JP6904720B2 - Luminous body - Google Patents

Description

The present invention relates to a light emitter.

Conventionally, a light emitting body having a light emitting unit and an anode electrode and a cathode electrode is known. In such a light emitting body, a lead wire is electrically connected to the anode electrode and the cathode electrode, and electric power is supplied from an external power source or the like through the lead wire (for example, Patent Document 1). The lead wires are connected to the anode electrode and the cathode electrode by soldering or the like.

Japanese Unexamined Patent Publication No. 2016-152065

Here, if the illuminant is small and the distance between the anode electrode and the cathode electrode is short, manual soldering becomes difficult. On the other hand, depending on the configuration of the electronic device on which the illuminant is mounted, it may be preferable to extend and bundle a plurality of lead wires in the same direction. However, if the distance between the anode electrode and the cathode electrode is long, the leads will lead. It becomes difficult to bundle the lines.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a light emitting body having a degree of freedom in the connection position of lead wires.

The invention disclosed in the present application in order to solve the above problems has various aspects, and the outline of typical ones of these aspects is as follows.

(1) The light emitting portion, the first electrode for connecting the first lead wire provided around the light emitting portion, and the second electrode for connecting the second lead wire provided around the light emitting portion , which have different polarities from the first electrode. The first electrode is provided at any one corner of the rectangular portion, and has a plurality of second electrodes, a base having a rectangular base with a light emitting portion in the center, and the first electrode. The plurality of second electrodes are provided at three corners of the rectangular corners other than the corner where the first electrode is provided, respectively.

(2) In (1), a light emitting body in which the planar shape of the first electrode and the planar shape of the second electrode are different shapes.

(3) In (1) or (2), the light emitters having the same planar shape of the plurality of second electrodes.

(4) In any of (1) to (3), the rectangular light emitter is a rectangle.

(5) In any of (1) to (4), the light emitting portion is sandwiched together with the first lead wire electrically connected to the first electrode and the first electrode of the plurality of second electrodes. A light emitter having a second lead wire electrically connected to a second electrode provided at a position.

(6) In any of (1) to (4), the light emitting portion is sandwiched together with the first lead wire electrically connected to the first electrode and the first electrode of the plurality of second electrodes. A light emitter having a second lead wire electrically connected to a second electrode other than the second electrode provided at a position.

According to the aspects (1) and (4) of the present invention, it is possible to provide a light emitting body having a degree of freedom in the connection position of the lead wire.

According to the aspect (2) of the present invention, it is possible to provide a light emitting body capable of identifying the polarity of an electrode without separately providing a mark for identifying polarity.

According to the aspect (3) of the present invention, it is possible to provide a light emitting body capable of identifying that a plurality of second electrodes are electrodes having the same polarity.

According to the aspect (5) of the present invention, it is possible to provide a light emitting body that can be easily soldered by hand.

According to the aspect (6) of the present invention, it is possible to provide a light emitting body that can be easily arranged so that the first lead wire and the second lead wire extend in the same direction.

It is a top view of the light emitting body which concerns on this embodiment. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a top view which shows the state which the electrode substrate is exposed in the light emitting body which concerns on this embodiment. FIG. 3 is a cross-sectional view taken along the line BB of FIG. It is a top view which shows an example of the state which the lead wire is connected to the light emitting body which concerns on this embodiment. It is a top view which shows the state which the lead wire is soldered to the cathode electrode. FIG. 6 is a cross-sectional view taken along the line CC of FIG. It is a top view which shows an example of the state which the lead wire is connected to the light emitting body which concerns on this embodiment. It is a top view which shows an example of the state which the lead wire is connected to the light emitting body which concerns on this embodiment. It is a top view which shows an example of the state which the lead wire is connected to the light emitting body which concerns on the modification of this embodiment. It is a top view which shows an example of the state which the lead wire is connected to the light emitting body which concerns on the modification of this embodiment.

First, with reference to FIG. 1, an outline of the configuration of the light emitting body according to the present embodiment will be described. FIG. 1 is a plan view of a light emitting body according to the present embodiment. The light emitter 100 is mounted on a mounting substrate or the like and is used for various lighting devices such as a floodlight and illuminations.

As shown in FIG. 1, the light emitting body 100 has a light emitting portion 10 having a rectangular planar shape and a circular planar shape at the center thereof. Further, the light emitting body 100 has a cathode electrode 20a and anode electrodes 30a, 30b, 30c around the light emitting unit 10. Specifically, the cathode electrode 20a and the anode electrodes 30a, 30b, and 30c are provided at the corners of the rectangular illuminant 100, respectively. More specifically, the anode electrode 30a is provided at a position sandwiching the light emitting portion 10 together with the cathode electrode 20a, the anode electrode 30b is provided at a position adjacent to the cathode electrode 20a in the Y direction in the drawing, and the cathode electrode 20a is provided in the X direction in the drawing. The anode electrodes 30c were provided at positions adjacent to each other.

