JP2012134061A - Light-emitting unit, and light-emitting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting device capable of mechanically and electrically connecting light-emitting units mutually in spite of comparatively simple structure.SOLUTION: In the light-emitting device 12 formed by connecting a plurality of light-emitting units 11, the light-emitting device 12 includes a plurality of light-emitting units 11 respectively having a substrate 1 having a plurality of terminal pairs respectively made of first terminals T1, T3, ... and second terminals T2, T4, ... and one, or two or more of light-emitting elements 4 arranged on the substrate 1 and connected between a first connection section 13 where the first terminals T1, T3, ... are connected and the second terminal section 14 where the second terminals T2, T4, ... are connected; and conductive fixing sections 6 capable of mechanically retaining the light-emitting units 11 by being connected with the terminal pairs and light-emitting the light-emitting elements 4 by being conducted to the light-emitting elements 4. The light-emitting device 12 is formed by making the light-emitting units 11 connected with the fixing sections 6.

Description

  The present invention relates to a light emitting unit and a light emitting device using the same.

  Conventionally, a light emitting unit has been proposed that includes a rectifier circuit that rectifies an AC power supply and a light emitting element (for example, Patent Document 1).

JP 2001-35239 A

  A conventional light emitting unit can drive a light emitting element by rectifying an AC power source with a rectifier circuit. However, when a plurality of light emitting units are used to form one light emitting device, each light emitting unit requires an AC power supply, and there is a problem in that wiring work for the power supply becomes complicated.

  Therefore, an object of the present invention is to provide a light-emitting unit that can mechanically and electrically connect light-emitting units to each other, and a light-emitting device using the light-emitting unit, regardless of a relatively simple configuration.

A light emitting device according to an embodiment is a light emitting device formed by connecting a plurality of light emitting units,
A substrate having a plurality of terminal pairs each composed of a first terminal and a second terminal, and a first connection portion disposed on the substrate and connected to the first terminal, and the second terminal connected to the second terminal. A plurality of light-emitting units each including one or two or more light-emitting elements connected between two connection parts;
A conductive fixing part that is connected to the terminal pair and can mechanically hold the light emitting units and is electrically connected to the light emitting element to enable the light emitting element to emit light;
The light emitting units are shaped by being connected by the fixing portion.

  A light emitting unit according to an embodiment includes a substrate having a plurality of terminal pairs each including a first terminal and a second terminal, and a first connection unit disposed on the substrate and connected to the first terminal. One or two or more light emitting elements connected between the second connection portion to which the second terminal is connected are provided.

  According to the present invention, a light emitting device having an arbitrary shape can be obtained by mechanically and electrically connecting the light emitting units to each other by inserting a fixed portion having an arbitrary shape into a plurality of terminal pairs. In addition, when a light-emitting device is manufactured by combining a plurality of light-emitting units, all the light-emitting units can emit light with a single power source, so that wiring work for the power source can be reduced.

  Therefore, according to the present invention, it is possible to provide a light emitting unit capable of mechanically and electrically connecting the light emitting units to each other in spite of a relatively simple configuration, and a light emitting device using the light emitting unit.

It is a circuit diagram of the light emitting unit concerning one embodiment. It is a disassembled perspective view from the surface side of the light emission unit which concerns on one Embodiment. It is a disassembled perspective view from the back surface side of the light emission unit which concerns on one embodiment. It is a figure for demonstrating a fixing | fixed part. It is a figure for demonstrating one light-emitting device. It is the schematic of the lamp using one light-emitting device.

  A mode for carrying out the present invention will be described below with reference to the drawings. However, the form shown below exemplifies a light emitting unit for embodying the technical idea of the present invention and a light emitting device using the same, and does not limit the present invention to the following. In addition, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation.

