surface that does not include the cover 22. The main light source may be an incandescent lamp instead of the fluorescent lamp 18.

  The remote control receiver 20 includes a light receiving element 23 for receiving an infrared remote control signal Q and an LED (light emitting diode) nightlight 24. The LED night light 24 may be a miniature light bulb instead of the LED. When the main light source is an incandescent lamp, and when the LED night light 24 is a miniature light bulb, it is preferable to perform lighting and dimming control by phase control of an AC power source. The configuration, instrument structure, and arrangement of the remote control receiver 20 and the lighting circuit 19 are not limited to those illustrated.

  The remote control device 12 includes an infrared LED 25 for transmitting a remote control signal Q, an operation button 26 for operating the lighting fixture 11, and a setting button 27 for performing various settings. The communication means for transmitting and receiving the remote control signal Q does not have to be infrared, for example, a weak radio, a specific low power radio, or the like.

  As shown in FIG. 3, the remote control receiving unit 20 includes a drive unit 28, a calculation unit 29, a storage unit 30, and a control unit (microcomputer) 32 having a built-in timer unit 31. The control unit 32 has an automatic dimming function for adjusting the light output so that the detection value output by the illuminance detection unit 14 substantially matches the target value corresponding to the desired brightness according to the stored program. It controls the operation to switch between using and not using the automatic dimming function.

  The lighting circuit 18 is connected to an AC power source through the filter 33 to output DC power, and the DC power output from the power factor improvement unit 34 is converted into AC power by inversion to the fluorescent lamp 18. The inverter part 35 to supply and the control part 36 are provided.

  The remote control device 12 includes a control unit 37. The main applications of the operation button 26 are all lighting of the fluorescent lamp 18, dimming, lighting of the LED night lamp 24, raising the dimming level, lowering the dimming level, turning off, automatic dimming (constant illumination control).

  The setting button 27 includes a brightness setting button (not shown) for setting a target value and a correction button (not shown) for correcting a shift in detection voltage due to a difference in reflectance of the irradiated surface.

  Next, as an example of the basic operation of the lighting device 10, a case where all the fluorescent lamps 18 are turned on will be described.

  When the all lamp button on the operation button 26 of the remote control device 12 is pressed, a remote control signal Q for performing all lamps of the fluorescent lamp 18 is transmitted from the infrared LED 25.

  In the luminaire 11, the light receiving element 23 of the remote control receiver 20 receives the remote control signal Q. The remote control receiving unit 20 determines the remote control signal Q by the control unit 32 and outputs a dimming signal for performing all of the fluorescent lamps 18.

  The dimming signal is, for example, a duty signal (having an operating frequency of about 1 kHz), and dimming control is performed by changing the duty ratio.

  At this time, the remote control receiving unit 20 stores a duty data table corresponding to the dimming ratio in the storage unit 30 in advance, and outputs a duty signal corresponding to the received remote control signal Q.

  The luminaire 11 is a fluorescent lamp luminaire that can be dimmed continuously in the range of 10 to 100% according to the duty signal, and lights up 100% of the rated output when the duty ratio of the duty signal is 100%. It is set to turn on 10% when the duty ratio is 10%.

  Here, the output from the illuminance detection unit 14 is set in a range of 0 to 5 V, for example, according to the incident light. When the voltage is 0 V, there is no incident light (dark state). Bright state). The remote control receiving unit 20 and the lighting circuit 19 are connected by a signal line, and the control unit 36 of the lighting circuit 19 receives the dimming signal and turns the output of the inverter unit 35 to the full lamp output. Thereby, the fluorescent lamp 18 is fully lit.

  Next, the automatic light control function of the illumination device 10 will be described.

  When the automatic dimming button provided on the operation button 26 of the remote control device 12 is pressed, the lighting is first performed at the dimming level at which the target value is set, and the output of the lighting fixture 11 is controlled so that the measured illuminance value matches the target value To do.

  At this time, the control unit 32 of the remote control receiving unit 20 sets the target value to 560 Lx (output) assuming that the average illuminance of the irradiated surface at all lamp outputs (100%) is 700 Lx and the lower limit output (10%) is 70 Lx. 80% equivalent).

  The control unit 32 of the remote control receiver 20 sets the light output to 80% when the external light is zero (0), and the illuminance detection value becomes constant at about 560 Lx while decreasing the light output as the external light increases. Feedback control.

  When the external light is 490 Lx or more, the light output does not decrease to 10% or less, so that the average illuminance of the irradiated surface increases to 560 Lx or more as the external light increases. In addition, when the light is turned off, the outside light is outside the illuminance constant control range with 560 Lx or more.

  Next, a specific control operation of the control unit 32 for the automatic light control function of the lighting device 10 will be described.

  The illuminance data measured ten times every other second is temporarily stored in the storage unit 30 by using a clock timer or the like built in the timer unit 31. Of the illuminance data stored in the storage unit 30, an average value of 8 times excluding the maximum value and the minimum value is calculated by the calculation unit 29 and used as the detected illuminance value.

