CN109611701B

CN109611701B - Light source device and lighting fixture

Info

Publication number: CN109611701B
Application number: CN201910013680.3A
Authority: CN
Inventors: 斋藤公史; 角野太一; 坂本哲也
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Priority date: 2014-02-25
Filing date: 2015-02-23
Publication date: 2021-06-18
Anticipated expiration: 2035-02-23
Also published as: JP2015159062A; CN106030190B; CN106030190A; JP6437724B2; CN109611701A; WO2015129635A1

Abstract

The invention relates to fixing of an LED substrate in a lighting apparatus with the LED substrate, and aims to provide a lighting apparatus capable of inhibiting the increase of the number of parts and the reduction of the operation efficiency. A cover (230) of the present invention has a claw section (234) that engages with a side surface plate (222) of a frame (220) in a state where a cover-side substrate fixing section (232-1) is in contact with a mounting surface (211J) of an LED substrate (210). By this engagement, the cover (230) is attached to the frame (220), and the cover-side substrate fixing portion (232-1) fixes the LED substrate (210) to the frame-side flat portion (221).

Description

Light source device and lighting fixture

The present invention is a divisional application of an invention patent application having an application date of 2015, 2 and 23, an application number of 201580010344.3 (international application number of PCT/JP2015/055075) and an invention name of "lighting fixture".

Technical Field

The present invention relates to a fixing structure of an LED substrate in a lighting fixture having the LED substrate.

Background

Conventionally, there is a lighting fixture in which LED packages are arranged linearly. For example, patent document 1 discloses a lighting device including: a light source unit having a plurality of LEDs mounted on a surface of a substrate; a heat radiation member abutting against the back surface of the substrate; a reflecting plate disposed on a front surface side of the substrate; an appliance body holding the light source unit and the heat radiating member; and a fixing member for fixing the substrate to the heat dissipating member. In the lighting fixture, the fixing member is integrally configured with the reflector, an attachment portion attached to the fixture body, and a holding portion provided on a non-reflection surface side of the reflector and holding the substrate with an elastic force between the fixing member and the fixture body.

Prior art documents

Patent document

Patent document 1, Japanese patent laid-open No. 2012 and 226957

Disclosure of Invention

Problems to be solved by the invention

In patent document 1, the substrate is held by the reflecting plate, but the reflecting plate is composed of two left and right components, and the substrate is fixed by sliding on one side, and the number of components and the number of working man-hours are required, which causes problems such as an increase in cost and a reduction in working efficiency.

The invention aims to provide an illuminating device which can inhibit the increase of the number of parts and the reduction of the operation efficiency.

Means for solving the problems

The lighting fixture of the present invention is characterized in that,

the lighting device comprises:

an LED substrate on which a plurality of LEDs are arranged;

a frame having a flat portion abutting against the rear surface of the LED substrate; and

a cover integrally formed and having a light-transmitting cover-side body portion covering the LED substrate, a cover-side substrate fixing portion, and a cover-side frame engaging portion,

the cover is attached to the frame by engaging the cover-side frame engaging portion with the frame in a state where the cover-side substrate fixing portion is in contact with the LED mounting surface of the LED substrate, and the cover-side substrate fixing portion fixes the LED substrate to the flat portion of the frame.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, since the cover can be attached to the frame and the LED substrate can be fixed to the frame by one operation of engaging the cover with the frame, the number of parts and the number of working steps can be reduced.

Drawings

Fig. 1 is a view of embodiment 1, and is a perspective view of a lighting fixture 1000.

Fig. 2 is a view of embodiment 1, and is an exploded perspective view of the lighting fixture 1000.

Fig. 3 is a diagram of embodiment 1, and is a perspective view of the light source unit 200 with the light source cover 240 removed.

Fig. 4 is a sectional view a-a of fig. 3.

Fig. 5 is a view corresponding to the sectional view a-a in fig. 4, and is a view illustrating the mounting of the cover 230.

Fig. 6 is a diagram of embodiment 2, and is a diagram illustrating reflection of light 2.

FIG. 7 shows embodiment 3, and shows a projection 232-1-1.

Fig. 8 is an enlarged view of a portion a of fig. 7 of embodiment 3.

Detailed Description

Embodiment mode 1

In embodiment 1, as an example of the lighting apparatus of the present invention, a lighting apparatus 1000 in an inverted fuji-mountain shape that is attached to an attached portion such as a ceiling (hereinafter, the attached portion is exemplified by a ceiling, but is not limited to a ceiling) will be described. In the following description, for convenience, the ceiling surface side (the surface to be mounted) is referred to as the upper surface side, and the floor surface side (the opposite side to the surface to be mounted) is referred to as the lower surface side.

