JP5717495B2 - LED lighting fixtures - Google Patents

Description

  The present invention relates to an LED lighting apparatus using a light emitting diode (LED) as a light source.

  Conventionally, there is a technique related to an electrical connection device that electrically connects an electrical component to a wiring board. In Patent Document 1, a light emitting module is placed on a body to be attached, and a wiring board is electrically connected to a support portion formed on the body to be attached so as to narrow the light emitting module. Are provided for the light emitting module (for example, Patent Document 1).

JP 2010-146812 A

  However, for example, in Patent Document 1 described above, it is necessary to provide a plurality of screwing portions (screwing mechanisms) for one light emitting diode (electrical component) so that reliable electrical connection can be realized. Therefore, in the case of a multi-lamp light source using a plurality of light emitting diodes, there is a problem that the number of screwing points increases and the assembly time increases.

  In addition, since the electrical connection is made by pressing (narrow pressure) of the wiring board and the metal plate (attachment body) with screws (screwing mechanism), it must be made near the connection terminal of the wiring board. There was a problem that the insulation distance between the plate and the lighting fixture main body was difficult.

  Further, as a positioning of the light emitting diode (hereinafter referred to as LED), a guide portion is constituted by a support made of a metal plate (attached body). For this reason, when the attachment body is made of a metal material in consideration of heat radiation, the insulation distance becomes small between the connection terminal and the metal plate (attachment body).

  When a heat dissipation pattern made of copper with high thermal conductivity is provided on the entire top surface of the wiring board, the heat dissipation pattern, screws (screwing mechanism), and metal plate (attachment) are electrically connected. It becomes a route. For this reason, there is a problem that it is difficult to ensure a sufficient insulation distance because the distance is substantially equal to the thickness of the wiring board in the light emitting module side connection terminal and the wiring pattern to the heat radiation pattern.

  In addition, in the case of a light source in which a plurality of LEDs are arranged, there is a problem that it takes time to replace the LEDs due to a large number of screwing points.

  An object of the present invention is to provide a connector and an LED fixing structure capable of simplifying an assembling process of a light source using an LED.

The LED lighting apparatus of the present invention is
LED that emits light from the light emitting surface, a substrate mounted on one surface to be the mounting surface,
The back surface of the light emitting surface is mounted opposite to the mounting surface, and the LED having the light emitting surface, the positive electrode, and the negative electrode formed on the front surface of the light emitting surface side;
A first LED fixing portion for fixing the LED to the substrate, wherein a receiving portion that is pressed by receiving a pressing portion of a counterpart component is formed and electrically connected to the positive electrode of the LED A first LED fixing portion to which a lead wire electrically connected to the negative electrode of the LED is connected;
The second LED fixing portion as the counterpart component, wherein the receiving portion of the first LED fixing portion is pressed and the first LED fixing portion is pressed in the direction of the mounting surface, thereby allowing the first LED fixing portion to pass through the first LED fixing portion. A second LED fixing portion that fixes the LED to the substrate and electrically connects the lead wires to the positive electrode and the negative electrode is provided.

  According to the present invention, the structure can be simplified by reducing the number of fixing screws for fixing the LED and the connector, and reliable electrical connection can be achieved at the same time as reducing the number of assembly steps.

FIG. 3 is a perspective view illustrating an appearance of the lighting apparatus 100 according to the first embodiment. FIG. 3 is an exploded perspective view of the main part of the lighting fixture 100 of the first embodiment. FIG. 3 is a top view of the lighting apparatus 100 after assembling according to the first embodiment (direction arrow view). FIG. 3 shows a method for mounting LEDs on the metal plate according to the first embodiment. The elements on larger scale of the broken-line part B of FIG. FIG. 4 is a cross-sectional view taken along line A-A ′ of FIG. 3. The schematic diagram which shows the example of a connection of LED at the time of using the connector of Embodiment 1. FIG. The schematic diagram which shows another example of connection of LED at the time of using the connector of Embodiment 1. FIG. The schematic diagram which shows another example of connection of LED at the time of using the connector of Embodiment 1. FIG.