(Embodiment 1)
FIG. 1 is a schematic circuit diagram of the light emitting unit 11 according to Embodiment 1, FIG. 2 is an exploded perspective view from the front side, and FIG. 3 is an exploded perspective view from the back side. As shown in FIGS. 1 to 3, the light emitting unit 11 according to the first embodiment has two pairs of terminals including a first terminal T1 and a second terminal T2, and a first terminal T3 and a second terminal T4. Between the board | substrate 1 and the 1st connection part 13 which is arrange | positioned on the board | substrate 1 and the two 1st terminals T1 and T3 were connected, and the 2nd connection part 14 to which the 2nd 2nd terminals T2 and T4 were connected. 40 light emitting element groups 4 (consisting of light emitting elements LE1 to LE40) connected in series, a transparent upper case 5-1 disposed on the upper side (light emitting surface side) of the substrate 1, and a lower side of the substrate 1 ( A lower case 5-2 disposed on the non-light emitting surface side and in contact with the upper case 5-1.

  According to the light-emitting unit 11 according to the first embodiment, the light-emitting element group 4 is electrically connected to the power source by inserting the conductive fixing portion 6 having any shape into the two terminal pairs to emit light. The element group 4 can emit light and the light emitting units 11 can be mechanically held to produce a light emitting device 12 having an arbitrary shape.

  The shape of the substrate 1 of the light emitting unit 11 according to the first embodiment may be any shape. For example, when a plurality of light emitting units 11 are combined to produce a cubic light emitting device 12, for example, FIGS. As shown, the shape of the substrate 1 is a square. For example, when the light emitting device 12 having a regular triangular pyramid is manufactured, for example, the shape of the substrate 1 is a regular triangle. The shape of the substrate 1 can be appropriately selected according to the shape of the light-emitting device 12 finally obtained.

  In the light emitting unit 11 according to the first embodiment, the first terminal T1 and the second terminal T2 form a pair of terminal pairs, and the first terminal T3 and the second terminal T4 form another pair of terminal pairs. The That is, two terminal pairs are formed by the two first terminals T1 and T3 and the two second terminals T2 and T4. However, the present invention is not limited to this, and if the substrate 1 is square, four terminal pairs may be formed to provide terminal pairs on each side of the square. The number of sides of the substrate 1 and the number of terminal pairs are not necessarily matched, but if the number of sides of the substrate 1 and the number of terminal pairs are matched, variations in assembly of the light emitting device 12 may be increased. This is preferable because it is possible. Further, a plurality of terminal pairs may be formed on one side of the substrate 1.

  In the light emitting unit 11 according to the first embodiment, the terminal pair may be provided at any location on the substrate 1, but if the light emitting unit 11 is formed near the outer periphery of the substrate 1, for example, the light emitting unit 11 is continuous. It is preferable that the light emitting unit 11 is easily joined by the fixing portion 6 such as when coupled in a flat shape. However, depending on the shape of the light emitting device 12 finally assembled, there may be a case where a terminal pair is preferably formed at a location other than the outer periphery of the substrate 1 of the light emitting unit 11, for example, near the center. The location can be arbitrarily selected according to the shape of the light-emitting device 12 finally assembled.

  In the light emitting unit 11 according to the first embodiment, a plurality of light emitting units 11 are driven simultaneously using a commercial AC power source directly without converting an AC voltage into a DC voltage (without requiring an AC-DC converter). can do. The rectifying unit 2 is further provided for rectifying an AC voltage from the outside and obtaining a pulsating voltage disposed on the substrate 1, and the light emitting elements LE1 to LE40 are pulsating voltage obtained by the rectifying unit 2. Light emission is possible. By having the rectifying unit 2, the power supply efficiency can be improved. Needless to say, the light emitting unit can be driven by the DC voltage after the AC voltage is converted to the DC voltage.

  In the light emitting unit 11 according to the first embodiment, as shown in FIG. 1A, the first line L1 is connected to the positive electrode of the light emitting element LE1 at one end of the light emitting element group 4 including the light emitting elements LE1 to LE40 connected in series. And the third line L3 is connected to the negative electrode of the light emitting element LE40 at the other end of the light emitting element group 4. A constant current driving unit (constant current circuit) 3 is interposed in the third line L3. The second line L2 branches from the first line L1 at the first connecting portion 13. Similarly, the fourth line L4 branches off from the third line L3 at the second connection portion 14. Accordingly, the substrate 1 has a first terminal T1 provided at the end of the first line L1 connected to the rectifying unit 2 and a second terminal provided at the end of the second line L2 branched from the first line L1. 1 terminal T3, 2nd terminal T2 provided in the edge part of the 3rd line L3 connected to the rectification | straightening part 2, and 2nd terminal provided in the edge part of the 4th line L4 branched from the 3rd line L3. The first terminal T1 and the second terminal T2 form a pair of terminal pairs, and the first terminal T3 and the second terminal T4 form another pair of terminals. .

