JP4623730B2 - Light emitting diode light source using light emitting diode light source unit - Google Patents

Description

  The present invention relates to a light emitting diode light source used as various illumination light sources, and more particularly to a light emitting diode light source unit and a light emitting diode light source.

  A light-emitting diode (hereinafter abbreviated as LED) using a compound semiconductor has advantages such as a small amount of heat generation and a long life compared with a conventional illumination light source such as an incandescent light bulb. The application field as a light source is expanding. Since a single LED element has insufficient light quantity, it is necessary to form a light source in which a plurality of LED elements are assembled for practical use as a light source for general illumination, and various types of bulb-type LED light sources have been proposed. (For example, refer to Patent Document 1 and Patent Document 2.)

  However, in such a bulb-type LED light source, if the LED drive current is increased in order to obtain a light source that requires high brightness and high output, the power loss in the LED increases in proportion to this, and most of the energy Is converted into heat, and the temperature of the LED rises to a high temperature. As the temperature increases, the light emission efficiency (current-light conversion efficiency) decreases as the characteristics of the LED, so that the luminance decreases, and the LED operating life becomes shorter as the temperature increases. Therefore, how to efficiently dissipate heat from the LED element is a problem. In the conventional bulb-type LED light source, the LED element is directly mounted on a cylindrical or planar mounting board, and heat is radiated through the mounting board having low thermal conductivity, so that sufficient heat dissipation characteristics cannot be obtained. .

Therefore, the present applicant has devised and applied for an LED light source unit that serves as a basic element in configuring the LED light source as a means for improving the heat dissipation of such an LED light source (see Patent Document 3).
Japanese Patent Laying-Open No. 2004-39594 (FIG. 1, paragraph numbers 0010-0014) Japanese Patent Laying-Open No. 2004-296245 (FIG. 1, paragraph numbers 0014-0020) Japanese Patent Application No. 2005-117616 (unpublished)

  However, in such a conventional LED light source unit, when a plurality of LED light source units are arranged to form an LED light source, it is necessary to provide a space for wiring separately along the LED light source unit in order to connect terminal electrodes to each other. was there. In addition, when fixing the conventional LED light source unit to the support member, if the adhesive method is used, the heat conductivity of the adhesive is low, resulting in a problem of low heat dissipation. If the screw method is used, the screw is fixed. There was also a problem that a space was needed.

  The present invention has been made in order to solve such a conventional problem, and the object thereof is to easily construct various LED light sources, to allow simple wiring that does not take up space, and to be sufficient. It is providing the LED light source unit and LED light source which have the sufficient heat dissipation characteristic.

It consists of a substantially rectangular parallelepiped base made of a metal with high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. Has a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via a wiring pattern, and a light emitting diode light source in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin A plurality of light emitting diode light source units formed on the upper surface of the printed circuit board so as to sandwich a semi-cylindrical notch formed on both end surfaces of the light emitting diode light source unit in the longitudinal direction. and on the heat radiating plate made of a sheet of metal having high heat conductivity, and a line state by arranging so as to be adjacent to the long side direction, said light emitting diode light source units adjacent It had an electrode for connecting across the terminal electrodes of on the cutout portion and said.

  In addition, the heat sink is in the form of a panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat sink so that a plurality of sets are adjacent to each other in a direction perpendicular to the longitudinal direction. It is characterized by.

The printed circuit board comprises a substantially rectangular parallelepiped base made of a metal having high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. The substrate has a pair of terminal electrodes electrically connected to each electrode of the light-emitting diode element through a wiring pattern, and light emission in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin. A diode light source unit, wherein the terminal electrodes of the light emitting diode light source unit formed on the upper surface side of the printed circuit board so as to follow the 1/4 cylindrical cutouts formed at the four corners of the light emitting diode light source unit. a plurality, on the heat radiating plate made of a sheet of metal having high heat conductivity, and a line state by arranging so as to be adjacent to the long side direction, said light emitting diode light source units adjacent Covered with a connecting substrate having an electrode for connecting across the terminal electrodes of on the cutout portion, characterized in that screwed to the connection substrate to the radiating plate.

  In addition, the heat sink is in the form of a panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat sink so that a plurality of sets are adjacent to each other in a direction perpendicular to the longitudinal direction. It is characterized by.

