JP7110743B2 - lighting equipment - Google Patents

Description

The present invention relates to lighting fixtures.

Patent Literature 1 discloses an organic EL display system combined with transparent solar cells. This organic EL display system consists of a solar cell that obtains power from the ultraviolet light of the display itself, a storage battery that stores and supplies the power, an optical sensor that detects the illuminance of the outside world, and an organic EL display that is integrated with the organic solar cell. , is equipped with This organic EL display system receives transmitted advertisement information and performs processing for outputting and displaying it on a transparent organic EL display.

JP-A-2005-70740

For example, when there is a message to a family member, it is common to send a message to a mobile terminal, but it is not always possible to notice the message. On the other hand, home appliances are required to have various functions in addition to general performance due to the trend toward IoT (Internet of Things). The same is true for LED lighting fixtures, and in addition to the lighting function, multifunctionality, design and interior design are required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting fixture capable of displaying information on a display unit.

A lighting fixture according to the invention of the present application includes an LED, a display unit that covers the LED and transmits the light of the LED, a control unit that controls information displayed on the display unit and the brightness of the LED, and the LED and an illuminance sensor that detects the emitted light , and the control unit changes the color of the display unit when the illuminance detected by the illuminance sensor is greater than a predetermined value, and the LED It is characterized by reducing light transmittance .

Other features of the invention will become apparent below.

ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can display information can be provided by providing the display part which covers LED and permeate|transmits the light of LED.

1 is a diagram showing an example of a lighting fixture according to Embodiment 1; FIG. 4 is a flow chart showing an operation example of the lighting fixture according to Embodiment 1. FIG. FIG. 10 is a diagram showing an example of a lighting fixture according to Embodiment 2; 9 is a flow chart showing an operation example of the lighting fixture according to Embodiment 2; FIG. 10 is a diagram showing an example of a lighting fixture according to Embodiment 3; 11 is a flow chart showing an operation example of the lighting fixture according to Embodiment 3. FIG. 14 is a flow chart showing an operation example of the lighting fixture according to Embodiment 4. FIG. FIG. 13 is a diagram showing an example of a lighting fixture according to Embodiment 5; 14 is a flow chart showing an operation example of the lighting fixture according to Embodiment 5. FIG. FIG. 13 is a diagram showing an example of a lighting fixture according to Embodiment 6;

A lighting fixture according to an embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same or corresponding components, and repetition of description may be omitted.

Embodiment 1.
FIG. 1 is a diagram showing an example of a lighting fixture according to Embodiment 1. FIG. This lighting fixture is embedded in the ceiling 9, for example. The lighting device 2 converts an AC voltage input from the commercial power supply 1 into a DC voltage, and outputs a constant current through constant current control. The output current is supplied to a plurality of LEDs 5 mounted on the LED module substrate 8, and the LEDs 5 are lit with constant brightness.

The LED module board 8 is attached to the housing 7 . A display unit 6 that covers the LEDs 5 and transmits light from the LEDs 5 is attached to the housing 7 . The display unit 6 is, for example, a transparent organic EL display.

The control unit 11 is connected to the lighting device 2 and the display unit 6 . The control unit 11 displays information on the display unit 6 and issues commands to the lighting device 2 to control the brightness of the LEDs 5 . Each function of the control unit 11 is implemented by a processing circuit. The processing circuit, even if it is dedicated hardware, is a CPU that executes programs stored in memory (Central Processing Unit, also referred to as a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor, DSP) may be Each function of the control unit 11 may be partly realized by dedicated hardware and partly realized by software or firmware. As such, the processing circuitry may implement each function in hardware, software, firmware, or a combination thereof.

The lighting fixture of FIG. 1 includes a wireless communication unit 4 that receives information to be displayed on the display unit 6 from a terminal 10 such as a remote controller or a smartphone. A dashed double-headed arrow indicates that the terminal 10 and the wireless communication unit 4 are capable of two-way communication. The control unit 11 causes the display unit 6 to display the information received by the wireless communication unit 4 .

The AC/DC converter 3 converts an AC voltage input from the commercial power source 1 into a DC voltage to generate a power supply voltage for the wireless communication unit 4 and the control unit 11 . For example, the power supply voltage of the display section 6 can be generated by the control section 11 and supplied to the display section 6 .

FIG. 2 is a flowchart showing an operation example of the lighting fixture according to Embodiment 1. FIG. First, in steps S<b>1 and S<b>2 , the wireless communication unit 4 receives character information from the terminal 10 and transmits the received information to the control unit 11 . As a result, processing by the control unit 11 surrounded by a dashed line starts. In steps S3-S5, the control section 11 reads the character information transmitted from the terminal 10 to the wireless communication section 4 and causes the display section 6 to display it. For example, the control unit 11 can perform control to display characters on the display unit 6 and at the same time dim the LED 5 to an arbitrary brightness to make the characters displayed on the display unit 6 more visible. That is, the control unit 11 can reduce the dimming rate of the LED 5 when displaying information on the display unit 6 .