  When a DC power supply is used, the first terminal T3 of one light emitting unit 11 is electrically connected to the first terminal T1 of another light emitting unit 11, and the second terminal T4 of one light emitting unit 11 is connected to another It is important to electrically connect to the second terminal T2 of the light emitting unit 11. This is because a forward current flows through each light emitting element group 4.

  On the other hand, when an AC power source is used, if the rectifying unit 2 is provided, a forward current to the light emitting element group 4 by the rectifying unit 2 regardless of how the terminals T1 to T4 are connected between the light emitting units. Can flow. Therefore, in this case, for example, the first terminal T3 of one light emitting unit 11 is electrically connected to the second terminal T4 of another light emitting unit 11 in addition to the connection form described in the case of using a DC power supply. The second terminal T4 of one light emitting unit 11 can be electrically connected to the first terminal T3 of another light emitting unit 11.

  For this reason, even if it is a case where DC power supply is used, or it is a case where AC power supply is used, the some light emission unit 11 can be electrically connected, respectively. By connecting a plurality of light emitting units 11 continuously, it is preferable that each light emitting unit 11 can be driven by one AC or DC power source. In particular, when an AC power supply is used, each light emitting unit 11 can arbitrarily select the connection method as described above. Therefore, when the light emitting unit 12 is manufactured by connecting the light emitting units 11, the light emitting unit 11 is used. Therefore, it is not necessary to confirm the connection direction of 11, and the width of the design can be expanded. In this case, it is preferable that the light emitting unit has the same terminal arrangement before and after the rotation when the light emitting unit is rotated 180 degrees when viewed from the front surface (light emitting surface) side (the terminal arrangement is point-symmetric). . Furthermore, it is preferable that the arrangement of the light emitting elements is the same before and after the rotation (the arrangement of the light emitting elements is point-symmetric). Thereby, the range of design can be further expanded.

  The upper case 5-1 has four locking portions 8 for fixing to the lower case 5-2, and the lower case 5-2 receives four locking portions for receiving the locking portions 8. Part 9. If the latching portion 8 is engaged with the notch 10 provided in the substrate 1 and further inserted into the latching portion receiving portion 9, the upper case 5-1 and the lower side are fixed while the substrate 1 is fixed to the case 5. Case 5-2 can be combined. Therefore, with the above configuration, the light emitting unit 11 can be assembled without using a fixture such as a screw. Further, the fixing portion 6 can be detachable without using the first terminals T1, T3 and the second terminals T2, T4 and solder. Thereby, for example, even after the light emitting units are once connected to each other by a fixing portion so as to become a light emitting device having an arbitrary shape, a light emitting device of another shape can be obtained by replacing it with a fixing portion of another shape. Can be reconfigured.

(Rectifier)
In the light emitting unit 11 according to the first embodiment, the light emitting unit 11 requires a rectifying unit (rectifying circuit) 2. Specifically, as the rectifying unit 2, as shown in FIG. 1B, for example, a bridge diode including four diodes can be used. The bridge diode has an input terminal of the diode D1 and an input terminal of the diode D2, an output terminal of the diode D2 and an input terminal of the diode D3, an output terminal of the diode D3 and an output terminal of the diode D4, and an input of the diode D4. It is formed by connecting the terminal and the output terminal of the diode D1. The connection E1 is formed by connecting the input terminal of the diode D1 and the input terminal of the diode D2, and the connection E2 is formed by connecting the output terminal of the diode D2 and the input terminal of the diode D3. Further, the connection E3 is formed by connecting the output terminal of the diode D3 and the output terminal of the diode D4, and the connection E4 is formed by connecting the input terminal of the diode D4 and the output terminal of the diode D1. ing. The first terminals T1 and T3 are connected to the connection part E4, and the second terminals T2 and T4 are connected to the connection part E2. Furthermore, the positive electrode of the light emitting element LE1 is connected to the connection part E3, and the negative electrode of the light emitting element LE40 is connected to the connection part E1 via the constant current driving part 3. With such a bridge diode, an AC voltage can be converted into a pulsating voltage (full-wave rectification can be performed), and the light emitting elements LE1 to LE40 can emit light by the pulsating voltage. In the first embodiment, a bridge diode is used as the rectifying unit 2, but the rectifying unit 2 of the light emitting unit 11 according to the present invention is not limited to this, and any circuit can be used as long as it has a rectifying function. It may be used.