The printed circuit board comprises a substantially rectangular parallelepiped base made of a metal having high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. The substrate has a pair of terminal electrodes electrically connected to each electrode of the light-emitting diode element through a wiring pattern, and light emission in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin. A diode light source unit having a through hole at both ends of the light emitting diode light source unit, and the pair of terminal electrodes provided so as to sandwich the through hole are provided on the upper surface of the printed circuit board at one end, with the other end portion is provided on the lower surface, a plurality of light emitting diode light source unit is not the base at the bottom of the other end, on a heat radiating plate made of a sheet of metal having high heat conductivity In the line state side by side in the longitudinal direction so that the electrode portion of the stomach overlap, characterized in that the light-emitting diode light source units screwed onto the heat radiation plate.

  In addition, a step portion is processed in the heat radiating plate so that the light emitting diode light source unit is in close contact with the heat radiating plate.

  In addition, the heat sink is in the form of a panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat sink so that a plurality of sets are adjacent to each other in a direction perpendicular to the longitudinal direction. It is characterized by.

The printed circuit board comprises a substantially rectangular parallelepiped base made of a metal having high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. The substrate has a pair of terminal electrodes electrically connected to each electrode of the light-emitting diode element through a wiring pattern, and the upper surface of the base except the terminal electrode portion is sealed with a translucent resin. The light-emitting diode light source unit has a through hole at both ends of the light-emitting diode light source unit, and the pair of terminal electrodes provided so as to sandwich the through-hole are both provided on the upper surface side of the printed circuit board. Both of the pair of terminal electrodes provided so as to sandwich the through hole are provided on the lower surface side of the printed circuit board, and the base is not provided at the lower part of the both end portions. A plurality of diode light source unit, and the line state alternately arranged in the longitudinal direction so that the electrode portions of the physician each other on the heat radiating plate made of a sheet of metal having high heat conductivity overlap, said light emitting diode light source unit It is characterized by being screwed on the heat sink.

  In addition, a step portion is processed in the heat radiating plate so that the light emitting diode light source unit is in close contact with the heat radiating plate.

  In addition, the heat sink is in the form of a panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat sink so that a plurality of sets are adjacent to each other in a direction perpendicular to the longitudinal direction. It is characterized by.

  In addition, a hole for screwing is provided in the reflection frame covering the portion other than the sealing resin portion of the light emitting diode light source unit, and the reflection frame, the connection substrate, and the light emitting diode light source unit are screwed together on the heat radiating plate. It is characterized by being stopped and in a line state.

  In addition, the heat sink is in the form of a panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat sink so that a plurality of sets are adjacent to each other in a direction perpendicular to the longitudinal direction. It is characterized by.

  As described above, according to the present invention, a substantially rectangular parallelepiped base made of a metal having high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and an upper surface of the base are arranged. And a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via the wiring pattern, and the upper surface of the base excluding the terminal electrode portion is translucent In the light-emitting diode light source unit sealed with resin, the pair of terminal electrodes are provided at both ends in the longitudinal direction of the printed circuit board, so that excellent heat dissipation is provided as a basic component in constituting various LED light sources. An LED light source unit can be provided. In addition, since a plurality of such LED light source units are fixed to one heat radiating plate, it is not necessary to provide a space for wiring along the LED light source unit in order to connect the terminal electrodes to each other. An LED light source such as a line type or a panel type can be easily configured.

  Hereinafter, an LED light source unit and an LED light source according to embodiments of the present invention will be described in detail with reference to the drawings. First, the LED light source unit will be described. FIG. 1 is a plan view of an LED light source unit according to a first embodiment of the present invention, FIG. 2 is a plan view of the LED light source unit showing the sealing resin removed from FIG. 1, and FIG. 3 is this LED light source unit FIG.

