JP5361841B2 - LIGHT EMITTING DEVICE, LIGHTING DEVICE, AND COLOR CONVERTER - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting device which can easily change emitting color and has hardly any coloring of giving a sense of incompatibility in the device appearance, and in which a color conversion member can be attached and detached easily from the outside. <P>SOLUTION: A color conversion member 15 is incorporated removably in a reflector support base 13 so that its incidence face 55 may be opposed to a light emitting face 51 of an LED package 11. A reflector 14 is installed removably in the reflector support base 13 so that its incidence opening 52 may be opposed to an outgoing face 56 of the color conversion member 15. To be more concrete, the reflector 14 is installed in the reflector support base 13 so that the incidence opening 52 may be opposed to an opening part 17 of the reflector support base 13 separated from the color conversion member 15. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a light emitting device, a lighting device, and a color converter. In particular, the present invention relates to a light-emitting device applicable to a lighting fixture or a display fixture using a light-emitting diode (LED; Light Emitting Diode).

  Many color variable devices using LEDs have been proposed so far. For example, a configuration with three single-color RGB LEDs, or a configuration in which a green LED or a red LED is added to a white LED (a configuration in which a blue LED and a yellow phosphor that emits light is excited). Have been proposed to make the color variable by electrically dimming and controlling the light.

  On the other hand, unlike such an electrical color changing method, a configuration in which a color conversion member can be replaced from the outside and light color conversion is relatively easy has been proposed (see, for example, Patent Documents 1 to 3). In Patent Document 1, for the purpose of changing the light color of a bullet-type LED using an LED chip, a cap made of a phosphor-containing resin material is attached so as to cover the surface, and the cap can be replaced. The device is shown. In Patent Document 2, a light emitting element such as an LED chip is mounted on a mounting substrate, and a surface member or a surface lens is provided with a fluorescent member that is excited by light emission from the light emitting element and emits light having a wavelength different from the wavelength of the light emitting element. A light emitting device is shown. In this light-emitting device, the fluorescent member can be replaced, and when the device performance deteriorates due to deterioration of the fluorescent member, the life of the device performance can be extended by replacing the fluorescent member with an undegraded new one. Yes. Patent Document 3 discloses that a phosphor sheet can be detachably attached to the surface of an LED sealing member and can be exchanged as necessary, thereby improving the yield of the light emitting module of the lighting device.

  Further, although not intended for color adjustment, a light source device has been proposed in which a reflector portion is detachable (see, for example, Patent Document 4). Patent Document 4 discloses a light source device having a configuration in which only a reflector portion can be attached and detached. In this light source device, the reflector portion is divided into a first reflection cup and a second reflection cup, and only the second reflection cup can be replaced, and the base of the reflector portion is kept fixed.

Japanese Patent Laid-Open No. 9-27642 JP 2003-110146 A JP 2009-60094 A JP 2005-175389 A

  Apparatus for electrically toned as described above, inevitably complex control circuitry to achieve the desired color in the dimming of each LED is essential, there is a problem that becomes expensive. In addition, since the colors are mixed by dimming the LEDs arranged next to each other, there is a problem of color mixing that is easy to spatially separate colors. Furthermore, since a plurality of types of LEDs are used, the number of parts is increased, and there is a problem that a considerable burden is imposed on the variation management. Considering these points, when there is no need to change the color in time series, the configuration that allows the replacement of the external color conversion member as in Patent Document 1 is useful as an inexpensive and simple replacement. It is.

  However, in recent years, there is an increasing need for large luminous flux for lighting applications and the like, and it is not uncommon for such devices to use tens to hundreds of LEDs per device. When the purpose is to obtain such a large luminous flux light emitting device, the color conversion method by attaching and detaching the cap as in Patent Document 1 has to replace caps individually for all the LEDs in the device, resulting in poor workability. There is a problem. Further, in recent light emitting devices, for the purpose of light distribution control, for example, there are many configurations having a reflector around each LED light source, for example. Replacing the fluorescent cap for all light sources in such a device becomes even more difficult because the reflector gets in the way.

  Therefore, for example, as in Patent Document 2, it is possible to attach a color conversion member having the same function as the fluorescent cap from the outside of the reflector (here, the fluorescent member is arranged so as to cover the reflector). However, since the fluorescent member usually has a color unique to the material, when used in a lighting device or the like, an unnatural color appears on the entire surface of the device under normal natural light or an artificial lighting environment, particularly when the light is turned off. This often causes a loss of the aesthetics of the device itself and the architectural space using it. In particular, if the phosphor contained in the fluorescent member is a blue excitation phosphor, it is excited even in the visible light region, and therefore, for example, red, orange, yellow, and green coloration are observed on the surface of the apparatus.

  In patent document 2 and patent document 3, the structure which arrange | positions a color conversion member in the forefront of a light-emitting device is employ | adopted. In any case, the light distribution control by the reflector on the light emission side is not performed, but the color conversion region arranged in the foreground has a considerably large area with respect to the LED light source, so that the fluorescent member (color conversion member) is colored. As a result, it gives a sense of incongruity in the usage space.

  An object of the present invention is to provide, for example, a light emitting device that can easily change a light emission color, has almost no unnatural color on the appearance of the device, and can easily attach and detach a color conversion member from the outside.

A light emitting device according to one embodiment of the present invention includes:
A light source that emits light from the light emitting surface;
An apparatus main body on which the light source is disposed;
A color conversion member that enters light from an incident surface, converts the color of the light, and emits the light from an exit surface;
A reflector that emits light from an incident port, reflects the light from the inner surface, and exits from the exit port;
The color conversion member is detachably incorporated in the apparatus main body so that the incident surface faces the light emitting surface of the light source,
The reflector is detachably attached to the apparatus main body so that the entrance is opposed to the exit surface of the color conversion member.

  According to one aspect of the present invention, since the color conversion member is detachable in the light emitting device, the emission color can be easily changed. Moreover, since the color conversion member is incorporated between the light source and the reflector, it is possible to suppress coloring that is uncomfortable in the appearance of the apparatus. Furthermore, since the reflector can be removed, the color conversion member can be easily taken in and out from the outside.

(A) It is a bottom view of the light-emitting device which concerns on Embodiment 1, (b) It is AA sectional drawing. (A) The figure which shows an example of the structure of an LED package, (b) The BB sectional drawing of the light-emitting device which concerns on Embodiment 1, The figure which shows the state which isolate | separated the reflector and the reflector support stand in (c) and (b) (D) It is a figure which shows the state which does not mount a color conversion member by (b). (A) It is the elements on larger scale of the area | region C of the light-emitting device which concerns on Embodiment 1, (b) It is a figure which shows the state which removed the reflector and the color conversion member in (a). 6 is an exploded perspective view of a light emitting device according to Embodiment 2. FIG. (A) It is a bottom view of the light-emitting device which concerns on Embodiment 2, (b) Side view, (c) Top view, (d) DD sectional drawing. (A) BB sectional view of the light emitting device according to Embodiment 3, (b) AA sectional view (part), (c) BB sectional view of the light emitting device according to Embodiment 4, d) It is BB sectional drawing of the light-emitting device which concerns on Embodiment 5. FIG. (A) Cross-sectional view and bottom view of light-emitting device according to Embodiment 6, (b) Cross-sectional view and bottom view of light-emitting device according to Embodiment 7, (c) Cross-sectional view of light-emitting device according to Embodiment 8. FIG. (A) The bottom view of the illuminating device which concerns on Embodiment 9, (b) EE sectional drawing, (c) The bottom view of the illuminating device which concerns on Embodiment 10. FIG. (A) Cross-sectional view of the light emitting device according to the eleventh embodiment in the short direction, (b) exploded perspective view (part), (c) exploded perspective view of the light emitting device according to the first modification of the eleventh embodiment. (Part), (d) is an exploded perspective view (part) of a light-emitting device according to a second modification of the eleventh embodiment. (A) It is a disassembled perspective view of the light-emitting device concerning Embodiment 12, (b) It is sectional drawing of a transversal direction. (A) It is a disassembled perspective view of the light-emitting device concerning Embodiment 12, (b) It is sectional drawing of a transversal direction. (A) It is a disassembled perspective view of the light-emitting device concerning Embodiment 12, (b) It is sectional drawing of a transversal direction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1A is a bottom view of the light emitting device 10 according to the present embodiment. FIG.1 (b) is AA sectional drawing of Fig.1 (a).

  The light emitting device 10 includes a plurality of LED packages 11, a substrate 12, a reflector support base 13, a reflector 14, a color conversion member 15, and a surface cover 16. The board | substrate 12 and the reflector support stand 13 comprise an apparatus main body. Here, although the planar shape and the side surface shape are rectangular as an example of the light emitting device 10, other shapes may be adopted. In addition, an example of the light emitting device 10 is used for ceiling lighting or the like and emits light downward, but the usage of the light emitting device 10, the light emitting direction, and the like are arbitrary. Moreover, although the thing provided with ten LED packages 11 is shown as an example of the light-emitting device 10, the light-emitting device 10 may be provided with only one LED package 11 or a plurality other than ten.