(Constant current drive unit)
In the light emitting unit 11 according to the first embodiment, the light emitting unit 11 preferably has the constant current driving unit 3. Specifically, as shown in FIG. 1A, the constant current driving unit 3 includes two NPN bipolar transistors Q1 and Q2, five resistors R2, R3, R4, R5, and R6, and one The thermistor TH1 is used. The negative electrode of the light emitting element LE40 is connected to the collector of the NPN-type bipolar transistor Q2, and the positive electrode of the rectifying unit 2 is connected to the base of the NPN-type bipolar transistor Q2 via the resistor R2. The emitter of the NPN bipolar transistor Q2 is connected to the ground via resistors R5 and R6 and the thermistor TH1. The collector of the NPN bipolar transistor Q1 is connected to the positive electrode of the rectifying unit 2 via the resistor R2, and the base of the NPN bipolar transistor Q1 is connected to the emitter of the NPN bipolar transistor Q2 via the resistor R4. Has been. The emitter of the NPN bipolar transistor Q1 is connected to the ground.

  According to the light emitting unit 11 according to the first embodiment, the shape of the light emitting unit 11 is set to a desired shape, and the shape of the fixing portion 6 that connects the light emitting units 11 to each other is arbitrarily selected as will be described later. The light emitting device 12 having the shape can be easily manufactured. In addition, when a light-emitting device is manufactured by combining a plurality of light-emitting units, all the light-emitting units can emit light with a single power source, so that wiring work for the power source can be reduced.

(Embodiment 2)
A light-emitting device 12 according to Embodiment 2 of the present invention is a light-emitting device formed by connecting the plurality of light-emitting units 11 described above, and includes a first terminal T1, a second terminal T2, a first terminal T3, and a second terminal. The board 1 having two pairs of terminals consisting of the terminals T4, the first connection part 13 arranged on the board 1 and connected to the two first terminals T1 and T3, and the two second terminals T2 and T4 are connected. A plurality of light emitting units 11 each including 40 light emitting element groups 4 connected in series with the second connection portion 14 formed, and mechanically holding the light emitting units 11 connected to the terminal pair. A conductive fixing portion 6 that is electrically connected to the light emitting element group 4 and is capable of emitting light from the light emitting element group 4, and is shaped by connecting the light emitting units 11 to each other by the fixing portion 6. It is characterized by that.

  In the present invention, “modeling” means that a plurality of light emission units are selected by arbitrarily selecting the shape of the fixed part, setting the shape of the light emitting unit to a desired shape, and appropriately selecting the installation position of the terminal pair. It means that a light emitting device having a desired shape is formed from the unit.

  Further, in the present invention, “mechanically holdable” means, for example, that the light emitting unit is firmly held so that the light emitting units do not move by inserting the fixing portion into the adjacent light emitting units. It means that you can.

