JP2012009856A - Led light source device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a LED light source device that hardly affected by temperature rises even under continuous lighting, has excellent color rendering properties and sufficient illuminance, and make a user feel nothing wrong as a white light source when it is viewed from the front face.SOLUTION: A LED light source device includes: a first LED light-emitting element 3A that emits white light, a second LED light-emitting element 3C that emits colored light; and a composite prism 11 that covers the second LED light-emitting element 3C. The colored light from the second LED light-emitting element 3C is scattered on a surface of a substrate 3b by the composite prism 11. A power control part 4 and a light source part 1 are separated by a connection part 5.

Description

Detailed Description of the Invention

  The present invention relates to an LED light source device that has improved color rendering properties and is less affected by temperature rise even in a globe (bulb) type.

  Light-emitting diodes (LEDs) are becoming popular as incandescent lamps and light sources that are more energy efficient than fluorescent lamps. Regarding LED light sources, color rendering is a problem as in the case of fluorescent lamps, and various ideas and proposals have been made.

  There are known LED light sources that combine a plurality of single-color LED elements having different emission colors to obtain a preferable color rendering property on the surface to be illuminated. Document 2). In Patent Document 1, light emitting diodes emitting colored light having a relatively short wavelength are substantially pointed at four positions near the center of the circle and its outer periphery, and light emitting diodes emitting red light are located at other positions in the same circle. A symmetrically arranged LED light source device is described.

  FIG. 7 is a plan view from the light emitting surface side of the LED light source device of Patent Document 1, and particularly shows the arrangement of the LED light emitting elements on the LED substrate. In the light source device 71, a short wavelength light emitting diode 72 having main emission wavelengths of 400 to 500 nm and 500 to 600 nm and a long wavelength light emitting diode 73 having main emission wavelengths of 600 to 780 nm are disposed on a substrate 74. . The short wavelength light emitting diodes 72 are arranged at four locations near the center of the circle and the outer periphery thereof, and the long wavelength light emitting diodes 73 are arranged substantially point-symmetrically at other positions in the circle.

  A light source combining such a single color light emitting LED element has a light amount smaller than that of a light source constituted by a white light emitting LED because the light output of each LED element is smaller than that of a white light emitting LED element. Therefore, in a light source composed of a plurality of single-color light emitting LED elements, practically sufficient illuminance could not be obtained even if the mounting density was increased to an allowable limit.

  Utility Model Registration Gazette 3132253 (Patent Document 3) describes that a light source device combining a white light emitting LED and a single color light emitting LED element has excellent color rendering properties and sufficient illuminance. In this device, LED elements are arranged on three parallel straight lines, white light-emitting LED elements are arranged in the outer two rows, two red light-emitting LED devices and one yellow light are arranged in one row therebetween. A combination of light emitting LED elements is arranged.

  FIG. 8 shows the arrangement of the light source devices described in Patent Document 3. In the light source 81, the white light emitting LEDs 83a and 83b are arranged in two rows on the outer side of the substrate 82, respectively. A combination of two red light emitting diodes 84 and 84 and one yellow light emitting diode 85 is arranged on another straight line between the two outer straight lines.

  However, the above-described LED light source in which a colored light emitting diode and a white light emitting LED are combined gives a sense of incongruity because the colored light emitting LED can be seen properly when viewed from the front. In addition, a reflected image of the light source is reflected on the object to be illuminated having a glossy surface, and not only the color of the colored light source is recognized remarkably, but also after looking at this image, an afterimage of the complementary color remains in the field of view, which is unpleasant.

  In recent years, lighting devices using LEDs as light sources have come to be widely used for general lighting, including home use, and are similar to incandescent bulbs, not only in the shape of straight tubes and rings corresponding to fluorescent lamps. A (globe) type light source device has come to the market.