  FIG. 2A is a diagram (side view) showing an example of the structure of the LED package 11. FIG. 2B is a BB cross-sectional view of FIG. FIG. 2C is a cross-sectional view similar to FIG. 2B, but shows a state where the reflector 14 and the reflector support 13 are separated. FIG. 2D is also a cross-sectional view similar to FIG. 2B, but shows a state where the color conversion member 15 is not attached.

  The LED package 11 is an example of a light source, and emits light from the light emitting surface 51. The LED package 11 may be replaced with another type of light source that similarly emits light. For example, as shown in FIG. 2A, the LED package 11 includes an LED chip 81, an LED package housing 82, a sealing resin 83, and electrode terminals 84. In FIG. 2A, a die bond material, a wire bond material, and the like are omitted for simplification. The LED chip 81 is mounted on the LED package housing 82 and emits light. The LED package housing 82 is formed of a material having heat resistance or heat dissipation, such as resin, ceramic, or metal. The sealing resin 83 is formed of, for example, epoxy or silicone mixed with a phosphor, and changes the color of light emitted from the LED chip 81 to a desired color. For example, assuming that the emission color of the LED chip 81 is blue, this is changed to white. The electrode terminal 84 is a terminal for driving the LED chip 81. In FIG. 2A, the lower surface of the sealing resin 83 corresponds to the light emitting surface 51 of the LED package 11.

  The LED package 11 is disposed in the apparatus main body. Specifically, a plurality of LED packages 11 are mounted on the substrate 12. Although not shown, a conductive pattern for supplying power to the LED package 11 from the outside is formed on the substrate 12. As the substrate 12, for example, an inexpensive glass epoxy substrate can be used. When the high-power LED package 11 is used, aluminum having a surface insulation (that is, an insulating film formed on the surface), a ceramic base metal substrate, or the like can be used.

  The reflector support 13 is an example of a housing and covers and fixes the substrate 12. As shown in FIG. 2C, the reflector support base 13 has an opening 17 surrounding the LED package 11 at a position corresponding to the position where the LED package 11 is disposed on the substrate 12.

  The reflector 14 receives light from the incident port 52, reflects the light at the inner side surface 53, and emits the light from the output port 54. That is, the reflector 14 controls light distribution. In FIG. 2C, the upper opening in the tapered space of the reflector 14 corresponds to the entrance 52 and the lower opening corresponds to the exit 54. Here, the shape of the opening portion of the reflector 14 (the space formed in the tapered shape of the reflector 14) is a substantially quadrangular frustum shape. However, the shape is not limited to this, and may be a substantially frustum shape, for example. I do not care.

  The color conversion member 15 receives light from the incident surface 55 and converts the color of the light. Then, the color conversion member 15 emits the light whose color has been converted from the emission surface 56. In FIG. 2C, the upper surface of the color conversion member 15 corresponds to the incident surface 55, and the lower surface corresponds to the emission surface 56.

  The color conversion member 15 is detachably incorporated in the reflector support base 13 so that the incident surface 55 faces the light emitting surface 51 of the LED package 11. The reflector 14 is detachably attached to the reflector support base 13 so that the entrance 52 faces the emission surface 56 of the color conversion member 15. Specifically, the reflector 14 is detachably attached to the reflector support base 13 so that the entrance 52 is opposed to the opening 17 of the reflector support base 13 with the color conversion member 15 interposed therebetween. Therefore, in a state where the color conversion member 15 is incorporated in the reflector support base 13 and the reflector 14 is attached to the reflector support base 13, first, light emitted from the light emitting surface 51 of the LED package 11 is incident on the color conversion member 15. Incident on the surface 55. Next, the color of the light incident on the incident surface 55 is converted by the color conversion member 15. Subsequently, the light whose color has been converted is emitted from the emission surface 56 of the color conversion member 15. And the light radiate | emitted from the output surface 56 injects into the entrance 52 of the reflector 14. FIG. Finally, the light incident on the incident port 52 is reflected by the inner side surface 53 of the reflector 14 or directly emitted from the output port 54 of the reflector 14. As described above, in the present embodiment, the light conversion control can be performed by the color conversion member 15 and the light distribution control can be performed by the reflector 14.

  The surface cover 16 is attached to the surface (the exit 54) of the reflector 14 for the purpose of glare suppression and light diffusion, and for the purpose of protecting the light source. The front cover 16 is a flat plate made of a translucent resin material, and is formed of a plate material having fine irregularities for light distribution control on the front surface or the back surface, or a glass material. In the present embodiment, the front cover 16 is not an essential component, but even if the light emitting device 10 includes the front cover 16 as described later, the exchangeability of the color conversion member 15 is not affected.

  As described above, in the present embodiment, the reflector 14 can be removed from the reflector support 13 that is a casing, and therefore the color conversion member 15 can be easily taken in and out (replaced) with respect to the reflector support 13 from the outside. be able to. Moreover, since the color conversion member 15 is replaceable, the emission color of the light emitting device 10 can be easily changed. Furthermore, since the configuration in which the color conversion member 15 is incorporated on the inner side than the reflector 14 is adopted, it is possible to suppress coloring that is uncomfortable in the appearance of the apparatus.

  Here, the reflector 14 can also be considered as a part of the housing. In this case, it can be said that the housing of the light emitting device 10 is not composed of a single component as a whole, but is roughly composed of two housing components, the reflector support 13 and the reflector 14. In the present embodiment, it is assumed that the reflector support base 13 and the reflector 14 which are these two casing parts are made of polycarbonate resin having insulating properties, flame retardancy, and high reflection diffusivity. However, the housing material itself is not limited to this, and may be any material suitable for the use of the light emitting device 10. Therefore, other resin materials or metal materials may be used, or different materials may be used for the reflector support 13 and the reflector 14.

  As described above, the reflector support 13 has the opening 17 in the portion corresponding to the LED package 11. In addition, the reflector support base 13 has a central portion (excluding the opening portion 17) that is higher than the height of the LED package 11 or is flat at the same height, and the entirety is a concave that matches the shape of the reflector 14. It has a shape. Therefore, the position shift at the time of uniting with the reflector 14 can be prevented. The reflector support 13 may be formed so as to fit with the substrate 12 in order to fix the position of the substrate 12.

  The reflector 14 having a light distribution control function is made of a highly reflective material in order to increase the light utilization efficiency. Further, as described above, the reflector 14 is arranged so that the individual LED packages 11 are located in the opening (incident port 52) on the side close to the substrate 12. The inner surface (inner side surface 53) of the reflector 14 needs to have high reflectivity in order to increase the light use efficiency. For this reason, the inner surface of the reflector 14 is made by polishing the surface of a resin material such as the polycarbonate resin having the high reflection diffusivity described above, or a highly reflective substance on the surface of the resin material or metal material. Are attached by plating or vapor deposition (that is, a highly reflective layer is formed on the surface).

  The light emitting device 10 can be used by being incorporated in a lighting fixture installed on a ceiling or the like. In this case, the light emitting direction is downward as shown in FIG. FIG. 2C shows a state before the reflector 14 and the reflector support base 13 are combined (that is, in a separated state) in such a usage pattern. This figure shows a state in which the color conversion member 15 is attached to the light source side opening surface of the reflector 14 (the surface where the incident port 52 is provided) and is attached to the reflector support 13 located above.

  In the present embodiment, the reflector support base 13 is formed in a concave shape in accordance with the shape of the reflector 14. The color conversion member 15 is detachably disposed on the bottom surface of the reflector support base 13 so that the incident surface 55 covers the opening 17 of the reflector support base 13. The reflector 14 is detachably fitted inside the reflector support base 13 so that the entrance 52 thereof faces the opening 17 of the reflector support base 13 across the color conversion member 15. Thus, since the reflector support base 13 and the reflector 14 have shapes that can be fitted, the reflector 14 and the reflector support base 13 can be separated and combined.

  Moreover, in this Embodiment, the attachment convex part 18 for hooking and fixing (fitting fixation) the reflector 14 on the reflector support stand 13 is provided, and conversely, the reflector 14 is provided with the attachment concave part 19. When the reflector support 13 and the reflector 14 are combined, the attachment convex portion 18 and the attachment concave portion 19 are fitted. Thereby, the operation | work which attaches the reflector 14 to the reflector support stand 13 becomes easy. Further, it is possible to prevent the reflector 14 from being easily detached after the reflector support 13 and the reflector 14 are fitted. Here, when separating the reflector 14 from the reflector support base 13, the side where the reflector support base 13 is pushed outward, for example, can be released so that the state where the mounting convex part 18 and the mounting concave part 19 are fitted can be released. Needless to say. Note that the mounting concave portion 19 for fitting and fixing may be provided on the reflector support base 13 side, and the mounting convex portion 18 may be provided on the reflector 14 side (corresponding to Embodiment 2 described later). The attachment convex portion 18 and the attachment concave portion 19 are examples of the convex portion and the concave portion, respectively, and forms other than the combination of the claw and the notch as illustrated may be adopted. Further, the mounting convex portion 18 and the mounting concave portion 19 may be different in size and shape on the left and right. For example, when the reflector 14 is attached to the reflector support 13, one of the two pairs of attachment projections 18 and attachment recesses 19 shown in FIG. The mounting operation is further facilitated by adopting such a configuration that can be fitted.

