JP2009009826A - Illuminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device using a semiconductor light-emitting element capable of creating target light distribution characteristics easily. <P>SOLUTION: The illumination device is composed of a plurality of the semiconductor light-emitting elements 11, a substrate 12 in which the semiconductor light-emitting elements are arranged, a reflector which is formed on the substrate and composed of a plurality of recessed parts 12e formed opposing the respective semiconductor light-emitting elements, and a lens body 14 attached to the reflector. The lens body is attached to a plurality of the recessed parts of the reflector selectively, and creates the targeted light distribution characteristics easily. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

   The present invention relates to an illumination device using a semiconductor light emitting element such as a light emitting diode as a light source.

  In recent years, lighting fixtures employed as light sources for general lighting have been commercialized for semiconductor light emitting devices, for example, light emitting diodes, due to improvements in light emission efficiency. In this type of lighting fixture using a light emitting diode as a light source, a lighting device that controls light with a reflector or a lens is configured to efficiently emit light from the light emitting diode (see, for example, Patent Documents 1 to 3). ).

The device disclosed in Patent Document 1 controls light by arranging a light emitting diode at the bottom of a plurality of concave reflectors. The device disclosed in Patent Document 2 is controlled by providing a light emitting diode at the bottom of the lens body. Furthermore, the thing shown by patent document 3 is performed by combining a reflecting plate and a lens and raising the utilization efficiency of light.
JP 2004-287143 A JP 2006-49124 A JP 2004-179048 A

  However, for example, when a lighting device such as a downlight is configured by a lighting device provided with light control means such as a reflector and a lens, the light distribution of the device is matched to the target performance and application at the time of designing the device. Has been done. Therefore, when a lineup of instruments having various light distribution performances is required, molds for configuring the same number of reflectors and lenses as the type of light distribution performance desired for each instrument are required, which increases the cost of the instruments. . Furthermore, the light distribution performance of the lighting fixture is determined at the time of design, and there is a problem that the required light distribution performance cannot be easily obtained when the lighting environment is changed after installation of the fixture.

  For this reason, when the light source of the lighting fixture is configured by a semiconductor light emitting element such as a light emitting diode, an illumination device that can easily obtain an arbitrary light distribution performance and can change the light distribution each time. How to achieve this is an important issue.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an illuminating device using a semiconductor light emitting element capable of easily creating a desired light distribution characteristic.

  The invention of the lighting device according to claim 1 is a reflector comprising a plurality of semiconductor light emitting elements; a base on which the semiconductor light emitting elements are disposed; and a plurality of recesses formed on the base and provided facing the semiconductor light emitting elements. And a lens body that is selectively mounted in the concave portions of the plurality of reflectors.

  According to the present invention, a desired light distribution is achieved by a reflector formed of a plurality of recesses formed on a base and facing each semiconductor light emitting element, and a lens body that is selectively attached to the recesses of the plurality of reflectors. Characteristics can be easily created.

  In the present invention, the lighting device is not limited to a house such as a downlight or a spotlight, but may be a variety of lighting fixtures for facilities / businesses such as stores, offices, etc. An LED bulb or the like using a light-emitting diode that can be replaced with may be configured.

  As the semiconductor light emitting element, a light emitting element using a semiconductor as a light emitting source, such as a light emitting diode, an EL (electroluminescence) element, or a semiconductor laser, is allowed.

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

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

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

  The reflector is preferably formed by forming a recess in the case member that constitutes the base. However, the reflector may be formed integrally with the case member or may be mounted on the case member as a separate reflector. Good. When the base is configured by a circuit board, a reflector that is formed separately from the circuit board may be mounted on the circuit board. In the case of a plurality of semiconductor light-emitting elements, even if a reflector is provided for each light-emitting element, one or a plurality of common reflectors surrounding the entire light-emitting elements or a predetermined number of light-emitting elements. It may be configured. It is preferable that the reflector is configured so that the lens body described later can be mounted by increasing the light distribution angle. Conversely, the light distribution angle of the reflector may be reduced and the light distribution angle of the lens body may be increased. In order to obtain a light distribution to be rotated, the shape is preferably formed in a “mortar shape” having a circular cross section. For example, a shape such as a “mortar shape” having a rectangular cross section may be used. Well, not limited to the specified shape. Further, the surface may be painted white, or may be processed into a mirror surface or a semi-mirror surface.