  1 to 3, reference numeral 1 denotes an LED light source unit as a basic component constituting the LED light source, and reference numeral 2 denotes a long base made of a copper alloy or the like having excellent thermal conductivity. Reference numeral 3 denotes a single printed circuit board of single-sided wiring made of glass epoxy or the like bonded on the base 2. The printed board 3 is formed with a through-hole 3a as a long-hole-shaped through-hole at the center, and wiring patterns 3b, 3c and 3d are formed along the through-hole 3a on the upper surface. A plurality of connection electrode portions are provided at equal intervals in each of the wiring patterns 3b, 3c, and 3d. A cathode terminal electrode 3e and an anode terminal electrode 3f are provided at both ends in the longitudinal direction of the printed circuit board 3, and are connected to the wiring patterns 3b and 3c, respectively. The printed circuit board 3 is not a single sheet, but is composed of two sheets: one printed circuit board including one wiring pattern 3b and 3d and another printed circuit board including the other wiring pattern 3c and 3d. Also good.

  Reference numeral 4 denotes an LED element as a light emitting element, and a plurality (18 in this case) are mounted on the upper surface of the base 2 exposed in the through-hole 3a with silver paste in a line at substantially equal intervals. . In addition, arbitrary plural LED elements 4 may be mounted in arbitrary plural rows. Reference numerals 5 and 6 denote wires as electrode connection members made of fine metal wires, which are connected from the electrodes of the LED elements 4 to the connection electrode portions of the wiring patterns 3b, 3c and 3d of the printed circuit board 3, respectively. In the LED light source unit 1, a plurality of sets (here, 6 sets) of three LED elements 4 connected in series are connected in parallel between the two cathode terminal electrodes 3e and the anode terminal electrode 3f. Reference numeral 7 denotes a sealing resin made of a translucent resin, which covers the printed circuit board 3 excluding the terminal electrodes 3e and 3f in a rectangular parallelepiped shape to protect the LED element 4 and the wires 5 and 6. Reference numeral 8 denotes a semi-cylindrical cutout formed on both end faces of the LED light source unit 1. The LED light source unit 1 can be applied by connecting a 12V DC power source (for example, an automotive power source) between two terminal electrodes.

  Next, the effect of the LED light source unit which is the 1st Embodiment of this invention is demonstrated. When the LED element 4 is driven by applying a drive voltage of 12 V to the cathode terminal electrode 3e and the anode terminal electrode 3f, each LED element 4 emits light, and the light passes through the sealing resin 7 and is emitted. Becomes heat and is emitted from the LED element 4. At this time, since the lower surface of the LED element 4 is in close contact with the base 2 having good thermal conductivity, heat is efficiently dissipated. Since the LED light source unit 1 has a pair of terminal electrodes at both ends, when connecting various LED light source units 1 to form various LED light sources, there is no need to separately route the wiring. Can be used effectively. In addition, since the unit can be fixed with a small number of screws to fix the unit to the support member made of a heat sink, no extra space is required for fixing.

  Next, an LED light source configured using the LED light source unit according to the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 4 is a partial plan view of a line type LED light source assembled using this LED light source unit. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIGS. 6A and 6B are a plan view and a rear view of a connecting substrate used in the line-type LED light source. FIG. 7 is a partial plan view showing a panel type LED light source assembled using this LED light source unit. 8A is a partial plan view of the connecting board used in FIG. 7, and FIG. 8B is a partial rear view thereof.

  In FIG. 4, reference numeral 10 denotes an LED light source configured by arranging LED light source units 1 in an arbitrary number of lines. Reference numeral 14 denotes one long heat sink made of a metal such as a copper alloy having high thermal conductivity. Reference numeral 15 denotes a connecting board whose details are shown in FIG. A through hole 15a is formed at the center of the connecting substrate 15, and a pair of electrodes 15b for connecting the adjacent terminal electrodes 3e and 3f to each other are formed on the back surface with the through hole 15a interposed therebetween. Reference numeral 16 denotes a fixing screw. As shown in FIG. 5, the connecting substrate 15 is placed on the abutting surface of the LED light source unit 1 and fixed to the heat radiating plate 14 with the screw 16.