  FIG. 9 shows a conventional globe-type LED bulb, and FIG. 10 shows a partial cross section thereof. The light bulb 90 includes a globe 91, a base 92, an LED substrate 93, a power control unit 94 for supplying power to the LED substrate, and wiring 95. The globe 91 has a truncated cone shape. As with the incandescent lamp, the base 92 has an external thread portion 2 a that fits into a socket that forms an internal thread, and is an electrical connection means for supplying power from an external power source (not shown) to the LED board 93 via the power control section 94. is there. The LED substrate 93 is provided at the head of the globe 91, the base 92 is provided at the base thereof, and the power control unit 94 is provided inside the globe 91. On the outside of the globe 91, fins 91b for dissipating heat generated from the LED substrate 93 are provided.

  As shown in FIG. 10, the LED substrate 93 includes a substrate 93b and an LED light emitting element 93a fixed to one surface thereof. A circuit component 94b is attached to the other surface of the substrate 93b. The power control unit 94 includes the circuit component 94 b and a circuit component 94 a provided inside the globe 91, and these are connected by a wiring 95. The circuit component 94b is composed of an integrated circuit (IC) including a semiconductor element. The electric power supplied from the external power source (not shown) through the base 92 is converted into a necessary form by the power control unit 94 and supplied to the LED light emitting element 93a.

  Such LED bulbs are becoming popular in recent years because they are small, are compatible with common connection devices such as screw-in sockets, and are convenient for mounting and replacement. This type of LED bulb is disclosed in, for example, Japanese Patent Application Laid-Open No. 2009-123461 (Patent Document 4), 2009-135526 (Patent Document 5), 2009-163955 (Patent Document 6), 2009-170114 (Patent Document 7), 2009-176925 (Patent Document 8).

  LED lighting devices have the advantage of lower power consumption than incandescent lamps, but still a rise in temperature due to heat from the LEDs is inevitable. Therefore, a fin-like object is provided on the outer surface to prevent temperature rise. In the globe-type LED light source device, even if a heat dissipation promoting means such as a fin is provided on the outside, the heat emitted from the LED element is not sufficiently dissipated. The temperature of the power control unit housed inside rises. Such a temperature rise affects the power control unit, particularly circuit components attached to the LED substrate, and shortens the life of the device.

Further, in the conventional globe-type LED light source device, since the light emitting part held by the globe and the power receiving member are integrally formed, the direction of the illumination light is changed once attached to an external power output device such as a socket. It is not possible. In order to change the direction of the illumination light, it is necessary to change the direction of the external power output device such as a socket.

  JP 2003-298118 A   JP 2004-111357 A   Utility Model Registration Gazette 3132253   JP2009-123641   JP2009-1335026   JP2009-163955   JP2009-170114A   JP2009-176925

Problems to be solved by the invention

  Therefore, an object of the present invention is to realize an LED light source device in which a colored LED element used together with a white light emitting LED has no sense of incongruity as a white light source even when viewed from the front.

  Another object of the present invention is to realize an LED light source device that has no harmful effect due to the reflected image of the colored light emitting LED element reflected on the glossy surface of the irradiated object even when the colored light emitting LED element is used together with the white light emitting LED. It is in.

  Still another object of the present invention is to realize a compact LED light source device that can obtain a sufficient illuminance and has a long lifetime due to the reduction of the influence due to temperature rise.

  Another object of the present invention is to realize an LED light source device that can freely change the direction of illumination light even if it is mounted on a fixed external power output device.

Means for solving the problem

  In order to achieve the above object, an LED light source device of the present invention includes an LED light emitting device and a substrate having the LED light emitting device arranged on one surface. The LED light emitting device includes a main LED light emitting element and The additional LED light emitting element and the optical control element covering the additional LED light emitting element, the main LED light emitting element is a light emitting element that emits white light, and the additional LED light emitting element is emitted from the main LED light emitting element. A light-emitting element that emits light different from white light, and the optical control element transmits the light emitted from the additional LED light-emitting element to the surface of the substrate to such an extent that the outline of the additional LED light-emitting element cannot be easily recognized from the front of the LED light source device. It has the ability to scatter in the vicinity of.