Next, the details of the configuration of the light emitting body according to the present embodiment will be described with reference to FIGS. 1 to 4. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a plan view showing a state in which the electrode substrate is exposed in the light emitting body according to the present embodiment. That is, FIG. 3 is a plan view showing a state before forming the second insulating layer 60 and the light emitting portion 10 described later. FIG. 4 is a cross-sectional view taken along the line BB of FIG.

The light emitting unit 10 has a light emitting element (not shown), and the light emitting element is sealed in a translucent sealing resin unit 11. Further, the light emitting portion 10 has a dam portion 12 made of a silicon resin or the like provided so as to surround the entire circumference of the sealing resin portion 11. It is preferable that several to several hundred light emitting elements are provided depending on the size of the light emitting body 100 and the like. Further, the sealing resin portion 11 contains a phosphor so that the light from the light emitting element has a desired wavelength. The dam portion 12 is provided to prevent the resin from flowing out when the sealing resin portion 11 is molded.

Further, as shown in FIG. 2, the light emitting body 100 has an aluminum base 40 and a first insulating layer 50 provided on the aluminum base 40. The first insulating layer 50 has an opening in the central portion, and the sealing resin portion 11 is formed on the aluminum base 40. A substrate for heat dissipation may be further provided on the lower surface of the aluminum base 40. Further, instead of the aluminum base 40, another metal base made of copper (Cu) or the like may be used.

Further, as shown in FIG. 3, the anode electrodes 30a, 30b, and 30c are composed of one electrode substrate 30. Further, the cathode electrode 20a is composed of one electrode substrate 20 provided apart from the electrode substrate 30. As shown in FIG. 2, the electrode substrate 30 and the electrode substrate 20 are provided on the first insulating layer 50. A second insulating layer 60 is provided on the electrode substrate 30 and the electrode substrate 20. The second insulating layer 60 has an opening having a circular planar shape and an opening having a substantially triangular planar shape. The portion of the electrode substrate 20 exposed from the circular opening of the second insulating layer 60 corresponds to the cathode electrode 20a. Further, the portion of the electrode substrate 30 exposed from the substantially triangular opening of the second insulating layer 60 corresponds to the anode electrodes 30a, 30b, and 30c. A ceramic base may be used instead of the aluminum base 40 and the first insulating layer 50, and the electrode substrates 20 and 30 may be provided directly on the ceramic base.

In the present embodiment, as shown in FIG. 1 and the like, the planar shapes of the anode electrodes 30a, 30b, and 30c are formed into a substantially triangular shape, and the right-angled portion of the substantially triangular shape is configured to follow the corner portion of the base. In the configuration in which the planar shape of the base is rectangular and the light emitting portion 10 having a circular planar shape is provided in the center thereof, the shape of the anode electrodes 30a, 30b, 30c is where the area around the light emitting portion 10 is narrowed. By arranging the arrangement as described above, it is possible to provide a plurality of anode electrodes while securing a sufficient area for soldering the lead wire described later.

In the present embodiment, the planar shape of the cathode electrode 20a is circular, and the planar shape of the anode electrodes 30a, 30b, 30c is substantially triangular, but the present invention is not limited to this. However, it is preferable that the cathode electrode 20a and the anode electrodes 30a, 30b, 30c have different planar shapes. This is because if the planar shapes are different, it is possible to identify which polarity the electrode has, without providing a separate identification mark or the like. Further, in that case, it is preferable that the anode electrodes 30a, 30b, and 30c have the same planar shape as each other. As described above, the configuration in which the polarity of the electrode can be identified by checking the planar shape of the electrode is particularly effective when the light emitting body 100 is small and it is difficult to separately provide an identification mark or the like.

Next, the connection of the lead wire to the light emitting body will be described with reference to FIGS. 5 to 9. FIG. 5 is a plan view showing an example of a state in which a lead wire is connected to the light emitting body. FIG. 6 is a plan view showing a state in which the lead wire is soldered to the cathode electrode. FIG. 7 is a cross-sectional view taken along the line CC of FIG. FIG. 8 is a plan view showing an example of a state in which a lead wire is connected to the light emitting body according to the present embodiment. FIG. 9 is a plan view showing an example of a state in which a lead wire is connected to the light emitting body according to the present embodiment.

