JP2018045809A - Led lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting fixture capable of supplying low voltage of power for small power equipment only by adding an inexpensive and simple structure.SOLUTION: An LED lighting fixture 1 includes: a plurality of LED chips 35; a power supply wire 32 connected to a constant current driving source 13 and connecting the plurality of LED chips 35 in series; an LED substrate 30 where the plurality of LED chips 35 is aligned and installed; and a small power extraction unit 50 having a small power extraction wire 51 connected to the power supply wire 32 so as to hold a predetermined number of LED chips 35 in a serial direction, and configured to extract low-voltage of small power from the power supply wire 32. Consequently, the LED lighting fixture can supply small power to small power equipment 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an LED lighting apparatus, and more particularly to an LED lighting apparatus having an additional function other than illumination.

  Conventionally, many products have been provided as lighting fixtures for illuminating a room or the like, and many LED lighting fixtures employing LED chips have been provided with the spread of LEDs. On the other hand, in lighting fixtures, lighting fixtures having not only a lighting function but also an additional function such as a function of communicating with the outside and a speaker function are also provided.

  For example, the following Patent Documents 1 and 2 disclose LED lighting fixtures having additional functions such as a communication function.

JP 2014-16338 A Japanese Patent Laid-Open No. 2006-76405

  By the way, in general, LED lighting fixtures are supplied with power by converting a commercial power source of 100V into a direct current by an AC / DC converter. LED lighting fixtures are normally driven at a constant current and are supplied with a large driving voltage (for example, 75V) as a whole, whereas devices for realizing additional functions are at a low voltage of about several volts. It is often a low-power device that is driven.

  Therefore, in a conventional LED lighting apparatus having an additional function, a small voltage for supplying low-voltage power in addition to a voltage conversion unit for lighting for supplying power to an LED lighting unit that requires a large voltage. It is necessary to separately install a voltage conversion unit for electric power equipment, and there is a problem that the configuration becomes complicated and it is difficult to reduce the size, and costs are increased.

  This invention is made | formed in view of such a subject, In the LED lighting fixture provided with an additional function, the low voltage electric power for low-power apparatuses is supplied only by adding a low-cost simple structure. An object of the present invention is to provide an LED lighting apparatus that can be used.

  An LED lighting apparatus according to the present invention for solving the above-described problems includes a plurality of LED chips, a power supply line connected to the constant current drive source, and the plurality of LED chips connected in series, and the series direction. A small power extraction line connected to the power supply line so as to sandwich a predetermined number of the LED chips, and a low power extraction unit that extracts low-voltage low power from the power supply line. The device can supply the small power to the device.

  According to the LED lighting apparatus according to the present invention, it is possible to extract and supply small electric power for a low-power device only by adding a low-cost simple configuration to the conventional LED lighting apparatus.

FIG. 1 is a perspective view of an LED lighting apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a circuit configuration of the LED lighting apparatus according to the embodiment of the present invention. FIG. 3 is a diagram showing the configuration of the LED substrate according to the embodiment of the present invention. FIG. 4 is a diagram illustrating the configuration of the communication unit and the low power extraction unit according to the embodiment of the present invention. FIG. 5 is a schematic diagram of a circuit configuration of an LED lighting apparatus according to a modification of the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a Bluetooth (registered trademark) communication chip will be described as an example of a low-power device to which low-power is supplied. However, the low-power device is a low-power device driven by low-voltage power. Various devices can be employed as long as they are present.

  FIG. 1 is a perspective view of an LED lighting apparatus according to the present embodiment. FIG. 2 is a schematic diagram of a circuit configuration of the LED lighting apparatus according to the present embodiment. FIG. 3 is a diagram showing a configuration of the LED substrate according to the present embodiment. FIG. 4 is a diagram illustrating the configuration of the communication unit and the small power extraction unit according to the present embodiment.

  The LED lighting fixture 1 includes a fixture main body 10 fixed to the ceiling and an LED lighting tube 20 attached and fixed to the fixture main body 10. The appliance main body 10 is connected to a casing 11 and a 100 V AC power source, which is a general commercial power source, and functions as a constant current drive source that converts an alternating current into a constant direct current for LED driving. Converter 13.