  In FIG. 7, reference numeral 20 denotes a panel type LED light source in which LED light source units 1 are arranged in an arbitrary number of panels (vertically and horizontally). Reference numeral 24 denotes one panel-like heat sink. Reference numeral 25 denotes a connection board whose details are shown in FIG. 8, and the connection board 25 is formed by connecting the connection board 15 in a direction perpendicular to the longitudinal direction of the unit. A plurality of through holes 25a are formed at the center of the connecting substrate 25, and a pair of electrodes 25b for connecting the adjacent terminal electrodes 3e and 3f to each other are formed on the back surface with the through holes 25a interposed therebetween. Has been. As described above, the LED light sources 10 and 20 according to the embodiment of the present invention can be easily formed by combining a plurality of LED light source units 1 as an assembly unit. Moreover, since the LED light source unit 1 is fixed to the heat radiating plates 14 and 24 and constitutes an LED light source, the heat radiation characteristics are further improved. Moreover, since the LED light source unit 1 can be mass-produced as an assembly unit, it can contribute to the reduction of the manufacturing cost of the LED light sources 10 and 20.

  Next, a second embodiment of the present invention will be described. FIG. 9 is a plan view of an LED light source unit according to the second embodiment of the present invention, and FIG. 10 is a plan view of the LED light source unit showing the sealing resin removed from FIG.

  9 and 10, reference numeral 11 denotes an LED light source unit as a basic component constituting the LED light source, and reference numeral 12 denotes a long base made of a copper alloy having excellent thermal conductivity. Reference numeral 13 denotes one printed circuit board of single-sided wiring made of glass epoxy or the like bonded on the base 12. A through hole 13a as a long hole shaped through hole is formed at the center of the printed board 13, and wiring patterns 13b, 13c and 13d are formed along the through long hole 13a on the upper surface. A plurality of connection electrode portions are provided at equal intervals in each of the wiring patterns 13b, 13c and 13d. A cathode terminal electrode 13e and an anode terminal electrode 13f are provided at both ends of the printed board 13, and are connected to the wiring patterns 13b and 13c, respectively. Reference numeral 18 denotes a quarter cylindrical cutout formed at the four corners of the LED light source unit 11. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and names, and detailed description thereof is omitted.

  Next, the effect of the LED light source unit which is the 2nd Embodiment of this invention is demonstrated. Since the notches 18 are provided at the four corners of the LED light source unit 11, the sealing resin 7 can be extended to both ends of the unit, and the dark portion of the light emitting surface is not generated at both ends. Other effects are the same as in the case of the first embodiment.

  Next, the LED light source formed using the LED light source unit 11 which is the 2nd Embodiment of this invention is demonstrated in detail with reference to drawings. FIG. 11 is a partial plan view of a line type LED light source assembled using the LED light source unit 11. 12A is a partial plan view showing the connecting board used in FIG. 11 and FIG. 12B is a partial rear view thereof. FIG. 13 is a plan view showing a panel-type LED light source. 14A is a partial plan view of the connecting board used in FIG. 13 and FIG. 14B is a partial rear view thereof.

  In FIG. 11, reference numeral 30 denotes an LED light source in which LED light source units 11 are arranged in an arbitrary number of lines in the longitudinal direction. Reference numeral 34 denotes a single long heat sink made of a metal such as a copper alloy having high thermal conductivity, and 35 denotes a connecting board whose details are shown in FIG. A plurality of notches 35a are formed at a predetermined interval on the connecting substrate 35, and electrodes 35b for connecting adjacent terminal electrodes 13e or 13f to each other at positions corresponding to the notches 35a on the back surface. Is formed. Both sides of the LED light source unit 11 connected in the longitudinal direction are pressed by the connecting substrate 35 and fixed to the heat radiating plate 34 by screws 16. The screws 16 serve to fix the LED light source unit 11 and connect the terminal electrodes. Plays.

  In FIG. 13, reference numeral 40 denotes a panel type LED light source configured by arranging an arbitrary number of LED light source units 11 in a panel shape. Reference numeral 44 denotes a single panel-like heat sink made of a metal such as a copper alloy having high thermal conductivity. Reference numeral 45 denotes a connecting board whose details are shown in FIG. A plurality of through holes 45a are formed in the connection substrate 45 at predetermined intervals, and a pair of electrodes 45b for connecting the adjacent terminal electrodes 3e and 3f to each other sandwich the through holes 45a on the back surface. It is formed as follows.

