JP2009009898A - Lighting device and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device using a semiconductor light emitting element, which reduces the generation of dark part at the corner of the device, and to provide a luminaire using the same. <P>SOLUTION: A lighting device 10 includes: a base 11; semiconductor light-emitting elements 12 arranged substantially linearly; and a light emitting section 13 for illuminating between the semiconductor light emitting elements and the base end portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

   The present invention relates to an illuminating device using a semiconductor light emitting element such as a light emitting diode as a light source, and an illumination fixture using the illuminating device.

  In recent years, due to the improvement of the light emission efficiency of semiconductor light emitting devices, for example, light emitting diodes, lighting fixtures that employ light emitting diodes as light sources for general illumination have been commercialized, and in particular, light emitting diodes can be reduced in size and thickness. Therefore, a plurality of light emitting diodes are arranged in a straight line to form a lighting device composed of a line module, and they are connected to form a lighting device that forms a line.

  The illuminating device shown in Patent Document 1 constitutes an illuminating device in which a long light emitting element substrate in which light emitting diodes are linearly arranged, a lens for controlling light from the light emitting diodes, and a power circuit board are arranged in a main body case, A lighting source lamp is configured by connecting two of these lighting devices in the longitudinal direction.

  Patent Document 2 discloses an LED light source device that includes a plurality of LED chips of different colors mounted in a line along the longitudinal direction of a rectangular substrate, and a kamaboko-shaped transparent resin portion covering the entire LED chip. The LED light source device constitutes a lighting fixture such as a foot lamp.

Furthermore, in Patent Document 3, a plurality of LED light source units are aligned with each other in the longitudinal direction, and a terminal board of adjacent LED light source units is covered with a connecting substrate and screwed to a single heat sink. An LED light source is shown.
Japanese Patent Laid-Open No. 2006-31969 JP 2002-299697 A JP 2007-109404 A

  On the other hand, for example, in a lighting fixture such as a ceiling light for a house, a light source unit with a high degree of uniformity is required so that luminance unevenness does not occur in the globe. However, in this type of line-shaped illumination device, as shown in Patent Document 3, both ends of the package need to be fixed or connected to each other. Therefore, an LED chip serving as a light emitting source cannot be disposed at the end.

  For this reason, in the illuminating device which forms a line shape, both end portions become non-light emitting portions, dark portions are formed, luminance unevenness occurs, and there is a problem that it is not suitable as a light source of a lighting fixture. In particular, when a plurality of units are connected in the longitudinal direction, the dark part of both is connected to the connecting part, the width of the dark part is doubled, the light emitting part and the non-light emitting part are alternately arranged, and the appearance is It will be far from the line.

  This problem appears particularly prominently in a line-shaped illumination device, but even in a rectangular illumination device in which light-emitting diodes are arranged in a matrix, the illumination is further formed in the shape of a disk constituting a point module. Similar problems occur in devices and LED bulbs.

  For this reason, in an illuminating device in which the light source is configured by a semiconductor light emitting element such as a light emitting diode, an important issue is how to prevent a dark portion, which is a non-light emitting portion, from being generated at the end of the device.

  The present invention has been made in view of the above problems, and intends to provide an illuminating device using a semiconductor light-emitting element capable of reducing the occurrence of dark portions at the end of the device and an illuminating device using the illuminating device. Is.

  The invention of the lighting device according to claim 1 includes: a base; a semiconductor light emitting element disposed substantially linearly on the base; and a light emitting portion for causing light emission between the semiconductor light emitting element and the end of the base. It is characterized by comprising.

  According to the present invention, it is possible to reduce the occurrence of a dark portion at the device end by the light emitting portion for emitting light between the semiconductor light emitting element and the substrate end.

  In the present invention, the illuminating device is preferably incorporated as a light source such as a ceiling light to constitute a lighting fixture, but may constitute a backlight or a signboard lamp of a liquid crystal display device.

  The substrate is a member for arranging a semiconductor light emitting element as a light source, and is preferably composed of a circuit board on which the semiconductor light emitting element is mounted and a case member that covers and stores the circuit board, but the light emitting diode is installed on the case member. Even if the circuit board is omitted, the case member may be omitted and the circuit board alone may be used.

  The material of the case member constituting the base may be composed of a white synthetic resin having light resistance, heat resistance, and electrical insulation, for example, PBT (polybutylene terephthalate) in consideration of light reflection performance. . Furthermore, in consideration of the heat dissipation performance of the semiconductor light emitting device, the semiconductor light emitting device may be made of a metal having good thermal conductivity such as aluminum. The shape may be the shape of a long line constituting the line module, or it may be a disk shape to constitute a point module, all for obtaining the desired light distribution characteristics. Is acceptable.