  Furthermore, in the present embodiment, the reflector 14 includes the insertion convex portion 20 on the surface where the entrance 52 is provided, and the reflector support base 13 has the insertion concave portion 21 on the surface opposite to the surface facing the substrate 12. It has. The reflector 14 is detachably attached to the reflector support base 13 so that the insertion convex part 20 fits into the insertion concave part 21 of the reflector support base 13. In other words, in the present embodiment, the reflector 14 is provided with the insertion convex portion 20 for insertion into the reflector support base 13, and conversely, the reflector support base 13 is provided with the insertion concave portion 21. Thereby, when attaching the reflector 14 to the reflector support stand 13, it becomes easy to position and the reflector support stand 13 and the reflector 14 can be firmly fitted. The insertion convex portion 20 may be provided on the reflector support base 13 side, and the insertion concave portion 21 may be provided on the reflector 14 side. The insertion convex portion 20 and the insertion concave portion 21 are examples of the convex portion and the concave portion, respectively, and forms other than the combination of the projection and the hole as illustrated may be adopted.

  The insertion convex part 20 provided in the reflector 14 is also an example of a positioning part. As described above, in the present embodiment, the LED package 11 is disposed on the apparatus main body (substrate 12) so that the light emitting surface 51 faces downward. In the reflector 14, the color conversion member 15 can be positioned (fixed) by the insertion convex portion 20 in a state where the color conversion member 15 is placed on the upper surface where the entrance 52 is present. Therefore, the color conversion member 15 is mounted on the reflector support base 13 together with the reflector 14 while being placed on the upper surface of the reflector 14 and positioned by the insertion convex portion 20. In addition to the insertion convex portion 20, a positioning portion for positioning the color conversion member 15 may be provided. By providing the positioning portion, the color conversion member 15 can be easily attached even when the light emitting device 10 is installed on the ceiling surface for illumination purposes. For example, in the state shown in FIG. 2D, the reflector 14 is removed in the light emission direction (floor surface direction) shown in FIG. Then, the color conversion member 15 is fixedly arranged on the upper surface of the reflector 14 having the incident port 52, and the reflector 14 is directly fitted to the reflector support base 13 together with the color conversion member 15 as shown in FIG. 2B. Is obtained. Moreover, if the reverse procedure is followed, the color conversion member 15 can be easily removed. In addition, the width of the color conversion member 15 may be widened, and a hole may be provided in a portion corresponding to the insertion convex portion 20. In this case, the color conversion member 15 can be positioned (fixed) in the same manner as described above by inserting the insertion protrusion 20 into the hole of the color conversion member 15.

  When the color conversion member 15 is removed, for example, as shown in FIG. 2D, the reflector 14 and the reflector support base 13 are in contact with each other at least around the LED package 11 (so that no gap is generated). ) Thereby, the fall of instrument efficiency (light utilization efficiency of the light-emitting device 10) can be suppressed. A translucent (colorless and transparent) material having substantially the same shape as the color conversion member 15 and having no color conversion function may be sandwiched between the reflector 14 and the reflector support base 13.

  As described above, in the present embodiment, the casing surrounding the LED package 11 of the light-emitting device 10 is largely divided into two parts as a reflector 14 part and a reflector support base 13 part, and has a separate combined structure. Thereby, in the light emitting device 10 having the light distribution control function, it is possible to realize a device that performs color matching easily by replacing the color conversion member 15 without impairing the function.

  Further, in the present embodiment, the color conversion member 15 is not attached to each LED package 11 but is an integrated type that can cover all the surfaces of the LED package 11 at the same time (simultaneously). It should be noted that, instead of covering all of the ten LED packages 11 with only one color conversion member 15 in this way, for example, the three LED packages 11 are covered with one color conversion member 15 and another color is added. A configuration in which the remaining seven LED packages 11 are covered with the conversion member 15 may be employed. The number of color conversion members 15 is arbitrary. That is, in the present embodiment, the color conversion member 15 is detachably incorporated into the reflector support base 13 so that the incident surface 55 covers the light emitting surfaces 51 of two or more LED packages 11 of the LED packages 11. . For this reason, it is possible to adjust the luminescent color of the two or more LED packages 11 to the target light color by one replacement operation of the color conversion member 15. The color conversion member 15 has a structure in which a material for converting the wavelength of light (wavelength conversion material) is provided on a common support so as to cover the light emitting surfaces 51 of the plurality of LED packages 11. For example, the color conversion member 15 can be realized as a thin sheet of about several hundred μm (micrometer). At this time, the color conversion member 15 is configured so that there is no change in light distribution between the case where the sheet-like color conversion member 15 is incorporated in the reflector support base 13 and the case where the sheet-like color conversion member 15 is removed (only the emission color is converted). You can also

  Further, in the present embodiment, the position of the color conversion member 15 is not the position of the front cover 16, but is between the reflector 14 (particularly, the entrance 52) and the LED package 11. As a result, the entire surface of the surface cover 16 is not colored in appearance, and the change in appearance color can be limited only to the entrance 52 of the reflector 14. For this reason, even when the light emitting device 10 is turned off, the influence (uncomfortable feeling) given to the design of the light emitting device 10 itself due to the unique coloring of the color conversion member 15 can be suppressed. Therefore, the aesthetics of the building space where the light emitting device 10 is used is not impaired. In particular, in the light emitting device 10 shown in FIGS. 1A, 1B, etc., each LED package 11 is provided with a portion for performing light distribution control of the reflector 14 (a space formed in a tapered shape of the reflector 14). Since each one is provided, the apparent color change is limited to the portion of each incident port 52 (directly above the LED package 11). Therefore, it is the same as simply replacing the LED package 11 with an LED package having another light color.

  Further, in the present embodiment, the translucent surface cover 16 that covers the emission port 54 of the reflector 14 is provided on the surface of the reflector 14, but when the color conversion member 15 is attached and detached, the surface cover 16 itself Need not be removed from the reflector 14. Therefore, the effect that the attaching / detaching operation of the color conversion member 15 is easy regardless of the presence or absence of the front cover 16 can be obtained. As described above, the use of the front cover 16 enables light distribution control and light emission amount control. Moreover, it becomes possible to prevent the performance degradation of the light-emitting device 10 by dust and dirt adhering to the inside of the reflector 14, the LED package 11, and the color conversion member 15.

  Further, in the present embodiment, as shown in FIG. 1B and FIG. 2B, the surface mount type LED package 11 having a flat light emitting surface 51 is used. For example, the sheet-like color conversion member 15 is disposed such that the incident surface 55 is in close contact with (is in contact with) the light emitting surface 51 of the LED package 11. Thereby, the loss of light due to the air layer interposed between the color conversion member 15 and the LED package 11 is suppressed.

  Further, in the present embodiment, by adjusting the pigment type and blending amount constituting the color conversion member 15 in accordance with the emission spectrum characteristics of the LED package 11, for example, according to the JIS (Japanese Industrial Standard) illumination color range. Chromaticity adjustment and correlated color temperature adjustment are possible. In addition, color rendering can be improved. Furthermore, when a difference in emission color occurs between the plurality of LED packages 11 due to a difference in the production lot of the LED package 11, the color conversion member 15 can be used as a member for correcting the emission color. In the present embodiment, such a color conversion method using the color conversion member 15 is used. Therefore, when it is desired to change the emission color, the substrate 12 may be mounted with the LED package 11 of a different light color in some cases. There is no need to change things. Therefore, electrical work associated with the replacement of the substrate 12 is not necessary. Furthermore, it is not necessary to manage a plurality of types of LED packages 11 (different shades and color rendering properties), which is effective in terms of component management. In addition, as described above, since a complicated control circuit is not required as compared with the case where dimming control is performed using a plurality of LED packages 11 having different light colors, the device price can be reduced.

  The color conversion member 15 may be a color filter in which an organic coloring pigment material is mixed with a resin, or may be one in which a phosphor is bound with a resin material or the like. In the former case, the color conversion member 15 changes the emission color by limiting a part of the wavelength region of the light emitted from the LED package 11. On the other hand, in the latter case, the color conversion member 15 changes the emission color by utilizing the fact that the phosphor is excited by the light emitted from the LED package 11 and emits light having a wavelength different from the wavelength of the light.