Next, in step S6, it is determined whether or not characters have been displayed on the display unit 6 continuously for a predetermined period of time. If the predetermined time has passed, the character display on the display unit 6 is turned off in step S7, and control is performed to return the brightness of the LED 5 to its original value. That is, when the display of the information on the display unit 6 is finished, the control unit 11 restores the dimming rate of the LED 5 to the value before the information was displayed on the display unit 6 . The process of reducing the dimming rate of the LED 5 and then restoring it is shown in steps S8, S9 and S10.

The information that the control unit 11 receives from the wireless communication unit 4 is character information to be displayed on the display unit 6 or ON/OFF information of power supply to the display unit 6, that is, information such as ON/OFF of character display. The terminal 10 can receive information from the wireless communication unit 4 and display, for example, character information displayed on the display unit 6 on the terminal 10 . This enables confirmation of the display on the display unit 6 . The information to be displayed on the display unit 6 may be not only characters but also graphics. Also, wired communication may be performed instead of the wireless communication unit 4 .

Since the lighting fixture according to Embodiment 1 includes the display section 6 that transmits the light of the LEDs 5, it is rich in design and interior design, and can display arbitrary information on the display section 6. Since the lighting fixture according to the following embodiment has many similarities with the first embodiment, the description will focus on the differences from the first embodiment.

Embodiment 2.
FIG. 3 is a diagram showing an example of a lighting fixture according to Embodiment 2. FIG. This lighting fixture is obtained by adding a storage battery 12 to the lighting fixture of the first embodiment. The storage battery 12 is a device that charges power obtained from the commercial power supply 1, for example. As another example, the storage battery may have a solar battery and obtain power by light emission of the LEDs 5 . The storage battery 12 supplies power to the display unit 6 and the control unit 11 when the commercial power source 1 is not supplied.

FIG. 4 is a flow chart showing an operation example of the lighting fixture according to the second embodiment. At step Sa, the control unit 11 determines whether or not the commercial power source 1 is supplied. If the commercial power supply 1 is not supplied due to a power failure or the like, power is supplied from the storage battery 12 to the display unit 6 and the control unit 11 in step Sc. With the power supply secured in this way, characters are displayed on the display unit 6 based on the command from the terminal 10 in step Sd. According to the lighting fixture of Embodiment 2, characters can be displayed on the display unit 6 even if there is a power failure.

Embodiment 3.
FIG. 5 is a diagram illustrating an example of a lighting fixture according to Embodiment 3. FIG. This lighting fixture includes an illuminance sensor 13 that detects light emitted by the LED 5 . The control unit 11 displays information on the display unit 6 only when the illuminance detected by the illuminance sensor 13 is smaller than a predetermined value. This solves the problem that the characters displayed on the transparent display section 6 become difficult to see due to the brightness of the LEDs 5 .

FIG. 6 is a flow chart showing an operation example of the lighting fixture according to the third embodiment. When the control unit 11 receives commands from the wireless communication unit 4 in steps S1 and S2, the information of the illuminance sensor 13 is referred to in step S20. The illuminance sensor 13 detects light emitted by the LED 5 , detects whether or not the LED 5 is lit, and transmits the detection result to the control unit 11 . When the control unit 11 determines that the illuminance sensor 13 has detected light or that the brightness is equal to or higher than the predetermined brightness, the display on the display unit 6 is turned off in step S21. That is, when the LED 5 is lit, the character display on the display section 6 is turned off.

On the other hand, if it is determined in step S20 that the LED 5 is turned off or the illuminance is smaller than the predetermined value, information is displayed on the display section 6 in step S22. Such processing may be realized by changing the presence or absence of display on the display unit 6 according to the current of the LED 5 . According to Embodiment 3, by detecting that the lighting state of the LED 5 has changed and automatically controlling the ON/OFF of the character display on the display unit 6, it is displayed on the display unit 6 while the LED 5 is lighting. It can solve the problem that characters are difficult to see.

