JP2014225520A - Light-emitting module and light device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve efficient dynamic operating inspection.SOLUTION: A light-emitting module according to an embodiment comprises a first light-emitting element group, a second light-emitting element group, a connection part, first feed terminals and a second feed terminal. The first light-emitting element group is provided on the substrate and radiates light of a first wavelength. The second light-emitting element group is provided on the substrate and radiates light of a second wavelength different from the first wavelength. The connection part series connects the first light-emitting element group and the second light-emitting element group. The first feed terminals are terminals for power supply and provided on both ends of the first light-emitting element group and the second light-emitting element group which are connected by the connection part. The second feed terminal is a terminal for power supply and provided on the connection part.

Description

  Embodiments described herein relate generally to a light emitting module and a lighting device.

  In recent years, lighting devices using LEDs (Light Emitting Diodes) as light sources are becoming popular. For example, there is known an illuminating device on which a plurality of types of LEDs having different emission colors are mounted. In such an illuminating device, the light of the color which the light emission color in each LED mixed is irradiated.

  In the manufacturing process of such an illuminating device, a manufacturer may inspect whether or not each LED is normally lit. For example, in the manufacturing process of a lighting device in which a plurality of types of LEDs are mounted as in the above example, the manufacturer causes the plurality of types of LEDs to emit light at the same time, and checks whether each LED is normally lit. . However, such lighting inspection is not efficient because the manufacturer simultaneously inspects LEDs having different emission colors.

JP 2004-80046 A

  The problem to be solved by the present invention is to provide a light emitting module and a lighting device capable of realizing an efficient lighting inspection.

  The light emitting module according to the embodiment includes a substrate, a first light emitting element group, a second light emitting element group, a connection portion, a first power supply terminal, and a second power supply terminal. The first light emitting element group is provided on the substrate and irradiates light having a first wavelength. The second light emitting element group is provided on the substrate and irradiates light having a second wavelength different from the first wavelength. The connecting portion connects the first light emitting element group and the second light emitting element group in series. The first power supply terminal is a power supply terminal provided at both ends of the first light emitting element group and the second light emitting element group connected by the connecting portion. A 2nd electric power feeding terminal is a terminal for the electric power supply provided in the said connection part.

  According to the light emitting module according to the embodiment, there is an effect that an efficient lighting inspection can be realized.

FIG. 1 is a longitudinal sectional view showing a lighting device equipped with a light emitting module according to an embodiment. FIG. 2 is a top view illustrating the light emitting module according to the embodiment. FIG. 3 is an explanatory diagram for explaining an arrangement example of LEDs according to the embodiment.

  The light emitting module 10 according to the embodiment described below includes a substrate 110, a first light emitting element group (for example, a blue LED 121), a second light emitting element group (for example, a red LED 122), and a connecting portion (for example, The wiring pattern 153 and the wiring 180), a first power supply terminal (for example, the power supply terminal 181 and the power supply terminal 182), and a second power supply terminal (for example, the power supply terminal 183) are provided. The first light emitting element group is provided on the substrate 110 and irradiates light having a first wavelength. The second light emitting element group is provided on the substrate 110 and irradiates light having a second wavelength different from the first wavelength. The connecting portion connects the first light emitting element group and the second light emitting element group in series. The first power supply terminal is a power supply terminal provided at both ends of the first light emitting element group and the second light emitting element group connected by the connecting portion. The second power supply terminal is a power supply terminal provided in the connection portion.

  In addition, the light emitting module 10 according to the embodiment described below includes a first wiring pattern (for example, the wiring pattern 151), a second wiring pattern (for example, the wiring pattern 152), and a third wiring pattern (for example, the wiring pattern 151). Wiring pattern 153). The first wiring pattern is provided on the substrate 110. Further, the second wiring pattern is provided at a position separated from the first wiring pattern by a predetermined distance. The third wiring pattern is provided at a position sandwiching the second wiring pattern with the first wiring pattern. One end of the first light emitting element group connected in series is connected to the first wiring pattern, and the other end of the first light emitting element group is connected to the third wiring pattern. One end of the second light emitting element group connected in series is connected to the second wiring pattern, and the other end of the second light emitting element group is connected to the third wiring pattern. The first power supply terminal is provided in the first wiring pattern and the second wiring pattern. The second power supply terminal is provided in the third wiring pattern.