  It is preferable that a plurality of reflectors are provided so as to obtain various light distribution characteristics. In addition, the reflector is preferably provided with a transparent or translucent light-transmitting cover member for protecting the semiconductor light emitting element and covering the charging portion at the light emitting portion, but the lighting device is incorporated in a fixture or the like. In this case, if it can be covered with a separate cover member, it may not be installed.

  The lens body is composed of, for example, a total reflection type lens with a small light distribution angle so that it can be attached to the reflector having the above-mentioned “mortar shape” with a large light distribution angle, and is fitted into the concave portion of the reflector. However, a convex lens having a convex shape on the outer side or the inner side may be mounted so as to face the light emitting portion of the reflector without being fitted into the concave portion. Further, the lens body may be formed integrally with the cover member described above.

  In order to obtain the desired light distribution characteristics, the lens body is arranged by selecting whether or not it is attached to the reflector, but it should be detachably arranged so that it can be removed even after being attached. However, it may be fixed with an adhesive after mounting.

  According to a second aspect of the present invention, in the illumination device according to the first aspect, the reflector has a light-transmitting cover member at a light emitting portion thereof, and the lens body is formed integrally with the cover member. It is characterized by being.

  The translucent cover member may be transparent or translucent, such as milky white, or may be colored, and materials made of synthetic resin or glass are acceptable.

  According to a third aspect of the present invention, in the illuminating device according to the first or second aspect, the translucent cover member has a light emitting part formed transparently and a brightness increasing means formed in another part. Features.

  For example, the brightness increasing means may increase the brightness of the surface by performing a light diffusion process such as a frost process, or may increase the brightness by introducing a part of light. All means for suppressing the occurrence of glare by increasing the luminance around the emitting portion are allowed.

  According to the first aspect of the present invention, it is possible to provide an illuminating device capable of easily creating a desired light distribution characteristic by selecting and attaching the lens body to the concave portions of the plurality of reflectors. .

  According to the second aspect of the present invention, since the reflector has the translucent cover member at the light emitting portion thereof, the semiconductor light emitting element can be protected and the charging portion can be covered, and the reliability is high. A lighting device can be provided. Moreover, since the cover member and the lens body are integrally provided, the lens body is not detached from the reflector, and the charging unit is not undesirably exposed.

  According to the invention described in claim 3, since the light-transmitting cover member has the light emitting part formed transparently and the brightness increasing means is formed in the other part, the brightness around the transparent light emitting part is increased. Therefore, it is possible to provide a lighting device that can suppress the occurrence of glare.

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

  As shown in FIGS. 1 to 4, the illumination device 10 according to the present embodiment includes a plurality of semiconductor light emitting elements 11 serving as a light source, a base 12 on which the semiconductor light emitting elements are disposed, a plurality of reflectors 13 disposed on the base, and a reflection. The lens body 14 is arranged on the body.

  The semiconductor light emitting element 11 is composed of a light emitting diode (hereinafter referred to as “LED”), and the LED 11 is provided with six white LEDs having the same color, in this embodiment, high brightness and high output. It is composed of the same kind of performance in which light rays are mainly emitted in one direction, that is, in the direction of the optical axis of the LED.

  The base 12 is composed of a case member 12a and a circuit board 12b. The case member 12a is made of white synthetic resin having light resistance, heat resistance and electrical insulation, in this embodiment, PBT (polybutylene terephthalate) at one end. It is composed of a disk-shaped member having an opening 12c and having a space 12d formed therein. On the surface side of the case member 12a, a plurality of "mortar-shaped" recesses 12e having the same shape and dimensions, the white inner surface forming a paraboloidal shape, expanding in the surface side, in this embodiment Six pieces are integrally formed so as to be equidistantly arranged concentrically.