  Thus, by using the connection substrate 35 or 45, the line-type or panel-type LED light source 30 or 40 can be easily configured. The line-type LED light source 30 or the panel-type LED light source 40 has an advantage that no dark portion is generated on the light exit surface because there is no missing portion of the sealing resin 7 at the end of the connected unit.

  Next, a third embodiment of the present invention will be described. FIG. 15 is a plan view of an LED light source unit according to a third embodiment of the present invention, and FIG. 16 is a plan view of the LED light source unit showing the sealing resin removed from FIG. FIG. 17 is a side view of the LED light source unit.

  15 to 17, reference numeral 21 denotes an LED light source unit as a basic component constituting the LED light source, and 22 denotes a long base made of a metal such as a copper alloy having high thermal conductivity. . Reference numeral 23 denotes a single double-sided printed circuit board made of glass epoxy or the like bonded on the base 22. A through hole 23a as a long hole shaped through hole is formed at the center of the printed board 23, and wiring patterns 23b, 23c and 23d are formed along the through long hole 23a on the upper surface. A plurality of connection electrode portions are provided at equal intervals in each of the wiring patterns 23b, 23c and 23d. A pair of cathode terminal electrode 23e and anode terminal electrode 23f are provided on the upper surface side at one end portion of the printed circuit board 23, and 28 indicates a through hole formed at this end portion. The other end portion of the printed circuit board 23 is provided with a cathode terminal electrode 23e and an anode terminal electrode 23f on the lower surface side through a through hole 23h, which are connected to the wiring patterns 23b and 23c, respectively. There is no base 22 below this end where the through hole 23g is formed. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and names, and detailed description thereof is omitted.

  Next, the effect of the LED light source unit which is the 3rd Embodiment of this invention is demonstrated. Through holes 28 and 23 g are provided at both ends of the LED light source unit 21, a pair of terminal electrodes 23 e and 23 f are formed at one end on the upper surface side, and a pair of terminal electrodes 23 a at the lower surface side at the other end. 23f are formed, the terminal electrodes can be connected to each other without using a connecting substrate or the like by overlapping the ends of the LED light source unit 21 when they are connected. Other effects are the same as those of the first embodiment.

  Next, the LED light source formed using the LED light source unit 21 which is the 3rd Embodiment of this invention is demonstrated in detail with reference to drawings. FIG. 18 is a partial plan view of a line-type LED light source assembled using the LED light source unit 21. FIG. 19 is a cross-sectional view showing the AA cross section of FIG.

  18 and 19, reference numeral 50 denotes an LED light source in which an arbitrary number of LED light source units 21 are arranged in a line in the longitudinal direction. Reference numeral 54 denotes a long heat radiating plate made of a metal such as a copper alloy having high thermal conductivity. A stepped portion 54b having a sawtooth cross section is formed on the upper surface of the heat radiating plate 54, and the LED light source unit. No gap is formed between the heat sink 21 and the heat sink 54. The screw 16 serves to fix the LED light source unit 21 and to connect the terminal electrodes.

  Note that it is easy to configure a panel-type LED light source by arranging the line-shaped LED light sources 50 shown in FIG. 18 in a direction perpendicular to the longitudinal direction on a panel-like heat sink as shown in FIG. In this way, a line-type or panel-type LED light source can be easily configured without using a connecting substrate, and by processing into a heat radiating plate, a gap with the LED light source unit 21 can be eliminated to further improve heat dissipation characteristics. it can.

  Next, fourth and fifth embodiments of the present invention will be described. FIG. 20 is a plan view of an LED light source unit according to a fourth embodiment of the present invention, and FIG. 21 is a side view of the LED light source unit. FIG. 22 is a plan view of an LED light source unit according to a fifth embodiment of the present invention, and FIG. 23 is a side view of the LED light source unit.

  20 and 21, reference numeral 31 denotes an LED light source unit as a basic component constituting the LED light source according to the fourth embodiment of the present invention, and 32 denotes a metal such as a copper alloy having high thermal conductivity. The long base which consists of is shown. Reference numeral 33 denotes a single printed circuit board of single-sided wiring made of glass epoxy or the like bonded on the base 32. A cathode terminal electrode 33e and an anode terminal electrode 33f are provided on the upper surface side at both ends of the printed board 33, and each is connected to the LED element 4 through a wiring pattern. Through holes 38 are formed at both ends of the LED light source unit 31. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and names, and detailed description thereof is omitted.