  The circuit board constituting the base is preferably a wiring board on which a semiconductor light emitting element is mounted and supported. However, the configuration of the circuit board and the means for mounting are not limited to specific ones.

  As the semiconductor light emitting element, a light emitting element using a semiconductor as a light emitting source, such as a light emitting diode, an EL (electroluminescence) element, or a semiconductor laser, is allowed. Further, the semiconductor light emitting element preferably includes a plurality of semiconductor issuing elements arranged in a straight line or a curve to constitute a lighting device for a line module. However, the semiconductor light emitting element has a rectangular shape in which the semiconductor light emitting elements are arranged in a matrix. The lighting device may further constitute a lighting device or an LED bulb formed in a disk shape so as to form a point module by one or a plurality of semiconductor light emitting elements. The shape to be formed is not limited to a specific one.

  The light emitting unit for emitting light between the semiconductor light emitting element and the substrate end is, for example, a light-transmitting resin that covers the semiconductor light emitting element is disposed up to the substrate end, and the light emitted from the semiconductor light emitting element is transmitted to the substrate end. It is also possible to introduce light up to a part to emit light. Further, the reflector may be disposed at the end of the base so as to face the semiconductor light emitting element, and the light emitted from the semiconductor light emitting element may be reflected toward the base end by the reflector to emit light at the end. Good. Furthermore, the light emitting unit may be configured by the semiconductor light emitting element itself. For example, the semiconductor light emitting device located at the end is opposed to the light emitting surface in the longitudinal direction of the substrate, in other words, the device chip is arranged vertically and the light emitting surface of the device chip is directed toward the end of the substrate. You may make it introduce into a part.

  The invention of the lighting device according to claim 2 includes: a base; a semiconductor light emitting element disposed substantially linearly on the base; and a light-transmitting resin that covers the semiconductor light emitting element and is disposed up to an end of the base. It is characterized by comprising.

  For example, a transparent silicone resin or an epoxy resin is suitable as the light transmissive resin, but any resin having a light transmissive property such as translucent is acceptable. The light transmissive resin may be formed as a layer in which a predetermined phosphor is mixed and dispersed in a transparent resin such as a silicone resin or an epoxy resin. The phosphor may be formed as a layer containing the phosphor on a light-transmitting resin formed in advance.

  According to a third aspect of the present invention, there is provided a lighting device comprising: a base; a semiconductor light emitting element disposed substantially linearly on the base; and a reflector disposed at an end of the base so as to face the semiconductor light emitting element. It is characterized by comprising.

  The reflector may be formed integrally with the substrate, or may be formed by subjecting a white synthetic resin such as PBT, aluminum, stainless steel, or the like to a mirror or semi-mirror surface process. .

  According to a fourth aspect of the present invention, there is provided a lighting device comprising: a base; a semiconductor light emitting element disposed substantially linearly on the base; and an end semiconductor light emitting device disposed at an end of the base with a light emitting surface facing the longitudinal direction of the base And an element.

  For example, an end semiconductor light emitting device that is disposed with a light emitting surface facing a longitudinal direction of the substrate at an end of the substrate has, for example, a chip disposed in the vertical direction and a light emitting surface on the side of the chip facing the edge of the substrate. , Means for introducing light into the end portion are allowed, but it is not necessary to be strictly in the vertical direction, and is appropriately inclined so that light on the light emitting surface of the chip side portion is effectively introduced into the end portion. It may be.

  The invention of a lighting fixture according to claim 5 is characterized by comprising: a fixture body; and the lighting device according to any one of claims 1 to 4 disposed in the fixture body.

  In the present invention, the lighting fixture is preferably a residential ceiling light or the like. However, the lighting fixture is not limited to a residential use, and may be a lighting fixture for a facility or business such as a store or office. The shape can be a line shape such as a sink lamp, a foot lamp, or a staircase lamp, a round shape such as a circle or an ellipse, a square shape such as a square or rectangle, and a polygon such as a hexagon or octagon. However, it is not limited to a specific shape.

  According to the first aspect of the present invention, it is possible to provide an illuminating device capable of reducing the occurrence of a dark portion at the end portion of the device by the light emitting portion for emitting light between the semiconductor light emitting element and the base end portion. it can.

