JP2014241248A - Lightening fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightening fixture capable of preventing a shadow of a wiring line for electrically connecting substrates on which LEDs are arranged with each other from being reflected on a cover.SOLUTION: A lightening fixture includes a plurality of substrates 3 whose surface has a plurality of LEDs 2 arranged in a straight line, a frame 4 on which a plurality of substrates 3 are connected in a longitudinal direction, a translucent cover 5 for covering an emitting side of the LEDs 2 and transmitting the light emitted from the LEDs 2, a wiring line part 6 for electrically connecting the plurality of substrates 3 with each other inside the cover 5, and a wiring line fixing part 10 for fixing a portion astride a connection part between the plurality of substrates 3 to both ends of the substrate 3 orthogonally intersecting with the longitudinal direction of the substrate 3 so that the portion does not protrude more than the surface of the substrate 3 on each of a pair of wiring lines 7 of the wiring line part 6.

Description

  The present invention relates to a lighting fixture.

  Conventionally, there is a lighting fixture in which a plurality of substrates on which LED packages are arranged in a straight line are connected in the longitudinal direction. When connecting boards, they are often connected with wiring to supply power, but the connected wiring blocks the light from the LEDs or appears as a shadow on the cover. There was a case to lose.

  Therefore, there is a technique in which a power supply holder is provided at a connection portion between substrates, and wiring is held at both end positions on the surface, which is an LED placement surface of the substrate (see, for example, Patent Document 1).

JP 2012-64391 A (summary)

  In patent document 1, since wiring is hold | maintained on the board | substrate surface in which LED is arrange | positioned, it is inadequate as a countermeasure which eliminates a shadow, and the further improvement is calculated | required.

  The present invention has been made in view of the above, and an object of the present invention is to provide a lighting apparatus capable of preventing shadows due to wiring electrically connecting substrates on which LEDs are arranged from being reflected on a cover. And

  The lighting fixture according to the present invention covers a plurality of substrates in which a plurality of LEDs are linearly arranged on the surface, a frame on which the plurality of substrates are connected in the longitudinal direction, and an emission side of the LEDs. A translucent cover that transmits light emitted from the wiring, a wiring portion that electrically connects the plurality of substrates within the cover, and a connecting portion between the plurality of substrates in each of the pair of wirings of the wiring portion Wiring fixing portions are provided for fixing to both ends of the substrate in a direction orthogonal to the longitudinal direction of the substrate so that the straddling portion does not protrude from the surface of the substrate.

  According to the present invention, it is possible to prevent shadows due to wirings that electrically connect the substrates from being reflected on the cover.

It is a front view in the state where a part of cover was deleted in the lighting fixture concerning Embodiment 1 of the present invention. It is AA sectional drawing of a state with a cover in FIG. It is a principal part expansion perspective view for demonstrating the structure of the electrical connection part of the board | substrates of FIG. It is explanatory drawing of the shape of the cover of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of drawing shown below. Moreover, the same code | symbol is attached | subjected to the same structure in each figure.

Embodiment 1 FIG.
FIG. 1 is a front view showing a state where a cover is partially deleted in the lighting apparatus according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line AA in FIG.

  The lighting fixture 1 is used by being attached to, for example, a ceiling surface. The luminaire 1 has an elongated substrate 3, and a plurality of LEDs 2 are mounted linearly in the longitudinal direction on the surface (the lower surface in FIG. 2) of the substrate 3, and emits linear light. .

  The lighting fixture 1 has a frame 4 that constitutes the fixture body, and a plurality of substrates 3 are placed on a long plate-like pedestal 4a of the frame 4 in a longitudinal direction, and are fixed by bonding or screws. . The frame 4 is made of a metal such as aluminum and has a function of radiating heat generated by the LED 2. A cover 5 that covers the emission side of the LED 2 is attached to the frame 4.

  The cover 5 includes an arcuate light emitting surface portion 5a facing the LED 2 and a pair of side surface portions 5b protruding in opposite directions from both ends of the light emitting surface portion 5a, and the frame 4 is formed at the front ends of the pair of side surface portions 5b. It is locked to. The plate-like member constituting the cover 5 is made of a light-transmitting resin or the like, and has an effect of diffusing light emitted from the LED 2. Further, the cover 5 has an effect of diffusing the light to disperse the individual lights of the LEDs 2 and making them appear as surface emission.