  The LED illumination tube 20 has a straight tube shape, an elongated cylindrical tube body 21, an LED substrate 30 installed in the tube body 21, a communication unit 40 for performing wireless communication with the outside, and a communication unit 40. The small electric power extraction part 50 which extracts the small electric power supplied to LED board 30 from the LED board 30 is provided.

  The tube body 21 includes bases 22 and 23 installed to close the openings at both ends, and the power supply base 22 installed at one end (left end in FIG. 1) is connected to the AC / DC converter 13. This is a power supply base 22 provided with a terminal to be operated.

  The LED board 30 includes a wiring board 31 on which wiring is printed, and a large number of LED chips 35 arranged on one side of the wiring board 31 from one end to the other end. The wiring board 31 is a printed wiring board and includes a power supply line 32 that electrically connects a number of LED chips 35 in series in order to supply power.

  As shown in FIG. 3, the power supply line 32 is connected from one end of the wiring board 31 so that two LED chips 35 are connected in parallel as one set, and 54 sets of LED chips 35 are connected in series. It extends to the end. In FIG. 3, in the parts other than the LED chip 35, the black line (region) part is an insulating part, and the white part is a conductive part. Thus, two LED chips 35 are arranged as a set from one end of the wiring board 31 to the other end, and a total of 108 LED chips 35 are installed.

  Here, in the present embodiment, among the plurality of LED chips 35, the LED chip 35 located in a portion where the small power extraction unit 50 extracts the small power, that is, a small power extraction line 51 and a power supply line described later. The LED chip 35 sandwiched between the connection parts with the LED 32 is referred to as an extraction LED chip 35a. The take-out LED chip 35a is connected in parallel with the communication unit 40 to which small power is supplied.

  The communication unit 40 is a part that communicates with the outside based on the Bluetooth (registered trademark) standard, and includes a communication chip 41 and an antenna 42. The communication unit 40 is installed inside one end (right side in FIG. 1) of the tube body 21. In the present embodiment, the communication unit 40 performs only one-way transmission of an identifier (ID) unique to each LED lighting device 1 mounted.

  For example, the LED lighting device 1 is installed at or near the advertising signboard, and an ID is transmitted from the advertising signboard, and the detailed content related to the advertisement is stored on the net in association with the ID, thereby being interested in the advertisement. The user can acquire the detailed information of the advertisement by accessing the detailed content from the smartphone or the like that has received the ID.

  The communication unit 40 is a low-power device that is a supply destination of the low-power extracted in the present embodiment. Of course, the low-power device is not limited to the communication unit 40. For example, any low-voltage electric device driven by a low voltage such as an ion generator or a speaker can be used as the low-power device. .

  The small power extraction unit 50 includes a small power extraction line 51 connected to the power supply line 32, a smoothing capacitor 52, and a DC / DC converter 53. The low power lead-out line 51 is installed so as to take out a small amount of low power by sandwiching one set of LED chips 35 in the series direction of the LED substrates 30.

  That is, one end of the small power extraction line 51 is connected to the power supply line 32 upstream of the extraction LED chip 35a, and the other end is connected to the power supply line 32 downstream of the extraction LED chip 35a. Thus, only one set of the extracted LED chips 35a, that is, one LED chip 35 is sandwiched in the series direction of the LED substrate 30.

  Of course, the number of extraction LED chips 35a in the series direction sandwiched between the low-power extraction lines 51 can be changed as appropriate, and the number can be changed as appropriate according to the voltage required for the low-power device to be supplied.

  In this embodiment, the communication unit 40, which is a low-power device, only needs to be able to supply a low voltage of 3V, and the voltage (VF value) for one LED chip 35 in the series direction is about 3.0V. Reference numeral 35 a denotes one LED chip 35 in the series direction of the LED substrate 30.

  Further, when the driving voltage of the low-power device is larger than 3V, the number of extraction LED chips 35a sandwiched between the small-power extraction lines 51 may be changed correspondingly. For example, when the driving voltage of the low-power device is 9 V, a small power is taken out from the three LED chips 35 in the series direction, that is, the small power extraction line 51 is connected to the three LEDs in the series direction. If it is installed so as to sandwich the chip 35, a low power of about 9V can be taken out.

