JP6704763B2 - LED lighting equipment - Google Patents

Description

The present invention relates to an LED lighting device.

2. Description of the Related Art In recent years, luminaires using LED (Light Emitting Diode) elements (hereinafter, LED luminaires) have become popular. Patent Document 1 below discloses a lighting device that is attached to a socket of a straight tube type fluorescent lamp and receives power from the socket of the fluorescent lamp to turn on an LED element. In this lighting device, a lighting power supply device having a built-in lithium ion battery is provided in a lighting lamp body cover to which the LED lighting tube is attached, and the lithium ion battery is discharged at the time of a power failure to supply power to the LED lighting tube. In addition, a USB socket is provided in a lighting body cover of this lighting device. A mobile phone is connected to the USB socket to charge the mobile phone, or a PC (Personal Computer) is connected to the USB socket to perform lighting. It is disclosed to read and write the internal memory of the power supply device for use.

Japanese Patent No. 5811601

By the way, in recent years, various IoT (Internet of Things) services have been proposed. IoT devices such as various sensors and communication devices used to provide IoT services require electric power. A small IoT device such as a beacon transmitter can be driven by a battery, but the battery must be replaced regularly.

Since electric power is supplied to the lighting device, it is possible to connect the IoT device to the USB port for use by providing a USB port on the cover of the lighting device body of the lighting device as described in Patent Document 1. However, in the case of Patent Document 1 described above, a USB port is provided on the cover of the illuminating lamp body, so installation work for the USB port is required. In addition, since the USB port is fixed to the main body cover of the illumination lamp, the position where the IoT device is installed is limited.

It is an object of the present invention to provide a technique that can improve the degree of freedom of arrangement of devices that can be connected to a USB without requiring installation work of a USB port.

An LED lighting apparatus according to the present invention includes an LED light source having an LED light source, a control circuit for controlling the LED light source, and a pair of end caps attached to both ends of the LED light, and one of the end caps is provided. , A USB port connected to the control circuit, and one of the end caps has an electrode connected to the control circuit and supplied with AC power.

According to this configuration, the LED lighting fixture includes an LED lamp having an LED light source and a control circuit that supplies electric power to the LED light source, and a pair of end caps attached to both ends of the LED lamp. The LED lighting device has an electrode on either one of the pair of end caps, and a control circuit provided in the LED lamp supplies AC power supplied from the electrode to the LED light source for lighting. Also, a USB port connected to the control circuit is provided on either one of the pair of end caps. Therefore, installation work of a USB port for connecting a USB-compatible device is unnecessary, and the USB-compatible device can be connected to the USB port wherever the LED lighting device is installed.

Further, in the LED lighting apparatus, the USB port may be provided on one of the end caps, and the electrode may be provided on the other of the end caps.

According to this configuration, the USB port is provided in the end cap different from the end cap provided with the electrodes. Therefore, as compared with the case where a USB port is provided on the end cap having the electrodes, it is easier to secure a space for providing the USB port.

Further, in the above LED lighting device, the USB port may be provided so as to open on the light emitting surface side of the LED light source.

According to this configuration, the space on the light emitting surface side of the LED light source is generally wider than the space on the opposite side of the light emitting surface of the LED light source, and thus it is easy to connect a USB compatible device to the USB port.

Further, in the above LED lighting apparatus, the control circuit may control the LED light source based on a control signal input via the USB port.

According to this configuration, the LED light source can be controlled for each LED lighting fixture via the USB port provided in the LED lighting fixture.

FIG. 1 is a top view schematically showing the top surface of the LED lighting device in the embodiment. FIG. 2 is a cross-sectional view schematically showing the AA cross section of the LED lighting fixture shown in FIG. 1. FIG. 3 is a schematic diagram showing a state in which the LED lighting device shown in FIG. 1 is attached to a fixture for a straight tube fluorescent lamp. FIG. 4 is a block diagram showing a configuration example of the control circuit in the embodiment and a connection relationship between the control circuit and the USB port. FIG. 5A is a top view schematically showing the top surface of the LED lighting device in the modification example (2). FIG. 5B is a side view schematically showing the side surface of the LED lighting fixture in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same or corresponding components in the drawings are designated by the same reference numerals and the same description will not be repeated.

