JP2017069052A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of emitting light on both surfaces in the whole area in the longer direction of a pipe, in a structure for accommodating a power supply part in the pipe.SOLUTION: An LED lighting lamp 1 has: a plurality of LED elements 21; an LED circuit board 20 which has a first surface and a second surface on the opposite side from the first surface, in which a plurality of LED elements 21 are mounted on the first surface and the second surface, and in which a wiring pattern for lighting the plurality of LED elements 21 is formed; a power supply circuit board 30 which mounts components for constituting the power supply part for supplying power to the LED circuit board 20, and in which a wiring pattern for constituting the power supply part is formed; and a pipe member 10 for accommodating the LED circuit board 20 and the power supply circuit board 30. The LED circuit board 20 and the power supply circuit board 30 are arranged so that normal lines of each other cross in one cross section orthogonal to the longer direction of the pipe member 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting device.

  As a conventional technique, there has been proposed an illumination device that houses an illumination unit using a light emitting diode (LED) in a pipe and a power supply unit that supplies power to the illumination unit (for example, see Patent Document 1).

  The illumination device disclosed in Patent Literature 1 includes a pipe including a diffusing agent that diffuses light, socket portions attached to both ends of the pipe member, an illumination unit and a power supply unit accommodated in the pipe, and illumination. Both the power supply unit and the power supply unit are provided on the same substrate, and the substrate is supported by the concave portion of the inner wall of the pipe. The power supply unit includes electronic components such as a capacitor, a coil, and an IC, and these electronic components are arranged near the socket on the substrate. In addition, a plurality of LEDs are used for the illumination unit, and the illumination unit is arranged at a predetermined interval other than the region on both surfaces of the substrate where the electronic components of the power supply unit are arranged.

JP 2012-226664 A

  Since the illumination device of Patent Document 1 described above has the illumination unit and the power supply unit provided on the substrate, the power supply unit can be accommodated in the pipe, and a wide irradiation angle can be obtained by arranging the LEDs on both sides of the substrate. Since the LED cannot be provided in the region where the electronic components of the power supply unit are arranged, there is a problem that light is not irradiated to a part of the pipe and light cannot be emitted in the entire lengthwise direction of the pipe. Further, when the electronic component of the power supply unit is arranged on one side of the substrate, the LED can be arranged only on one side, and light can be emitted on the entire pipe longitudinal direction, but light cannot be emitted on both sides of the pipe.

  Accordingly, an object of the present invention is to provide an illumination device capable of emitting light on both sides in the entire longitudinal direction of a pipe in a configuration in which a power supply unit is accommodated in the pipe.

  One embodiment of the present invention provides the following lighting device to achieve the above object.

[1] a plurality of light emitting elements;
A first surface and a second surface opposite to the first surface; the plurality of light emitting elements are mounted on the first surface and the second surface; A first circuit board on which a wiring pattern for lighting is formed;
Mounting a component constituting a power supply unit for supplying power to the first circuit board, and a second circuit board on which a wiring pattern for constituting the power supply unit is formed;
A light transmissive tubular member that houses the first circuit board and the second circuit board;
The lighting device in which the first circuit board and the second circuit board are arranged so that their normal lines intersect in one cross section orthogonal to the longitudinal direction of the light transmissive tubular member.
[2] The lighting device according to [1], wherein the light-transmissive tubular member has a support portion that supports the first circuit board on an inner peripheral surface.
[3] The lighting device according to [1] or [2], wherein the second circuit board is supported from the first circuit board side.
[4] The lighting device according to any one of [1] to [3], wherein the second circuit board is supported by a support portion provided in a socket that closes the light transmissive tubular member.

According to the invention which concerns on Claim 1, in the structure which accommodated the power supply part in the pipe, it can enable double-sided light emission in the whole longitudinal direction of a pipe.
According to the invention which concerns on Claim 2, a 1st circuit board can be supported by the support part provided in the internal peripheral surface of the light transmissive tubular member.
According to the invention which concerns on Claim 3, a 2nd circuit board can be supported by the lead wire for electrically connecting with a 1st circuit board.
According to the invention which concerns on Claim 4, a 2nd circuit board can be supported by the support part provided in the socket which closes a light transmissive tubular member.