  22 and 23, reference numeral 41 denotes an LED light source unit as a basic component constituting the LED light source according to the fifth embodiment of the present invention. Reference numeral 42 denotes a copper alloy having excellent thermal conductivity. A long base is shown. Reference numeral 43 denotes a single printed circuit board having double-sided wiring made of glass epoxy or the like bonded on the base 42. Both ends of the printed circuit board 43 project outward from the base 42 in the longitudinal direction, and a pair of cathode terminal electrodes 43e and anode terminal electrodes 43f connected to the upper surface side through through-holes 43h are provided on the lower surfaces of the printed circuit boards 43, respectively. Each of them is connected to the LED element 4 via a wiring. Through holes 43g are formed at both ends of the printed circuit board 43. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and names, and detailed description thereof is omitted.

  Next, the effect of the LED light source unit which is the 4th and 5th embodiment of this invention is demonstrated. Through holes 38 and 43 g are provided at both ends of the LED light source units 31 and 41, a pair of terminal electrodes 33 e and 33 f are formed on the upper surface side at the end of the LED light source unit 31, and at the end of the LED light source unit 41. Since the pair of terminal electrodes 43e and 43f are formed on the lower surface side, when the LED light source unit 31 and the LED light source unit 41 are alternately connected in the longitudinal direction, the LED light source unit 31 faces down at both ends. The terminal electrodes can be connected to each other by stacking them with 41 facing up. Other effects are the same as in the case of the first embodiment.

  Next, LED light sources formed using the LED light source units 31 and 41 according to the fourth and fifth embodiments of the present invention will be described in detail with reference to the drawings. FIG. 24 is a partial plan view of a line type LED light source assembled using the LED light source units 31 and 41. FIG. 25 is a cross-sectional view showing the AA cross section of FIG.

  24 and 25, reference numeral 60 denotes an LED light source in which LED light source units 31 and 41 are alternately arranged in an arbitrary number of lines. Reference numeral 64 denotes a single long heat radiating plate made of a metal such as a copper alloy having high thermal conductivity. A stepped portion 64b is formed on the upper surface of the heat radiating plate 64 so as to sink the LED light source unit 31 portion. Therefore, no gap is generated between the LED light source unit 41 and the LED light source unit 41. The screw 16 that is screwed into the screw hole 64a of the heat radiating plate 64 serves to fix the LED light source units 31 and 41 and to connect the terminal electrodes.

  Note that it is easy to form a panel-type LED light source by arranging the line-shaped LED light sources 60 shown in FIGS. 24 and 25 on a panel-like heat sink in a direction perpendicular to the longitudinal direction as shown in FIG. . Thus, if the LED light source units 31 and 41 are used, a line-type or panel-type LED light source can be easily configured without using a connecting substrate.

  Next, the LED light source which is another embodiment formed using the LED light source unit 1 which is the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 26 is a partial plan view of a line-type LED light source assembled using the LED light source unit 1. 27 is a cross-sectional view showing the AA cross section of FIG. 26, and FIG. 28 is a cross-sectional view showing the BB cross section of FIG.

  26 to 28, reference numeral 17 denotes a reflection frame that is a resin molded product. The reflection frame 17 includes a window 17a having a reflection surface inclined so as to surround the sealing resin 7 portion, and the window 17a and the window 17a. A through hole 17b for screwing is formed in between. Reference numeral 70 denotes a line-type LED light source having a configuration in which a reflective frame 17 is further incorporated on the connection substrate 15 with respect to the line-type LED light source 10 configured using the LED light source unit 1.

  Next, an LED light source which is another embodiment formed using the LED light source unit 11 according to the second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 29 is a partial plan view of a line-type LED light source assembled using the LED light source unit 11. FIG. 30 is a cross-sectional view showing the AA cross section of FIG.