  In the former (when the color conversion member 15 is a color filter), for example, a white LED is used as the LED package 11, and a color filter having a short wavelength transmittance and a high long wavelength transmittance is used as the color conversion member 15. The color can be converted to warm white or light bulb color. In general, the former can use a material cheaper than the latter, and thus the light emitting device 10 can be realized at a low cost. In addition, from the viewpoint of limiting the wavelength, for example, it is possible to use a filter with less color that cuts the visible light short wavelength region including the near ultraviolet region. In addition, it is possible to use a resin material such as a multilayer metal vapor deposition film on glass.

  In the latter case (when a phosphor is used for the color conversion member 15), for example, a white LED is used as the LED package 11, and a fluorescent material containing a red phosphor or a green phosphor is used as the color conversion member 15. By converting the short wavelength component (blue to yellow region), the emission color can be converted into warm white or a light bulb color. At this time, the color rendering properties of the luminescent color can be adjusted by adjusting the type and mixing ratio of the materials. Therefore, high color rendering color temperature adjustment is also possible by the material configuration of the LED package 11 and the color conversion member 15.

  In the latter case (when a phosphor is used for the color conversion member 15), the color conversion member 15 can be realized as a thin sheet material using a heat resistant material such as translucent silicone for the bind resin. Further, if necessary, a fine uneven texture can be added to the surface of the color conversion member 15 in order to improve the light diffusibility. Further, a protective material such as a thin heat-resistant PET (polyethylene terephthalate) material or a polycarbonate material may be adhered to at least one of the front surface and the back surface of the color conversion member 15. Thereby, the intensity | strength of the color conversion member 15 increases and the exchange workability | operativity of the color conversion member 15 can be improved. At this time, a region corresponding to the light emitting surface 51 of each LED package 11 may be opened with a protective material in close contact with the front and back surfaces of the color conversion member 15. For example, a protective material is opened in accordance with the opening shape of the incident port 52 of the reflector 14 (that is, an opening having substantially the same shape and the same size as the incident port 52 is formed at a position corresponding to the incident port 52 in the protective material. To provide). Thereby, when the color conversion member 15 is attached and detached, the color conversion member 15 is hardly damaged and is not easily broken. In addition, the color conversion member 15 can be protected from the heat of the LED package 11. For example, when the color conversion member 15 is formed of a material having low heat resistance, the color conversion member 15 is deformed by the heat of the LED package 11 when the color conversion member 15 is disposed immediately above the LED package 11 that is in a high temperature environment. Or the characteristics of the color conversion member 15 deteriorate (translucency decreases). However, by using the protective material as described above, it is possible to avoid the color conversion member 15 from being deformed or the characteristics of the color conversion member 15 from being deteriorated, and to improve the reliability of the light emitting device 10. it can. Instead of using a protective material, a material having high strength may be used for the color conversion member 15 itself. For example, the color conversion member 15 may be a thin light-transmitting PET material formed by screen printing a fluorescent resin layer, or a UV (ultraviolet) curable resin mixed with a fluorescent material. Also good.

  The color conversion member 15 may be configured so that the binding material includes a light diffusing filler such as titanium dioxide or silica beads having a particle diameter equal to the phosphor particle diameter in addition to the phosphor. In this case, the light scattering efficiency of the color conversion member 15 can be increased. Then, the spread of light inside the color conversion member 15 can be promoted, and this can lead to low color unevenness and improvement in luminous efficiency.

  In the latter case (when a phosphor is used for the color conversion member 15), the color conversion member 15 can be configured to include a red phosphor (pigment) that emits and emits light at the emission wavelength of the LED package 11. In this case, for example, if the LED package 11 is a white LED composed of a blue LED chip 81 and a sealing resin 83 mainly containing a yellow phosphor, the red phosphor of the color conversion member 15 is the LED package 11. Low color temperature adjustment is possible because it absorbs the luminescent component and gives the long wavelength component. Color rendering can also be improved. In addition, an LED package 11 that emits light only in the near ultraviolet (blue-violet) region or blue region of about 360 to 430 nm (nanometer) is used, and the former is excited in the near ultraviolet region as the color conversion member 15. A white conversion material in which blue, green, and red fluorescent materials are mixed, and in the latter case, a white conversion material in which green and red fluorescent materials that are excited in the blue region of about 430 to 470 nm are mixed or a yellow fluorescent material is used as a main material. The white light emitting device 10 can be realized by using the white conversion material. At this time, by selectively using the color conversion member 15 in which the mixing conditions of various fluorescent materials are adjusted, for example, light emission of an arbitrary emission color among daylight color, daylight white, white, warm white, and light bulb color of JIS illumination colors. The device 10 can be realized. Also, depending on the selection of the fluorescent material, light colors with high saturation in various hues suitable for effect lighting and the like can be realized. In addition, when using what shows white light to the appearance as LED package 11, LED which emits light of higher color temperature than the target light color on the premise of energy absorption with the fluorescent substance used for the color conversion member 15 The package 11 may be used. For example, when the target light color is a light bulb color of JIS illumination color, a white LED having a color temperature higher than warm white is used. When the target light color is white of the JIS illumination color, a daylight color or a day white LED is used. When the target light color is a daylight white color of JIS illumination, a daylight color or an LED having a higher color temperature is used.

In the color conversion member 15 as described above, in consideration of surface protection at the time of replacement and improvement in reliability after mounting (suppression of deterioration due to lifetime and environmental factors), etc., the surface is resistant to touch, weather, light, A material having heat resistance or the like may be formed as a protective film by printing or laminating. As a result, even if an operator touches the surface of the color conversion member 15 during replacement, the wavelength conversion material contained in the color conversion member 15 is damaged or peeled off, and the function is partially lost. The situation can be prevented. Further, after the color conversion member 15 is mounted, the wavelength conversion material is unlikely to deteriorate according to the environmental conditions in the light emitting device 10, and the color conversion member 15 can be a long-life member. Examples of the fluorescent material that gives such an effect include CaAlSiN ₃ : Eu, (Sr, Ca) ALSiN ₃ : Eu, and the like in the red type. CaAlSiN ₃ : Eu has advantages such as high water resistance and low temperature quenching. _{Further, Ca 2 Si 5 N 8:} Eu, CaSiN 2: Eu or the like can also be used. Alternatively, CaS: Eu or the like can be used depending on the operating temperature range. In the green system, materials having good environmental properties such as Ca ₃ Sc ₂ Si ₃ O ₁₂ : Ce and CaSc ₂ O ₄ : Ce can be given. In the green to yellow system, (Sr, Ca, Ba) ₂ SiO ₄ : Eu and the like can be given. In addition, α-sialon-based and β-sialon-based phosphors can also be used.

  As described above, the color conversion member 15 can be realized as containing a coloring material containing a pigment or a wavelength filter material that cuts a part of the wavelength of light incident from the incident surface 55. Or the color conversion member 15 is also realizable as what contains the fluorescent material containing fluorescent substance. As LED package 11, what radiates | emits the light containing the light emission wavelength component of 360-470 nm from the light emission surface 51 can be utilized, for example. For example, a white LED can be used as the LED package 11.

  FIG. 3A is a partially enlarged view of a region C in FIG. FIG. 3B is a partially enlarged view similar to FIG. 3A, but shows a state in which the reflector 14 and the color conversion member 15 are removed.

  As shown in FIG. 3B, the reflector support base 13 has an opening 17 that surrounds each LED package 11 so as to avoid the electrode terminals 84 (not to contact the electrode terminals 84). In order to suppress a decrease in instrument efficiency, it is desirable that the opening shape and the area of the entrance port 52 of the reflector 17 and the reflector 14 are substantially the same. The opening area of the opening 17 is desirably as small as possible. By setting the size of the opening 17 to be approximately the outer size of the LED package 11, the operator's fingertips and the like do not directly touch the electrode terminals 84 of the LED package 11 when attaching and detaching the reflector 14 and the color conversion member 15. Therefore, the worker can work safely. For example, when NS3W183 manufactured by Nichia Corporation is used as the LED package 11, the size including the electrode is 6.5 mm (millimeters) wide (1.5 mm width of both electrode regions) × 5 mm long × 1.35 mm high. It is. Therefore, for example, the size of the opening 17 may be 7 mm wide × 7 mm long. In addition, the height of the opening part 17 is the same as the thickness of the reflector support stand 13, and is 1.5 mm, for example.

  In the present embodiment, at least the inner surface of the opening 17 of the reflector support base 13 is a light reflecting surface having high reflectivity. That is, the opening 17 of the reflector support base 13 reflects light at the inner surface. Thereby, the light that has entered the opening 17 can be efficiently reused. As a result, the instrument efficiency is improved. The opening area of the opening 17 is preferably included in the entire opening area of the incident port 52 of the reflector 14. That is, as described above, it is desirable that the opening 17 and the incident port 52 of the reflector 14 have substantially the same opening shape and area, or the opening 17 has a smaller opening shape and area than the incident port 52 of the reflector 14. . This is because if the magnitude relationship is reversed, light that enters between the opening 17 of the reflector support 13 and the lower portion of the reflector 14 is generated, resulting in a decrease in instrument efficiency.