FIG. 1 is a top view schematically showing the top surface of the LED lighting device according to the present embodiment. FIG. 2 is a cross-sectional view schematically showing the AA cross section of the LED lighting fixture 1 shown in FIG. Hereinafter, the configuration of the LED lighting device 1 will be described with reference to FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the LED lighting device 1 includes an LED lamp 11 and cap portions (end caps) 12L and 12R provided at both ends of the LED lamp 11.

The LED lamp 11 has a cylindrical shape extending in the X-axis direction. As shown in FIG. 2, the LED lamp 11 is covered with a lighting cover 11a made of a material such as transparent or translucent resin. A substrate 14, an LED light source 15 in which a plurality of LED elements 15a are connected in series, and a control circuit 16 are provided inside the illumination cover 11a of the LED lamp 11.

The board 14 has a drive circuit (not shown) for driving the LED light source 15 provided on the board 14, and is electrically connected to the control circuit 16.

Each LED element 15a of the LED light source 15 is composed of, for example, a white light emitting diode, and is arranged on the substrate 14 at regular intervals.

The control circuit 16 converts an AC voltage into a DC voltage and a converted DC voltage into a predetermined voltage. The details of the control circuit 16 will be described later.

The cap portions 12L and 12R have caps 121L and 121R and pins 122L and 122R, respectively. The bases 121L and 121R have a cylindrical shape with a diameter larger than that of the LED lamp 11, and are made of a resin material such as polycarbonate.

The pins 122L and 122R are respectively provided at the ends of the caps 121L and 121R on the side opposite to the LED lamp 11. The pins 122L and 122R have a shape that can be attached to the socket of an existing fluorescent lamp.

As shown in FIG. 3, the LED lighting device 1 has pins 122L and 122R mounted and fixed to a socket 201 of a device 20 for mounting a straight tube fluorescent lamp (hereinafter, mounting device). In the present embodiment, the pin 122L is electrically connected to the control circuit 16 and supplies the control circuit 16 with the AC power supplied from the socket 201. On the other hand, the pin 122R is not electrically connected to the control circuit 16 and does not supply power to the control circuit 16. That is, in this example, the pin 122L functions as an electrode that supplies electric power to the control circuit 16, while the pin 122R functions as a support member used to support the LED lighting fixture 1.

Further, in FIGS. 1 and 2, a USB port 123 is provided on the upper surface (the positive direction of the Z axis) of the base 121R. That is, the USB port 123 has an opening on the light emitting surface side of the LED light source 15 so that the USB connector is inserted from the upper surface (Z-axis positive direction) of the base 121R toward the lower surface (Z-axis negative direction). It is supported in the internal space of. In the present embodiment, the control circuit 16 and elements (not shown) such as wirings for connecting the pin 122L and the control circuit 16 are provided inside the base 121L. The element is not placed. Therefore, in this embodiment, the internal space of the base 121R is used for the USB port 123.

The USB port 123 corresponds to the standard of USB 2.0 or USB 3.0. The USB port 123 is electrically connected to the control circuit 16 via a signal line (not shown).

In this example, the USB port 123 has four terminals (power supply terminal (GND, +5v), data terminal (D+, D-)). A wireless communication device (not shown) compatible with the USB 2.0 standard is connected to the USB port 123, for example. The wireless communication device is driven by being supplied with electric power of a DC voltage of 5v via a power supply terminal (GND, +5v) of the USB port 123. The wireless communication device receives a dimming control signal for dimming the LED light source 15 by wireless communication. Then, the wireless communication device inputs the voltage signal based on the received dimming control signal to the control circuit 16 via the data terminals (D+, D−) of the USB port 123. In the present embodiment, analog dimming and PWM dimming are used as the dimming method of the LED light source 15. For example, a dimming control signal for analog dimming is input to the data terminal (D−), and the data terminal ( A dimming control signal for PWM dimming is input to D+).