  According to the second aspect of the present invention, the light radiated from the semiconductor light emitting element is introduced to the substrate end portion to emit light by the light transmitting resin that covers the semiconductor light emitting device and is disposed up to the substrate end portion. It is possible to provide an illuminating device capable of reducing the occurrence of dark parts in the part.

  According to the invention described in claim 3, the light emitted from the semiconductor light emitting element is reflected toward the base end by the reflector by the reflector disposed at the base end facing the semiconductor light emitting element, It is possible to provide an illuminating device capable of reducing the occurrence of dark portions at the device end.

  According to the fourth aspect of the present invention, the edge semiconductor light emitting device is arranged with the light emitting surface facing the substrate end in the longitudinal direction of the substrate, and the light is emitted to the end with the light emitting surface of the chip facing the substrate end. It is possible to provide an illuminating device that can be introduced to reduce the occurrence of dark portions at the end of the device.

  According to the fifth aspect of the present invention, it is possible to provide a lighting device with high uniformity by reducing luminance unevenness by providing a light source unit with a lighting device capable of reducing the occurrence of dark portions at the end of the device. it can

  Hereinafter, an embodiment of a lighting device according to the present invention and a lighting fixture using the lighting device will be described.

  As shown in FIG. 1, the illumination device 10 of the present embodiment includes a base 11, a semiconductor light emitting element 12 disposed substantially linearly on the base, and light emission for emitting light between the semiconductor light emitting element and the end of the base. The unit 13 is configured.

  The base 11 is composed of a case member 11a and a circuit board 11b. The case member 11a is made of aluminum having good thermal conductivity, and has a U-shaped cross section in order to obtain a light emitting area required for the lighting device. The long groove 11c is formed in a thin line shape, and the inner surface of the groove is formed as a reflecting surface, and a white paint having a high visible light reflectance is applied to the surface. The circuit board 11b is composed of a long printed wiring board.

  The semiconductor light emitting element 12 is composed of a light emitting diode (hereinafter referred to as “LED”), and the LED 12 emits white light by the same color, in this embodiment, a blue LED chip and a yellow phosphor excited by the blue LED chip. It consists of a plurality of high-brightness and high-power LEDs, and each LED has the same kind of performance that mainly emits light in one direction, that is, the optical axis direction of the LED. The plurality of LEDs 12 are mounted on the long circuit board 11b at equal intervals. The circuit board on which the LED is mounted is attached to the inner bottom surface of the groove 11c of the line-shaped board via a heat radiation sheet or grease having good thermal conductivity.

  Further, the phosphor layer 14 constituting the light-transmitting resin of the present invention is filled in the concave groove 11c of the base body in which the LED 12 is accommodated. That is, this filling is formed as a layer covering the outside of each LED 12 and adding and mixing and dispersing a predetermined phosphor in a transparent resin such as a silicone resin or an epoxy resin. As shown in FIG. 1, the phosphor layer is filled so as to reach both end portions 11d and 11d of the base, and light emitted from each LED, particularly the LED 12a located at the end portion, is made of a fluorescent resin. A light emitting portion 13 is formed which is introduced into the body layer 14 and emits light from both end portions 11d and 11d. In addition, LED12 consists of a blue LED chip, and the fluorescent substance layer 14 is comprised with the yellow fluorescent substance excited by this blue LED chip.

  The base body 11 configured by arranging the respective LEDs 12 as described above is fitted into and closely attached to a concave portion of a base 11e made of aluminum as a heat sink, and is fixed by a bolt 11f. As a result, a lighting device 10 composed of a linear light-emitting module having a linear length of about 100 mm in which a plurality of LEDs 12 are arranged at equal intervals is formed, and the necessary number of lighting devices, in this embodiment, five lighting devices. Are connected to form one long lighting device (FIG. 3B).

  When the long illuminating device 10 configured as described above is turned on, the LED 12 of each illuminating device emits light, and the light emitted from the blue LED chip is reflected by the reflecting surface formed in the concave groove 11c of the base 11 to cause yellow fluorescence. Radiated through the body layer 14. At this time, since both end portions 11d and 11d of the substrate are filled with the phosphor layer 14, light emitted from each LED, particularly the LED 12a located at the end portion, enters the phosphor layer 14 made of a transparent resin. When introduced, the light emitting sections 13 at both ends of the base emit light. Thereby, the dark part by the joint (joint) which connected the some illuminating device 10 is not formed, but there is no brightness nonuniformity in a longitudinal direction, and light with high uniformity is radiated | emitted.