  Moreover, the illuminating device 1 which concerns on embodiment described below comprises either of the light emitting modules 10 mentioned above.

  Hereinafter, a light emitting module and an illumination device according to an embodiment will be described with reference to the drawings. In the embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted. The number of LEDs shown in each figure is not limited to the illustrated example.

[Vertical section of lighting device]
FIG. 1 is a longitudinal sectional view showing a lighting device equipped with a light emitting module according to an embodiment. As shown in FIG. 1, the lighting device 1 according to the embodiment includes a light emitting module 10, a main body 11, a base member 12, an eyelet part 13, a cover 14, a control part 15, and electrical wirings 16 a and 16 b. Have

  The light emitting module 10 is disposed on the upper surface 11 a of the main body 11. The light emitting module 10 has a substrate 110. The substrate 110 is formed of a ceramic having a low thermal conductivity, such as alumina, silicon nitride, silicon oxide, or aluminum.

  Further, the blue LED 121 and the red LED 122 are arranged on the arrangement surface 110 a of the substrate 110. The blue LED 121 is a light emitting element that emits blue light having a wavelength peak of 450 [nm], for example. The red LED 122 is a light emitting element that emits red light having a wavelength peak of 635 [nm (nanometre)], for example.

  An annular dam member 130 is arranged on the arrangement surface 110 a of the substrate 110 so as to surround the blue LED 121 and the red LED 122. A sealing portion 140 is provided in a recess formed by the inner surface of the damming member 130 and the arrangement surface 110 a of the substrate 110. The sealing part 140 is formed by pouring various resins into the concave part and curing. For example, the sealing portion 140 is formed of various resins such as an epoxy resin, a urea resin, a silicone resin, and a highly diffusible transparent resin that does not include a phosphor. In this way, the blue LED 121 and the red LED 122 are entirely covered from the top by the same sealing portion 140.

  The main body 11 is formed of a metal having high thermal conductivity, for example, aluminum. The main body 11 is formed in a cylindrical shape having a substantially circular cross section. A base member 12 is attached to one end of the main body 11, and a cover 14 is attached to the other end of the main body 11. Moreover, the main body 11 is formed so that an outer peripheral surface may form a substantially conical tapered surface whose diameter increases in the direction from one end to the other end. The main body 11 is formed in a shape that approximates the silhouette of the neck portion of the mini-krypton bulb. In addition, a large number of unillustrated radiating fins that project radially from one end to the other end are integrally formed on the outer peripheral surface of the main body 11.

  The base member 12 is, for example, an Edison type E-shaped base. The base member 12 has a cylindrical shell made of a copper plate provided with a thread. In addition, the base member 12 has a conductive eyelet portion 13 provided on the top of the lower end of the shell via an electrical insulating portion. The opening of the shell is electrically insulated and fixed from the opening at one end of the main body 11. The shell and eyelet unit 13 is connected to an input line derived from a power input terminal of a circuit board (not shown) in the control unit 15. Such a cap member 12 supplies power supplied from a commercial power source to the control unit 15 by being inserted into, for example, a socket provided on a ceiling or the like.

  The cover 14 is made of milky white polycarbonate, for example. Moreover, the cover 14 is formed in the smooth curved surface shape approximated to the silhouette of the mini krypton light bulb which has an opening at one end. Further, the cover 14 is fixed by fitting the opening end portion into the main body 11 so as to cover the light emitting surface of the light emitting module 10. Note that the method of fixing the cover 14 to the main body 11 may be any method such as adhesion, fitting, screwing, and locking.

  The control unit 15 includes a control circuit that controls lighting of the blue LED 121 and the red LED 122 mounted on the substrate 110. Such a control circuit is accommodated in the control unit 15 so as to be electrically insulated from the outside. Further, the control unit 15 converts the AC voltage into a DC voltage under the control of the control circuit, and applies the changed DC voltage to the blue LED 121 and the red LED 122. Further, the control unit 15 is connected to the output terminals of the control circuit with electrical wirings 16 a and 16 b for supplying power to the blue LED 121 and the red LED 122.