  A circuit (not shown) is provided on the back surface (upper surface in FIG. 2) of the substrate 3, and the adjacent substrates 3 are electrically connected to each other by a wiring section 6 described later and receive power supply from a power source.

  Hereinafter, a structure for preventing the wiring 7 of the wiring portion 6 from being reflected in the cover 5 will be described with reference to FIGS. 2 and 3.

FIG. 3 is an enlarged perspective view of a main part for explaining the structure of the electrical connection portion between the substrates in FIG.
The wiring unit 6 includes a pair of wirings 7 that electrically connect the substrates 3 to each other, and a plurality of connectors 8 that are attached to both ends of the pair of wirings 7 and provided on the surface of each substrate 3. . The plurality of connectors 8 are connected to a circuit (not shown) on the back surface of the substrate 3.

  In each of the pair of wirings 7, a portion straddling the connecting portion between the substrates 3, here, a central portion of each of the pair of wirings 7, the substrate is fixed by a wiring fixing unit 10 described later so as not to protrude downward from the surface of the substrate 3. 3 is fixed to both ends of the substrate 3 in a direction orthogonal to the longitudinal direction of the substrate 3. Hereinafter, details of the wiring fixing unit 10 will be described.

  The frame 4 includes a pair of wall surfaces 4b (see FIG. 2) facing the both end surfaces 3a of the substrate 3 in a direction orthogonal to the longitudinal direction of the substrate 3, and the pair of wall surfaces 4b and both end surfaces of the substrate 3 are opposed to each other. A gap S is formed between 3a and 3a. And the wiring fixing | fixed part 10 has the fixing tool 9 of a U-shaped cross section, and each of the both-side piece 9a of the fixing tool 9 is pushed into the clearance gap S, and the outer surface of both-side piece 9a and a pair of wall surface 4b The pair of wirings 7 is fixed by sandwiching the pair of wirings 7 therebetween. Note that the fixing tool 9 is fixed to the frame 4 by the engaging portion 9 b at the tip of the both side pieces 9 a being engaged with the base 4 a of the frame 4. By using the wiring fixing part 10 in this way, the pair of wirings 7 are fixed without protruding from the surface of the substrate 3 to the light emitting surface part 5a side of the cover 5, so that it can be prevented from being shaded. .

  In addition, a protruding piece 4c extending inward (LED side) is formed at the end of the pair of wall surfaces 4b on the light emitting surface 5a side (the end on the emission direction side of the LED 2), and a pair of wirings are formed by the protruding pieces 4c. 7 is covered when viewed from the cover 5 side. For this reason, even if the center part of the wiring 7 is bent downward, it can be supported by the protruding piece 4c, and the wiring 7 can be prevented from being shaded.

FIG. 4 is an explanatory diagram of the shape of the cover of FIG.
The cover 5 has the light emitting surface portion 5a and the pair of side surface portions 5b as described above, and the side surface portion 5b portion, that is, the range a of the cover 5, looks up from the bottom of the luminaire 1 attached to the ceiling surface. This is a part that is difficult to see. For this reason, even if a shadow is formed, the position of the side surface portion 5b, in other words, the position of the corner portion 5c where the light emitting surface portion 5a and the side surface portion 5b are connected is set so that the shadow falls within the range a. Specifically, the height position of the corner portion 5c in the optical axis O direction is set closer to the light emitting surface portion 5a than the region in which the shadow of the components in the cover 5 may be reflected.

  In the first embodiment, among the constituent parts in the cover 5, the shadow produced by the protruding piece 4 c part of the frame 4 located at the height position on the light emitting surface part 5 a side than the LED 2 is the lowest end part in the optical axis O direction. It is a shadow that occurs up to. For this reason, the position of the corner | angular part 5c is set below the lower end part of the shadow produced by the protrusion piece 4c part of the flame | frame 4. FIG. By setting the position of the corner portion 5c to this position, even if a shadow is formed by the components in the cover 5, it falls within the range a that is difficult for the user to see, so that it is possible to prevent the appearance from being impaired.