  As a result, the reflector 13 is formed integrally with the base body 12 with the opening of the recess 12e serving as the light emitting portion 13a and the inner surface forming the paraboloid of revolution as the reflecting surface 13b. The reflector 13 is configured to have a large light distribution angle so that a lens body 14 (to be described later) can be fitted and attached, and a through hole 13c is formed on the bottom surface thereof.

  The circuit board 12b is formed of a disk-shaped wiring board, and six LEDs 11 are mounted by being arranged at equal intervals in concentric circles so as to face the six reflectors 13 formed concentrically.

  The circuit board 12b on which the LED is mounted is fitted into the opening 12c of the case body 12a and fixed and supported by an adhesive such as silicone resin, whereby each LED 11 has a through-hole 13c formed on the bottom surface of each reflector 13. It is arranged through. Thereby, the reflector 13 is provided facing each LED 11 disposed on the substrate 12 in a state where the optical axis of the reflector 13 and the optical axis of the LED 11 are substantially coincident with each other.

  The lens body 14 is configured by a total reflection type lens having a small light distribution angle so that the lens body 14 can be fitted to and mounted on the reflector 13 having a large light distribution angle. That is, a concave portion 14a for housing the LED 11 is formed on the bottom surface constituting the light incident portion, and the side peripheral wall 14c connecting the circular light emitting portion 14b and the concave portion 14a is reflected to form a rotating paraboloid of the reflector 13. It is formed in a shape that substantially matches the surface 13b. The light emitting portion 14b is integrally formed with a collar portion 14d, and when the lens body 14 is fitted into the reflector 13, the collar portion is locked to and supported by the opening serving as the light emitting portion 13a of the reflector. To do. Thus, a gap s is formed between the reflection surface 13b of the reflector and the side peripheral wall 14c of the lens body, and the total reflection function of the lens caused by close contact is prevented from being lowered. At the same time, the lens 11 protects the LED 11 located at the bottom of the reflector 13 and covers the charging part.

  In this state, the lens body 14 can be attached to and detached from the reflector 13, but may be fixed with a transparent adhesive. In this embodiment, it is possible to attach and detach without bonding.

  A plurality of the lens bodies 14 configured as described above are prepared, and four in the present embodiment. In order to obtain various light distribution characteristics, whether or not the lens bodies 14 are attached to the reflector 13 including the six recesses 12e is appropriately determined. It is possible to select and attach the necessary number of lens bodies 14 so that the lens bodies 14 can be freely attached to and detached from the reflectors 13 at any position.

  Therefore, the present inventors conducted the following experiment in order to confirm the light distribution characteristics in the illumination device 10 configured as described above.

  In other words, the reflector 13 is a reflector having a characteristic indicated by the graph X in FIG. The lens body 14 is composed of a total reflection lens having a characteristic indicated by the graph Y in FIG. 4A and having an emission angle of the central luminous intensity at a half beam angle of about 30 °. FIG. 4 is a graph showing a light distribution pattern from the relationship between the emission angle θ1: 0 to 60 ° (see (FIG. 2B)) and the luminous intensity (cd).

  Whether or not the lens body 14 is attached to the reflector 13 is selected and combined to form various illumination devices. That is, as shown in FIG. 3, a lens body is fitted into two opposing reflectors out of six reflectors. FIG. 3 (a). Three lens bodies at regular intervals. 3 (b), FIG. 3 (c) in which four lens bodies are fitted facing each other, and a lens body in which all six reflectors are fitted, and a lens body. What was comprised only with the reflector was not comprised, but the light intensity in each output angle 0-60 degrees was measured, and the light distribution pattern was confirmed.

  The result is FIG. 4B, and graphs a to e are light distribution patterns in the illumination device in which the reflector 13 and the lens body 14 are combined as shown in Table 1 below.

以上の実験結果から明らかなように、レンズ体１４を反射体１３に対して装着するか否かを選択して組み合わせることにより、各種の配光特性が得られることが確認された。

As is clear from the above experimental results, it was confirmed that various light distribution characteristics can be obtained by selecting whether or not the lens body 14 is attached to the reflector 13 and combining them.

  The illumination device 10 having the above configuration is used as a light source unit such as a downlight or a spotlight according to various light distribution patterns. Next, the configuration of the downlight using the illumination device will be described.