  The light emitted from the additional LED light emitting element may be colored light, or may be white light having a color temperature different from that of the white light emitted from the main light emitting element. Colored light such as yellow and red is advantageous.

  An optical control element advantageous in the LED light source device of the present invention is a composite prism composed of an isosceles right angle prism (hereinafter referred to as a right angle prism), a plano-convex lens, and a transparent cylinder. These elements are such that one bottom surface of the cylinder is in close contact with one side of the right angle prism (right angled), the other bottom surface of the cylinder is in close contact with the plane of the plano-convex lens, and the right angle of the right angle prism. It arrange | positions so that the other surface adjacent to may face an additional LED light emitting element. The convex surface of the plano-convex lens faces the open space.

  The plano-convex lens of the compound prism preferably has a curvature radius that is not smaller than the lens thickness and does not exceed twice that of the lens. A radius of curvature equal to or slightly larger than the lens thickness is particularly suitable. The focal length of the plano-convex lens is preferably selected so that the light beam incident on the composite prism from the light emitting element exits from the convex surface of the lens as scattered light.

  The optical control element is made of a transparent solid such as glass, quartz, or various plastic synthetic resins. Each part, in particular, the cylindrical part and the plano-convex lens may be integrally formed. The thickness (height) of the cylindrical portion is suitably equal to or less than the diameter, for example, the same as the radius.

  The light emitted from the additional LED light emitting element and incident on the composite prism is mainly emitted as scattered light at a wide angle from the convex surface of the plano-convex lens, and part of the scattered light is on the surface of the substrate on which the LED light emitting element is provided. Reflected in the vicinity of the main LED light emitting element. And although it discharge | releases ahead of a LED board, a part of light is discharge | released directly from a convex surface. The light emitted from the side surface of the transparent cylindrical part also slightly contributes to the scattered light emitted in front of the LED substrate. The light scattered from the composite prism is added to the white light emitted from the main LED light emitting element, and the light that is mixed and emitted from the LED lighting device has a good color rendering property.

  Two or more primary LED light emitting elements can be placed along or inside the circumference of a point, and additional LED light emitting elements can be placed along or outside this circumference. . The additional LED light emitting element may be arranged along another circumference having a larger radius than the circumference. For such an arrangement of the light emitting elements, it is advantageous to arrange the convex surface of the plano-convex lens of the composite prism covering the additional LED light emitting elements toward the center of the circle.

  Two or more additional LED light emitting elements may be arranged on or inside the circumference, and the main LED light emitting elements may be arranged outside the circumference. The main LED light emitting element may be disposed on another circumference having a radius larger than the circumference. In this case, the composite prism is preferably arranged with the convex surface of the plano-convex lens facing the outside of the circle.

  When two or more main LED light emitting elements are provided, white light having the same color temperature may be emitted, or white light having different color temperatures may be emitted.

  The main LED light emitting elements may be arranged on one or more predetermined radii of the circle, and some or all of the additional LED light emitting elements may be arranged on a different radius. When the former and latter radii are alternately positioned, the amount of light and the hue of the irradiation light are averaged, and the heat radiation from the light source is easily averaged. The additional LED light emitting element and the main LED light emitting element may be arranged on the same radius. The main LED light emitting element may be arranged at the center of the circle.

  In order to obtain satisfactory illuminance, it is preferred to use three or more primary LED light emitting elements and three or more additional LED light emitting elements. Since the main LED light emitting element contributes most of the luminous flux from the light source device, in many cases, the light emitting amount larger than that of the additional light emitting element is used. Since the additional LED light-emitting element mainly aims to obtain a desired color rendering property, in many cases, the power consumption may be smaller than that of the main LED light-emitting element. If a sufficient amount of light can be obtained, one LED light emitting element may be used as the main LED light emitting element.