  Further, in the present invention, “being connected to the light emitting element and allowing the light emitting element to emit light” means that the light emitting units are electrically connected in a loop shape by inserting the fixing portion into the terminal pair, and light emission It means that one or more light-emitting elements provided in the unit are directly or indirectly connected to a power source, and the light-emitting element can emit light when the power is turned on. Here, “the light emitting units are electrically connected in a loop” means that when a DC power source is used, the first terminals of the light emitting units are connected to each other and the second terminals of the light emitting units are connected. By connecting each other, it means that a plurality of light emitting units are electrically connected in a ring shape. For example, in the case of a light emitting device including (n + 1) light emitting units according to Embodiment 1, the first terminal T3 of the first light emitting unit is connected to the first terminal T1 of the second light emitting unit, and The first terminal T3 is connected to the first terminal T1 of the third light emitting unit, the first terminal T3 of the nth light emitting unit is connected to the first terminal T1 of the (n + 1) th light emitting unit, and the (n + 1) th The second terminal T2 of the light emitting unit is connected to the second terminal T4 of the nth light emitting unit, ... the second terminal T2 of the third light emitting unit is connected to the second terminal T4 of the second light emitting unit, and the second light emitting The second terminal T2 of the unit can be connected to the second terminal T4 of the first light emitting unit. In this case, a power source is connected to the first terminal T1 and the second terminal T2 of the first light emitting unit. Further, the first terminal T3 and the second terminal T4 of the (n + 1) th light emitting unit are not used. In the case where an AC power supply is used and the light emitting unit includes a rectifying unit, “the light emitting units are electrically connected in a loop” means that the first terminal of one light emitting unit is the other The light emitting unit is connected to any one of the first terminal and the second terminal, and the second terminal of one light emitting unit is another one of the first terminal and the second terminal of the other light emitting unit. By connecting to one terminal, it means that a plurality of light emitting units are electrically connected in a ring shape. For example, in the case of a light-emitting device including (n + 1) light-emitting units according to Embodiment 1, in addition to the connection form described in the case where a DC power supply is used, the first terminal T3 of the first light-emitting unit is set to the second. The second terminal T4 of the light emitting unit is connected, the second terminal T2 of the second light emitting unit is connected to the first terminal T1 of the third light emitting unit, and the second terminal T2 of the nth light emitting unit is (n + 1) th. ) Connect to the first terminal T1 of the light-emitting unit, connect the second terminal T2 of the (n + 1) light-emitting unit to the first terminal T1 of the n-th light-emitting unit, ... the second terminal T2 of the third light-emitting unit. It can be connected to the first terminal T1 of the second light emitting unit, and the first terminal T3 of the second light emitting unit can be connected to the second terminal T4 of the first light emitting unit.

  The fixing part 6 used in the light emitting device 12 according to the second embodiment is shown in FIGS. As shown in FIGS. 4A to 4E, the fixing portion 6 may be linear (FIG. 4A) or “L” -shaped (FIG. 4B). )). Further, the fixing portion 6 may have a “U” shape with a hook (FIG. 4C), may have a “U” shape (FIG. 4D), It may be a half of the “U” shape with a hook (FIG. 4E).

  As shown in FIG. 4 (a), when the fixing portion 6 is linear, a pair of terminal pairs provided in parallel to the opposing two sides of the square light emitting unit 11 and substantially perpendicular to the sides are provided. By inserting the fixing portion 6, the light emitting units 11 can be arranged in a straight line. Moreover, if the fixing | fixed part 6 is slightly curved from a linear state, the light emission unit 11 can be arranged in circular shape. The size of the circle composed of the light emitting units 11 can be adjusted according to the degree of curvature of the fixed portion 6. For example, a large circle can be formed by reducing the degree of curvature, and a small circle can be formed by increasing the degree of curvature. In this case, the light emitting surface of each light emitting unit may be on the outside, on the inside, or may be configured such that the outside and the inside are alternated.

  As shown in FIG. 4B, when the fixing portion 6 has an “L” shape, a pair of terminals provided in parallel to two opposite sides of the square light emitting unit 11 and substantially perpendicular to the sides. By inserting the pair of fixing portions 6 into the light emitting units, the light emitting units can be configured to be vertical. For example, one lamp can be configured by using two sets of light-emitting devices in which three light-emitting units are connected using the “L” -shaped fixing part 6 and combining them so as to form a hexahedron. In this case, the two terminals of the light emitting unit located at one end of one light emitting device are electrically connected to the two terminals of the light emitting unit located at one end of the other light emitting device, respectively, using a wire or the like. . By connecting an AC power source to one of the other two terminals of the light emitting unit located at the other end of one light emitting device and grounding the other terminal, the entire lamp can be driven by one AC power source. it can.

  As shown in FIG. 4C, when the fixing portion 6 has a hooked “U” shape, the two hook portions 6-1 of the fixing portion 6 are inserted into the terminal pair of the square light emitting unit 11, for example. The light emitting unit 11 can be fixed to the base material (not shown) by fixing the hole 6-2 at the center lower portion of the fixing part 6 with a screw (not shown).