Embodiment 1 FIG.
With reference to FIGS. 1-9, the lighting fixture 100 of Embodiment 1 is demonstrated.
FIG. 1 is a perspective view showing the appearance of the lighting fixture 100.
FIG. 2 is an exploded perspective view of the light emitting unit 11 that is a main part of the lighting apparatus 100.
FIG. 3 is a top view of the lighting apparatus 100 (as viewed in the X direction).
FIG. 4 is a diagram illustrating a method of mounting the LED 5 on the metal plate 6.
FIG. 5 is a partially enlarged view of a broken line portion B in FIG.
6 is a cross-sectional view taken along the line AA ′ of FIG.
FIG. 7 is a schematic diagram showing an example of LED connection when a connector described later is used.
FIG. 8 is a schematic diagram showing another connection example of LEDs when a connector is used.
FIG. 9 is a schematic diagram showing still another connection example of LEDs when a connector is used.

  As shown in FIG. 1, the luminaire 100 includes a luminaire body 8, a frame 9, a mounting spring 10, and a light emitting unit 11.

(Light emitting unit 11)
As shown in FIG. 2, the light emitting unit 11 includes a metal plate 6, a connector 4, an LED 5 arranged so as to be in close contact with the metal plate 6 by the connector 4, and an internal reflector 3 that can fix a plurality of connectors 4 at the same time. And an external reflector 1 that is attached to the outside of the internal reflector 3 and controls the light distribution.

  As shown in FIG. 4, the metal plate 6 (substrate) has the LED 5 that emits light from the light emitting surface 53 mounted on one surface serving as the mounting surface 61. The LED 5 is mounted with the back surface of the light emitting surface 53 facing the mounting surface 61. In the LED 5, a light emitting surface 53, a positive electrode 51, and a negative electrode 52 are formed on the light emitting surface 53 side. The connector 4 (first LED fixing portion, referred to as connectors 4a and 4b when distinguished) has a function of fixing the LED 5 to the metal plate 6, and a function of electrically connecting the lead wire and the LED electrode. The connector 4 is formed with a connector screwing hole 41 (receiving portion, concave portion), which will be described later, and is electrically connected to a lead wire 72 electrically connected to the positive electrode 51 of the LED 5 and to the negative electrode 52. A lead wire 73 is connected. Each connector 4 covers the positive electrode 51 side and the negative electrode 52. The metal plate 6 is provided with a fitting portion 62 for positioning the connector 4. In FIG. 4, the fitting portion 62 is a hole formed in the metal plate 6. The connector 4 is provided with a protrusion (not shown) that fits into the hole. As shown in FIG. 4, the connector 4 can be temporarily fixed to the metal plate 6 by fitting the connector 4 to the fitting portion 62 of the metal plate 6. The LED 5 can be positioned on the metal plate 6 by temporarily fixing the LED 5 so as to be pressed by the connector 4. Further, since the lead wire 7 (wiring) is connected to the connector 4 in advance, a plurality of LEDs 5 can be connected in series or in parallel. Variations such as parallel connection will be described at the end of the first embodiment (FIGS. 7 to 9).

  Thus, in FIG. 4, the connector 4 a (positive electrode side fixing portion) is arranged so as to cover the positive electrode 51 side of the LED 5, has a connector screwing hole 41 (concave portion), and is connected to the positive electrode 51. 72 is connected. The connector 4b (negative electrode side fixing portion) is also arranged so as to cover the negative electrode 52 side of the LED 5, has a connector screwing hole 41, and a lead wire 73 connected to the negative electrode 52 is connected thereto. The internal reflector 3 has connector pressing portions 31 (positive side convex portions and negative side convex portions) that fit into the connector screwing holes 41 of the connectors 4a and 4b (shown in FIG. 6). As shown in FIG. 2, the LED 5 is temporarily fixed to the metal plate 6, and the internal reflection plate 3 is fixed to the metal plate 6 with the fixing screw portion 2. At this time, each connector pressing part 31 (positive side convex part, negative side convex part) of the internal reflector 3 presses each connector screw hole 41 (concave part) in the direction of the metal plate 6 and fits. Thus, each connector is electrically connected to the positive electrode 51 and the negative electrode 52 and fixes the LED 5 to the metal plate 6.

  As shown in FIG. 5, the connector 4 is provided with a connector screw fixing hole 41 that can be fixed by a fixing screw.