FIG. 1 is a perspective view showing a configuration of an LED illumination lamp. FIG. 2 is a perspective view showing the configuration of the LED circuit board and the power circuit board disposed in the pipe member by partially cutting the pipe member. FIG. 3 is a side view when the inside of the pipe member is viewed in the longitudinal direction of the pipe member from the end side of the pipe member except for the socket of the LED illuminating lamp. FIGS. 4A and 4B are a plan view and a front view showing the configurations of the LED circuit board and the power supply circuit board, respectively. FIG. 5 is a circuit diagram showing the configuration of the power supply unit. FIG. 6 is a view showing a modified example of the power supply unit, and is a side view when the inside of the pipe member is viewed in the longitudinal direction of the pipe member from the end side of the pipe member except for the socket of the LED illuminating lamp. 7A and 7B are diagrams showing modifications of the illumination unit and the power supply unit, and are plan views showing the configuration of the LED illumination lamp.

[Embodiment]
FIG. 1 is a perspective view showing a configuration of an LED illumination lamp. FIG. 2 is a perspective view showing the configuration of the LED circuit board and the power circuit board disposed in the pipe member by partially cutting the pipe member. FIG. 3 is a side view when the inside of the pipe member is viewed in the longitudinal direction of the pipe member from the end side of the pipe member except for the socket of the LED illuminating lamp. 4A and 4B are a plan view and a front view showing the configurations of the LED circuit board 20 and the power supply circuit board 30, respectively.

(Whole structure of lighting device)
In FIG. 1, the code | symbol 1 has shown typically the example of 1 structure of a fluorescent lamp type LED lamp (henceforth LED lighting lamp). The basic configuration of the LED lamp 1 includes a pipe member 10 as a light transmissive tubular member made of a cylindrical pipe, cap-shaped first and second sockets 11 that close both ends of the pipe member 10, and a pipe member. The illumination part 2 accommodated in the inside of the light source 10 emits light, and the power supply part 3 accommodated in the pipe member 10 and supplies power to the illumination part 2.

  The illumination unit 2 is an LED circuit board as a first circuit board on which a plurality of LED elements (hereinafter also referred to as LEDs) 21 that are light emitting elements and a wiring pattern (not shown) for mounting the LED elements 21 are formed. 20. Note that the LED elements 21 are provided on both surfaces (first surface and second surface) of the LED circuit board 20. Further, the LED circuit board 20 is supported by a recess 100 provided on the inner wall of the pipe member 10.

  The power supply unit 3 includes a power supply circuit board 30 as a second circuit board on which a wiring pattern (not shown) for mounting a plurality of electronic parts constituting the power supply circuit is formed, and a fuse that is an electronic part constituting the power supply circuit 31, common coil 32, film capacitor 33, common coil 34, ceramic capacitor 35, coil 36, electrolytic capacitor 37, rectifier diode 38, FET 39, and IC 40. The electronic components constituting the above-described power supply circuit are merely examples, and further include components not shown, or may be configured using other components.

(Configuration of pipe member)
The pipe member 10 of the LED illuminating lamp 1 is made of a light transmissive tubular member such as an acrylic resin or a polycarbonate resin. The pipe member 10 has substantially the same size, dimension, and outer shape as an existing straight fluorescent lamp. The pipe member 10 is formed with a recess 100 that is a pair of engagement receiving portions that protrude in the radial direction from the inner peripheral surface and extend in parallel along the longitudinal direction of the inner peripheral surface.

  As shown in FIG. 3, the LED circuit board 20 is engaged and supported in the recess 100. According to the illustrated example, the recess 100 of the pipe member 10 is a rail-like uneven portion extending along the longitudinal direction of the inner peripheral surface, but is not limited to this. It may be recessed in the shape of a groove that is recessed in the radial direction from the peripheral surface and extends along the longitudinal direction of the inner peripheral surface.

  Further, the power circuit board 30 is disposed perpendicular to the LED circuit board 20. The power circuit board 30 may be supported by being connected to the LED circuit board 20 by a lead wire or the like, or engaged with a recess (not shown) provided on the inner peripheral surface of the socket 11. It may be supported. In addition, a concave portion may be provided on the inner peripheral surface of the pipe member 10 to be instructed, but it is preferable that the concave portion is not provided in the light irradiation direction as much as possible so that luminance unevenness does not occur.

(Socket configuration)
The first and second sockets 11 of the LED lighting 1 have the same structure. As a material of the end of the socket 11, for example, a material such as aluminum or an aluminum alloy is suitable. Each of the sockets 11 supports two pairs of first to fourth socket terminals 110 to be connected to terminals of a fluorescent lamp socket section (not shown) insulatively by bakelite. The protruding ends of these socket terminals 110 are electrically connected to the terminals of the fluorescent lamp socket portion. The other end of the socket terminal 110 opposite to the protruding end is connected to the power supply unit 3 via the lead wire 300. The socket 11 is formed with a pair of locking projections that protrude radially from the inner peripheral surface.