  The additional LED light emitting element can be one that provides a composition richer in a longer wavelength component than white light emitted from the main LED light emitting element (for example, red, yellow). For example, if the additional LED light-emitting element is a light-emitting element that emits red light, a light source having a lower color temperature can be obtained than in the case of using only a white light-emitting element, which is useful for lighting meat on a display shelf. The same effect can be obtained by using a light emitting element that emits yellow light.

  The additional LED light emitting element may be one that provides a composition richer in a short wavelength component than white light emitted from the main LED light emitting element (for example, blue or green). If a light emitting element that emits green light or blue light is used, a light source having a higher color temperature than that of the main light emitting element alone can be obtained, so that a light source useful for illuminating jewelry or green vegetables can be obtained.

  When two or more additional LED light emitting elements are used, some of them may emit different colors from others (for example, red and yellow, blue and green). The combination of red and yellow is useful for lighting meat on the display shelf, and the combination of blue and green is useful for lighting vegetables.

  The LED light source device of the present invention advantageous for realizing the object of the present invention includes a light source unit comprising an LED substrate having at least one LED light emitting element arranged on one surface, and power control for supplying power to the LED light emitting element. And an LED light source device comprising a power receiving member for supplying power from an external power source to the power control unit, the power control unit includes a semiconductor element, and the power receiving member is formed integrally with the power control unit, A connecting member for connecting the LED light source unit and the power control unit is provided, and the power control unit is separated from the light source unit through the connecting member and a space surrounding the connecting member and open to the outside. To do.

  The connecting member is preferably flexible and self-holding in shape. The connecting member connecting the light source unit and the power control unit is preferably made of a material having excellent heat conduction such as metal in order to efficiently discharge the heat generated from the LED light emitting element.

  The light source part may be in the shape of a column, other columns, or a board, and the LED light emitting element can be placed on the top. The board | substrate with respect to a LED light emitting element can be set | placed on the upper part of a light source part.

  Both the light source unit and the power control unit may include an outer shell formed of a plastic or post-curing synthetic resin. The outer side surface and bottom of the light source section can be formed of a plastic or post-curing synthetic resin. The synthetic resin can be selected from polyethylene resin, polypropylene resin, polystyrene resin, polycarbonate resin, polyester resin, acrylic resin, and urea resin (a copolymer may be used).

  The light source unit is preferably configured by a combination of a main LED light emitting element and an additional LED light emitting element as described above.

  The light source device may include a ventilation hole penetrating the inside thereof on a side surface, a bottom portion, or both of the outer shell. In particular, when both the side surface and the bottom of the light source are made of synthetic resin, it is preferable to provide a ventilation hole in the bottom.

The invention's effect

  According to the present invention, a preferable color rendering property can be obtained according to the type of article to be illuminated, and an LED light source device having sufficient illuminance can be realized. Since the LED light source device of the present invention includes an LED light emitting element that emits white light and an additional LED light emitting element that emits colored light, the desired color rendering can be realized by selecting the additional LED light emitting element. Furthermore, by providing an optical control element (composite prism) facing the additional LED light emitting element, the colored light from the additional LED light emitting element is appropriately scattered, utilizing the scattered light and the reflected light from the surface of the substrate, The hue can be adjusted.

  The LED light source device of the present invention has no sense of incongruity as a white light source when viewed from the front, and is recognized as a white light source even if a reflected image is reflected on a glossy irradiated surface. Further, there is no defect that a complementary color afterimage remains in the field of view after staring.

  According to the present invention, it is possible to realize a globe-type LED light source device that has a long life because sufficient illuminance is obtained and temperature rise is suppressed when lighting is continued.

