WO2013128896A1

WO2013128896A1 - Led lighting fixture

Info

Publication number: WO2013128896A1
Application number: PCT/JP2013/001122
Authority: WO
Inventors: 有士中川
Original assignee: パナソニック株式会社
Priority date: 2012-02-29
Filing date: 2013-02-26
Publication date: 2013-09-06
Also published as: JP2013182698A; CN204042628U; JP5895192B2

Abstract

A mounting substrate (212) on which is mounted an LED (211) mates with a mating recess (31) furnished on an attachment surface (221) of a lamp fitting (20). A location at which the inside peripheral wall (311) of the mating recess (31) abuts a side end surface (215) of the mounting substrate (212) is furnished with a depression (313) on the bottom surface (312) which continues from the inside peripheral wall (311) of the mating recess (31), whereby the rounded part created through abrasion by the die during molding of the mating recess (31) does not abut the mounting substrate (212). The mounting substrate (212) can thereby be easily positioned with respect to the lamp fitting (20) and in close contact therewith, improving the ease of the assembly procedure and the heat radiating effect.

Description

LED lighting fixtures

The present invention relates to an LED lighting apparatus in which a mounting board on which an LED is mounted is attached to the front surface of a lamp.

2. Description of the Related Art Conventionally, an LED lighting fixture in which a mounting substrate on which an LED is mounted is attached to the front surface of a lamp is known (see, for example, Patent Document 1).
As shown in FIG. 8, in the lighting fixture 100 described in Patent Document 1, a mounting substrate 105 in which LEDs 104 that are a plurality of light sources are mounted on a tip surface 103 of a lamp 102 having a large number of heat dissipating fins 101 on the outer peripheral surface, It is attached via an insulating sheet 106.
A reflector 108 having a light exit 107 at a position corresponding to the LED 104 is attached to the front side (the upper side in FIG. 8) of the mounting substrate 105 with screws 109. Positioning pins (not shown) that fit into positioning guides 110 provided on the outer periphery of the mounting substrate 105 are provided on the side surface of the LED 104 of the reflecting plate 108, and the positioning pins are positioned when the reflecting plate 108 is attached. The guide 110 is fitted and positioned.

Japanese Unexamined Patent Publication No. 2010-262846 (FIG. 1)

By the way, when mounting the mounting substrate on which the LED is mounted on the front surface of the lamp, there is a case where a recess into which the mounting substrate is fitted may be provided. In this case, considering that the R portion is generated at the bottom corner of the recess due to wear of the mold forming the recess, the recess is formed large so that the R portion does not hit the mounting substrate, and is It is common to fix.
However, since the recess is formed larger than the mounting substrate, the positioning accuracy is lowered. In addition, since the tightening torque management of the screw must be thoroughly performed to manage the stress applied to the mounting board and the closeness for obtaining the heat radiation effect to the lamp, there is a problem that the assembling workability is deteriorated.

The present invention has been made in order to solve the conventional problems, and the mounting substrate on which the LED is mounted can be easily positioned and brought into close contact with the lamp, thereby improving the assembly workability and the heat dissipation effect. An object is to provide an LED lighting apparatus.

The LED lighting apparatus of the present invention includes an LED light source in which an LED is mounted on a mounting board, and a lamp having a mounting surface to which the LED light source is mounted, and a fitting recess for fitting the mounting board is provided on the mounting surface. In addition, a recess is provided on the bottom surface of the fitting recess that is continuous with the inner peripheral wall at a position where the inner peripheral wall of the fitting recess contacts the side end surface of the mounting substrate.

In the LED lighting apparatus of the present invention, a plurality of convex portions that contact the side end surface of the mounting substrate fitted in the fitting concave portion are provided on the inner peripheral wall of the fitting concave portion.

Furthermore, in the LED lighting apparatus of the present invention, three or more of the convex portions are provided at positions surrounding the mounting substrate.

In the present invention, since the inner peripheral wall of the fitting recess for fitting the mounting substrate on which the LED is mounted is in contact with the side end surface of the mounting substrate, a recess is provided on the bottom surface of the fitting recess continuous with the inner peripheral wall. The R portion generated by the wear of the mold when forming the fitting recess does not contact the mounting substrate. Thereby, the mounting board can be easily positioned and brought into close contact with the lamp, and an LED lighting apparatus can be provided that has the effect of improving the assembly workability and the heat dissipation effect.