As described above, the light emitter 100 has one cathode electrode 20a and three anode electrodes 30a, 30b, and 30c. In the light emitting body 100, a lead wire is electrically connected to the cathode electrode 20a and any one of the three anode electrodes 30a, 30b, and 30c, and power is supplied to these electrodes from an external power source or the like through the lead wire. Driven by being supplied. According to the configuration of the light emitting body 100 of the present embodiment, the connection position of the lead wire can be selected according to the direction in which the lead wire is extended to the outside of the light emitting body 100.

As shown in FIG. 5, by connecting the lead wire to the cathode electrode 20a and the anode electrode 30b adjacent to the cathode electrode 20a in the Y direction, the lead wire 200 and the lead wire 300 are both extended in the X direction and arranged. be able to. By selecting the anode electrode 30b as the anode electrode for connecting the lead wire 300 in this way, the lead wire 200 and the lead wire 300 can be provided in the light emitting body 100 in a bundled state.

The lead wire may be connected to the electrode by soldering. Specifically, as shown in FIGS. 6 and 7, the lead wire 200 may be electrically connected to the cathode electrode 20a by forming the solder joint portion 400. Although not shown, the lead wire 300 may also be electrically connected to the anode electrode 30b by a solder joint.

Further, as shown in FIG. 8, by connecting the lead wire to the cathode electrode 20a and the anode electrode 30c adjacent to the cathode electrode 20a in the X direction, both the lead wire 200 and the lead wire 300 are extended in the Y direction. Can be placed. By selecting the anode electrode 30c as the anode electrode for connecting the lead wire 300 in this way, the lead wire 200 and the lead wire 300 are provided in the light emitting body 100 in a bundled state in the same manner as in the state shown in FIG. Is possible.

On the other hand, as shown in FIG. 9, the distance between the electrodes to be soldered is increased by connecting the lead wires to the cathode electrode 20a and the anode electrode 30a provided on the opposite side of the light emitting portion 10 with respect to the cathode electrode 20a. Can be far away. If the distance between the electrodes to which the lead wires are soldered is short, it is difficult to solder manually. However, soldering can be performed by soldering to the electrodes arranged diagonally of the rectangular illuminant 100. It will be easy. Selecting the anode electrode 30a as the anode electrode to which the lead wire 300 is connected is particularly effective when the illuminant 100 is small.

As described above, in the light emitting body 100 of the present embodiment, the user can select the anode electrode to which the lead wire is connected according to the direction in which the lead wire is extended and the size of the light emitting body 100. When manually soldering to the small illuminant 100, it is preferable to select the anode electrode 30a which is far from the cathode electrode 20a as the anode electrode to which the lead wire 300 is connected. On the other hand, when it is desired to extend the two lead wires in the same direction and arrange them, it is preferable to select the anode electrodes 30b and 30c adjacent to the cathode electrode 20a as the anode electrodes for connecting the lead wires 300.

In the present embodiment, the light emitter 100 having a square outer shape has been shown, but the present invention is not limited to this, and the outer shape may be rectangular. For example, when the outer shape of the illuminant 100 is a rectangle whose Y direction is longer than the X direction, a lead wire can be connected to the anode electrode and the cathode electrode which are adjacent to each other in the Y direction and have a long distance between the electrodes. It becomes easier to perform soldering by work. On the other hand, by connecting the lead wires to the anode electrode and the cathode electrode which are adjacent to each other in the X direction and have a short distance between the electrodes, it becomes easy to extend the two lead wires in the same direction and bundle them.

In the present embodiment, the configuration in which one cathode electrode is provided and three anode electrodes are provided is shown, but the configuration may be such that three cathode electrodes are provided and one anode electrode is provided. In that case, the user can select which of the plurality of cathode electrodes the lead wire to be connected to the cathode electrode is to be connected.

Further, the number of anode electrodes is not limited to three, and at least two or more may be used including the anode electrodes provided at positions sandwiching the light emitting portion 10 together with the cathode electrodes.

A light emitting body 500 according to a modified example of the present embodiment will be described with reference to FIGS. 10 and 11. 10 and 11 are plan views showing an example of a state in which a lead wire is connected to a light emitting body according to a modified example of the present embodiment. The same reference numerals are used for the same configuration as that of the light emitter 100 described with reference to FIG.

As shown in FIGS. 10 and 11, the light emitting body 500 has a light emitting portion 10 having a rectangular planar shape and a circular planar shape at the center thereof. Further, the light emitting body 500 has cathode electrodes 20a and 20b and anode electrodes 30a and 30c around the light emitting unit 10. Specifically, the cathode electrodes 20a and 20b and the anode electrodes 30a and 30c are provided at the corners of the rectangular illuminant 100, respectively. More specifically, the anode electrode 30a is provided at a position sandwiching the light emitting portion 10 together with the cathode electrode 20a, and the anode electrode 30c is provided at a position sandwiching the light emitting portion 10 together with the cathode electrode 20b. The cathode electrode 20a and the cathode electrode 20b are composed of one electrode substrate, and the anode electrode 30a and the anode electrode 30c are composed of one electrode substrate.