  The illumination device having the above configuration constitutes a light source body by incorporating a light control member such as a lens body, and is used as a light source body of various lighting fixtures. Next, the structure of the lighting fixture which consists of a ceiling light for houses using the said illuminating device as a light source body is demonstrated according to FIGS. First, the configuration of a light source body incorporating a lens body will be described.

  As shown in FIGS. 2 to 3, the light source body 20 includes the illumination device 10 having the above-described configuration, a light guide 21 provided on the illumination device with an incident surface facing the light source 21, and a lens provided facing the emission surface of the light guide. It consists of a body 22.

  The light guide 21 is composed of a light guide plate formed of a synthetic resin such as a transparent acrylic resin having a rectangular cross section in which a light incident surface 21a is formed on one end surface and an output surface 21b is formed on the other end surface. The incident surface 21a of the light guide is formed in a flat shape, and the flat surface is mounted so as to face the concave groove 11c of the base of the lighting device 10 so that light does not leak. At this time, the LED 12 is mounted so that the light emission center x is positioned at the center of the light incident surface 21a.

  The lens body 22 is configured by a collimator lens that exits the lens from the focused light as non-aberration parallel light. The collimator lens 22 has a long and smooth entrance surface 22a, an exit surface 22b having a substantially elliptical cross section with the first focal point a at the center of the entrance surface, and a cross-sectional triangle formed by cutting out the upper and lower portions of the entrance surface. The concave portions 22c and 22c having a shape and support portions 22d and 22d integrally formed on both sides of the concave portion are integrally formed. The collimator lens is disposed to face the light exit surface 21 b of the light guide 21. That is, the exit surface 21b of the light guide is formed in a flat shape, and the flat surface is closely attached to the entrance surface 22a of the collimator lens so that light does not leak. At this time, the emission center b of the exit surface 21b of the light guide 21 coincides with the center of the entrance surface 21a. In other words, the light emission center x of each LED 12 is offset from the first focal point a of the collimator lens 22 by a predetermined dimension c, and is lower in FIG. 2 (upward in FIG. 3A). When constructing a lighting fixture to be mounted, it is mounted so as to be offset from the glove side. Furthermore, the collimator lens 22 is attached and supported by the bolt 22e on the light emitting surface side of the base 11e which is the heat sink of the lighting device 10 using the support portions 22d and 22d, and the light source body 20 is configured.

The collimator lens 22 is disposed so as to cover all of the five illumination devices 10 (total length: about 500 mm) having a length of about 100 mm with a single long collimator lens having a length of about 500 mm. Constitute. (Fig. 3 (b))
Next, the structure of the lighting fixture 30 which consists of the ceiling light for houses using the light source body 20 comprised above is demonstrated according to FIGS.

  The lighting fixture 30 includes a fixture main body 31, two light source bodies 20 having the above-described configuration, a reflector 32, and a globe 33.

  The instrument body 31 is configured as a chassis with a white coating on a metal such as an iron plate, and a square with a side of approximately 500 mm. The chassis main body 31 is detachable from a hook ceiling installed on the instrument mounting surface such as the ceiling at the approximate center of the chassis. An adapter 34 is provided. Further, a lighting device 35 for lighting the lighting device 10 is attached to the space around the adapter, and an installation portion 38 for installing the light source body 20 using the lighting device 10 on the outer edge portions 36 and 37 of the opposite sides, 39 is provided. In the figure, reference numeral 40 denotes a remote control light receiving unit.

  Two light source bodies 20 are prepared, one for each of the installation portions 38 and 39 provided on the outer edge portions 36 and 37 of the opposite sides of the device main body 31 so that each LED 12 of the lighting device 10 faces each other. Arranged at the outer edge of the main body 31. That is, a support plate 41 integrally formed from the chassis is erected on each installation portion 38, 39 of the instrument main body 31, and the base 11e of each light source body 20 is attached to and supported by the support plate (FIG. 4B). )).

  At this time, as shown in FIG. 2A, the light emission center x of the LED 11 in each illumination device 10, that is, the center point b of the emission surface 21 b of the light guide 21 is predetermined with respect to the first focal point a of the collimator lens 22. Is attached eccentrically to the glove 33 side (downward in FIG. 2A) by the dimension c.

  The reflector 32 has a flat plate shape in which a metal such as an iron plate is coated with white paint, both ends are opposed to the LEDs 12 in the two light source bodies 20, and from an intermediate portion toward a substantially central portion of the instrument body. An inclined portion 32a that is continuously inclined gradually is formed. The reflector is fixed to a substantially central portion of the chassis constituting the instrument body 31 by means such as screws or spot welding.