  As described above, in the present embodiment, the light emitting device 10 including the light distribution control member such as the reflector 14 does not use the electrical control method, but easily uses the color conversion member 15 to easily emit light. The color conversion member 15 can be easily attached and detached from the outside, and a non-colored device having a strange feeling in the appearance of the apparatus can be provided. Therefore, when the light-emitting device 10 is installed in a lighting fixture and installed in a facility space, for example, if there is a request for color temperature adjustment, light color conversion, etc. from the owner or design office, the light source module (the LED package 11 and the substrate 12). ) Can be quickly responded to the request by adding or replacing only the color conversion member 15 (color converter) in the field (with the lighting fixture installed in the facility space) without changing . In this embodiment, it is possible to improve instrument efficiency and light color rendering. Furthermore, since there is no need for electrical LED dimming control, it is possible to provide an inexpensive light emitting device 10 that does not use a dimming power source for color mixing that is a high cost factor.

  Here, in the above-mentioned Patent Document 4, a configuration in which only the reflector portion of the light source device is detachable (not intended for color adjustment) is shown. In this configuration, only the second reflecting cup is replaceable between the first reflecting cup and the second reflecting cup, and the first reflecting cup that is the base of the reflector portion remains fixed. On the other hand, the light emitting device 10 according to the present embodiment employs a technique in which the entire reflector 14 is easily attached and detached so that the color conversion member 15 that simultaneously covers the plurality of LED packages 11 can be easily replaced. It is.

  Note that the light emitting device 10 according to the present embodiment can be used for, for example, special lighting for museums, medical use, and the like in addition to lighting fixtures such as general lighting and effect lighting regardless of the luminous flux. It can also be used for lighting devices incorporated in equipment such as showcases and refrigerators, or backlights for sign lights and indicator lights.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 4 is an exploded perspective view of the light emitting device 10 according to the present embodiment. FIGS. 5A, 5 </ b> B, and 5 </ b> C are a bottom view, a side view, and a top view of the light emitting device 10, respectively. FIG.5 (d) is DD sectional drawing of FIG.5 (b).

  In the present embodiment, the mounting recess 19 is provided on the reflector support base 13, and conversely, the mounting projection 18 is provided on the reflector 14. When the reflector support 13 and the reflector 14 are combined, the mounting recess 19 and the mounting projection 18 are fitted. Thereby, similarly to Embodiment 1, the operation | work which attaches the reflector 14 to the reflector support stand 13 becomes easy. Similarly to the first embodiment, it is possible to prevent the reflector 14 from being easily detached after the reflector support 13 and the reflector 14 are fitted. Also in the present embodiment, when the reflector 14 is separated from the reflector support base 13, the state in which the mounting convex portion 18 and the mounting concave portion 19 are fitted by, for example, spreading the side wall of the reflector support base 13 outward is used. Needless to say, it can be canceled. FIG. 4 shows that the conductive pattern 22 is formed on the substrate 12 as described above.

Embodiment 3 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  6A and 6B are cross-sectional views of the light emitting device 10 according to the present embodiment. In the present embodiment, the bottom view of the light emitting device 10 is the same as FIG. 1A, FIG. 6A is a cross-sectional view taken along the line BB in FIG. 1A, and FIG. It corresponds to AA cross-sectional view (part) of 1 (a).

  In the present embodiment, as shown in FIGS. 6A and 6B, the light emitting device 10 is moved from the position of the surface (light emitting surface 51) of the LED package 11 to the opening 17 (bottom surface) of the reflector support base 13. The position of is lower (in the figure, the upper side). That is, a part of the LED package 11 protrudes from the opening 17 of the reflector support base 13. Then, the color conversion member 15 mounted on the reflector support 13 is provided with a recess 23 that covers the LED package 11 in accordance with the shape of the LED package 11. That is, the color conversion member 15 includes a recess 23 formed in a shape corresponding to the protruding portion of the LED package 11. The color conversion member 15 is detachably incorporated into the reflector support base 13 so that the concave portion 23 covers the protruding portion of the LED package 11.

  In the present embodiment, since the light emitting surface 51 of the LED package 11 is disposed at a slightly higher position than the bottom surface of the reflector 14, the light from the LED package 11 can be effectively reflected entirely by the reflector 14, and the light emitting device 10 emits light. Efficiency is improved. In addition, since the concave portion 23 of the color conversion member 15 and the LED package 11 are fitted together, the color conversion member 15 can be positioned and the color conversion member 15 can be fixed. In addition, when the color conversion member 15 is not attached, the reflector 14 is also present on the side closer to the substrate 12 than the light emitting surface 51 of the LED package 11, so that the direction is lower than the light emitting surface 51 of the LED package 11 (in the drawing). The light traveling upward) can be reflected and used by the reflector 14, and the light emission efficiency of the light emitting device 10 is improved.

  In FIG. 6A, the color conversion member 15 having a wider width than that of the first embodiment is used as the color conversion member 15. However, this width may be further narrowed. As described above, when the width is wide, a hole is provided in a portion corresponding to the insertion convex portion 20, and the color conversion member 15 can be positioned (fixed) by inserting the insertion convex portion 20 into the hole. it can. Regardless of the width, in the present embodiment, the width of the concave portion 23 of the color conversion member 15 is the same as or slightly smaller than the width of the entrance 52 of the reflector 14. The color conversion member 15 can also be positioned (fixed) by fitting the recess 23 into the incident port 52 of the reflector 14. Thereby, when the light emitting device 10 is installed on the ceiling surface for illumination purposes, the color conversion member 15 is easily attached to the reflector support base 13 together with the reflector 14 in a state where the color conversion member 15 is placed on the upper surface of the reflector 14. Can do.

Embodiment 4 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 6C is a cross-sectional view of the light emitting device 10 according to the present embodiment. In the present embodiment, the bottom view of the light-emitting device 10 is the same as FIG. 1A, and FIG. 6C corresponds to the BB cross-sectional view of FIG.

  In the present embodiment, the color conversion member 15 contains a fluorescent material only in a region that covers the light emitting surface 51 of the LED package 11. Here, support plates 24 (not containing a fluorescent material) for supporting the color conversion member 15 are provided at both ends of the color conversion member 15. Since the fluorescent material is relatively expensive, the material cost can be reduced by arranging the color conversion member 15 (particularly, the fluorescent material) in a limited manner.

Embodiment 5 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG.6 (d) is sectional drawing of the light-emitting device 10 which concerns on this Embodiment. FIG. 6D is a diagram corresponding to FIG. 2D used in the description of the first embodiment, and corresponds to a cross-sectional view taken along line BB in FIG.

  In the present embodiment, the opening 17 of the reflector support base 13 has an opening area that increases from the side closer to the substrate 12 toward the side farther from the side. The portion with the largest opening area is approximately the same size as the entrance 52 of the reflector 14. As described above, the side surface of the opening 17 is formed into a slope shape so as to extend the shape of the slope (inner side surface 53) of the reflector 14, so that the reflector 14 and the opening portion 17 can be formed without the color conversion member 15. A step does not occur in the shape of the side surface, and light loss due to repeated reflection at the step can be suppressed.

Embodiment 6 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 7A is a cross-sectional view and a bottom view of the light emitting device 10 according to the present embodiment.

  In the present embodiment, the light emitting device 10 has a cylindrical shape, and the planar shape is circular. The configuration is the same as in the first embodiment. The light emitting device 10 can be used as, for example, a downlight for space illumination or a light emitting unit that forms the core of the downlight.

Embodiment 7 FIG.
In the present embodiment, differences from the sixth embodiment will be mainly described.

  FIG. 7B is a cross-sectional view and a bottom view of the light emitting device 10 according to the present embodiment.

  As shown in FIG. 7B, a configuration in which the opening 17 of the reflector support base 13 simultaneously surrounds a plurality of (here, five as an example) LED packages 11 may be employed. Here, the incident port 52 of the reflector 14 is the same as or slightly larger than the opening 17 of the reflector support base 13, and the light from the plurality of LED packages 11 is incident through one incident port 52. Similarly to the sixth embodiment, the entrance 52 may be provided for each LED package 11.

Embodiment 8 FIG.
In the present embodiment, differences from the seventh embodiment will be mainly described.

  FIG.7 (c) is sectional drawing and bottom view of the light-emitting device 10 which concerns on this Embodiment.

  In the present embodiment, the color conversion member 15 contains the fluorescent material only in the region covering the light emitting surface 51 of the LED package 11 as in the fourth embodiment. That is, the color conversion member 15 is configured such that portions other than the support plate 24 are positioned only directly above the individual LED packages 11. Here, by forming the support plate 24 with the same material as the reflector 14 or with the same color material, the coloring of the support plate 24 can be prevented from affecting the appearance of the apparatus.

Embodiment 9 FIG.
Fig.8 (a) is a bottom view of the illuminating device 90 which concerns on this Embodiment. FIG. 8B is an EE cross-sectional view of FIG.