The planar shapes of the cathode electrodes 20a and 20b are circular, and the planar shapes of the anode electrodes 30a and 30c are substantially triangular, but the present invention is not limited to this. However, it is preferable that the cathode electrodes 20a20b and the anode electrodes 30a and 30c have different planar shapes. This is because if the planar shapes are different, it is possible to identify which polarity the electrode has, without providing a separate identification mark or the like. Further, in that case, it is preferable that the cathode electrodes 20a and 20b have the same planar shape as each other and the anode electrodes 30a and 30c have the same planar shape as each other.

In the configuration of the illuminant 500, there are four patterns in which the cathode electrode 20a is selected and the anode electrode 30a or the anode electrode 30c is selected, or the cathode electrode 20b is selected and the anode electrode 30a or the anode electrode 30c is selected. Allows the user to select the connection position of the lead wire.

For example, as shown in FIG. 10, the lead wire 200 and the lead wire 300 are both extended in the Y direction by connecting the lead wire to the cathode electrode 20b and the anode electrode 30a adjacent to the cathode electrode 20b in the X direction. Can be done. In this way, the lead wire 200 and the lead wire 300 are bundled by selecting the anode electrode 30a as the anode electrode for connecting the lead wire 300 and selecting the cathode electrode 20b as the cathode electrode for connecting the lead wire 200. It can be provided on the light emitting body 100 in the state.

On the other hand, as shown in FIG. 11, the distance between the electrodes to be soldered is increased by connecting the lead wires to the cathode electrode 20b and the anode electrode 30c provided on the opposite side of the light emitting portion 10 with respect to the cathode electrode 20b. Can be far away. When the distance between the electrodes to which the lead wires are soldered is short, it is difficult to solder manually. However, soldering can be performed by soldering to the electrodes arranged diagonally of the rectangular illuminant 500. It will be easy. It is particularly effective when the illuminant 100 is small, selecting the anode electrode 30c as the anode electrode connecting the lead wire 300 and selecting the cathode electrode 20b as the cathode electrode connecting the lead wire 200.

The cathode electrodes 20a and 20b of the present embodiment and the modified examples have a configuration corresponding to the first electrode of the present invention, the anode electrodes 30a, 30b and 30c have a configuration corresponding to the second electrode, and the lead wire 200 has a configuration. The configuration corresponds to the first lead wire, and the lead wire 300 corresponds to the second lead wire.

Although the embodiment according to the present invention has been described above, the specific configuration shown in this embodiment is shown as an example, and it is not intended to limit the technical scope of the present invention to this. Those skilled in the art may appropriately modify these disclosed embodiments, and it should be understood that the technical scope of the invention disclosed herein also includes such modifications.

10 Light emitting part, 11 Encapsulating resin part, 12 Dam part, 20 Electrode substrate, 20a, 20b Cathode electrode, 30 Electrode substrate, 30a, 30b, 30c Anode electrode, 40 Aluminum base, 50 First insulating layer, 60 Second Insulation layer, 100,500 light emitters, 200 lead wires, 300 lead wires, 400 solder joints.

Claims (6)

Light emitting part and
The first electrode for connecting the first lead wire provided around the light emitting portion and
A plurality of second electrodes for connecting the second lead wire , which are different in polarity from the first electrode and are provided around the light emitting portion,
A base having a rectangular plane shape with the light emitting part in the center,
Have,
The first electrode is provided at any one corner of the rectangular corner.
The plurality of second electrodes are provided at three corners of the rectangular corners other than the corner where the first electrode is provided.
Luminous body. The light emitter according to claim 1, wherein the planar shape of the first electrode and the planar shape of the second electrode are different shapes. The light emitter according to claim 1 or 2, wherein the plurality of second electrodes have the same planar shape. The light emitter according to any one of claims 1 to 3, wherein the rectangle is a rectangle. The first lead wire electrically connected to the first electrode and
A second lead wire electrically connected to a second electrode provided at a position sandwiching the light emitting portion together with the first electrode among the plurality of second electrodes.
The illuminant according to any one of claims 1 to 4. The first lead wire electrically connected to the first electrode and
A second lead wire electrically connected to a second electrode other than the second electrode provided at a position sandwiching the light emitting portion together with the first electrode among the plurality of second electrodes.
The illuminant according to any one of claims 1 to 4.

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