  As shown in FIG. 4D, if the fixing portion 6 has a “U” shape, the light emitting unit 11 is connected to the pair of ends of the fixing portion 6 as shown in FIG. 11 can be arranged facing each other. In addition, two surfaces in which the plurality of light emitting units 11 are formed in a planar shape by the linear fixing portion 6 can be connected to each other by the “U” -shaped fixing portion 6. The light emitting surfaces may face each other outward or may face each other inward. Moreover, one side may face outward and the other may face inward.

  As shown in FIG. 4 (e), when the fixing portion 6 is a half of the “U” shape with a hook, the fixing portion 6 is inserted into, for example, a square light emitting unit 11 and the lower portion of the fixing portion 6 is inserted. The light emitting unit 11 can be fixed to the base material (not shown) by fixing the concave portion 6-3 to the base material (not shown) with a screw (not shown).

  The fixing portion 6 according to the present invention may be made of any material as long as it has conductivity and can firmly fix the light emitting units 11 to each other mechanically. Examples of such a material include a metal material and an alloy material, and a ceramic material or a plastic material may be used as long as it has conductivity.

  According to the light emitting device according to Embodiment 2 of the present invention, it is possible to easily obtain a desired shape by setting the shape of the light emitting unit to a desired shape and arbitrarily selecting the shape of the fixing portion that connects the light emitting units to each other. can do. In addition, since all the light emitting units can emit light with a single power source, wiring work for the power source can be reduced.

  The light emitting device manufacturing method according to the present invention includes various light emitting device manufacturing methods such as illumination light sources, various indicator light sources, in-vehicle light sources, display light sources, liquid crystal backlight light sources, sensor light sources, and traffic lights. Can be used.

DESCRIPTION OF SYMBOLS 1 ... Board | substrate 2 ... Rectification part 3 ... Constant current drive part 4 ... Light emitting element group LE1-40 ... Light emitting element 5 ... Case 5-1 ... Upper case 5-2 ... Lower case 6 ... Fixing part 6-1 ... Hang part 6-2 ... Hole part 6-3 ... Recessed part 8 ... Locking part 9 ... Locking part receiving Part 10 ... Notch part 11 ... Light emitting unit 12 ... Light emitting device 13 ... First connecting part 14 ... Second connecting part 20 ... Lamp L1 ... First line L2 ... Second line L3, third line L4, fourth line T1, T3, first terminal T2, T4, second terminal

Claims (6)

A light-emitting device formed by connecting a plurality of light-emitting units,
A substrate having a plurality of terminal pairs each composed of a first terminal and a second terminal, and a first connection portion disposed on the substrate and connected to the first terminal, and the second terminal connected to the second terminal. A plurality of light-emitting units each including one or two or more light-emitting elements connected between two connection parts;
A conductive fixing part that is connected to the terminal pair and can mechanically hold the light emitting units and is electrically connected to the light emitting element to enable the light emitting element to emit light;
A light-emitting device shaped by connecting the light-emitting units to each other by the fixing portion.   The light emitting unit further includes a rectifying unit disposed on the substrate for rectifying an AC voltage from the outside to obtain a pulsating voltage, and the light emitting element can emit light by the pulsating voltage obtained by the rectifying unit. The light-emitting device according to claim 1.   The light emitting device according to claim 1, wherein the substrate has a constant current driving unit for driving the light emitting element with a constant current. A substrate having a plurality of terminal pairs each consisting of a first terminal and a second terminal;
1 or 2 or more light emitting elements which are arrange | positioned on the said board | substrate and were connected between the 1st connection part to which the said 1st terminal was connected, and the 2nd connection part to which the said 2nd terminal was connected. Light emitting unit.   A rectifying unit arranged on the substrate for rectifying an AC voltage from the outside to obtain a pulsating voltage, and the light emitting element can emit light with the pulsating voltage obtained by the rectifying unit. 4. The light emitting unit according to 4.   The light emitting unit according to claim 4, wherein the substrate has a constant current driving unit for driving the light emitting element at a constant current.

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