  As shown to Fig.8 (a), the light-emitting device 10 which concerns on Embodiment 1-5 can be used for the square-shaped illuminating device 90. FIG. Here, an example in which the light-emitting device 10 according to Embodiment 1 is used is particularly shown, but the present invention is not limited to this.

  In the example shown in FIGS. 8A and 8B, the lighting device 90 includes four light emitting devices 10, a housing 91, a louver 92, a power circuit 93, a radiator 94, and a light emitting device mounting base 95. I have. Two light emitting devices 10 constitute one light emitting unit, and a louver 92 for anti-glare purposes is provided on the surface of each light emitting unit. The louver 92 can be removed from the housing 91 as necessary. As shown in FIG. 8B, the two light emitting devices 10 constituting one light emitting unit are attached so that the respective substrates 12 are in close contact with the light emitting device mounting base 95. A heat radiator 94 that dissipates heat generated by the LED package 11 via a light emitting device mounting base 95 is provided on the back side of the substrate 12. A power supply circuit 93 for driving the LED package 11 is also provided.

  As described above, even when the light emitting device 10 is used for a lighting fixture, for example, if it is necessary to convert the emission color according to the user's request at the installation site of the fixture, as described above, it is simple and quick. We can meet your needs. Specifically, if the louver 92 is removed from the housing 91 of the lighting device 90 and the reflector 14 is detached from the reflector support base 13 of the light emitting device 10, then the color conversion member 15 can be simply attached and detached for quick and easy operation. It is possible to convert the emission color. In particular, since there is no need to replace the substrate 12 of the light emitting device 10 with the substrate 12 on which the LED packages 11 of different light colors are mounted, not only the operation is troublesome but also the LED package 11 and the substrate 12 to be managed. An increase in the number of types can be prevented. That is, since no electrical work is required at the installation site of the appliance, an effect can be obtained that the burden can be reduced from the parts management surface of the LED package 11 and the replacement work surface of the color conversion member 15.

  The lighting device 90 as described above is installed in a system ceiling in an office space, for example. In the present embodiment, the color conversion member 15 can be easily replaced from the outside while the lighting device 90 is installed, so that it can be easily adapted to the needs of the user (office worker, client, etc.) when necessary. It is possible to change the properties of the room illumination light (color shade, color rendering, etc.).

Embodiment 10 FIG.
FIG.8 (c) is a bottom view of the illuminating device 90 which concerns on this Embodiment.

  As shown in FIG.8 (c), the light-emitting device 10 which concerns on Embodiment 1-5 can be used also for the linear illuminating device 90. FIG.

  In the above, some embodiments of the light emitting device 10 in which the color conversion member 15 can be attached and detached have been shown. Among them, in the example of the line-shaped device configuration in which the reflectors 14 are individually provided at positions corresponding to the plurality of LED packages 11 as shown in FIG. There are restrictions on the number. On the other hand, the characteristics of the LED package 11 itself are being improved day by day, and it is necessary for the light emitting device 10 to respond flexibly to demands for increasing the amount of light in the market.

  Hereinafter, an embodiment in which the configuration of the light emitting device 10 is changed from such a viewpoint will be described.

Embodiment 11 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  9A is a cross-sectional view (cross-sectional view cut in the short direction) of the light-emitting device 10 according to the present embodiment, and FIG. 9B is an exploded perspective view of the light-emitting device 10 (one). Part).

  As shown in FIGS. 9A and 9B, the light emitting device 10 includes a substrate 12 on which a plurality of LED packages 11 are mounted in a line shape (substantially linear shape), similar to those shown in FIGS. And a reflector 14, and a color conversion member 15 (for example, a sheet shape) for converting the light color of the LED is detachably provided therebetween. Further, in the present embodiment, the light emitting device 10 includes the main body side reflector 101 (an example of another reflector) in which the color conversion member 15 can be disposed at the end 101a on the side close to the reflector 14. One main body-side reflector 101 is provided along the LED package array 100 (an example of a light source group composed of two or more light sources) that is an array of the LED packages 11 arranged in a line, and is emitted from the LED package array 100. The reflected light is reflected by the inner surface 101b and emitted from the end 101a. At least the substrate 12 and the main body side reflector 101 constitute an apparatus main body.

  Here, although the planar shape and the side surface shape are rectangular as an example of the light emitting device 10, other shapes may be adopted. In addition, an example of the light emitting device 10 is used for ceiling lighting or the like and emits light downward, but the usage of the light emitting device 10, the light emitting direction, and the like are arbitrary. In addition, as an example of the main body side reflector 101, the main body side reflector 101 is provided along the LED package array 100 composed of all the LED packages 11 mounted on the substrate 12. 11 may be provided along the LED package array 100 composed of only 11. In addition, as an example of the LED package array 100, a plurality of LED packages 11 arranged in a line on a substrate 12 are shown. However, a plurality of LED packages 11 are arranged in a line on two or more lines. The package array 100 may be configured.

  The color conversion member 15 is detachably installed on the end 101 a of the main body side reflector 101 so that the incident surface 55 faces the light emitting surface 51 of the LED package 11 constituting the LED package array 100. The reflector 14 is detachably attached to the apparatus main body so that the incident port 52 faces the end portion 101 a of the main body side reflector 101 with the color conversion member 15 interposed therebetween. Therefore, in a state where the color conversion member 15 is installed at the end 101a of the main body side reflector 101 and the reflector 14 is attached to the apparatus main body, first, the color conversion member 15 is emitted from the light emitting surface 51 of the LED package 11 constituting the LED package array 100. The incident light is incident on the incident surface 55 of the color conversion member 15 directly or after being reflected by the inner surface 101 b of the main body side reflector 101. Next, the color of the light incident on the incident surface 55 is converted by the color conversion member 15. Subsequently, the light whose color has been converted is emitted from the emission surface 56 of the color conversion member 15. And the light radiate | emitted from the output surface 56 injects into the entrance 52 of the reflector 14. FIG. Finally, the light incident on the incident port 52 is directly or directly reflected by the inner side surface 53 of the reflector 14 and emitted from the output port 54 of the reflector 14.

  Thus, in the present embodiment, the LED package 11 is mounted in a line shape, and the main body side reflector 101 is positioned on both sides along the longitudinal direction. Since there is no partition member between the LED packages 11, a conductive pattern (wiring pattern) is provided on the substrate 12 in advance so that the number and arrangement can be changed in advance (the light distribution can be changed as a result). The number of LED packages 11 to be mounted, the arrangement interval, and the like can be adjusted according to the necessity for increasing the amount of light of the device. Alternatively, it is possible to cope by replacing and mounting the substrate 12 on which the LED package 11 is mounted in a line shape under different mounting arrangement conditions. In the present embodiment, the same effect can be obtained even if the reflector 14 cannot be attached or detached.

  Moreover, in this Embodiment, the light emitted from the LED package 11 is the surface by making the inner surface 101b (surface) of the main body side reflector 101 into a surface with high reflectance irrespective of diffusibility and specularity. The light is efficiently reflected and enters the color conversion member 15. Further, the light reflected by the color conversion member 15 is reflected again by the inner side surface 101b of the main body side reflector 101, and reenters the color conversion member 15 while keeping the light intensity high. Therefore, it is possible to obtain a color variable light-emitting device 10 having good color conversion efficiency, that is, light emission efficiency. The main body-side reflector 101 is configured, for example, as a metal plate that has been surface-coated or vapor-deposited, a resin that is highly reflective polycarbonate or the like, or a thin highly reflective sheet material that is bent. Can do. The main body side reflector 101 is attached to the substrate 12 or the housing (a part of the apparatus main body), but the fixing method is not limited to one, and for example, a method such as screwing or fitting can be used. Since the color conversion member 15 and the reflector 14 are arranged on the end portion 101a side of the main body side reflector 101, particularly when the main body side reflector 101 is a thin sheet material, the main body side reflector 101 is not deformed. It is desirable to provide a reflector support portion 102 (a part of the apparatus main body) (not shown in FIG. 9B) as shown in FIG.

  In the present embodiment, the main body side reflector 101 (and the reflector support portion 102) constitutes the reflector support base 13. The inner wall of the main body-side reflector 101 forms an opening 17 of the reflector support base 13, and the opening 17 has an opening area from the side closer to the substrate 12 toward the side farther from the side similar to the fifth embodiment. It is getting bigger. The portion with the largest opening area is approximately the same size as the entrance 52 of the reflector 14.

  Although not shown here, as in the first embodiment, each of the reflector 14 and the main body side reflector 101 is provided with a fixing mechanism that can be engaged and fixed to each other, such as a fitting portion, and the reflector 14 and the main body side reflector. It is desirable that the color conversion member 15 be arranged and fixed between the terminal 101 and the terminal 101. At this time, the color conversion member 15 is shaped so as to be sandwiched and fixed between the reflector 14 and the main body side reflector 101, for example.