  29 and 30, reference numeral 27 denotes a reflection frame which is a resin molded product. The reflection frame 27 includes a window 27 a having a reflection surface inclined so as to surround the sealing resin 7 portion, and a screw-through through hole. 27b is formed. Reference numeral 80 denotes a line-type LED light source having a structure in which a reflection frame 27 is further incorporated on the connection substrate 35 with respect to the line-type LED light source 30 configured using the LED light source unit 11. In the case of this LED light source 80, since there is no window frame on the connection part of the LED light source unit 11, there is an advantage that no dark part is generated on the line-shaped light exit surface.

  The line-type LED light source 70 or 80 having the reflective frame 17 or the reflective frame 27 described above can further improve luminance by narrowing the emitted light due to the presence of the reflective frame. It is easy to configure a panel type LED light source with a reflective frame by arranging these line type LED light sources in a direction perpendicular to the longitudinal direction and fixing them on a panel-like heat sink. Thus, a panel-type LED light source having a large area and high brightness can be obtained.

  Since the LED light source unit of the present invention can be used as a basic unit for assembly, it can be applied not only as a single unit but also as an LED light source for a camera flash or the like, and by combining a plurality of LED light sources suitable for various uses. be able to.

It is a top view which shows the LED light source unit which is the 1st Embodiment of this invention. It is a top view which shows the place remove | excluding sealing resin from FIG. It is a side view of the LED light source unit of FIG. It is a partial top view which shows the line type LED light source comprised using the LED light source unit which is the 1st Embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is (a) top view and (b) back view which show the connection board | substrate of FIG. It is a partial top view which shows the panel type LED light source comprised using the LED light source unit which is the 1st Embodiment of this invention. FIG. 8A is a partial plan view and FIG. 8B is a partial rear view illustrating the connection board of FIG. 7. It is a top view which shows the LED light source unit which is the 2nd Embodiment of this invention. It is a top view which shows the place remove | excluding sealing resin from FIG. It is a partial top view which shows the line type LED light source comprised using the LED light source unit which is the 2nd Embodiment of this invention. It is the (a) partial top view and (b) partial back view of the connection board | substrate used for FIG. It is a partial top view which shows the panel type LED light source comprised using the LED light source unit which is the 2nd Embodiment of this invention. It is the (a) partial top view and (b) partial back view which show the connection board | substrate used for FIG. It is a top view which shows the LED light source unit which is the 3rd Embodiment of this invention. It is a top view which shows the place remove | excluding sealing resin from FIG. It is a side view which shows the LED light source unit of FIG. It is a partial top view which shows the line type LED light source comprised using the LED light source unit which is the 3rd Embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is a top view which shows the LED light source unit which is the 4th Embodiment of this invention. It is a side view which shows the side surface of the LED light source unit of FIG. It is a top view which shows the LED light source unit which is the 5th Embodiment of this invention. It is a side view which shows the side surface of the LED light source unit of FIG. It is a partial top view which shows the line type LED light source comprised using the LED light source unit which is the 4th and 5th embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is a fragmentary top view which shows the line type LED light source with a reflective frame comprised using the LED light source unit which is the 1st Embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG. It is sectional drawing which shows the BB cross section of FIG. It is a partial top view which shows the line type LED light source with a reflective frame comprised using the LED light source unit which is the 2nd Embodiment of this invention. It is sectional drawing which shows the AA cross section of FIG.

Explanation of symbols

1, 11, 21, 31, 41 LED light source unit 2, 12, 22, 32, 42 Base 3, 13, 23, 33, 43 Printed circuit board 3a, 13a Through oblong hole 3b, 3c, 3d, 13b, 13c, 13d Wiring pattern 3e, 3f, 13e, 13f, 23e, 23f, 33e, 33f, 43e, 43f Terminal electrode 4 LED element 5, 6 Wire 7 Translucent resin 8, 18 Notch 10, 20, 30, 40, 50 , 60, 70, 80 LED light source 14, 24, 34, 44, 54, 64 Radiating plate 15, 25, 35, 45 Connection board 16 Screw 17, 27 Reflection frame 23g, 28, 38, 43g Through hole

Claims (12)