  The material of the connecting portion connected to the pipe member 10 of the socket 11 is made of, for example, polybutylene terephthalate resin or polycarbonate. The inner peripheral surface of the connection part of the socket 11 covers the outer periphery of the one end side of the pipe member 10, and is attached by engaging a locking convex part and a locking concave part provided on the inner peripheral side.

(Configuration of lighting unit 2)
LED elements 21 arranged at an arbitrary pitch are mounted on both surfaces of the LED circuit board 20. The pitch (arrangement number) of the LED elements 21 is set in consideration of necessary brightness, lighting effect, and the like. The pitch (arrangement number) of the LED elements 21 is not limited to the illustrated example, and it is a matter of course that the arrangement number of the LED elements 21 can be arbitrarily set.

  The LED circuit board 20 may be made of, for example, a glass base material (for example, FR-4) or an epoxy / polyester composite base material (for example, CEM-3).

  The LED illumination lamp 1 uses a chip-type LED element 21 having a wide viewing angle, but is not limited to this. As another example of the LED element 21, for example, a blue LED may be configured to be capable of emitting white light by performing wavelength conversion with a phosphor, and each of the three types of red LED elements, green LED elements, and You may consist of the LED element which has a blue LED element. Still another example of the LED element 21 is, for example, color light obtained by mixing and combining two types of monochromatic light among red light, green light, or blue light, or three types of monochromatic light. It is possible to use LED elements configured to be able to emit white light that is mixed and combined.

  In the illustrated example, the configuration in which the plurality of LED elements 21 are connected in parallel to the LED circuit board 20 including one circuit board is illustrated, but the present invention is not limited to this. For example, the LED circuit board 20 may have a configuration in which two or more circuit boards are connected in parallel, or may have a configuration in which a plurality of LED elements 21 are connected in series.

  In the illustrated example, the configuration in which the socket terminal 110 is protruded from the socket 11 is illustrated. However, the present invention is not limited to this. For example, the socket terminal 110 may be configured to protrude from the side surface of the socket 11. Good. For example, the socket terminal 110 may be protruded by insert molding, press fitting into a pin insertion hole, or screwing.

(Configuration of power supply unit 3)
The power circuit board 30 can be made of, for example, a glass base material (for example, FR-4) or an epoxy / polyester composite base material (for example, CEM-3) on both sides of the substrate. A circuit unit having electronic components such as a fuse 31, a common coil 32, a film capacitor 33, a common coil 34, a ceramic capacitor 35, a coil 36, an electrolytic capacitor 37, a rectifier diode 38, an FET 39, and an IC 40 is provided. The illumination unit 2 is electrically connected through these mounted components. The power supply circuit is configured as shown below as an example.

  FIG. 5 is a circuit diagram showing a configuration of the power supply unit 3.

  The power source unit 3 is a switching power source that supplies electric power to the lighting unit 2 and is driven at a constant current, and protects the circuit from a high voltage generated by the influence of lightning and a fuse 31 that protects the circuit from a current exceeding the rating. A lightning surge protection unit 30a, a noise filter unit 30b that removes noise from the input power supply, a rectifier diode 38 that converts alternating current into direct current, IC supply power supply units 30c and 30d that supply power to the IC 40, and a switching element 39 A switching control circuit unit 30e that controls the operation, a temperature protection circuit unit 30f that detects the temperature of the power supply unit 3 to protect the circuit from heat generation exceeding the rating, and a duty ratio of the output based on the control of the switching control circuit 30e Switching element 39 that performs output, current detection unit 30g that detects a current value of the output, and output capacitor unit 30 that smoothes the output With the door.

  The power supply unit 3 uses an AC commercial power supply of 100 V / 200 V 50 Hz / 60 Hz as an input power supply in the above configuration, and supplies power to the illumination unit 2 with a direct current of 200-300 mV 30-45 V.

(Effect of embodiment)
According to the LED illumination lamp 1 according to this embodiment, the following effects can be obtained. Conventionally, the illumination unit 2 and the power supply unit 3 provided on the same substrate are provided on different substrates, and the power supply circuit board 30 of the power supply unit 3 is arranged perpendicular to the LED circuit board 20 of the illumination unit 2, The LED circuit board 20 and the LED element 21 can be provided up to the end in the longitudinal direction of the pipe member 10 and on both sides of the LED circuit board 20, and the pipe member 10 can emit light on both sides in the entire longitudinal direction. become able to.

  The LED circuit board 20 and the LED element 21 can be provided up to the end of the pipe member 10 in the longitudinal direction. However, the LED circuit board 20 and the LED element 21 are not necessarily provided up to the end for reasons such as limiting the irradiation range. Of course, you may.