  As described above, the shape of the light emitting device 10 is not limited to that shown in FIGS. 9A and 9B, and may be a circle as shown in FIG. 7B, for example. In this case, by providing the main body side reflector 101 around the collective light source (light source group) composed of two or more LED packages 11 arranged in a ring shape or radially, it is also possible to deal with the light source arrangement and the number adjustment. It is possible to obtain an easy light-emitting device 10.

  With the above-described configuration, even when the required specifications for the light emitting device 10 are changed as described above, and the necessity for adjusting the number of LEDs or the arrangement of LEDs 11 arises, the individual LED packages 11 are mounted. There is no need to newly prepare a reflector 14 corresponding to the arrangement condition. In this embodiment, such a case can be dealt with by changing the number and arrangement of the LED packages 11 on the board 12 or by replacing the board 12 with the number and arrangement of the LED packages 11 adjusted in advance. It is.

  In the present embodiment, the color conversion member 15 is disposed away from the light emitting surface 51 of the LED package 11 (the distance can be adjusted by changing the thickness of the main body side reflector 101). 15 can relieve the stress given by the heat generated by the LED, and the color deterioration of the color conversion member 15 itself progresses gradually (lowering the luminous flux), so that it can be used for a longer period of time. Furthermore, when light distribution adjustment is necessary, the reflector 14 arranged on the emission surface 56 side of the color conversion member 15 is prepared in various shapes, and can be selected and mounted as necessary. Is possible.

  Below, the modification of this Embodiment is demonstrated.

  FIG. 9C is an exploded perspective view (part) of the light emitting device 10 according to the first modification of the present embodiment. FIG. 9C is a diagram corresponding to FIG. 9B used for describing the present embodiment.

  In this example, a plate-like member 103 having insulating properties and translucency is detachably attached between the color conversion member 15 and the main body side reflector 101. The plate-like member 103 covers the LED package array 100 and is formed of a light-transmitting material having non-conductivity (insulating properties) such as PET resin, acrylic resin, polycarbonate resin, or the like. With this configuration, when attaching / detaching the color conversion member 15, the operator does not touch the electrode portions of the individual LED packages 11, and it is safe even if the attachment / detachment operation is performed while energized. Product.

  FIG. 9D is an exploded perspective view (part) of the light-emitting device 10 according to the second modification of the present embodiment. FIG. 9D is a diagram corresponding to FIG. 9B used for describing the present embodiment.

  In this example, at least one reflecting frame 104 (reflecting plate) is attached from one side to the other of the inner side surfaces 53 facing in the short direction of the reflector 14 arranged on the emission surface 56 side of the color conversion member 15. The reflection frame 104 is provided along the short direction at a position corresponding to some LED packages 11. With such a configuration, when the light emitting device 10 is used for ceiling lighting or the like that irradiates the lower side, the color conversion member 15 is firmly fixed by the reflection frame 104. Furthermore, by providing several reflection frames 104 at positions corresponding to the LED packages 11, it is possible to narrow a colored region widely observed on the surface of the color conversion member 15 when the light is turned off. Further, by arranging the reflection frame 104 at a position corresponding to between the LED packages 11, the luminance distribution on the light emitting surface of the light emitting device 10 regularly changes between a bright part and a dark part. This also leads to improvement and homogenization of illuminance distribution. At the same time, as a basic function of the reflection frame 104, glare due to glare when the light emitting device 10 is viewed from a distance can be suppressed.

  Although not shown, the reflection frame 104 may be disposed on the optical axis of each LED package 11 instead of the position corresponding to the LED packages 11. Since the light emitting surface of the light emitting device 10 has the highest luminance on the optical axis of each LED package 11, when the reflecting frame 104 is placed on the optical axis of the LED package 11, the light emitting device 10 is viewed. The unpleasant glare that can be felt can be suppressed, and a soft lighting environment that is difficult to feel dazzling can be produced.

Embodiment 12 FIG.
The difference between the present embodiment and the eleventh embodiment will be mainly described.

  10 (a), 11 (a), and 12 (a) are exploded perspective views of the light emitting device 10 according to the present embodiment, and FIG. 10 (b), FIG. 11 (b), and FIG. 12 (b). FIG. 3 is a cross-sectional view of the light emitting device 10 in the short direction. FIGS. 10A and 10B show a state in which the reflector 14 and the substrate receiving plate 106 (a part of the apparatus main body) of the light emitting device 10 are removed, whereas FIGS. These show the state which attached the reflector 14 and the board | substrate receiving plate 106 of the light-emitting device 10. FIG. 11A and 11B show a state in which the light-transmitting cover 105 and the substrate receiving plate 106 of the light emitting device 10 are attached, whereas FIGS. 12A and 12B show The state which removed the translucent cover 105 and the board | substrate receiving plate 106 of the light-emitting device 10 is shown.

  As shown in FIGS. 10A and 10B, the light emitting device 10 has a plurality of LED packages 11 mounted in a line (substantially linear) like the one shown in FIGS. The board | substrate 12 with which 22 was formed, the color conversion member 15, and the main body side reflector 101 similar to Embodiment 11 are provided. Further, in the present embodiment, the light emitting device 10 includes a dome-shaped (convex) translucent cover 105 that is attached to the emission surface 56 side of the color conversion member 15. The translucent cover 105 covers the emission surface 56 of the color conversion member 15 and is curved toward the light emission surface side of the light emitting device 10. As the translucent cover 105, for example, a light diffusing cover such as a milky white cover can be used. By forming the translucent cover 105 in a curved shape, there is a certain space between the color conversion member 15 near the inside of the apex, so that the light emitted from the color conversion member 15 is sufficiently transmitted within the translucent cover 105. Can be diffused. Therefore, the non-uniformity of the light emission intensity distribution (difference in the light emission intensity) caused by the arrangement of the LED package 11 on the surface of the color conversion member 15 can be suppressed, and a soft light distribution characteristic such as a fluorescent lamp can be obtained. be able to.

  In the figure, the substrate 12, the main body side reflector 101, and the color conversion member 15 are connected to each other, but only one of each is used, three or more are connected to each other, or different from each other. You may employ | adopt the structure used by connecting several. Further, the number of translucent covers 105 is not limited to one, and two or more translucent covers 105 may be connected and used (the same applies to a substrate receiving plate 106 and a reflector 14 described later). Here, both end portions in the longitudinal direction of the light emitting device 10 are opened so that seamless line illumination can be realized, but side walls or the like may be provided at both end portions in the longitudinal direction. In this case, a side wall or the like may be provided at the end in the longitudinal direction of the main body side reflector 101 (in this case, the inner surface is preferably a highly reflective surface), or a separate longitudinal casing is used. A side wall or the like may be provided at the end of the casing in the longitudinal direction.

  In addition, as shown in FIGS. 11A and 11B, in the present embodiment, the light emitting device 10 is arranged in order from the top, the substrate receiving plate 106 (an example of a housing), the substrate 12, the main body side reflector 101, The color conversion member 15, the translucent cover 105, and the reflector 14 can be used. The substrate receiving plate 106 is made of a metal material and supports the substrate 12. The reflector 14 is disposed on the dome-shaped translucent cover 105 disposed on the emission surface 56 side of the color conversion member 15. The reflector 14 includes a plurality of reflection frames 104 along the short direction, as in the second modification of the first embodiment. Since the translucent cover 105 is curved toward the emission port 54 side of the reflector 14, the reflecting frame 104 of the reflector 14 is processed to have the same cross section as the translucent cover 105. In other words, each reflection frame 104 is provided with a cutout that matches the shape of the translucent cover 105.

  With the configuration as described above, the light emitted from the LED package 11 is first converted into light of a different color by the color conversion member 15 and diffused by the translucent cover 105 to become soft light. Further, the light is irradiated to the lower part of the apparatus with the light distribution angle narrowed by the reflector 14. Further, when the light emitting surface of the light emitting device 10 having the above-described configuration is viewed from a distance, a familiar impression like a conventional fluorescent lamp illumination device is given at first glance, and the field of view is reflected by the reflection frame 104 of the reflector 14. The effect is that the angle is limited and it is difficult to perceive discomfort glare.

  As shown in FIGS. 12A and 12B, in the present embodiment, the translucent cover 105 may be removed from the light emitting device 10. In this case, the reflector 14 is arranged as it is on the emission surface 56 side of the color conversion member 15, but as described above, the reflection frame 104 of the reflector 14 is partially matched to the curved shape of the translucent cover 105. Since the shape is hollowed out, the translucent cover 105 can be inserted and used when necessary. Note that it is possible to take measures against glare or change the light distribution by adjusting the height of the reflection frame 104 or the like.

  In the present embodiment, through holes are provided in the end portions where the light of the main body side reflector 101 is incident according to the positions of the respective LED packages 11. You may open substantially the whole surface. Further, the reflection frame 104 of the reflector 14 may be removed.