  The electrical wires 16a and 16b are led out to an opening at the other end of the main body 11 through a through hole (not shown) formed in the main body 11 and a guide groove (not shown). The tip portions of the electrical wirings 16 a and 16 b are connected to a connector 160 (described later) disposed on the substrate 110 after the insulating coating is peeled off.

  In this way, the control unit 15 supplies the power input via the shell and the eyelet unit 13 to the blue LED 121 and the red LED 122 via the electrical wirings 16a and 16b. And the control part 15 collect | recovers the electric power supplied to blue LED121 and red LED122 via the electrical wiring 16a and 16b.

[Example of top surface of light emitting module]
FIG. 2 is a top view showing the light emitting module 10 according to the embodiment. FIG. 2 shows an example of the light emitting module 10 viewed from the direction of arrow A in FIG. In FIG. 2, the damming member 130 and the sealing portion 140 shown in FIG. 1 are not shown.

  As shown in FIG. 2, the plurality of blue LEDs 121 and the red LEDs 122 are arranged on the arrangement surface 110 a of the substrate 110. In FIG. 2, one of the plurality of blue LEDs 121 is given a reference numeral “121”, but a similar rectangular portion corresponds to the blue LED 121. In FIG. 2, one red LED among the plurality of red LEDs 122 is given a reference sign “122”, but a similar square portion corresponds to the red LED 122.

  In addition, wiring patterns 151, 152, and 153 are formed on the placement surface 110 a of the substrate 110. The wiring patterns 151, 152 and 153 are electric conductors printed on the substrate 110. A connector 160 is installed on one end side 151 a of the wiring pattern 151 and one end side 152 a of the wiring pattern 152. Further, as shown in FIG. 2, the other end side 151b of the wiring pattern 151 is formed in a linear shape. Further, the other end side 152b of the wiring pattern 152 is formed in a straight line at a position away from the other end side 151b of the wiring pattern 151 by a predetermined distance. In the example shown in FIG. 2, the other end side 151b of the wiring pattern 151 and the other end side 152b of the wiring pattern 152 are formed substantially in parallel. In addition, one end side 153 a of the wiring pattern 153 is formed linearly at a position sandwiching the other end side 152 b of the wiring pattern 152 between the other end side 151 b of the wiring pattern 151.

  The plurality of blue LEDs 121 are connected in series by a bonding wire 171. FIG. 2 shows an example in which five series circuits that connect twelve blue LEDs 121 in series are arranged. In FIG. 2, reference numeral “171” is attached to one bond wire 171. However, a straight line connecting the blue LEDs 121 and a straight line extending from the blue LED 121 correspond to the bond wire 171.

  The anode (anode) side in the series circuit of the blue LEDs 121 is connected to the other end side 151 b of the wiring pattern 151. The cathode (cathode) side in the series circuit of the blue LEDs 121 is connected to one end side 153 a of the wiring pattern 153.

  The plurality of red LEDs 122 are connected in series by a bonding wire 172. FIG. 2 shows an example in which six series circuits that connect twelve red LEDs 122 in series are arranged. In FIG. 2, reference numeral “172” is attached to one bond wire 172, but a straight line connecting the red LEDs 122 and a straight line extending from the red LED 122 correspond to the bond wire 172.

  The anode (anode) side in the series circuit of the red LEDs 122 is connected to one end side 153 a of the wiring pattern 153. Further, the cathode (cathode) side in the series circuit of the red LEDs 122 is connected to the other end side 152 b of the wiring pattern 152.

  The connector 160 described above is installed so as to be electrically connected to the wiring patterns 151 and 152. The connector 160 is connected to the electrical wirings 16a and 16b shown in FIG. As a result, the connector 160 supplies the power supplied from the electrical wirings 16 a and 16 b to the wiring pattern 151 and the wiring pattern 152.