FIG. 4 is a diagram showing a configuration example of the control circuit 16 and a connection between the control circuit 16 and the USB port 123 in this case. As shown in FIG. 4, the control circuit 16 has an AC/DC converter 161, a DC/DC converter 162, and a dimming control circuit 163.

The AC/DC converter 161 is connected to the pin 122L, and converts the AC voltage (for example, 100v) supplied from the socket 201 in which the pin 122L is mounted to the DC voltage (for example, 32v).

The DC/DC converter 162 is connected to the power supply terminal (GND) 1231 and the power supply terminal (+5v) 1232 of the USB port 123. The DC/DC converter 162 converts the DC voltage converted by the AC/DC converter 161 into a predetermined DC voltage (for example, +5v).

The dimming control circuit 163 is connected to the data terminal (D+) 1233 and the data terminal (D−) 1234. The dimming control circuit 163 supplies the DC voltage converted by the AC/DC converter 161 to the LED light source 15 based on the dimming control signal input to the data terminal (D+) 1233 or the data terminal (D−) 1234. To do. That is, when the dimming control signal for PWM dimming is input to the data terminal (D+) 1233, the dimming control circuit 163, based on the dimming control signal, applies a DC voltage (32v or 0v) to the LED light source 15. Is applied to control the turn-on time and turn-off time of the LED light source 15 to perform dimming. When a dimming control signal for analog dimming is input to the data terminal (D−) 1234, the dimming control circuit 163 applies a DC voltage corresponding to the dimming control signal to the LED light source 15. Dimming.

In the embodiment described above, the LED lighting fixture 1 is attached to an existing fixture for a fluorescent lamp. The LED lighting device 1 turns on the LED light source 15 by the electric power supplied from the pin 122L provided on the one base portion 12L. Further, the LED lighting apparatus 1 converts the DC power converted from the AC power supplied from the pin 122L into a predetermined voltage and supplies the DC voltage to the USB port 123 provided in the one cap portion 12R. Therefore, the LED lighting device 1 can be used anywhere where the existing fixture for the fluorescent lamp is provided, so that the USB compatible device can be installed without performing installation work for connecting the USB compatible device. Can be connected.

Further, as in the above-described embodiment, by connecting a wireless communication device to the USB port 123 of the LED lighting fixture 1, even when a large number of LED lighting fixtures 1 are installed, each LED lighting fixture 1 In addition, it is possible to control the light from the outside through a wireless communication device.

Further, in the above-described embodiment, the LED lighting fixture 1 is attached to the attachment fixture 20, as shown in FIG. In this case, the space on the opposite side (Z axis negative direction) of the light emitting surface (Z axis positive direction) of the LED light source 15 is narrower than the space on the light emitting surface side. Therefore, in the base 121R, if the USB port 123 is provided on the surface opposite to the light emitting surface of the LED light source 15, the installation space for the USB compatible device becomes narrow and it is difficult to connect the USB compatible device. On the other hand, by providing the USB port 123 on the surface on the light emitting surface side as shown in FIG. 3, the installation space of the USB compatible device is expanded and the USB compatible device can be easily connected.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

(1) In the above-described embodiment, the example in which the USB port 123 is provided on the base 121R provided with the pin 122R that functions as a support member has been described, but the position at which the USB port 123 is provided is not limited to this. That is, if there is a space in which the USB port 123 can be installed inside the base 121L provided with the pin 122L that functions as an electrode, the base 121L may be provided with the USB port 123. In addition, in the above-described embodiment, the USB port 123 is provided on the surface of the base 121R on the light emitting surface side of the LED light source 15 with respect to the LED light source 15, but the mounting fixture 20 of the LED lighting fixture 1 and the LED lighting fixture 1 are provided. If there is a space in which a USB device can be attached, it may be provided on the surface opposite to the light emitting surface. In short, the USB port 123 may be provided on the base portion (end cap) provided at one end of the LED lamp 11.