  The globe 33 is made of translucent milky white translucent synthetic resin and has a light emitting portion 33a having a shallow dish-like spherical shape and an outer peripheral portion at portions corresponding to the outer edge portions 36 and 37 of the instrument body 31. The opening 33b formed by opening the remaining upper surface is integrally formed, and is attached so as to cover the entire lower surface of the instrument body 31 so as to cover the light source body 20 and the reflector 32 by covering from below the instrument body. It is done. The globe 33 is detachably attached to the outer edge portion of the instrument main body by means of a known uneven engagement means, a mounting bracket or the like.

  The luminaire 30 including the ceiling light configured as described above is electrically connected by engaging the adapter 34 with a hook ceiling provided on a fixture mounting surface such as a ceiling, and engaging the adapter with the fixture body. At the same time as being connected to the power source, it is mechanically supported and installed (FIG. 4 (a)).

  If the lighting fixture 30 installed above is lighted, LED12 of each illuminating device 10 which comprises the two light source bodies 20 will light-emit. At this time, since both end portions 11d and 11d of the base 11 of each lighting device 10 are filled with the phosphor layer 14, each light emitting portion 13 is positioned adjacent to the connecting portion where the lighting devices are connected to emit light. Therefore, no dark part is formed. As a result, the illumination device 10 emits a light beam having no luminance unevenness in the longitudinal direction and high uniformity.

  The light emitted from the illumination device 10 is introduced into the light guide from the incident surface 21a of the light guide 21 constituting the light source body 20, and the blue light and the yellow phosphor emitted from the blue LED chip in the light guide. The yellow light emitted from the light is mixed into white light and emitted from the emission surface. The emitted white light is introduced from the first focal point a of the collimator lens 22, and the light emitted from the first focal point a becomes parallel light with no aberration and is emitted upward from the emission surface 23 b having a substantially elliptical cross section. The

  The light radiated from the collimator lens 22 is radiated toward the inclined portion 32a of the reflector 32 in the lighting fixture, and the light reflected by the reflector irradiates the globe 33 from the inner surface side, so that the brightness is substantially uniform throughout the room. Now illuminate.

  At this time, the two light source bodies 20 are respectively disposed on the outer edge portions 36 and 37 of the instrument main body 31, and the ring-shaped fluorescent lamp does not exist in the central part of the instrument main body as in the prior art. For this reason, a lamp image does not appear in the irradiation center part of a glove, but a uniformity improves.

  As described above, according to the illuminating device 10 of the present embodiment, the phosphor layers 14 are filled in the both end portions 11d and 11d of the base 11 of each illuminating device 10, so Since the portions 13 are located next to each other and emit light, no dark portion is formed. Thereby, there is no uneven brightness in the longitudinal direction, and light with high uniformity can be emitted. Furthermore, since one long collimator lens 22 covers the connecting portions of the five illumination devices 10 having a length of about 100 mm, the collimator lens 22 emits uniform light with no further unevenness in luminance.

  In addition, according to the light source body 20 of the present embodiment, since the above-described illumination device 10 is incorporated, it is possible to emit a light beam with high uniformity and no luminance unevenness in the longitudinal direction, and the focus a of the collimator lens 22 is emitted The light becomes non-aberration parallel light and can be used efficiently by irradiating the light forward without waste. Further, since the light emission center x of each LED 1 is offset from the first focal point a of the collimator lens 22 by a predetermined dimension c, the light is not diffused but concentrated in the required direction (upward in FIG. 3A). Can be emitted, and light in a useless direction is suppressed. At the same time, the blue light emitted from the blue LED chip and the yellow light emitted from the yellow phosphor in the light guide 21 are mixed to form white light, and light with no color unevenness is emitted through the collimator lens 22. Is done.

  Moreover, according to the lighting fixture 30 of the present embodiment, since the light source body 20 is incorporated, the light source body emits a light beam with high uniformity without luminance unevenness in the longitudinal direction, and the light is diffused. It is possible to easily and surely obtain a desired degree of uniformity by efficiently using light by irradiating the entire front reflector 32 without being concentrated and irradiating the entire inner surface of the globe 33 without waste. Can do. And since it can carry out without changing the transmittance | permeability of the globe 33, a high degree of uniformity can be obtained by a simpler means. At the same time, illumination can be performed with white light having no color unevenness.