  That is, in the example of FIG. 2, the current reaches the wiring pattern 153 from the other end side 151 b of the wiring pattern 151 through the bonding wire 171 through the series circuit of the blue LEDs 121. Then, the current is folded at the wiring pattern 153, flows through the series circuit of the red LEDs 122 via the bonding wire 172, and reaches the other end side 152 b of the wiring pattern 152. Thereby, the plurality of blue LEDs 121 and the plurality of red LEDs 122 shown in FIG. 2 can emit light.

  Here, as shown in FIG. 2, in the light emitting module 10 according to the embodiment, the other end side 151 b of the wiring pattern 151 is provided with a power supply terminal 181 that is a terminal that enables power supply. In addition, a power supply terminal 182 that enables power supply is provided on the other end side 152 b of the wiring pattern 152. In addition, a power supply terminal 183 that enables power supply is provided on the other end 153 b of the wiring pattern 153.

  This point will be described with reference to the circuit diagram shown in FIG. FIG. 3 is an explanatory diagram illustrating an arrangement example of the blue LEDs 121 and the red LEDs 122 according to the embodiment. In addition, in FIG. 3, the circuit diagram of blue LED121 and red LED122 is shown typically, and fewer LEDs are shown than FIG.

  In the example illustrated in FIG. 3, the blue LED group 120 b includes blue LED groups 121 a to 121 c in which two blue LEDs 121 are connected in series, and the blue LED groups 121 a to 121 c are formed in parallel. The The red LED group 120r includes red LED groups 122a to 122d in which three red LEDs 122 are connected in series, and the red LED groups 122a to 122d are formed in parallel.

  Moreover, the wiring 180 plays a role as a connection part that connects the blue LED group 120b and the red LED group 120r in series. Note that, in the light emitting module 10 according to the embodiment, one end side 153a of the wiring pattern 153 is actually installed at the position of the wiring 180 illustrated in FIG. That is, in the light emitting module 10 according to the embodiment, the one end side 153a of the wiring pattern 153 serves as a connection portion.

  Further, one end P10 of the circuit shown in FIG. 3 corresponds to an anode (anode) and is connected to the other end side 151b of the wiring pattern 151. Further, the other end P <b> 20 of the circuit shown in FIG. 3 corresponds to a cathode (cathode) and is connected to one end side 153 a of the wiring pattern 153. That is, the light emitting module 10 according to the embodiment is represented by a circuit folded by a fold line L10 illustrated in FIG. As described above, according to the light emitting module 10 according to the embodiment, the wiring pattern 151 to which the anode (anode) side of the LED is connected and the wiring pattern 152 to which the cathode (cathode) side of the LED is connected are arranged in the vicinity. Therefore, the overall wiring pattern can be simplified. Specifically, in the light emitting module 10 according to the embodiment, it is only necessary to provide the wiring patterns 151, 152, and 153, and other wiring patterns that connect the LEDs are not required. For this reason, according to the light emitting module 10 which concerns on embodiment, size reduction of a circuit scale is realizable.

  In the light emitting module 10 according to the embodiment, as illustrated in FIG. 3, the power supply terminal 181 is provided on the one end P10 side, the power supply terminal 182 is provided on the other end P20 side, and the power supply terminal 183 is further provided on the wiring 180. Provided. That is, in the light emitting module 10 according to the embodiment, the power supply terminals 181 and 182 are provided at both ends of a circuit in which the blue LED group 120b and the red LED group 120r are connected in series, and the blue LED group 120b and the red LED group 120r are provided. The power supply terminal 183 is provided in the wiring 180 (that is, the connection portion) that connects the two in series.

  Thereby, the manufacturer of the light emitting module 10 according to the embodiment can inspect whether the LED is normally lit for each LED of the same type. As a result, the light emitting module 10 according to the embodiment can realize an efficient lighting inspection by the manufacturer.

  More specifically, when the manufacturer manufactures the light emitting module 10 illustrated in FIG. 2, the power supply terminal 181 and the power supply terminal 183 are tested for power supply while the power supply via the connector 160 is cut off. A power feeding device can be connected. In this case, a current flows through the series circuit of the blue LEDs 121 connected to the other end side 151b of the wiring pattern 151 and the one end side 153a of the wiring pattern 153. That is, the manufacturer can connect the power supply device to the power supply terminal 181 and the power supply terminal 183, and can cause the current to flow in the series circuit of the blue LEDs 121 without flowing the current in the series circuit of the red LEDs 122. Only can be lit. Thereby, the manufacturer can perform the lighting test of only the blue LED 121.