  As shown in FIG. 6, a connector pressing portion 31 is provided inside the resin internal reflector 3. The connector 4c in FIG. 6 has a connector screw hole 41 on the cross section, and the connector 4d has the connector screw hole 41 off the cross section. The internal reflection plate 3 is provided with a fixing screw portion 2 (FIGS. 2 and 6), and the internal reflection plate 3 is fixed to the metal plate 6 by the fixing screw portion 2. FIG. 2 shows the male screw 21 of the fixing screw portion 2 and the female screw 63 on the metal plate 6 side that receives the male screw 21.

(Fixing the LED 5 to the metal plate 6)
When the internal reflection plate 3 is fixed to the metal plate 6 by the fixing screw 2, the connector pressing portion 31 (FIG. 6) provided in the internal reflection plate 3 presses the connector screw fixing hole 41 toward the metal plate 6. To fit. By fitting so as to press in this way, the electrodes (the positive electrode 51 and the negative electrode 52 shown in FIG. 4) formed in the light emitting surface side direction of the LED 5 and the connector can be securely connected. At the same time, the LED 5 can be fixed to the metal plate 6. Thus, the internal reflection plate 3 (second LED fixing portion) has the connector pressing portion 31 (pressing portion, convex portion) shaped to fit into the connector screwing hole 41 of the connector 4 (first LED fixing portion). Then, the connector pressing portion 31 is fitted into the connector screw fixing hole 41 (receiving portion, recess) and presses the connector screw fixing hole 41 to press the connector 4 toward the mounting surface 61. By this pressing, the LED 5 is fixed to the metal plate 6 via the connector 4.

  Thus, by fixing the internal reflector 3 to the metal plate 6, both the connector 4 and the LED 5 can be fixed to the metal plate 6, so that the connector pressing portion 31 is connected to the connector screw fixing hole 41 of the connector 4. A reliable electrical connection is also possible by the force of pressing.

  In addition, since there is no conductive material such as a fixing screw in the vicinity of the connector 4, a sufficient electrical insulation distance can be secured and safety is improved.

  The light distribution can be changed by changing the structure of the reflecting portion of the external reflector 1.

  In the first embodiment, the LED 5 is fixed to the metal plate 6 by fitting the concave connector screwing hole 41 of the connector 4 and the convex connector pressing portion 31 of the internal reflector 3. However, this is an example. The pressing part provided in the internal reflecting plate 3 may be configured to fix the LED 5 to the metal plate 6 by pressing the pressed part provided in the connector 4 temporarily fixed to the metal plate 6. Therefore, the connector pressing portion 31 may be concave and the pressed portion provided on the connector 4 may be convex. However, with the configuration of the first embodiment described above, the connector pressing portion 31 can be fitted into the connector screw fixing hole 41 without using a screw by using the screw fixing connector 4.

Further, in the first embodiment described above, one LED 5 is fixed by the two connectors 4, but the following configuration may be used.
FIG. 7 is a schematic diagram in the case of connecting in parallel using the connector 4 and the connector 4-1. This is an example in which a connector 4-1 that electrically connects the positive electrodes of two LEDs 5 is used to configure a parallel connection. The connector 4-1 is formed with a recess that is pressed by the connector pressing portion 31.
FIG. 8 is a schematic diagram showing an example in which one LED 5 is fixed by one connector 4-2. 2, one LED 5 is fixed by two connectors 4. However, the connector 4-2 in FIG. 8 has a shape in which the two connectors 4 in the broken line B are integrated.
FIG. 9 shows an example in which a parallel circuit of LEDs is configured using three types of connectors 4, 4-1 and 4-2.
Even if a connector as shown in FIGS. 7 to 9 is used, the LED can be easily fixed to the substrate and made conductive.

  DESCRIPTION OF SYMBOLS 1 External reflecting plate, 2 Fixing screw part, 3 Internal reflecting plate, 21 Male screw, 31 Connector pressing part, 4 Connector, 41 Connector screwing hole, 5 LED, 51 Positive electrode, 52 Negative electrode, 53 Light emitting surface, 6 Metal Plate, 61 Mounting surface, 62 Fitting part, 63 Female thread, 7 Wiring, 8 Lighting fixture body, 9 Frame, 10 Mounting spring, 11 Light emitting unit, 100 Lighting fixture.