The perspective view which looked at the LED lighting fixture of embodiment which concerns on this invention from the downward direction The side view and sectional drawing of the LED lighting fixture of embodiment which concerns on this invention (A) is a plan view of the lower surface of the lamp body, and (B) is an enlarged plan view of the LED light source mounting portion. (A) is a plan view of the lower surface of the lamp body, and (B) is an enlarged perspective view of a concave portion provided on the lower surface of the lamp body in part B in (A). (A) is a perspective view showing a state in which the LED light source is fitted into the fitting recess on the lower surface of the lamp body, and (B) is a cross-sectional view at the position BB in (A) (A) is an exploded perspective view showing a state in which the LED light source fitted in the fitting recess on the lower surface of the lamp body is attached by a spring member, and (B) is a cross-sectional view at the position BB in (A) The perspective view which shows the modification of a fitting recessed part and a hollow Exploded perspective view of a conventional LED lighting fixture

Hereinafter, the LED lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1 and FIG. 2, the LED lighting apparatus 10 according to the embodiment of the present invention is attached to the embedded hole 12 provided in the ceiling surface 11 that is the attached portion, and illuminates the lower part. Can be used.
In the following description, the case where the lower side is illuminated from the ceiling surface 11 is targeted, the irradiation direction is displayed below or below, and the opposite side to the irradiation direction is displayed above or above.

As shown in FIG. 1, the LED lighting apparatus 10 includes a lamp 20 having an LED light source 21 on a lower surface (mounting surface (see FIG. 2)) 221 and a lamp mounting portion 40 for mounting the lamp 20 to the ceiling surface 11. Have.
The lamp 20 is connected to a power supply device 61 accommodated in a power supply case 60 by a power supply line 62.
As shown in FIG. 2, the lamp 20 has a lamp body 22 having an LED light source 21 attached to the lower surface 221. A reflecting plate 24 having a reflecting surface 241 corresponding to the LED light source 21 is attached to the lower surface 221 of the lamp 20. A translucent panel 26 is provided on the front side of the reflecting plate 24 via a packing 25, and the panel 26 is attached to the lamp body 22 by a pressing plate 27.
A plurality of heat radiation fins 23 are provided on the outer periphery of the lamp body 22.

The lamp mounting portion 40 includes a lamp body frame 41 that houses the lamp body 22 and a ring-shaped frame member 42 that comes into contact with the ceiling surface 11 from below when the LED lighting device 10 is mounted on the ceiling surface 11. Have.
The lamp body frame 41 and the frame member 42 are connected by a connecting frame 43. A plurality of connection frames 43 are provided at predetermined intervals along the circumferential direction.

Below the panel 26 of the lamp body 22, an auxiliary reflector 50 that reflects light emitted from the plurality of LED light sources 21 in a predetermined direction is attached. The auxiliary reflector 50 has a substantially truncated cone shape as a whole, and the plurality of LED light sources 21 are exposed downward from the upper opening (upper opening 51).
The lower opening (lower opening 52) is provided with a ring-shaped stop member 53. The stop member 53 comes into contact with the inner edge of the frame member 42 of the lamp mounting portion 40 from below, The auxiliary reflector 50 is supported and positioned.

An auxiliary reflector mounting spring 54 is attached to the upper outer side of the auxiliary reflector 50. The auxiliary reflector mounting spring 54 has a pair of

spring members

541 and 541, and the pair of

spring members

541 and 541 are urged in directions away from each other.
An attachment plate 44 for attaching the auxiliary reflector 50 is attached to the lamp body frame 41. The mounting plate 44 is provided with an oval cutout 441 along the circumferential direction. By passing the spring member 541 of the auxiliary reflection plate mounting spring 54 through the cutout 441, the auxiliary reflection plate 50 is connected to the lamp body 22. Attached to.

As shown in FIG. 3A, a plurality of LED light sources 21 are attached to the lower surface 221 of the lamp body 22.
As shown in FIG. 3B, the LED light source 21 includes an LED 211 and a mounting substrate 212 on which the LED 211 is mounted. A connector 213 is attached to the mounting board 212.

As shown in FIG. 4A, fitting recesses 31 for the LED light source 21 are provided radially on the lower surface 221 of the lamp body 22 from the center CP of the lower surface 221 at predetermined intervals in the circumferential direction. The mounting substrate 212 is attached in close contact with the bottom surface 312 of the fitting recess 31.
As shown in FIG. 4B, the fitting recess 31 is formed to be slightly larger than the size and shape of the mounting substrate 212 of the LED light source 21. On the inner peripheral wall 311 of the fitting concave portion 31, at least three (here, for example, five) convex portions 32 are provided so as to protrude inside the fitting concave portion 31.
Each bottom surface 312 corresponding to the position of the convex portion 32 is provided with a recess 313.