Embodiment 4.
Since the configuration example of the lighting fixture according to Embodiment 4 is the same as that of Embodiment 3, it can be represented by FIG. When a person looks up at the lighting fixture from directly below, the grains of the LEDs 5 that are lit up can be seen through the transparent display section 6, and depending on the place of use, there is a problem that it does not suit the scenery. Therefore, in the fourth embodiment, when the illuminance detected by the illuminance sensor 13 is greater than a predetermined value, the control unit 11 changes the color of the display unit 6 and reduces the light transmittance of the LED 5. . Since the transmittance of the LED light display section 6 is lowered, the grains of the LEDs 5 become less visible when a person looks up at the lighting fixture. For example, by changing the color of the display section 6 to the emission color of the LEDs 5 or a color close thereto, the grains of the LEDs 5 can be made difficult to see.

FIG. 7 is a flow chart showing an operation example of the lighting fixture according to the fourth embodiment. In step S<b>20 , when the illuminance sensor 13 detects that the LED 5 is on, the controller 11 is notified of this fact. In response to this, in step S25, the control unit 11 changes the color of the display unit 6 to make it difficult for the light from the LEDs 5 to pass through, making the grains of the LEDs 5 difficult to see. For example, the color of the display section 6 is brought closer to the emission color of the LED 5 .

On the other hand, in step S20, when the light from the LED 5 is darker than the predetermined brightness, the process proceeds to step S24, and the process of step S20 is performed again without changing the color of the display section 6. FIG. Based on whether the LED 5 is bright or dark with respect to a specific brightness, it is possible to switch whether or not the color of the display section 6 is changed.

Embodiment 5.
FIG. 8 is a diagram illustrating an example of a lighting fixture according to Embodiment 5. FIG. This lighting fixture has a human sensor 14 . The human sensor 14 detects, for example, a person below the lighting equipment. When the human sensor 14 detects a person, the control unit 11 displays information on the display unit 6 .

FIG. 9 is a flow chart showing an operation example of the lighting fixture according to the fifth embodiment. In step S30, it is determined whether or not a person is detected by the human sensor 14 while the display unit 6 is turned off. When a person is detected, the control section 11 causes the display section 6 to display information in step S31. For example, information may be displayed on the display unit 6 by blinking the information. Blinking information has the effect of emphasizing and informing a person of the information.

On the other hand, in step S30, if the presence of a person cannot be detected by the human sensor 14 for a certain period of time, the process proceeds to step S34. In step S34, the control unit 11 refrains from displaying characters on the display unit 6, and proceeds to step S30 again.

As described above, in the fifth embodiment, information is displayed on the display unit 6 when a person is detected by the human sensor 14 . Therefore, useless information display can be avoided.

Embodiment 6.
FIG. 10 is a diagram illustrating an example of a lighting fixture according to Embodiment 6. FIG. This lighting fixture includes the storage battery 12 described in the second embodiment, the illuminance sensor 13 described in the third embodiment, and the human sensor 14 described in the fifth embodiment, and has all the functions described above. The lighting fixture of Embodiment 6 can provide a multifunctional lighting fixture in which many functions are added to the lighting function.

REFERENCE SIGNS LIST 1 commercial power supply 2 lighting device 3 AC/DC converter 4 wireless communication unit 5 LED 6 display unit 7 housing 8 LED module substrate 9 ceiling 10 terminal 11 control unit 12 storage battery 13 illuminance sensor, 14 human sensor

Claims (9)

an LED;
a display unit that covers the LED and transmits light from the LED;
a control unit that controls information to be displayed on the display unit and the brightness of the LED;
an illuminance sensor that detects light emitted by the LED;
with
The lighting fixture , wherein the control unit changes the color of the display unit and reduces the light transmittance of the LED when the illuminance detected by the illuminance sensor is greater than a predetermined value. . 2. The lighting fixture according to claim 1, wherein the control unit reduces a dimming rate of the LED when displaying information on the display unit. 3. The lighting fixture according to claim 2, wherein the control unit restores the dimming rate of the LED to the value before the information was displayed on the display unit after finishing the display of the information on the display unit. A wireless communication unit that receives information to be displayed on the display unit from a remote control or a smartphone,
The lighting fixture according to any one of claims 1 to 3, wherein the control section causes the display section to display information received by the wireless communication section. 5. The lighting fixture according to any one of claims 1 to 4, further comprising a storage battery for supplying power to said display section and said control section when commercial power is not supplied. 6. The lighting fixture according to claim 5, wherein said storage battery has a solar battery, and power is obtained by light emission of said LED. 7. A device according to any one of claims 1 to 6, wherein said control unit causes said display unit to display information only when the illuminance detected by said illuminance sensor is smaller than a predetermined value. lighting equipment. Equipped with a human sensor,
8. The lighting fixture according to any one of claims 1 to 7 , wherein when the human sensor detects a person, the control unit causes the display unit to display information. 9. The lighting fixture according to claim 8 , wherein the information is displayed on the display unit by blinking the information.

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