  As shown in FIG. 5, the downlight 20 includes an instrument body 21, a light source unit 22, a power source unit 23 for turning on the light source, a power terminal block 24 that supplies power to the power source unit, and a decorative frame 25.

  The instrument main body 21 is provided with a light source part 22 at one end and a power terminal block 24 at the other end, and is a heat conductive aluminum having a cylindrical body open at both ends for accommodating the power source part 23 inside. Consists of. Moreover, the instrument main body 21 is located on the opening 21a side of one end portion inside the cylindrical body, and is formed with a partition plate 21b integrally, and includes a recess for housing the light source unit 22 between the opening and the partition plate. The storage portion 21c is integrally formed.

  The light source unit 22 is configured by housing the lighting device 10 described above. That is, in this embodiment, since the central portion of the room is mainly illuminated as a light source for downlights, “Table 1” N 0. The illumination device having the configuration of FIG. 3B in which the three lens bodies in 2 are fitted is employed.

  In the illumination device having the above configuration, the outer surface of the circuit board 12b of the base 12 is brought into close contact with the partition plate 21b of the instrument body 21 through an insulating sheet made of a silicone resin having thermal conductivity and electrical insulation, etc. It is supported by fixing means such as screws and stored in the light source unit 22.

  Thereby, the optical axis of the illuminating device 10 coincides with the central axis of the instrument main body 21 made of a cylindrical body, and the light emitting portion 13a of the reflector 13 is disposed on the inner side of the decorative frame 25 as a whole. A light source unit 22 having a substantially circular light emitting surface in plan view is configured. At the same time, the lens body 14 fitted and attached to the reflector 13 engages the collar 14d with the light emitting portion 13a of the reflector, and the surface of the lens body 14 is a transparent acrylic resin provided on the decorative frame 15. In contact with the inner surface side of the cover member 25a made of, the lens body 14 is fixed without being detached from the recess 12e of the reflector 13, the LED 11 is protected by the lens body 14 and the charging part is covered, Each LED 11 of the reflector 13 to which the lens body 14 is not fitted is protected by the cover member 25a, and the charging part is covered. Further, the circuit board 12b and the partition plate 21b are thermally connected and fixed.

  The power supply unit 23 has a lighting circuit for lighting the lighting device 10 housed in the light source unit 22 of the fixture main body 21 as described above, and is connected to the lighting device 10 by a lead wire w1 and is connected to the power supply terminal block 24. 100V commercial power is supplied via

  In the figure, reference numeral 26 denotes a support for installing the downlight on the ceiling or the like, which is composed of two substantially L-shaped leaf springs formed by pressing a stainless steel plate material. It fixes to the outer surface of the main body 21 so as to face the radial direction.

  As described above, the lighting device 10 in this embodiment is incorporated in the light source unit 22 at one end, the power terminal block 24 is disposed at the other end, and the power unit 23 is accommodated therein, and the height dimension H is about 84 mm. The downlight 20 is configured to be driven by AC100V with a decorative frame diameter dimension D1 of about 88 mm, an instrument body diameter dimension D2 of about 65 mm, and a power consumption of 5 W.

  The downlight having the above-described configuration is installed by connecting a single or a plurality of downlights to a ceiling or the like, which is an installation surface, using a feeding cable. When lit, each LED 11 emits light, and the light emitted from the LED is emitted from the light emitting portion 13a while being reflected by the reflecting surface 13b of the reflector 13. At the same time, in the reflector 13 in which the lens body 14 is fitted, the light emitted from the LED 11 is taken in from the concave portion 14a of the incident portion of the total reflection type lens, and is totally reflected by the side peripheral wall 14c of the lens, and from the light emitting portion 14b. Radiated and mixed with the light emitted from the reflector 13, the light distribution pattern as shown in the graph b of FIG. 4B, that is, the central luminous intensity is relatively high, and the change in luminous intensity is relatively large around the periphery. Illumination with a light distribution characteristic as a downlight that has relatively low light distribution characteristics and a relatively bright central part of the room and gradually darkens the surroundings.