  The LED light source device of the present invention includes a connecting member between the LED light source unit and the power control unit, and the power control unit is separated from the light source unit through the connecting member and a space surrounding the connecting member and opened to the outside. Therefore, most of the heat generated from the LED light emitting element is dissipated from the surface of the connecting member to the outside, and the heat reaching the power control unit is extremely small. As a result, even when lighting is continued for a long time, the temperature increase of the power control unit is suppressed, so that deterioration of the semiconductor element included in the power control unit due to high temperature is avoided, and the power control unit is directly connected to the light source unit. The life of the power control unit, and thus the entire light source device, is extended as compared with the case where the light source device is present.

  1 and 2 show an LED lamp which is one embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the LED lamp of FIG. The LED lamp 10 includes a light source unit 1, a base 2, a power control unit 4, and a connecting tube 5 that connects the LED light source unit and the power control unit. The light source unit 1 includes an LED substrate 3 (see FIG. 3) and an outer shell 1a. The connecting pipe 5 is a bendable metal pipe.

(First embodiment)
FIG. 3 shows a main part of the light source unit in the first embodiment. In this figure, the optical character control element is omitted for convenience. The LED substrate 3 includes a substrate 3b, three LED light emitting elements 3A, nine LED light emitting elements 3B, and nine LED light emitting elements 3C provided thereon. The LED light-emitting element 3A is along the circumference R1 having the smallest radius, the LED light-emitting element 3C is along the circumference R3 having the largest radius, and the LED light-emitting element 3B is along the circumference R2 having a slightly smaller radius than R3. Are arranged respectively. The nine LED light-emitting elements 3B are arranged on a radius separated by 40 degrees around the center of the circle, and the LED light-emitting elements 3C are located on a radius that bisects them. Similarly, the three LED light emitting elements 3A are located on a common radius with the LED light emitting element 3C.

  The LED light emitting element 3A emits white light (for example, 6500 ° K) having a high color temperature. The LED light emitting element 3B has the largest light output and emits light at a slightly lower color temperature (for example, 3400 ° K.). The LED light emitting element 3C is an LED light emitting element that emits yellow light, for example, and has the smallest light output. The LED light emitting elements 3A and 3B correspond to “main LED light emitting elements” of the present invention, and the LED light emitting element 3C corresponds to “additional LED light emitting elements” of the present invention.

  FIG. 4 shows a partial cross section along line IV-IV in FIG. Optical control elements each composed of a composite prism 11 (not shown in FIG. 3) are provided on the front surface (light emission surface) of the LED light emitting element 3C. The compound prism 11 includes a right-angle prism 21, a transparent cylindrical portion 22, and a plano-convex lens 23. The right-angle prism 21 has surfaces 21a and 21b that sandwich a right angle, and a slope 21c that forms an angle of 45 degrees with them. The cylindrical portion 22 has bottom surfaces 22d and 22e. The plano-convex lens 23 has a flat surface 23f and a convex surface 23g. The cylindrical portion 22 and the plano-convex lens 23 are integrally fused in the former bottom surface 22e and the plano-convex lens plane 23f, and these are virtual planes for convenience of explanation. The surface 21a of the right-angle prism 21 faces the LED light emitting element 3C. The composite prism 11 is disposed such that the convex surface 23g faces the center of the circles R1, R2, and R3.

  FIG. 5 is a front view of the compound prism 11 from the plano-convex lens 23 side.

(Operation of the first embodiment)
The composite prism 11 is configured such that the bottom surface 22d of the cylindrical portion 22 is in close contact with the surface 21b that sandwiches the right angle of the right-angle prism, and the other bottom surface 22e of the cylinder is in close contact with the flat surface 23f of the plano-convex lens. It arrange | positions so that the other surface 21a may oppose LED light emitting element 3C. With this configuration and arrangement, the colored light emitted from the additional LED light emitting element 3C passes through the composite prism 11, and is mainly emitted as scattered light at a wide angle from the convex surface 23g of the plano-convex lens 23, and a part thereof is the surface of the substrate 3b. Reflected by the (surface on which the LED element is installed), a part is directly emitted to the front surface of the LED substrate 3. The light scattered from the side surface of the cylindrical portion 22 also slightly contributes to the scattered light emitted to the front surface of the LED substrate 3.