  Further, in the illumination device 10 of the present embodiment, the case member 11a of the base body 11 on which the plurality of LEDs 12 are arranged is configured in a thin box shape having a long concave groove 11c having a U-shaped cross section. The strength of the substrate can be improved, and the warping of the substrate can be prevented. Incidentally, since this type of substrate is usually composed of two flat plates having different coefficients of thermal expansion, such as a synthetic resin such as aluminum and an epoxy resin, the substrate is warped due to the difference in coefficient of thermal expansion. This phenomenon causes mounting failure when the temperature of the bare chip mounting rises, the optical axis shifts when the instrument is set, the substrate is warped due to the temperature rise during lighting, the wire is broken, and the adhesion to the substrate 11e which is a heat sink is poor. As a result, the heat dissipation characteristics of the LED deteriorate.

  Furthermore, since the case member 11a of the base body of the present embodiment is formed with a long groove 11b having a U-shaped cross section, the side surface of the groove can be used as a reflecting surface, and the light of the LED can be used effectively. be able to. At the same time, the heat dissipating area is widened, and the LED can efficiently dissipate heat. Furthermore, positioning to the heater block can be easily performed at the time of mounting, which facilitates mounting work.

  As described above, in the lighting device of the present embodiment, the phosphor layer 14 is filled in the end portion of the base 11, and the light emitted from each LED 12, particularly the LED 12a located at the end portion, is inside the phosphor layer 14 made of a transparent resin. The LED 12a located at the end or the LED in the vicinity of the end is made to have a higher light output than the other LEDs to emit light more brightly and more reliably generate dark parts. You may make it cancel.

  Although the light-transmitting resin is composed of the phosphor layer 14, it may be composed of an electrically insulating layer made of a transparent resin for covering the charging portion of the LED instead of the phosphor layer.

  The case member 11a of the base body 11 is formed with a long concave groove 11b having a U-shaped cross section, but may be formed so that the cross section is convex toward the collimator lens 22 as shown in FIG.

  The light guide body 21 of the light source body 20 may be formed integrally with the collimator lens 22. The shape of the light guide may be a wedge shape or a shape in which the area of the exit surface is smaller than the area of the entrance surface, for example, the apex of the quadrangular pyramid is a flat surface.

  The lighting fixture 30 is a square lighting fixture and two light source bodies 20 are arranged on the outer edge portions 36 and 37 facing each other. However, a total of four light source bodies may be arranged, one on each of the four sides. Good. Further, a plurality of light source bodies 20 may be connected to one side to constitute a line-shaped lighting fixture such as a sink lamp, a foot lamp, and a staircase embedded lamp. Furthermore, a round illuminating device may be configured, and the light source may be configured by connecting the illuminating devices in a ring shape, and may be disposed over the entire periphery of the outer edge of the device main body. Although the lighting fixture is configured as a pendant type ceiling light, it may be configured as a ceiling-mounted ceiling light, or may be configured as various types of lighting fixtures for stores, offices, and business facilities.

  In the present embodiment, a reflector is provided at the end of the base so as to face the semiconductor light emitting element, and the light emitted from the semiconductor light emitting element is reflected toward the end of the base by the reflector to emit light at the end. Is configured.

  The configuration will be described below with reference to FIGS. 7 to 8, the same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the base 11 is formed of a thin line-shaped case member having a long concave groove 11c having a U-shaped cross section as in the first embodiment, and both end portions 11d and 11d of the base are formed. That is, the reflector 50 is disposed at both ends of the concave groove 11c.

  The reflector 50 is formed as a small piece of a triangular prism made of aluminum and having a triangular cross section. The reflector 50 is formed with an inclined reflecting surface 50a facing the LED 12a located on the end side, and the back surface 50b is connected to the end surface of the case member. The apex 50c is flush with the upper surface of the case member 11a and in contact with the end 11d, and the bottom surface 50d is in contact with the inner bottom surface of the concave groove 11c and fixed with a heat-resistant adhesive such as silicone resin. Further, the light emitting portions 13 and 13 are configured by filling the phosphor layer 14 so as to reach both end portions.

  When the lighting device 10 configured as described above is turned on, each LED emits light, and the light of the LED 12a located at both ends is emitted toward the reflecting surface 50a of the reflector 50 via the phosphor layer 14, and reflected by the reflecting surface. Then, the light is emitted toward the light emitting portion of the substrate 11 (upward in FIG. 7B). As a result, the light emitting portions 13 and 13 of the both end portions 11d and 11d of the base body emit light and do not darken and no dark portion is formed.