  As described above, according to the first embodiment, in each of the pair of wirings 7 of the wiring part 6 that electrically connects the substrates 3, the part straddling the connecting part between the substrates 3 is from the surface of the substrate 3. Since it fixed to the both ends of the board | substrate 3 so that it may not protrude, it can prevent that a pair of wiring 7 interrupts | blocks the light of LED2, or it becomes a shadow, and looks worse.

  In addition, the cover 5 emits light on the light emitting surface portion 5a side from the region where the shadow by the frame portion (specifically, the lower end portion of the protruding piece 4c) located at the height position on the light emitting surface portion 5a side than the LED 2 may appear. Since the height position in the direction of the optical axis O of the corner portion 5c where the surface portion 5a and the side surface portion 5b are continuous is set, it is possible to prevent the frame 4 and the connector 8 from being shaded and deteriorating in appearance.

  Further, since the center portions of the pair of wires 7 need only be pushed into the gap S when the center portions of the pair of wires 7 are fixed, the center portions of the pair of wires 7 can be easily fixed. Further, by locking the locking portions 9 b of the both side pieces 9 a of the fixing tool 9 to the base 4 a of the frame 4, the fixing tool 9 can be easily locked and fixed to the frame 4.

  In addition, since the center part of the pair of wirings 7 is covered by the protruding piece 4c provided at the end of the pair of wall surfaces 4b on the light emitting surface part 5a side as viewed from the cover 5 side, the center part of the wirings 7 is temporarily lowered. Even if it has been bent, it can be supported by the protruding piece 4c, and the wiring 7 can be prevented from being shaded.

  DESCRIPTION OF SYMBOLS 1 Lighting fixture, 2 LED, 3 board | substrate, 3a both end surface, 4 frame, 4a base, 4b wall surface, 4c protrusion piece, 5 cover, 5a light emission surface part of a cover, 5b cover side surface, 5c corner | angular part, 6 wiring part, 7 Wiring, 8 Connector, 9 Fixing tool, 9a Side piece, 9b Locking part, 10 Wiring fixing part, O Optical axis, S clearance, a range.

Claims (5)

A plurality of substrates in which a plurality of LEDs are linearly arranged on the surface;
A frame on which the plurality of substrates are connected in the longitudinal direction;
A light-transmitting cover that covers the emission side of the LED and transmits light emitted from the LED;
A wiring portion that electrically connects the plurality of substrates inside the cover;
In each of the pair of wirings of the wiring part, a portion straddling the connecting part between the plurality of substrates is fixed to both ends of the substrate in a direction orthogonal to the longitudinal direction of the substrate so as not to protrude from the surface of the substrate. A lighting fixture comprising a wiring fixing portion. The cover has a light emitting surface portion facing the LED and a pair of side surface portions projecting in opposite directions from both ends of the light emitting surface portion, and the corner portion where the light emitting surface portion and the side surface portion are continuous with each other. The lighting fixture according to claim 1, wherein the height position of the LED in the optical axis direction is set closer to the light emitting surface portion than a region in which a shadow by a component in the cover may be reflected. The frame includes a pedestal on which the substrate is placed, and a pair of wall surfaces that are spaced from and opposed to both end surfaces of the substrate in a direction orthogonal to the longitudinal direction of the substrate,
In the wiring fixing portion, both side pieces of the fixture having a U-shaped cross section are pushed into a gap between both end surfaces of the substrate and the pair of wall surfaces of the frame, and the both side pieces and the pair of wall surfaces The lighting apparatus according to claim 1, wherein the pair of wirings are sandwiched and fixed between the lighting fixtures. The fixing device includes a locking portion at each tip of the both side pieces, and is locked and fixed to the frame by locking the locking portion to the pedestal of the frame. The lighting fixture according to claim 3. In the pair of wall surfaces of the frame, projecting pieces extending toward the LED are formed at end portions on the emission direction side of the LEDs, and the projecting pieces are provided at the center portions of the pair of wires in the wiring portion. The luminaire according to claim 3 or 4, wherein the luminaire is covered when viewed from the cover side.

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