  Further, in the case where only an exhibit is illuminated in a spot or the like in a store or the like, the configuration shown in FIG. 3C in which the center luminous intensity is higher and N0.3: 4 lens bodies in “Table 1” are fitted. No. 1 of “Table 1” in which the light distribution pattern is the illumination device of the graph c and the central luminous intensity is further increased. 4: A light distribution pattern configured by fitting a lens body into all the reflectors employs an illuminating device having a graph d.

  Furthermore, in the case where the entire room is illuminated with uniform brightness, the light distribution pattern has the configuration shown in FIG. 3A in which N0.1: 2 lens bodies in “Table 1” are fitted, and the central luminous intensity is low. No. of “Table 1” in which the illumination device of graph a and the central luminous intensity are further reduced. 5: Employs an illuminating device having a light distribution pattern composed only of reflectors and having a graph e.

  As described above, the lighting device having the light distribution performance shown in “Table 1” is configured in advance according to the lighting environment to be installed, and the lighting fixtures are selected and installed according to the on-site situation. In addition, when the lighting environment is changed after installation, a plurality of lens bodies 14 are prepared, the lens bodies are removed at the installation site, the number to be used and the arrangement location are appropriately selected, and the lighting conditions are necessary. By fitting a suitable number of lens bodies to the plurality of reflectors 13 while selecting whether or not they need to be mounted, a luminaire adapted to the changed lighting environment is constructed on site each time.

  As described above, according to the present embodiment, by providing a plurality of lens bodies 14 and selecting whether or not to attach to the plurality of reflectors 13, light distribution characteristics suitable for various illumination environments can be obtained. Can do. In addition, a desired light distribution characteristic can be easily created by a simple operation of simply fitting the lens body 14 into the reflector 13. Furthermore, even when the lighting environment is changed after installation, the lens body 14 can be attached and detached at the site, and the number and location of use can be selected as appropriate, so that the lighting environment can be adapted to the changed lighting environment. In addition, the light distribution can be changed each time according to the atmosphere. Furthermore, it is possible to provide a variety of lighting fixtures having various and various light distribution characteristics.

  Further, since the reflector 13 is constituted by the concave portion 12e and the lens body 14 is fitted and attached to the concave portion, the lens body can be reliably supported, stable optical performance can be exhibited, and the total reflection type Thus, it is possible to use an effective lens without loss of light.

  When a lineup of instruments having various light distribution performances is provided, the reflector 13 and one type of lens body 14 may be configured, and the same number of reflectors and lens bodies as the type of light distribution performance desired for each instrument. Therefore, it is possible to provide a cost-effective lighting device.

  As described above, in the present embodiment, the base 12 is configured by the case member 12a and the circuit board 12b. However, as illustrated in FIG. 6A, the case member may be omitted and may be configured by only the circuit board 12b. In this case, a single mortar-shaped reflector 13 'made of a synthetic resin such as PBT is separately formed separately from the circuit board, and each of the LEDs 11 mounted on the circuit board is opposed to each of the silicone. Fix and support with an adhesive such as resin.

  Although the lens body 14 is composed of a total reflection type lens, as shown in FIG. 6B, the lens body 14 is composed of a convex lens 14 ′ having a convex shape on the outside or the inside, and is fitted into the recess 12 e of the reflector 13. Instead, it may be arranged and mounted so as to face the light emitting portion 13a of the reflector. Alternatively, a convex lens 14 ′ may be selected on the outer side or the inner side, and the outer convex and inner convex lenses may be combined with each reflector 13 so as to face each other.

  Although the light distribution angle of the reflector 13 is increased and the light distribution angle of the lens body 14 is decreased, the light distribution angle of the reflector may be decreased to increase the light distribution angle of the lens body.

  Moreover, as shown in FIG. 7, you may comprise the LED light bulb 30 using the light emitting diode which can be substituted to the incandescent light bulb for general illumination.