  Also, as shown in FIG. 7D, even when a plurality of lighting devices 10 are connected, the reflector 50 has the back surface 50b flush with the end surface of the case member 11a, and the vertex 50c faces the top surface of the case member 11a. Since they are formed in one, the back surfaces 50b and the apexes 50c of the adjacent reflectors 50 and 50 are connected and connected by a thin line without forming a gap, so that they are not noticeable, and a joint (joint) for connection It is difficult to form a dark part due to.

  In this embodiment, as shown in FIGS. 8A and 8B, the phosphor layer 14 is formed in a space without filling the reflector 50 that does not require electrical insulation so as to reduce the material cost. It may be.

  Further, as shown in FIG. 9A, the vertex 50c of the reflector 50 is not flush with the upper surface of the case member 11a, the vertex 50c is formed lower by the dimension x, and the phosphor layer 14 is formed as the vertex of the reflector 50. It may be filled up to 50c, in other words, to reach the end. As a result, when a plurality of lighting devices are connected, the connecting portion of the vertex 50c of the reflector 50 is covered with the phosphor layer 14 so that the joint of the connecting portion becomes less conspicuous, and the dark portion due to the joint can be further eliminated.

  As shown in FIG. 9B, both side wall portions of the concave groove 11c in the case member 11a are also formed as reflecting surfaces 11g inclined toward the LED 12, and a “mortar-shaped” reflector is formed together with the reflectors 50 at both ends. You may make it comprise and reflect the light of LED efficiently.

  The reflector 50 may be formed integrally with the case member 11a constituting the base. Moreover, you may comprise with white synthetic resins, such as PBT.

  Other configurations, operations, operational effects, modifications, and the like in this embodiment are the same as those in the first embodiment.

  In this embodiment, the LED itself constitutes the light emitting portion 13, and the LED 12a located at the base end portions 11d and 11d is arranged with the light emitting surface of the chip facing in the longitudinal direction of the base, and directly from the light emitting surface of the chip. The light emitting section 13 is configured to introduce light toward the end of the base and emit light.

  The configuration will be described below with reference to FIG. In FIG. 10, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 10, the base 11 is constituted by a case member 11 a having a thin line shape in which a long groove 11 c having a U-shaped cross section is formed as in the first and second embodiments.

  Of the LEDs 12, the end LED 12 a located on the both ends 11 d and 11 d side of the base is opposed to the light emitting surface 12 b of the chip in the longitudinal direction of the base, in other words, the chip is vertically arranged and the light emitting surface of the chip 12b is mounted on the circuit board 11b toward the end 11d side of the substrate, and the phosphor layer 14 is filled so as to reach both ends as in the first embodiment.

  When the lighting device 10 configured as described above is turned on, light directly emitted from the light emitting surfaces 12b of the end LEDs 12a located at both ends arranged in the vertical direction is introduced into the phosphor layer 14 and the light emitting portions 13 at both ends. , 13 emits light and does not darken and no dark part is formed. At this time, the end LED 12a emits light more brightly because the light emitting surface 12b of the chip is directed to the end 11d. Accordingly, even when a plurality of lighting devices are connected, the light emitting portions 13 and 13 at both ends of each adjacent lighting device emit light, and a dark portion due to a joint (joint) for connection is not formed.

  In this embodiment, as shown in FIG. 10, the distance dimension y between the edge LED 12 a and the adjacent LED 12 is smaller than the mounting distance dimension z between the other LEDs 12, so that the light of the edge LED 12 a is reflected. In addition, the light of the adjacent LED 12 can be taken into the end portion 11d, and light can be emitted more brightly. Further, as shown in the figure, if the reflector 50 of Example 2 is incorporated, light can be emitted even more brightly.

  The LED 12 has one end LED 12a positioned at each of the base end portions 11d and 11d in the vertical direction, but may be configured such that several adjacent LEDs are also arranged in the vertical direction.

  Other configurations, operations, operational effects, modifications, and the like in the present embodiment are the same as those in the first and second embodiments.

  In this embodiment, the phosphor layer is filled up to the end of the base, and the end of the base is formed in a key-shaped cross section so that the end emits light and at the same time secures a distance for electrical insulation. It is comprised as follows.

  Hereinafter, the configuration will be described with reference to FIGS. 11 to 12, the same parts as those in the first embodiment, the second embodiment, and the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 11 (a), the base body 11 is formed with a thick base portion constituting the bottom surface of the case member 11a, and the cross-sectional shape taken along a vertical plane parallel to the longitudinal direction has an L-shape. The fitting part 51 to be formed is formed. The fitting part is one end, the left side in FIG. 11 (a) is L-shaped, the other end, the right side in FIG. It is formed into a size and shape that constitutes a single substrate. As a result, the creepage distance between the LED and the bottom surface side of the case member 11a in which the power supply circuit components and the like are accommodated can be increased, and an electrical insulation distance can be ensured.