(features of the Lighting apparatus 1000)

The lighting fixture 1000 according to embodiment 1 is characterized in that the cover 230 can be attached to the frame 220 and the LED substrate 210 can be fixed to the frame 220 by engaging the cover 230 with the frame 220 as described later (fig. 4, 6, 7, and the like). A lighting fixture 1000 according to embodiment 1 will be described below with reference to fig. 1 to 8.

Fig. 1 is a perspective view of a lighting fixture 1000. Fig. 2 is an exploded perspective view of the lighting fixture 1000 shown in fig. 1. Fig. 3 is a perspective view of the light source cover 240 removed from the light source unit 200 shown in fig. 2.

(construction of Lighting apparatus 1000)

As shown in fig. 1 and 2, a lighting fixture 1000 (lighting device) includes a main body 100 provided to be in contact with a ceiling (mounted portion), and a light source 200 detachably mounted to the main body 100. The light source unit 200 is detachably attached so as to face the main body unit 100. Both ends of the light source unit 200 are covered with the light source cover 240.

Fig. 3 is a perspective view of the light source unit 200, and is a perspective view in which the light source cover 240 is removed from the light source unit 200 of fig. 2. Fig. 4 is a sectional view a-a of fig. 3. As shown in fig. 3 and 4, the light source unit 200 includes an LED substrate 210 (light source unit), a frame 220, and a cover 230.

(LED substrate)

The lighting fixture 1000 (fig. 1) is elongated, and the LED substrate 210 is also elongated. A plurality of LEDs 212 are mounted on the LED substrate 210 along the longitudinal direction of the mounting surface 211J of the substrate 211.

(frame 220)

The frame 220 is made of metal such as aluminum or iron, and heat emitted from the LEDs 212 is transmitted to the frame 220 (frame-side flat portion 221) via the substrate 211 and dissipated. The frame 220 functions as a fixing member for fixing the LED substrate 210 and a heat dissipation member for dissipating heat of the LED substrate 210. The frame 220 is formed in a long strip shape having substantially the same length as the main body 100 (fig. 2). As shown in fig. 4, the frame 220 has a frame-side flat portion 221 that abuts against the back surface of the LED substrate 210 (the surface on the back side of the mounting surface 211J). The frame 220 is formed into a substantially コ -shaped cross section, and has side panels 222 rising from both sides of a long rectangular frame-side flat portion 221 to form side surfaces. The end portion of the side panel 222 in the standing direction is curled in the longitudinal direction of the frame 220 (side panel curled portion 222R).

(cover 230)

The cover 230 is made of a light-transmitting resin containing a transparent or light-diffusing material such as polycarbonate or acrylic. The cover 230 is an integrally formed product. As shown in fig. 4, the cover 230 has a flat plate-shaped cover-side flat portion 232 that contacts the frame-side flat portion 221, a translucent cover-side body portion 233 that covers the LED substrate 210, and claw portions 234 (cover-side frame engaging portions). The cover-side body 233 rises from the cover-side flat portion 232 to cover the LED substrate 210. Cover-side substrate fixing portions 232-1 are formed at the end portions of the respective cover-side flat portions 232 near the LED substrate 210. A side plate-shaped claw portion 234 is erected in a wall shape from the back surface of the cover-side flat portion 232 in the longitudinal direction (fig. 3). The claw distal end portion 234R is formed into a curved arc shape having a shape matching the side panel curled portion 222R.

(engagement of cover 230 and frame 220)

Referring to fig. 5, the engagement between the cover 230 and the frame 220 will be described. When the cover 230 is engaged with the frame 220, the worker elastically deforms and expands the claw portions 234 of the cover 230 as shown by the broken lines in a state where both end portions of the LED board 210 in the longitudinal direction are pressed by the respective cover-side board fixing portions 232-1, and engages the claw portions 234 of the cover 230 with the side panel 222 of the frame 220. That is, the dimension L1 shown in fig. 4 is determined by considering the dimension L1 on the cover 230 side and the dimension L1 on the frame 220 side, and considering the thickness of the LED board 210, the dimension L2 is the step dimension of the cover-side board fixing portion 232-1 with respect to the cover-side flat portion 232 (the dimension L2 on the cover 230 side). According to these dimensional relationships, the LED substrate 210 is pressed and fixed to the frame 220 (frame-side flat portion 221) by the cover-side substrate fixing portion 232-1, and heat radiated from the LEDs 212 can be efficiently transmitted to the frame 220. The LED substrate 210 may be fixed only by the cover 230, but an adhesive having good heat conductivity such as silicon may be applied between the LED substrate 210 and the frame 220 (frame-side flat portion 221) and bonded, and may be fixed by the cover 230.

The lighting fixture 1000 of embodiment 1 described above is characterized by a structure in which a part of the cover 230 presses the LED substrate. The cover 230 is an integrally molded product and is fixed to the frame 220 as a heat dissipating member by being fitted thereto. When the LED substrate 210 is fixed to the frame 220, a part (claw portion) of the cover 230 has a function of fixing the LED substrate, and the LED substrate 210 can be fixed by one operation of fitting the cover 230 into the frame (heat dissipation member). This has the effect of reducing the number of parts, the number of working steps, and the like.