  Since the small power lead-out line 51 only needs to be electrically connected to the power supply line 32 exposed on the wiring board 31 (the part indicated by 51 in FIG. 3), It costs little.

  The smoothing capacitor 52 is installed to stabilize the current corresponding to the ripple current. In the LED lighting apparatus 1 in which the current is relatively stable, the smoothing capacitor 52 can be omitted.

  The DC / DC converter 53 is a voltage stabilizer that adjusts the supply voltage to the low-power device (communication unit 40) to be constant, 3V in the present embodiment. Since the LED chip 35 has a performance error, the VF values of all the LED chips 35 are not exactly the same. That is, depending on the LED chip 35, the VF value becomes 2.7V, 3.0V, or 3.4V, resulting in variations.

  If the DC / DC converter 53 is installed, even when the error of the VF value is large as described above, it is possible to stably supply power with a constant voltage to the low-power device (communication unit 40). In addition, when the driving voltage of the low-power device (communication unit 40) is relatively large, the influence of the variation in the VF value becomes large, so it is desirable to stabilize the supply voltage by the DC / DC converter 53.

  In addition, when the variation in the VF value of the LED chip 35 is small, the small power voltage taken out from the power supply line 32 is also stabilized to some extent, and thus the DC / DC converter 53 can be omitted.

  As shown in FIG. 4, the communication unit 40 and the small power extraction unit 50 are installed so as to be located inside the base 23 installed on the opposite side of the power supply base 22 except for the small power extraction line 51. It is installed on the substrate 60 and the antenna substrate 61. A smoothing capacitor 52 and a DC / DC converter 53 are installed on the base substrate 60, and a communication chip 41 and an antenna 42 are installed on the antenna substrate 61.

  Although the configuration of the LED lighting apparatus 1 has been described above, the operation of the LED lighting apparatus 1 will be described next. The power supply of the LED lighting apparatus 1 is turned on, and the power converted into the direct current by the AC / DC converter 13 is supplied from the power supply base 22 to the LED substrate 30.

  Thereby, a constant current flows through the LED chips 35 sequentially via the power supply line 32. If it does so, electric power will be branched from extraction LED chip 35a pinched | interposed by the both ends of the small electric power extraction line 51 of the small electric power extraction part 50, and electric power will be supplied also to the small electric power extraction part 50.

  At this time, the voltage of the power extracted by the small power extraction unit 50 is the same as the voltage supplied to the extraction LED chip 35a, and the current flowing through the extraction LED chip 35a and the current flowing through the small power extraction unit 50 are: It is determined by the load resistance of the take-out LED chip 35a and the load resistance of the communication unit 40, which is a low power device.

  As a result, the low-power extraction unit 50 can extract low-voltage power, and the communication unit 40, which is a low-power device, has low power without installing a separate voltage conversion device for converting a large voltage into a low voltage. Voltage power can be supplied.

  In addition, the electric power supplied to the extraction LED chip 35 a is smaller than the current supplied to the other LED chips 35 by supplying the electric power to the small power extraction unit 50 in a branched manner. As a result, an illumination failure such as flickering in the extraction LED chip 35a may occur.

  In the present embodiment, the LED chip 35 installed at the end (right end in FIG. 1) of the plurality of LED chips 35 is taken out so as not to stand out even if such illumination failure occurs. LED chip 35a It is said.

  If it is desired to make the defective illumination of the extraction LED chip 35a less noticeable, the extraction LED chip 35a is installed at a position where the illumination light does not reach the room and is installed as a dummy LED chip that does not function as illumination. You may make it do.

  Specifically, for example, by installing the extraction LED chip 35a inside the base 23 or by installing a light shielding member covering the periphery of the extraction LED chip 35a, the illumination light of the extraction LED chip 35a is LED illuminated. It can function as a dummy LED chip that does not go out of the instrument 1.

  As described above, according to the LED lighting apparatus 1 according to the present embodiment, the low-power extraction unit 50 having a simple configuration in which the LED chip 35 is sandwiched in the series direction by the low-power extraction line 51 can easily take out low-voltage small power. be able to.

