JP2019216066A - Lighting apparatus - Google Patents

Abstract

To provide a rich lighting apparatus that can display information such as arbitrary characters or figures on a display unit such as an organic EL display in addition to a lighting function provided by a lighting apparatus having a general LED.SOLUTION: A lighting apparatus according to the invention of the present application includes an LED 5, a display unit 6 that covers the LED 5, and transmits light of the LED 5, and a control unit 11 that controls information to be displayed on the display unit 6 and brightness of the LED 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting fixture.

  Patent Document 1 discloses an organic EL display system combining transparent solar cells. This organic EL display system includes a solar cell that obtains power from ultraviolet light of the display itself, a storage battery that stores and supplies power, an optical sensor that detects external illuminance, and an organic EL display that is integrated with an organic solar cell. , Is provided. The organic EL display system performs a process of receiving the transmitted advertisement information and outputting and displaying the advertisement information on a transparent organic EL display.

JP 2005-70740 A

  For example, when there is a message to a family, a message to a portable terminal is common, but the message is not always noticed. On the other hand, in the home electric appliances, various functions are required in addition to general performance from the flow of IoT (Internet of Things). The same applies to LED lighting fixtures, and in addition to lighting functions, multifunctionality, design, and interior characteristics are required.

  The present invention has been made to solve the above-described problem, and has as its object to provide a lighting device capable of displaying information on a display unit.

  A lighting device according to the invention of the present application includes an LED, a display unit that covers the LED and transmits light of the LED, and a control unit that controls information displayed on the display unit and brightness of the LED. It is characterized by having.

  Other features of the present invention will be clarified 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 which permeate | transmits the light of LED.

FIG. 3 is a diagram showing an example of the lighting fixture according to Embodiment 1. 6 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 1. FIG. 9 is a diagram showing an example of a lighting fixture according to Embodiment 2. 9 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 2. FIG. 14 is a diagram showing an example of a lighting fixture according to Embodiment 3. 13 is a flowchart showing an operation example of the lighting fixture according to Embodiment 3. 13 is a flowchart showing an operation example of the lighting fixture according to Embodiment 4. 15 is a diagram illustrating an example of a lighting fixture according to Embodiment 5. FIG. 15 is a flowchart showing an operation example of the lighting fixture according to Embodiment 5. FIG. 17 is a diagram illustrating 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 or corresponding components are denoted by the same reference numerals, and repeated description may be omitted.

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

  The LED module board 8 is attached to the housing 7. A display unit 6 that covers the LED 5 and transmits light from the LED 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 controls the brightness of the LED 5 by displaying information on the display unit 6 and issuing a command to the lighting device 2. Each function of the control unit 11 is realized by a processing circuit. The processing circuit is a CPU (Central Processing Unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP) that executes a program stored in a memory, even if the processing unit is dedicated hardware. It may be. A part of each function of the control unit 11 may be realized by dedicated hardware, and a part may be realized by software or firmware. As described above, the processing circuit can realize each function by hardware, software, firmware, or a combination thereof.

  The lighting fixture of FIG. 1 includes a wireless communication unit 4 that receives information displayed on the display unit 6 from a terminal 10 such as a remote controller or a smartphone. The broken double-headed arrow indicates that the terminal 10 and the wireless communication unit 4 can perform bidirectional 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 supply 1 into a DC voltage, and generates a power supply voltage for the wireless communication unit 4 and the control unit 11. For example, the power supply voltage of the display unit 6 can be generated by the control unit 11 and supplied to the display unit 6.

  FIG. 2 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 1. First, in steps S1 and S2, the wireless communication unit 4 receives character information from the terminal 10, and transmits the received information to the control unit 11. Thus, the processing by the control unit 11 surrounded by the broken line starts. In steps S3-S5, the control unit 11 reads the character information transmitted from the terminal 10 to the wireless communication unit 4, and causes the display unit 6 to display the character information. For example, the control unit 11 can control the display of the characters on the display unit 6, and at the same time, darken the LED 5 to an arbitrary brightness to make the characters displayed on the display unit 6 easy to see. 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 are continuously displayed on the display unit 6 for a predetermined time. If the predetermined time has elapsed, the display of characters on the display unit 6 is turned off in step S7, and control is performed to restore the brightness of the LED 5 to the original value. That is, when the display of the information on the display unit 6 is finished, the control unit 11 returns the dimming rate of the LED 5 to the value before displaying the information on the display unit 6. The process of lowering the dimming rate of the LED 5 and then returning the dimming rate 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 cause the terminal 10 to display, for example, character information displayed on the display unit 6. This enables the display on the display unit 6 to be confirmed. The information displayed on the display unit 6 may be not only characters but also figures and the like. Further, wired communication may be performed instead of the wireless communication unit 4.

  Since the lighting apparatus according to Embodiment 1 includes the display unit 6 that transmits the light of the LED 5, the lighting apparatus is rich in design and interior, and can display any information on the display unit 6. Note that the lighting fixtures according to the following embodiments have many similarities to the first embodiment, and therefore the description will focus on the differences from the first embodiment.

Embodiment 2. FIG.
FIG. 3 is a diagram illustrating an example of a lighting fixture according to Embodiment 2. 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 include a solar cell and obtain power by emitting light from the LED 5. The storage battery 12 supplies power to the display unit 6 and the control unit 11 when the commercial power supply 1 is not supplied.