Embodiment mode 2

Fig. 6 shows a cross-sectional view a-a of embodiment 2 (position of cross-sectional view a-a of fig. 3 of embodiment 1). As shown in fig. 6, the light emitted from the LED212 includes light 1 emitted through the cover-side body 233 and light 2 reflected by the cover inner surface (point P). The light 2 reflected by the inner surface (point P) of the cover-side body 233 is reflected again by the cover-side flat portion 232 (including the cover-side substrate fixing portion 232-1) (point Q) inside the cover, and is emitted from the cover-side body 233. Here, by making cover side flat portion 232 of cover 230, which becomes an internal reflection surface, a highly reflective material (cover side flat portion 232A, cover side substrate fixing portion 232-1A) having a reflectance larger than that of cover side main body portion 233, it is possible to improve light emission efficiency from cover 230. The highly reflective material is a material of the same material as the light transmissive material of the cover-side body 233, for example, polycarbonate, and 2 kinds of materials can be extruded by integral molding. In addition, when a highly reflective material is applied to the surface of the substrate 211, the optical efficiency can be further improved.

The cover 230 of the lighting fixture of embodiment 2 is integrally molded from 2 resin materials, the light-emitting portion (cover-side body portion 233A) is made of a light-transmitting material, and the reflecting portion (cover-side flat portion 232A including the cover-side substrate fixing portion 232-1A) is made of a high-reflection material having a reflectance of 90% or more. This has the effect of improving the light extraction efficiency.

Embodiment 3

Fig. 7 and 8 (enlarged view of part a) are sectional views a-a showing the cover-side substrate fixing portion 232-1 of embodiment 3 (position of section a-a of fig. 4 of embodiment 1).

As shown in fig. 7 and 8, a projection 232-1-1 is provided on a surface (portion) of the cover-side substrate fixing portion 232-1 that contacts the mounting surface 211J of the substrate 211. The substrate 211 can be reliably pressed against the frame 220 (frame-side flat portion 221) by the projection 232-1-1. The protrusion 232-1-1 is elongated along the plurality of LEDs in fig. 3.

In addition, the embodiments 1 to 3 may be combined in whole or in part.

Description of reference numerals

100 main body, 200 light source, 210 LED substrate, 211J mounting surface, 212 LED, 220 frame, 221 frame side flat part, 222 side panel, 222R side panel curled part, 230 cover, 232A cover side flat part, 232-1A cover side substrate fixing part, 232-1-1 protrusion, 233A cover side main body, 234 claw part, 234R claw part front end part, 240 light source cover part and 1000 lighting apparatus.

Claims

1. A light source device, wherein,

the light source device includes:

a light source;

a frame having at least two surfaces, the light source being disposed on one surface, and a side panel rising from the surface on which the light source is disposed in a direction toward a back surface of the surface along a side in a longitudinal direction of a portion on which the light source is disposed; and

a cover having a main body portion made of a light transmitting material and covering the light source, a frame engaging portion projecting from the main body portion along the other surface of the frame and having a front end portion engaging with an end portion in a standing direction of the side panel, and a flat portion made of a material having a reflectance larger than that of the main body portion and serving as an internal reflection surface facing the main body portion,

the frame engaging portion is arranged at a position further toward the outside than the light source in the width direction of the light source,

the cover has a fixing portion protruding from the flat portion along the one surface and made of the same material as that of the flat portion, and a protrusion is provided at a portion of the fixing portion that contacts the mounting surface of the substrate.

2. The light source device according to claim 1,

the frame has a third surface different from the one surface and the other surface,

the cover includes a second frame engaging portion that is elastically deformable and protrudes from the main body along the third surface of the frame, in addition to the frame engaging portion that is the first frame engaging portion,

the first frame clamping part and the second frame clamping part clamp the frame.

3. A light source device, wherein,

the light source device includes:

a light source;

a frame having at least two surfaces, the light source being disposed on one surface serving as a light source disposition portion for disposing the light source, and having a side surface plate rising from the surface on which the light source is disposed along a side in a longitudinal direction of a portion on which the light source is disposed in a direction toward a rear surface of the surface; and

the frame engaging portion is arranged at a position further toward the outside than the light source arrangement portion in the width direction of the light source,

4. A light source device, wherein,

the light source device includes:

a light source;

the frame has a third surface different from the light source arrangement portion and the other surface,

the light source arrangement portion is sandwiched between the first frame engagement portion and the second frame engagement portion,

5. A lighting device comprises a lighting device body, wherein,

the lighting device comprises the light source device according to any one of claims 1 to 4,

the light source device is attached to the lighting fixture body.