As shown in FIG. 5A, the front end surface of the convex portion 32 substantially corresponds to the size of the mounting substrate 212 of the LED light source 21 fitted in the fitting concave portion 31, and contacts the side end surface 215 of the mounting substrate 212. Touch.
As shown in FIG. 5B, since the recess 313 is provided at the position of the convex portion 32, the upper surface corner portion 214 of the mounting substrate 212 does not contact the bottom surface 312 of the fitting concave portion 31. Further, since the fitting recess 31 is formed larger than the mounting substrate 212 at a position other than the convex portion 32 position, the upper surface corner 214 of the mounting substrate 212 has the bottom surface 312 and the inner peripheral wall 311 of the fitting recess 31. The bottom surface 312 is contacted without contacting the bottom surface corner 314 that is the intersection with the bottom surface 312.
Therefore, the upper surface corner portion 214 of the mounting substrate 212 does not contact the bottom surface corner portion 314 of the fitting concave portion 31 that may be rounded when formed due to wear of the mold.

As shown in FIGS. 6A and 6B, the LED light source 21 fitted in the fitting recess 31 fixes the mounting substrate 212 by pressing it with a spring member 33.
The spring member 33 has a support portion 331 for fixing to a portion where the fitting recess 31 is not provided on the lower surface 221 of the lamp body 22 and a connecting portion 332 for connecting the support portion 331. The support portion 331 includes a pressing spring portion 333 that presses the mounting substrate 212 against the lower surface 221 of the lamp body 22.

Therefore, the LED light source 21 is attached by first fitting the mounting substrate 212 of the LED light source 21 into the fitting recess 31 provided on the lower surface 221 of the lamp body 22. At this time, the mounting substrate 212 is positioned by the convex portion 32 of the fitting concave portion 31.
Next, the mounting screw 34 is passed through the through hole 334 provided in the support portion 331 of the spring member 33 and further fastened to the screw hole 222 on the lower surface 221 of the lamp body 22.
As a result, the pressing spring portion 333 of the spring member 33 presses and fixes the mounting board 212 against the lower surface 221 of the lamp body 22.

As described above, according to the LED lighting apparatus 10 of the embodiment according to the present invention described above, the mounting substrate 212 on which the LEDs 211 are mounted is fitted into the fitting recess 31 provided on the lower surface 221 of the lamp 20 and attached.
At this time, since the recess 313 is provided in the bottom surface 312 continuous with the inner peripheral wall 311 of the fitting recess 31 at a position where the inner peripheral wall 311 of the fitting recess 31 contacts the side end surface 215 of the mounting substrate 212, the fitting recess The R portion generated by the wear of the mold when forming 31 does not contact the mounting substrate 212.
Thereby, the mounting substrate 212 can be easily positioned and brought into close contact with the lamp main body 22, and the assembling workability and the heat dissipation effect can be improved.

Further, since the plurality of convex portions 32 that contact the side end surface 215 of the mounting substrate 212 fitted in the fitting concave portion 31 are provided on the inner peripheral wall 311 of the fitting concave portion 31, the mounting substrate 212 can be easily positioned.

Furthermore, since three or more convex portions 32 are provided at a position surrounding the mounting substrate 212, the mounting substrate 212 can be reliably positioned in the fitting recess 31.

In addition, the LED lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the case where the plurality of convex portions 32 are provided as the inner peripheral wall 311 of the fitting concave portion 31 that contacts the side end surface 215 of the mounting substrate 212 has been illustrated.
In addition, as shown in FIG. 7, when the inner peripheral wall 311 of the fitting recess 31 </ b> B contacts the side end surface 215 of the mounting substrate 212 over the entire surface, a continuous groove-like shape is formed on the bottom surface 312 continuous with the inner peripheral wall 311. A recess 313B is provided.

This application is based on a Japanese patent application (Japanese Patent Application No. 2012-044026) filed on February 29, 2012, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 10 LED lighting fixture 20 Lamp 21 LED light source 211 LED
212 Mounting board 215 Side end surface 221 Lower surface (Mounting surface)
31 Fitting recess 311 Inner peripheral wall 312

Bottom surface

313, 313B Depression 32 Projection

Claims

An LED light source having LEDs mounted on a mounting substrate;
A lamp having a mounting surface for attaching the LED light source,
While providing a fitting recess for fitting the mounting board on the mounting surface,
The LED lighting apparatus which provided the hollow in the bottom face continuous to the said inner peripheral wall of the said fitting recessed part in the position where the inner peripheral wall of the said fitting recessed part contact | abuts the side end surface of the said mounting substrate.
In the LED lighting fixture of Claim 1,
The LED lighting fixture which provided the some convex part contact | abutted to the said side end surface of the said mounting board | substrate inserted by the said fitting recessed part in the said inner peripheral wall of the said fitting recessed part.
The LED lighting apparatus according to claim 2,
An LED lighting apparatus in which three or more convex portions are provided at positions surrounding the mounting substrate.