  In addition, according to the present embodiment, an LED lighting apparatus 1 that can supply low power to a low power device can be provided simply by installing an inexpensive and small small power extraction unit 50 at the end of the LED substrate 30. It can be manufactured at a low cost that is almost the same as that of LED lighting fixtures.

  In addition, for example, by installing the low power extraction unit 50 in the LED lighting device 1 in advance, the user can arbitrarily select the installation of the low power device as an option, or add the low power device later. It can be made possible.

  Then, the modification of embodiment of this invention is demonstrated. FIG. 5 is a schematic diagram of a circuit configuration of an LED lighting apparatus according to a modification of the present embodiment. The LED lighting apparatus 1 ′ according to this modification is characterized in that a battery (storage battery) 55 is installed in the LED lighting apparatus 1 according to the above embodiment, and other configurations are the same as in the above embodiment. The same numbers are assigned and the description is omitted.

  In the said embodiment, since the small electric power extraction part 50 is taking out small electric power from the electric power supply line 32 which supplies electric power to the LED chip 35, only when the power supply of the LED lighting fixture 1 is set to ON, it is small electric power. When it can be taken out and the power source of the LED lighting apparatus 1 is OFF, it is not possible to take out a small electric power.

  On the other hand, even when the power supply of the LED lighting apparatus 1 is OFF by installing a battery 55 in the small power extraction unit 50 ′ and having a function of storing electricity supplied to the small power device (communication unit 40). By using the electricity stored in the battery 55, it is possible to supply small power to the small power device.

  Further, in this modification, a changeover switch 56 is provided for switching whether or not the electricity stored in the battery 55 is supplied to the low-power device (communication unit 40), and the changeover switch 56 is turned on / off. Thus, whether or not to use electricity of the battery 55 can be switched as appropriate.

  According to this modification, while having the same effect as the above-mentioned embodiment, the low-power device (communication unit 40) is provided for a predetermined time even when the power of the LED lighting apparatus 1 is OFF by providing the battery 55. Can be supplied with small power.

  The embodiment of the present invention has been described above, but the embodiment of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the shape and size of each member constituting the LED lighting apparatus can be changed as appropriate.

  Moreover, in the said embodiment, although demonstrated taking the case of the LED lighting fixture installed in a ceiling, of course, the LED lighting fixture to which this invention is applied is not limited in the installation place, indoors, It can be installed in any desired place including outdoors.

  Moreover, in the said embodiment, although the AC / DC converter for supplying electric power to LED board is installed in the fixture main body side fixed to a ceiling, an AC / DC converter is reduced in size and installed in an LED lighting tube. You may make it do.

DESCRIPTION OF SYMBOLS 1,1 'LED lighting fixture 10 Appliance main body 11 Housing | casing 13 AC / DC converter 20 LED lighting tube 21 Tube 22 Feed base 23 Base 30 LED board 31 Wiring board 32 Power supply line 35 LED chip 35a Take out LED chip 40 Communication part 41 Communication Chip 42 Antenna 50, 50 'Small Power Extraction Unit 51 Small Power Extraction Line 52 Smoothing Capacitor 53 DC / DC Converter 55 Battery 56 Changeover Switch 60 Base Board 61 Antenna Board 65 Battery Board

Claims (5)

A plurality of LED chips;
A power supply line connected to a constant current drive source and connecting the plurality of LED chips in series;
A small power extraction portion connected to the power supply line so as to sandwich a predetermined number of the LED chips in the series direction, and a small power extraction portion for extracting low-voltage small power from the power supply line;
The LED lighting apparatus is characterized in that the low power can be supplied to a low power device.   The LED lighting apparatus according to claim 1, wherein the low-power extraction unit further includes a storage battery for storing electricity supplied to the low-power device.   3. The LED lighting apparatus according to claim 1, wherein the small power extraction unit further includes a voltage stabilizer for stabilizing the voltage of the extracted small power.   The said LED chip pinched | interposed by the said small electric power extraction line is installed as a dummy LED chip from which the illumination light does not come out of the said LED lighting fixture, The one of the Claims 1 thru | or 3 characterized by the above-mentioned. LED lighting fixtures.   5. The LED lighting apparatus according to claim 1, wherein the LED chips are arranged and arranged on an LED substrate, and the power supply line is a printed wiring on the LED substrate.

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