  At the same time, as shown in FIG. 11 (b), even when a plurality of lighting devices are connected, the joint (joint) of the connecting portion can be made into a mere thin line so as to be inconspicuous, and a dark portion due to the joint is hardly generated. be able to.

  Further, as shown in FIG. 11 (b), adjacent power bases 52 are electrically connected to each other by forming power supply portions 52 at portions overlapping and overlapping each other in an L-shaped key shape. You may comprise as follows. This eliminates the need for wiring on the surface side of the substrate, and the entire substrate can be made compact.

  As shown in FIG. 12A, the L-shaped key shape may be formed in a wedge-shaped portion 53 formed by inclining overlapping portions. Further, as shown in FIG. 5B, the concavo-convex portion 54 may be formed. With these configurations, the creepage distance can be increased.

  The phosphor layer 14 is filled up to the end portion 11d of the substrate 11 in the same manner as in the first embodiment to emit light. However, the reflector 50 in the second embodiment may be arranged to emit light. Further, as in the third embodiment, the end LEDs 12a may be arranged in the vertical direction to emit light.

  Other configurations, operations, operational effects, modifications, and the like in the present embodiment are the same as those in the first and second embodiments.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments. For example, the lighting device is configured by adopting all the configurations described in the above-described embodiments. However, various design changes can be made without departing from the gist of the present invention, for example, by appropriately selecting each configuration to configure a lighting device to be combined.

The illuminating device which concerns on 1st embodiment of this invention is shown, (a) is a front view, (b) is sectional drawing which follows the AA line in (a), (c) is BB in (a). Sectional drawing. The light source body which similarly used the illuminating device is shown, (a) is a perspective view which cuts off a part and shows it, and (b) is sectional drawing which expands and shows a base | substrate part. The light source body is also shown, (a) is a side sectional view for explaining optical characteristics, and (b) is a front view showing a state in which an illumination device is connected. The lighting fixture which similarly used the light source body is shown, (a) is a longitudinal cross-sectional view, (b) is sectional drawing which expands and shows the outer edge part of a fixture main body. The top view which shows the state which removed the glove of the lighting fixture similarly. The perspective view which cuts and shows a part which shows the modification of the light source body which concerns on 1st embodiment similarly. The illuminating device which concerns on 2nd embodiment of this invention is shown, (a) is a front view, (b) is sectional drawing which follows the CC line in (a), (c) is A part of (b). Sectional drawing which expands and shows, (d) is sectional drawing which shows a connection part. Similarly, the modification of the illuminating device which concerns on 2nd embodiment is shown, (a) is a front view which shows a 1st modification, (b) is sectional drawing which follows the DD line in (a). Similarly, the modification of the illuminating device which concerns on 2nd embodiment is shown, (a) is sectional drawing which shows the connection part of a 2nd modification, (b) is a front view which shows a 3rd modification. Sectional drawing which shows the illuminating device which concerns on 3rd embodiment of this invention. The illuminating device which concerns on 4th embodiment of this invention is shown, (a) is sectional drawing, (b) is sectional drawing which shows a connection part. Similarly, the modification of the illuminating device which concerns on 4th embodiment is shown, (a) is sectional drawing which shows the connection part of a 1st modification, (b) is sectional drawing which shows the connection part of a 2nd modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Base | substrate 12 Semiconductor light emitting element 13 Light emission part 20 Light source body 30 Lighting fixture

Claims (5)

A substrate;
A semiconductor light emitting device disposed substantially linearly on the substrate;
A light emitting portion for emitting light between the semiconductor light emitting element and the end of the substrate;
An illumination device comprising: A substrate;
A semiconductor light emitting device disposed substantially linearly on the substrate;
A light-transmitting resin that covers the semiconductor light-emitting element and is disposed up to the end of the substrate;
An illumination device comprising: A substrate;
A semiconductor light emitting device disposed substantially linearly on the substrate;
A reflector disposed at the end of the substrate facing the semiconductor light emitting element;
An illumination device comprising: A substrate;
A semiconductor light emitting device disposed substantially linearly on the substrate;
An end semiconductor light-emitting element disposed with the light emitting surface facing the end of the base in the longitudinal direction of the base;
An illumination device comprising: An instrument body;
A lighting fixture comprising: the lighting device according to any one of claims 1 to 4 disposed in a fixture main body.

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