  By adopting the configuration as described above, also in the present embodiment, it is possible to easily change the emission color by attaching and detaching the color conversion member 15, and it is also flexible to change the number of LED packages 11 (mounting density, etc.). Thus, the light emitting device 10 that can be used for a long time can be obtained. Further, by arranging a translucent cover 105 (for example, a dome-shaped milky white cover) on the emission surface 56 side of the color conversion member 15, a bright and dark image is generated due to the arrangement of the LED package 11 on the surface of the color conversion member 15. Therefore, it is possible to obtain an illumination having a light distribution characteristic close to that of a fluorescent lamp that has been used so far, that is, a highly diffusible illumination.

  As mentioned above, although embodiment of this invention was described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  DESCRIPTION OF SYMBOLS 10 Light-emitting device, 11 LED package, 12 board | substrate, 13 reflector support stand, 14 reflector, 15 color conversion member, 16 surface cover, 17 opening part, 18 attachment convex part, 19 attachment recessed part, 20 insertion convex part, 21 insertion recessed part, 22 conductive pattern, 23 recess, 24 support plate, 51 light emitting surface, 52 incident port, 53 inner surface, 54 exit port, 55 incident surface, 56 exit surface, 81 LED chip, 82 LED package housing, 83 sealing resin, 84 electrode terminal, 90 lighting device, 91 housing, 92 louver, 93 power supply circuit, 94 radiator, 95 light emitting device mounting base, 100 LED package array, 101 main body side reflector, 101a end, 101b inner side surface, 102 reflector support Part, 103 plate-like member, 104 reflective frame, 105 translucency Bar, 106 substrate receiving plate.

Claims (24)

A light source that emits light from the light emitting surface;
An apparatus main body comprising a substrate on which the light source is disposed, and a housing covering the substrate;
A color conversion member that enters light from an incident surface, converts the color of the light, and emits the light from an exit surface;
A reflector that emits light from an incident port, reflects the light from the inner surface, and exits from the exit port;
The housing has an opening surrounding the light source at a position corresponding to a position where the light source is disposed on the substrate,
The color conversion member is detachably incorporated in the apparatus main body so that the incident surface faces the light emitting surface of the light source,
The reflector is detachably attached to the apparatus body so that the incident port faces the opening of the housing across the color conversion member when the color conversion member is mounted on the apparatus body. The light-emitting device is attached to the apparatus main body so that the entrance is directly opposed to the opening of the casing when the color conversion member is not attached to the apparatus main body.   The reflector is attached to the apparatus main body so that at least the light source is in contact with the casing and does not have a gap with the casing when the color conversion member is not attached to the apparatus main body. The light-emitting device according to claim 1. A light source that emits light from the light emitting surface;
An apparatus main body comprising a substrate on which the light source is disposed, and a housing covering the substrate;
A color conversion member that enters light from an incident surface, converts the color of the light, and emits the light from an exit surface;
A reflector that emits light from an incident port, reflects the light from the inner surface, and exits from the exit port;
The housing has an opening surrounding the light source at a position corresponding to a position where the light source is disposed on the substrate,
The color conversion member is detachably incorporated in the apparatus main body so that the incident surface faces the light emitting surface of the light source,
The reflector is detachably attached to the apparatus body so that the incident port faces the opening of the housing across the color conversion member when the color conversion member is mounted on the apparatus body. In a state where the color conversion member is not mounted on the apparatus main body, the incident port is attached to the apparatus main body so as to face the opening of the casing with a translucent material having no color conversion function interposed therebetween. A light emitting device characterized by that. The light-emitting device according to claim 3, wherein the translucent material has substantially the same shape as the color conversion member. The opening of the housing, the light emitting device according to claim 1, characterized in that the reflected light at the inner surface to 4. The opening of the housing, the light emitting device according to claim 1, characterized in that the opening area increases toward the side far from the side close to the substrate to 5. The light emitting device according to claim 6 , wherein the opening of the housing has a portion having the largest opening area that is substantially the same size as the entrance of the reflector. The housing is formed in a concave shape,
The color conversion member is detachably disposed on the bottom surface of the housing such that the incident surface covers the opening of the housing,
When the color conversion member is mounted on the apparatus main body, the reflector is detachably attached to the inside of the housing so that the incident port faces the opening of the housing across the color conversion member. the light emitting device according to claim 1, characterized in that it is fitted to 7. The reflector includes a convex portion or a concave portion on a surface where the incident port is provided,
The housing includes a concave portion or a convex portion on a surface opposite to the surface facing the substrate,
The reflector according to claim 1, wherein the projections or recesses are removably attached to the housing to mate with recesses or projections of the housing until 8 Light emitting device. The light source partially protrudes from the opening of the housing,
The color conversion member includes a recess formed in a shape corresponding to a protruding portion of the light source, and is detachably incorporated in the housing so as to cover the portion. The light emitting device according to any one of 1 to 9 . The light source is disposed in the apparatus main body so that the light emitting surface faces downward,
The reflector includes a positioning unit that positions the color conversion member in a state where the color conversion member is placed on an upper surface where the entrance is located,
The color converting member, the light emitting according to claim 1, characterized in that in a state of being positioned by the positioning unit is placed on top of the reflector attached to the apparatus main body with the reflector to 10 apparatus. The light source has a flat light emitting surface,
The light emitting device according to any one of claims 1 to 11 , wherein the color conversion member is detachably incorporated into the device main body so that the incident surface is in close contact with the light emitting surface of the light source. The light emitting device further includes:
The light emitting device according to any one of claims 1 to 12, further comprising a translucent surface cover that covers an emission port of the reflector. The light emitting device according to any one of claims 1 to 13 , wherein the color conversion member contains a fluorescent material containing a phosphor only in a region covering a light emitting surface of the light source . The light emitting device includes a plurality of the light sources,
15. The color conversion member is detachably incorporated in the apparatus main body so that the incident surface covers light emitting surfaces of two or more light sources among the light sources. The light emitting device according to 1. A light source group composed of two or more light sources each emitting light from the light emitting surface;
An apparatus main body in which the light source group is disposed, and an apparatus main body capable of attaching a reflector that inputs light from an incident port, reflects the light from an inner surface, and emits the light from an output port;
A color conversion member that enters light from an incident surface, converts a color of the light, and emits the light from an exit surface, the entrance surface facing a light emitting surface of the light source group, and the exit surface A color conversion member that is detachably incorporated in the apparatus main body so as to face the entrance of the reflector;
Another reflector that reflects light emitted from the light source group on an inner surface and emits the light from an end, and is disposed on the apparatus main body so that the end faces the incident surface of the color conversion member With reflectors,
In the state where the color conversion member is mounted on the apparatus main body, the reflector has the apparatus main body so that the incident port faces an end portion of the other reflector from which the light is emitted across the color conversion member. removably attached to, mounted on the apparatus main body as the color conversion member is in a state not mounted to the main assembly of the apparatus, the entrance is opposite to the end which light directly before SL other reflector is emitted A light emitting device.   In the state where the color conversion member is not attached to the apparatus main body, the reflector is arranged in the apparatus main body so that a gap is not formed between the reflector and the other reflector at least around the light source group. The light emitting device according to claim 16, wherein the light emitting device is attached. A light source group composed of two or more light sources each emitting light from the light emitting surface;
An apparatus main body in which the light source group is disposed, and an apparatus main body capable of attaching a reflector that inputs light from an incident port, reflects the light from an inner surface, and emits the light from an output port;
A color conversion member that enters light from an incident surface, converts a color of the light, and emits the light from an exit surface, the entrance surface facing a light emitting surface of the light source group, and the exit surface A color conversion member that is detachably incorporated in the apparatus main body so as to face the entrance of the reflector;
Another reflector that reflects light emitted from the light source group on an inner surface and emits the light from an end, and is disposed on the apparatus main body so that the end faces the incident surface of the color conversion member With reflectors,
In the state where the color conversion member is mounted on the apparatus main body, the reflector has the apparatus main body so that the incident port faces an end portion of the other reflector from which the light is emitted across the color conversion member. In the state where the color conversion member is not attached to the apparatus main body, the light incident from the other reflector is emitted through the translucent material having no color conversion function. The light emitting device is attached to the device main body so as to face the part. The light-emitting device according to claim 18, wherein the translucent material has substantially the same shape as the color conversion member. The light emitting device further includes:
The plate-shaped member which has insulation and translucency, and is detachably attached between the said color conversion member and said other reflector is provided , The any one of Claim 16-19 characterized by the above-mentioned. Light emitting device. The light emitting device further includes:
Cover the exit surface of the color conversion member, the light emitting device according to any one of claims 1 to 20, characterized in that it comprises a light-transmitting cover which is curved on the exit port side of the reflector.   The light emitting device according to any one of claims 1 to 21, wherein the light source is a white LED (light emitting diode). A light emitting device according to any one of claims 1 to 22,
A lighting device comprising: a power supply circuit for driving the light source.   23. A color converter comprising a color conversion member that is detachable from the light emitting device according to claim 1.

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