  The above-described colored light resulting from scattering from the composite prism 11 and white light having a relatively high color temperature (for example, 6500 ° K.) emitted from the LED light emitting element 3A are emitted from the LED light emitting element 3B. White light having a desired color rendering property is emitted as illumination light from the light source unit 1 of the LED lamp 10.

(Second embodiment)
FIG. 6 shows the main part of the light source unit in the second embodiment of the present invention. Other than the light source unit is the same as in the first embodiment, and a description thereof will be omitted. The LED substrate 33 includes a substrate 3b, five LED light emitting elements 33A and five LED light emitting elements 33C provided on the substrate 3b, and is accommodated in the outer shell 1a. The LED light emitting element 33A is arranged along the inner circumference R11, and the LED light emitting element 33C is arranged along the outer circumference R12 concentric with the circumference R11. The LED light emitting element 33A is arranged on a radius separated by 72 degrees around the center of the circle, and the LED light emitting element 33C is located on a radius that bisects the space therebetween. The LED light emitting element 33C is covered with a composite prism 11 (not shown). The composite prism 11 is disposed such that the convex surface 23g faces the center of the circles R11 and R12.

  The LED light emitting element 33A emits white light (for example, a color temperature of 6500 ° K). The LED light emitting element 33C is an LED light emitting element that emits yellow light and has a small light output. The LED light emitting element 33A corresponds to “main LED light emitting element” in the claims, and the LED light emitting element 33C corresponds to “additional LED light emitting element”.

  As the LED light emitting element 3C in the first embodiment and the LED light emitting element 33C in the second embodiment, those emitting red light may be used. Or it can also be set as green light emission.

  The side view of the LED lamp which is embodiment of this invention   Partial sectional view of an LED lamp according to the invention (FIG. 1)   The front view which shows the principal part of the light source part in 1st embodiment of this invention.   The fragmentary sectional view of the light source part in 1st embodiment of this invention   The front view of the compound prism used for 1st embodiment of this invention   The front view which shows the principal part of the light source part in 2nd embodiment of this invention.   Front view of a conventional LED light source device   Front view of another conventional LED light source device   Side view of a conventional globe-type LED bulb   Partial sectional view of a conventional globe-type LED bulb (FIG. 9)

DESCRIPTION OF SYMBOLS 10 LED lamp 1 Light source part 1a Outer part 2 Base 2a Male screw part 3 LED board 3b Board | substrate 3A, 3B, 3C LED light emitting element R1, R2, R3 Circumference 4 Electric power control part 5 Connecting pipe 11 Composite prism 21 Right angle prism 22 Cylindrical part 23 Plano-convex lens 21a Right-angle prism surface 21b Right-angle prism surface 21c Slope (of right-angle prism)
22d Cylinder bottom 22e Cylinder bottom 23f Plano-convex lens plane 23g Plano-convex lens convex surface 33 LED substrates 33A, 33C LED light emitting elements R11, R12 Circumference 72 Light emitting diode 73 Light emitting diode 74 Substrate 81 Light source 82 Substrates 83a, 83b White LED
84 Red LED
85 Yellow LED
90 Light Bulb 91 Globe 91b Fin 92 Base 2a Male Threaded Section 93 LED Board 93a LED Light Emitting Element 93b Board 94 Power Control Section 94a, 94b Circuit Component 95 Wiring

Claims (10)