  Further, the manufacturer can connect a test power supply apparatus to the power supply terminal 182 and the power supply terminal 183 in a state where the power supply via the connector 160 is cut off. In this case, a current flows through the series circuit of the red LEDs 122 connected to the other end side 152b of the wiring pattern 152 and the one end side 153a of the wiring pattern 153. That is, by connecting a power feeding device to the power feeding terminal 182 and the power feeding terminal 183, the manufacturer can flow current to the series circuit of the red LED 122 without flowing current to the series circuit of the blue LED 121. Only can be lit. Thereby, the manufacturer can perform the lighting inspection of only the red LED 122.

  Further, the manufacturer is not limited to the above example, and the manufacturer can also turn on all the blue LEDs 121 and the red LEDs 122 by connecting a test power supply device to the power supply terminals 181 and 182.

  As described above, the light emitting module 10 according to the embodiment enables the lighting inspection for each LED of the same type and enables the lighting inspection in a state where all the LEDs are lighted at the same time. Can be realized. For example, when the power supply terminals 181, 182, and 183 do not exist, the manufacturer turns on all the blue LEDs 121 and the red LEDs 122 by supplying power through the connector 160. In this case, since it is necessary to inspect simultaneously whether or not the LEDs having different emission colors are normally lit, there is a possibility that the lighting inspection by the manufacturer may be complicated. On the other hand, when the light emitting module 10 according to the embodiment is used, the manufacturer individually performs a lighting test for only the blue LED 121, a lighting test for only the red LED 122, and a lighting test for simultaneously lighting the blue LED 121 and the red LED 122. be able to. As a result, the manufacturer can perform an efficient and high-quality lighting inspection.

[Other Embodiments]
In the said embodiment, the light emitting module 10 showed the example which has blue LED121 and red LED122. However, it is not restricted to this example, The light emitting module 10 may have LED which light-emits light of colors other than blue and red. For example, the light emitting module 10 may include an LED that emits white or green light.

  Moreover, in the said embodiment, although the illuminating device 1 showed the example which is a light bulb, the illuminating device 1 which has the light emitting module 10 mentioned above is not restricted to a light bulb. For example, the lighting device 1 can be applied to a downlight type lighting device or a projector.

  Moreover, the shape, the raw material, and the material of each member which concern on the said embodiment are not restricted to embodiment or what was illustrated. For example, the blue LED 121 and the red LED 122 may be arranged in a circular area instead of a rectangular area. The cover 14 may be a rectangle or an ellipse instead of a circle.

  As described above, according to the embodiment, an efficient lighting inspection can be realized.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Illuminating device 10 Light emitting module 110 Board | substrate 121 Blue LED
122 Red LED
151, 152, 153 Wiring pattern 181, 182, 183 Feed terminal

Claims (3)

A substrate;
A first light emitting element group provided on the substrate and irradiating light of a first wavelength;
A second light emitting element group provided on the substrate and irradiating light having a second wavelength different from the first wavelength;
A connecting portion for connecting the first light emitting element group and the second light emitting element group in series;
A first power supply terminal for power supply provided at both ends of the first light emitting element group and the second light emitting element group connected by the connecting portion;
A second power supply terminal for power supply provided in the connecting portion;
A light emitting module comprising: A first wiring pattern provided on the substrate;
A second wiring pattern provided at a position separated from the first wiring pattern by a predetermined distance;
A third wiring pattern provided at a position sandwiching the second wiring pattern with the first wiring pattern;
Further comprising
One end of the first light emitting element group connected in series is connected to the first wiring pattern, the other end of the first light emitting element group is connected to the third wiring pattern,
One end of the second light emitting element group connected in series is connected to the second wiring pattern, and the other end of the second light emitting element group is connected to the third wiring pattern,
The first power supply terminal is provided in the first wiring pattern and the second wiring pattern,
The second power supply terminal is provided in the third wiring pattern.
The light-emitting module according to claim 1. The light emitting module according to claim 1;
An illumination device comprising:

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