It consists of a substantially rectangular parallelepiped base made of a metal with high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. Has a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via a wiring pattern, and a light emitting diode light source in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin A plurality of light emitting diode light source units formed on an upper surface of the printed circuit board so as to sandwich a semi-cylindrical cutout formed on both end surfaces of the light emitting diode light source unit in the longitudinal direction. and on the heat radiating plate made of a sheet of metal having high heat conductivity, and a line state by arranging so as to be adjacent to the long side direction, said light emitting diode light source units adjacent Emitting diode light sources, characterized in that it has an electrode for connection across the terminal electrodes of on the cutout portion. The heat radiation plate is formed as a single panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat radiation plate so as to be adjacent to each other in a direction perpendicular to the longitudinal direction. The light-emitting diode light source according to claim 1 . It consists of a substantially rectangular parallelepiped base made of a metal with high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. Has a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via a wiring pattern, and a light emitting diode light source in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin A plurality of light emitting diode light source units formed on the upper surface side of the printed circuit board so that the terminal electrodes are along quarter-cutout portions formed in four corners of the light emitting diode light source unit. and on the heat radiating plate made of a sheet of metal having high heat conductivity, and a line state by arranging so as to be adjacent to the long side direction, the cut portion of the light-emitting diode light source units adjacent The light emitting diode light source is covered with a connecting substrate having an electrode for connecting across the terminal electrodes together, characterized in that screwed to the connection substrate to the heat sink.   The heat radiation plate is formed as a single panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat radiation plate so as to be adjacent to each other in a direction perpendicular to the longitudinal direction. The light-emitting diode light source according to claim 3. It consists of a substantially rectangular parallelepiped base made of a metal with high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. Has a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via a wiring pattern, and a light emitting diode light source in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin The light emitting diode light source unit has a through hole at both ends, and the pair of terminal electrodes provided so as to sandwich the through hole is provided at one end on the upper surface of the printed circuit board, and the other end together are provided on the lower surface is in parts, a plurality of light emitting diode light source unit is not the base at the bottom of the other end portion, Ino each other on the heat radiating plate made of a sheet of metal having high heat conductivity Emitting diode light sources, characterized in that in the line state side by side in the longitudinal direction so that pole overlap was set screw the LED light source unit on the heat radiating plate. The light emitting diode light source according to claim 5 , wherein a step portion is processed on the heat radiating plate so that the light emitting diode light source unit is in close contact with the heat radiating plate. The heat radiation plate is formed as a single panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat radiation plate so as to be adjacent to each other in a direction perpendicular to the longitudinal direction. The light-emitting diode light source according to claim 5 . It consists of a substantially rectangular parallelepiped base made of a metal with high thermal conductivity, a plurality of light emitting diode elements mounted on the upper surface of the base, and a printed circuit board disposed on the upper surface of the base. Has a pair of terminal electrodes electrically connected to each electrode of the light emitting diode element via a wiring pattern, and a light emitting diode light source in which the upper surface of the base except the terminal electrode portion is sealed with a translucent resin The light emitting diode light source unit, which has a through hole at both ends of the light emitting diode light source unit, and is provided on the upper surface side of the printed circuit board so that both of the pair of terminal electrodes sandwich the through hole. , or also with is provided in the even pair of terminal electrodes are both the lower surface side, a plurality of light emitting diode light source unit is not the base at the bottom of the end portions , And the line state alternately arranged in the longitudinal direction so that the electrode portions of the physician each other on one high thermal conductivity heat radiating board consisting of the metal overlap was set screw the LED light source unit on the heat radiating plate A light-emitting diode light source.   The light emitting diode light source according to claim 8, wherein a step portion is processed on the heat radiating plate so that the light emitting diode light source unit is in close contact with the heat radiating plate. The heat radiation plate is formed as a single panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat radiation plate so as to be adjacent to each other in a direction perpendicular to the longitudinal direction. The light-emitting diode light source according to claim 8 . A hole for screwing is provided in the reflection frame covering the portion other than the sealing resin portion of the light emitting diode light source unit, and the reflection frame, the connecting substrate, and the light emitting diode light source unit are screwed together to the heat radiating plate. The light-emitting diode light source according to claim 1 or 3 , wherein the light-emitting diode light source is in a line state. The heat radiation plate is formed as a single panel, and a plurality of the light emitting diode light source units in the line state are arranged on the heat radiation plate so as to be adjacent to each other in a direction perpendicular to the longitudinal direction. The light-emitting diode light source according to claim 11 .

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