In an LED light source device comprising an LED light emitting device and a substrate having the LED light emitting device arranged on one surface,
The LED light emitting device comprises a main LED light emitting element, an additional LED light emitting element, and an optical control element covering the additional LED light emitting element,
The main LED light emitting element is a light emitting element that emits white light,
The additional LED light emitting element is a light emitting element that emits light different from white light emitted by the main LED light emitting element,
The optical control element has the ability to scatter the light emitted by the additional LED light emitting element in the vicinity of the surface of the substrate to such an extent that the outline of the additional LED light emitting element cannot be easily recognized from the front of the LED light source device. An LED light source device comprising:   The LED light source device according to claim 1, wherein the additional LED light emitting element emits colored light. The optical control element is a composite prism composed of an isosceles right-angle prism, a plano-convex lens, and a transparent cylinder.
One bottom surface of the cylinder is in close contact with one surface of the right-angle prism that is perpendicular to the right angle, and the other bottom surface of the cylinder is in close contact with the plane of the plano-convex lens.
The other surface contacting the right angle of the right-angle prism faces the additional LED light emitting element 1 and the convex surface of the plano-convex lens is disposed so as to face an open space. LED light source device. In an LED light source device comprising at least an LED light-emitting device and a substrate having the LED light-emitting device arranged on one surface,
The LED light emitting device comprises at least one primary LED light emitting element, one or more additional LED light emitting elements, and one or more optical control elements,
Each of the additional LED light emitting elements is covered with the optical control element,
The optical control element is composed of a composite prism composed of an isosceles right-angle prism, a plano-convex lens, and a transparent cylinder.
One bottom surface of the cylinder is in intimate contact with one surface of the right-angle prism at right angles, the other bottom surface of the cylinder is in intimate contact with the plane of the plano-convex lens, and the other surface in contact with the right angle of the right-angle prism is The LED light source device, wherein a convex surface of the plano-convex lens is disposed so as to face an open space so as to face the additional LED light emitting element. The main LED light emitting element is disposed along or inside a predetermined circumference;
The additional LED light emitting element is disposed outside the circumference,
The LED light source device according to claim 4, wherein the compound prism is disposed so that a convex surface of the plano-convex lens faces a center of the circumference. The additional LED light emitting element is disposed along or inside a predetermined circumference;
The main LED light emitting element is disposed outside the circumference,
The LED light source device according to claim 4, wherein the composite prism is arranged so that a convex surface of the plano-convex lens faces in a direction opposite to the center of the circumference. From an LED light source unit composed of an LED substrate having LED light emitting devices arranged on one surface, a power control unit for supplying power to the LED light emitting device, and a power receiving member for supplying power from an external power source to the power control unit In the LED light source device in which the power control unit includes a semiconductor element,
The power control unit is formed integrally with the power receiving member,
The LED light source device includes a connecting member that connects the LED light source unit and the power control unit,
The LED light source device, wherein the power control unit is separated from the light source unit through a space surrounding the coupling member and opened to the outside and the coupling member.   The LED light source device according to claim 7, wherein the connecting member is flexible and self-holding in shape. The LED light emitting device comprises one or more LED light emitting elements, a substrate on which the LED light emitting elements are arranged on one surface, and an optical control element that covers one of the LED light emitting elements,
The optical control element is a composite prism composed of an isosceles right-angle prism, a plano-convex lens, and a transparent cylinder, and the bottom surface of one of the cylinders is in close contact with one surface that sandwiches the right angle of the right-angle prism. The other bottom surface of the LED is arranged so as to be in close contact with the plane of the plano-convex lens, and the other surface sandwiching the right angle of the right-angle prism is arranged to face one of the LED light emitting elements. LED light source device. In an LED light source device comprising an LED light emitting device including an LED light emitting element and a substrate on which the LED light emitting device is disposed on one surface,
The LED light source device includes a composite prism that covers the LED light emitting element, and the composite prism includes an isosceles right angle prism, a plano-convex lens, and a transparent cylinder.
The cylinder has one bottom surface in close contact with one surface of the right-angle prism that is in contact with the right angle, and the other bottom surface in close contact with the plane of the plano-convex lens.
The right-angle prism is arranged so that the other surface in contact with the right angle faces the LED light emitting element.
And the said plano-convex lens is an LED light source device arrange | positioned so that the said convex surface may face open space.

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