(2) In the above-described embodiment, the LED lighting device 1 in which the base portions 12L and 12R having the pins 122L and 122R are provided at both ends of the LED lamp 11 has been described, but the shape of the LED lighting device is not limited to this. Instead, for example, the LED lighting fixture shown in FIG. 5 may be used. The LED lighting fixture 1A shown in FIG. 5 can be mounted in a socket of a conventional compact fluorescent lamp, and has an LED lamp 11 having a shorter length than the LED lighting fixture 1. The LED lighting fixture 1A shown in FIGS. 5A and 5B has end caps 1210a and 1210b at both ends of the LED lamp 11. The end cap 1210a is provided with four pins 1220a to 1220d, and the end cap 1210b is provided with a USB port 123.

The four pins 1220a to 1220d of the end cap 1210a are attached to a socket of a conventional compact fluorescent lamp, two of the pins 1220a to 1220d function as electrodes, and the other two pins are supported. Functions as a member. Although not shown, as in the above-described embodiment, the LED light source 15 disposed on the substrate 14 and the control circuit 16 are provided inside the LED lamp 11. Two of the pins 1220a to 1220d that function as electrodes are electrically connected to the control circuit 16 inside the end cap 1210a. In FIG. 5, the light emitting surface of the LED light source 15 in the LED lamp 11 is the surface on the negative side of the Z axis. In the present modification, the USB port 123 provided on the end cap 1210b is provided on the light emitting surface side of the LED light source 15, but the position of the USB port 123 is not limited to this.

(3) In the above embodiment, an example in which a wireless communication device is connected to the USB port 123 has been described, but the device connected to the USB port 123 is not limited to this. For example, it may be a device such as a sensor or a camera that corresponds to the standard of the USB port 123 and can be driven by the DC voltage supplied to the power supply terminal of the USB port 123.

1, 1A... LED lighting fixture, 11... LED lamp, 11a... Lighting cover, 12L, 12R... Base part (end cap), 14... Board, 15... LED light source, 15a... LED element, 16... Control circuit, 20... Mounting device, 201... Socket, 121L, 121R... Base, 122L, 122R, 1220a to 1220d... Pin, 123... -USB port, 161... AC/DC converter, 162... DC/DC converter, 163... Dimming control circuit, 1210a, 1210b... End cap, 1231... Power supply terminal (GND), 1232... Power supply terminal (+5v), 1233... Data terminal (D+), 1234... Data terminal (D-)

Claims (4)

An LED lamp having an LED light source and a control circuit for controlling the LED light source;
A pair of end caps attached to both ends of the LED lamp,
The control circuit is
An AC/DC converter for converting AC voltage to DC voltage,
A DC/DC converter for converting the DC voltage from the AC/DC converter into a predetermined DC voltage;
A dimming control circuit for supplying the DC voltage from the AC/DC converter to the LED light source and dimming the LED light source based on a dimming control signal;
The first or second end cap of the pair of end caps is connected to the DC/DC converter and the dimming control circuit , and supplies the predetermined DC voltage from the DC/DC converter to the outside, and has a USB port which Ru receiving the dimming control signal,
The said 1st or 2nd end cap is an LED lighting fixture which has a pin connected to the said AC/DC converter and which functions as an electrode which receives the said alternating voltage . The LED lighting apparatus according to claim 1, wherein the USB port is provided on the first end cap, and the pin functioning as the electrode is provided on the second end cap . The LED lighting device according to claim 2, wherein the first end cap further has a pin that functions as a support member. The LED lighting device according to claim 1, wherein the USB port is provided so as to open on a light emitting surface side of the LED light source.

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