  Then, the duty of the dimming signal is changed by, for example, 2% every second so that the detected illuminance value approaches the illuminance target value, and each time the illuminance data is measured and ± 5 of the illuminance target value is obtained. It is judged whether it is within%.

  Even if the output increase direction is 10 times continuously and the output decrease direction is repeatedly changed 5 times continuously, if it is not within ± 5% of the illuminance target value, illuminance measurement is performed 10 times every second. The duty of the dimming signal is changed by 2% every second so as to approach the illuminance target value, and the above operation is repeated until it falls within ± 5% of the illuminance target value. Such an operation is performed by a microcomputer program in the control unit 32.

  Next, the display of the operation display unit 15 will be described using the relationship between the duty of the dimming signal over time and the blinking operation of the operation display LED 38.

  As shown in FIG. 4, the operation in the case of decreasing the optical output is continuously performed from time t13 to time t23 by 2% every 2 seconds from 40% to 300%, for example, for 10 seconds. Change 5 times. Then, in synchronization with this change, the operation display LED 38 blinks the same number of times.

  Unlike this, the operation for increasing the optical output is from the time t2 to the time t12, for example, the duty of the dimming signal from 20% to 40% in 10 seconds, approximately twice the number of times when the optical output decreases. It is changed 10 times continuously by 2% every second. Each time it is changed, the operation display LED 38 is turned off for the same number of times synchronized with this change for 0.3 seconds. When the automatic light control function is not used, the operation display LED 38 is turned off.

As described above, the operation display LED 38 has a blinking speed that is clearly different between when the light output increases and when the light output increases, and the number of blinks when the light output increases and decreases is set to double. Has been.
Therefore, the difference between these operations can be easily understood.

In the present embodiment, the operation display LED 38 of the operation display unit 15 is lit while the automatic dimming function is used, and blinks only during adjustment of the light output.
Therefore, it is turned on when performing automatic dimming, and blinks when adjusting the light output, so that whether or not the automatic dimming is performed and whether or not the light output is adjusted. Such an operation can be clearly displayed to the user.
Thereby, since the increase / decrease in the light output according to the change of external light can be confirmed, a satisfaction can be given to a user.

In the present embodiment, the number of blinks of the operation display LED 38 of the operation display unit 15 is clearly different between when the light output increases and when the light output decreases.
Thereby, those operations can be easily understood.

In the present embodiment, when the light output is decreased by the control unit 32, for example, the duty of the dimming signal is continuously changed 5 times 2% every 2 seconds from 40% to 300% for 10 seconds, and this change is performed. The operation display LED 38 blinks the same number of times in synchronism with. In contrast to this, when increasing the light output, for example, the duty of the dimming signal is increased from 20% to 40% for 10 seconds, and continuously 2% per second, which is twice the number of times when the light output is decreased. The operation display LED 38 is extinguished for 0.3 seconds each time it is changed 10 times.
Thereby, since the number of times of blinking of the operation display unit between when the light output increases and when the light output decreases, the difference in the operations can be easily understood.

  In addition, the lighting fixture 11, the remote control device 12, and the fluorescent lamp 18 used in the embodiment are not limited to the illustrated shapes, and can be appropriately changed.

The side view of the illuminating device of one Embodiment which concerns on this invention. Bottom view of the lighting device shown in FIG. Block diagram of the lighting device shown in FIG. FIG. 1 is a relationship diagram between the duty of a dimming signal and the blinking operation of an operation display unit with respect to the passage of time of the lighting device shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 11 Lighting fixture 12 Remote control device 14 Illuminance detection part 15 Operation | movement display part 18 Fluorescent lamp (light source) (main light source)
19 lighting circuit 32 control part

Claims (2)

A lighting circuit for controlling the light output of the light source according to the dimming signal ;
An illuminance detector that receives reflected light of external light from the irradiated surface of the light source and reflected light of the emitted light of the light source and converts it into a voltage;
The lighting circuit has an automatic dimming function for controlling the light output of the light source , and can be switched between use and non-use of the automatic dimming function. A controller that outputs the dimming signal and causes the lighting circuit to adjust the light output of the light source ;
An operation display unit that lights up during use of the prior SL auto dimming, and blinking only during adjustment of the light output,
Have
The controller is
When the detection value output by the illuminance detection unit is lower than the target value, the light output of the light source is stepped in accordance with the dimming signal until the detection value substantially matches the target value. When the detection value output by the illuminance detection unit is higher than the target value, the light output of the light source is stepped in accordance with the dimming signal until the detection value substantially matches the target value. And at a second speed that is slower than the first speed,
Each time the light output of the light source changes stepwise, the operation display unit turns off and blinks for a predetermined time, and increases or decreases the light output of the light source. An illuminating device for notifying whether or not it is in a state . The controller is
When changing the light output of the light source stepwise, the change width per change is the same regardless of the increase or decrease of the light output of the light source,
When reducing the light output of the light source stepwise, once per predetermined time, the light output of the light source is reduced stepwise,
In the case where the light output of the light source is increased stepwise, the light output of the light source is increased stepwise twice or more per the predetermined time,
The lighting device according to claim 1.

Images