Claims (5)

LED that emits light from the light emitting surface, a substrate mounted on one surface to be the mounting surface,
The back surface of the light emitting surface is mounted opposite to the mounting surface, and the LED having the light emitting surface, the positive electrode, and the negative electrode formed on the front surface of the light emitting surface side;
A first LED fixing portion for fixing the LED to the substrate, wherein a receiving portion that is pressed by receiving a pressing portion of a counterpart component is formed and electrically connected to the positive electrode of the LED A first LED fixing portion to which a lead wire electrically connected to the negative electrode of the LED is connected;
The second LED fixing portion as the counterpart component, wherein the receiving portion of the first LED fixing portion is pressed and the first LED fixing portion is pressed in the direction of the mounting surface, thereby allowing the first LED fixing portion to pass through the first LED fixing portion. A second LED fixing portion for fixing the LED to the substrate and electrically connecting the lead wires to the positive electrode and the negative electrode ;
The second LED fixing portion is a reflecting portion that reflects light emitted from the LED,
The substrate includes a fitting portion,
The first LED fixing portion is fitted to the fitting portion. The first LED fixing part is:
A positive-side fixing portion that covers the positive electrode side of the LED and is formed with the receiving portion and connected to the lead wire that is electrically connected to the positive electrode;
A negative electrode side fixing that covers the negative electrode side of the LED and is formed with another receiving portion different from the receiving portion of the positive electrode side fixing portion, to which the lead wire electrically connected to the negative electrode is connected Consists of two separate fixed parts,
The second LED fixing part is
A positive electrode side pressing portion that presses the receiving portion of the positive electrode side fixing portion; and a negative electrode side pressing portion that presses the receiving portion of the negative electrode side fixing portion, the positive electrode side pressing portion and the negative electrode side pressing portion. And pressing the receiving part of the positive electrode side fixing part and the receiving part of the negative electrode side fixing part to press the positive electrode side fixing part and the negative electrode side fixing part in the direction of the mounting surface, The LED is fixed to the substrate through the positive electrode side fixing portion and the negative electrode side fixing portion, and the lead wires are electrically connected to the positive electrode and the negative electrode, respectively. Item 1. An LED lighting apparatus according to Item 1. The first LED fixing part is:
A concave recess is formed as the receiving portion,
The second LED fixing part is
The pressing part has a convex part shaped to fit into the concave part of the first LED fixing part, and the convex part fits into the concave part of the first LED fixing part and presses the concave part to thereby press the first LED fixing part. By pressing in the direction of the mounting surface, the LED is fixed to the substrate via the first LED fixing portion, and the lead wire is electrically connected to the positive electrode and the negative electrode. The LED lighting apparatus according to claim 1. The first LED fixing part is:
A positive-side fixing portion that covers the positive electrode side of the LED and is formed with the concave portion and connected to the lead wire electrically connected to the positive electrode;
A negative electrode side fixing portion that covers the negative electrode side of the LED and is formed with another concave portion different from the concave portion of the positive electrode side fixing portion, to which the lead wire electrically connected to the negative electrode electrode is connected; Consists of two separate fixed parts,
The second LED fixing part is
A positive electrode side convex portion that is a convex portion shaped to fit into the concave portion of the positive electrode side fixing portion, and a negative electrode side convex portion that is a convex shape shaped to fit into the concave portion of the negative electrode side fixing portion; A convex part and the negative electrode side convex part fit into the concave part of the positive electrode side fixing part and the concave part of the negative electrode side fixing part, respectively, and press the respective concave parts to press the positive electrode side fixing part and the negative electrode side. By pressing the fixing part in the direction of the mounting surface, the LED is fixed to the substrate via the positive electrode side fixing part and the negative electrode side fixing part, and the positive electrode and the negative electrode are respectively the LED lighting apparatus of claim 3 Symbol mounting, characterized in that for electrically connecting the lead wire. The first LED fixing part is:
As the receiving unit, LED lighting apparatus according to any one of claims 1 to 4, characterized in that to divert the screw holes in the female screw formed to correspond to a predetermined male screw.

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