[Modification 1]
In the above-described embodiment, the case where the power supply circuit board 30 is arranged perpendicular to the LED circuit board 20 is shown, but even if the power circuit board 30 is arranged at an angle other than perpendicular to the LED circuit board 20. Good. Furthermore, you may comprise a LED circuit board so that it may demonstrate below.

  FIG. 6 is a view showing a modified example of the power supply unit, and is a side view when the inside of the pipe member is viewed in the longitudinal direction of the pipe member from the end side of the pipe member except for the socket of the LED illuminating lamp.

As shown in FIG. 6, by dividing the substrate as in the power supply circuit board 30A ₁ and 30A ₂ in two, in the embodiment implemented divided parts are mounted on a single substrate, each of the substrate and, a power supply circuit board 30A ₁ and 30A ₂ is an angle between the LEED circuit board 20, respectively may be arranged to be greater than 90 °.

Thereby, the LED element 21 having a wider irradiation angle can be used.
[Modifications 2 and 3]
In the above-described embodiment, the power supply circuit board 30 is arranged at one end in the longitudinal direction of the pipe member 10, but the board may be divided into two parts and arranged at both ends, or may be arranged at the center. It may be arranged between the end and the center, or a combination of these.

  7A and 7B are diagrams showing modifications of the illumination unit and the power supply unit, and are plan views showing the configuration of the LED illumination lamp.

FIG. 7A shows an example in which the board is divided into two parts and arranged at both ends in the longitudinal direction of the pipe member 10, and the power supply circuit boards 30 </ _b > B ₁ and 30 </ _b > B ₂ are arranged at both ends in the longitudinal direction of the pipe member 10. Is arranged. It is assumed that the LED elements 21 are mounted on both surfaces of the LED circuit board 20 and are arranged at predetermined intervals over the entire longitudinal direction of the pipe member 10.

FIG. 7B shows an example in which the pipe member 10 is arranged at the center in the longitudinal direction, and the power circuit board 30 </ b> C is arranged at the center in the longitudinal direction of the pipe member 10. Incidentally, LED circuit board 20C ₁ and C ₂ is divided into two, are connected by a lead wire in the vicinity longitudinal center of the pipe member 10. Further, it is assumed that the LED elements 21 are mounted on both surfaces of the LED circuit boards 20 </ _b > C ₁ and C < _b > ₂ and are arranged at predetermined intervals over the entire length of the pipe member 10.

  As is clear from the above description, the present invention is not limited to the above embodiments and illustrated examples, and various design changes can be made within the scope described in each claim. For example, the power supply unit 3 converts the voltage or current of power supplied from the outside via the socket terminal 110 and supplies it to the illumination unit 2, but the power supply unit 3 includes a secondary battery. Alternatively, the secondary battery may be charged using a power source supplied from the outside via the socket terminal 110, and power may be supplied from the charged secondary battery to the illumination unit 2. In addition, the present invention can be used for, for example, an illumination lamp for an interior lighting signboard, an illumination lamp for an external illumination signboard, and a display illumination of a product.

DESCRIPTION OF SYMBOLS 1 LED illumination light 2 Illumination part 3 Power supply part 10 Pipe member 11 Socket 20 LED circuit board 21 LED element 30 Power supply circuit board 30a Lightning surge protection part 30b Noise filter part 30c, 30d IC power supply part 30e Switching control circuit part 30f Temperature protection Circuit unit 30g Current detection unit 30h Output capacitor unit 31 Fuse 32 Common coil 33 Film capacitor 34 Common coil 35 Ceramic capacitor 36 Coil 37 Electrolytic capacitor 38 Rectifier diode 100 Recess 110 Socket terminal 300 Lead wire

Claims (4)

A plurality of light emitting elements;
A first surface and a second surface opposite to the first surface; the plurality of light emitting elements are mounted on the first surface and the second surface; A first circuit board on which a wiring pattern for lighting is formed;
Mounting a component constituting a power supply unit for supplying power to the first circuit board, and a second circuit board on which a wiring pattern for constituting the power supply unit is formed;
A light transmissive tubular member that houses the first circuit board and the second circuit board;
The lighting device in which the first circuit board and the second circuit board are arranged so that their normal lines intersect in one cross section orthogonal to the longitudinal direction of the light transmissive tubular member.   The lighting device according to claim 1, wherein the light-transmissive tubular member has a support portion that supports the first circuit board on an inner peripheral surface.   The lighting device according to claim 1, wherein the second circuit board is supported from the first circuit board side. The lighting device according to any one of claims 1 to 3, wherein the second circuit board is supported by a support portion provided in a socket that closes the light-transmissive tubular member.

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