  FIG. 4 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 2. In step Sa, the control unit 11 determines whether or not the commercial power supply 1 is supplied. If there is a supply, the commercial power supply 1 supplies power to the display unit 6 and the control unit 11 in step Sb. 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. In such a state that the power supply is secured, the character display on the display unit 6 based on the instruction from the terminal 10 is performed in step Sd. According to the lighting fixture of the second embodiment, characters can be displayed on display unit 6 even if there is a power failure.

Embodiment 3 FIG.
FIG. 5 is a diagram illustrating an example of a lighting fixture according to Embodiment 3. This lighting device 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. Thereby, the problem that characters displayed on the transparent display unit 6 are difficult to see due to the brightness of the LED 5 can be solved.

  FIG. 6 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 3. When the control unit 11 receives a command from the wireless communication unit 4 in steps S1 and S2, 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 the LED 5 is lit, and transmits a detection result to the control unit 11. When the control unit 11 determines that the illuminance sensor 13 has detected light or determines that the brightness is equal to or higher than a predetermined brightness, the display of the display unit 6 is turned off in step S21. That is, when the LED 5 is turned on, the character display on the display unit 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 a predetermined value, information is displayed on the display unit 6 in step S22. Such a process 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 the third embodiment, by detecting that the lighting state of LED 5 has changed and automatically controlling on / off of the character display on display unit 6, the display is displayed on display unit 6 while LED 5 is on. The problem that characters are difficult to see can be solved.

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 lit LED 5 can be seen through the transparent display unit 6, and there is a problem that the view may not match the scene depending on the place of use. Thus, in the fourth embodiment, when the illuminance detected by the illuminance sensor 13 is larger than a predetermined value, the control unit 11 changes the color of the display unit 6 and decreases the light transmittance of the LED 5. . Since the transmittance of the display unit 6 for the LED light is reduced, when the person looks up at the lighting fixture, the grains of the LED 5 are difficult to see. For example, by changing the color of the display unit 6 to the light emission color of the LED 5 or a color close thereto, it is possible to make the grains of the LED 5 difficult to see.

  FIG. 7 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 4. In step S20, when the illuminance sensor 13 detects that the LED 5 is being turned on, the fact is transmitted to the control unit 11. 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 of the LED 5 to pass through, thereby making the particles of the LED 5 difficult to see. For example, the color of the display unit 6 is made closer to the emission color of the LED 5.

  On the other hand, when the light of the LED 5 is darker than the predetermined brightness in step S20, the process proceeds to step S24, and the process of step S20 is performed again without changing the color of the display unit 6. The presence or absence of a color change of the display unit 6 can be switched based on whether the LED 5 is bright or dark for a specific brightness.

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

  FIG. 9 is a flowchart illustrating an operation example of the lighting fixture according to Embodiment 5. In step S30, it is determined whether or not a person has been detected by the human sensor 14 while the display unit 6 is turned off. When a person is detected, the control unit 11 causes the display unit 6 to display information in step S31. For example, the display of information on the display unit 6 may be performed by blinking the information. Blinking information has the effect of informing people about the information.

  On the other hand, if it is determined in step S30 that the human sensor 14 cannot detect the presence of a person for a certain period of time, the process proceeds to step S34. In step S34, the control unit 11 refraines from displaying characters on the display unit 6, and proceeds to the process of step S30 again.

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

Embodiment 6 FIG.
FIG. 10 is a diagram illustrating an example of a lighting fixture according to Embodiment 6. This lighting fixture includes the storage battery 12 described in Embodiment 2, the illuminance sensor 13 described in Embodiment 3, and the human sensor 14 described in Embodiment 5, 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 a 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 board, 9 ceiling, 10 terminal, 11 control unit, 12 storage battery, 13 illuminance Sensor, 14 human sensor

Claims (10)

LED,
A display unit that covers the LED and transmits light of the LED;
A lighting device comprising: a control unit that controls information displayed on the display unit and brightness of the LED.   The lighting device according to claim 1, wherein the control unit reduces a dimming rate of the LED when displaying information on the display unit.   The lighting device according to claim 2, wherein the control unit returns the dimming rate of the LED to a value before displaying the information on the display unit after finishing displaying 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 device according to claim 1, wherein the control unit causes the display unit to display information received by the wireless communication unit.   The lighting device according to any one of claims 1 to 4, further comprising a storage battery that supplies power to the display unit and the control unit when there is no supply of commercial power.   The lighting device according to claim 5, wherein the storage battery includes a solar cell, and obtains power by emitting light from the LED. An illuminance sensor that detects light emitted by the LED,
7. The control device according to claim 1, wherein the control unit displays information on the display unit only when the illuminance detected by the illuminance sensor is smaller than a predetermined value. 8. lighting equipment. An illuminance sensor that detects light emitted by the LED,
The control unit, when the illuminance detected by the illuminance sensor is larger than a predetermined value, changes the color of the display unit and reduces the light transmittance of the LED. The lighting fixture according to any one of 1 to 6. Equipped with a human sensor,
The lighting device according to any one of claims 1 to 8, wherein the control unit displays information on the display unit when a person is detected by the motion sensor.   The lighting device according to claim 9, wherein the display of the information on the display unit is performed by blinking the information.

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