  That is, the LED bulb 30 includes a light source unit 31 incorporating the lighting device 10 of the present embodiment, a cover member 33 that houses the lighting device 32, and a base 34. The base 34 is formed of, for example, an E26 type base that can be attached to a socket for an incandescent light bulb for general illumination. According to this LED bulb, it is possible to configure LED bulbs having various light distribution characteristics, and it is possible to realize a light distribution pattern suitable for various illumination environments by a simple operation only by replacing the bulb. Become.

  The illumination device 10 of this embodiment is provided with a light-transmitting cover member for covering the charging portion of the semiconductor light emitting element in the light emitting portion of the reflector, and the lens body is integrally formed on the cover member. The configuration will be described with reference to FIG. In FIG. 8, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the figure, reference numeral 15 denotes a cover member made of a transparent acrylic resin, which is configured to have a disk shape covering all the six reflectors 13 on the surface side of the case member 12a in the base 12 having a disk shape. The cover member 15 integrally forms a total reflection-type lens body 14 at a portion facing the light emitting portion 13a of one reflector 13 located at the center. Further, the cover member 15 faces the light emitting portions 14b of the five reflectors and the central lens body by performing frost processing except for the portions facing the light emitting portions 13a of the six reflectors 13. The part is transparent, and the other part is subjected to a light diffusing means, that is, a brightness increasing means 15a by frosting so that the brightness of the part is increased.

  The lens body 14 has an inclined portion 14e integrally formed at the boundary between the cover member 15 and the lens body 14 in the vicinity of the light emitting end of the reflecting surface, in other words, and integrally formed with the inclined portion 14e. A part is introduced into the cover member 15 so that the luminance of the portion to which the luminance increasing means 15a is applied becomes higher.

  The cover member 15 configured as described above is detachably attached to the surface side of the case member 12a of the base body 12, and can be attached or detached to obtain necessary light distribution characteristics. In addition, you may adhere with an adhesive agent after mounting | wearing similarly to Example 1. FIG.

  The illuminating device 10 having the above configuration is incorporated into the light source unit 22 in the same manner as in the first embodiment to form a downlight (not shown). That is, when obtaining a light distribution characteristic having a relatively high central luminous intensity and a relatively small variation in luminous intensity around the periphery, the cover member 15 is attached to the surface side of the base 12 and the lens body 14 is attached to the reflector 13 in the central part. A lighting device is constructed in which a lens body is fitted at the center and five reflectors are arranged at equal intervals around the lens body (FIG. 8A). Thereby, the light distribution characteristic close | similar to the graph b of FIG.4 (b) of Example 1 can be acquired.

  Further, in the case where the central luminous intensity is low and the entire room is illuminated with uniform brightness, the illumination device is configured with only the six reflectors by removing the cover member 15. Thereby, the light distribution characteristic substantially the same as the graph e of FIG.4 (b) can be acquired.

  At this time, the total reflection type lens 14 is integrally formed on the cover member 15, and the inclined portion 14e is integrally formed in the vicinity of the light emitting end on the reflection surface, so that a part of the light incident on the lens body is formed. Is introduced into the cover member 15, and the portion where the light diffusing means is applied, that is, the portion other than the light emitting portion is brilliant and the luminance is increased. As a result, the brightness of portions other than the light emitting portion is increased, the contrast is lowered as a whole, and the occurrence of unpleasant glare is suppressed.

  Incidentally, in the case of the reflector method, different light distribution can be obtained by changing the processing of the reflecting surface (mirror surface, semi-mirror surface, white color, etc.) with one mold, but it is uncomfortable because only the reflecting surface portion of the device shines. There is a problem that easily causes glare. In the case of the lens body method, a plurality of lens bodies can be integrally molded, and the portions other than the light emitting portion of each lens can be frosted to increase the brightness other than the lens portion, thereby making it difficult to cause discomfort glare. Basically, since only one type of light distribution performance can be obtained with one mold, when the lineup includes a plurality of light distribution performances, the same number of molds as the type of light distribution performance desired are required.

  As described above, according to the present embodiment, by providing the cover member 15 integrally formed with the lens body 14 and attaching and detaching the cover member, it is possible to obtain light distribution characteristics suited to various illumination environments. In addition, a desired light distribution characteristic can be easily created by a simple operation of simply attaching and detaching the cover member 15. Furthermore, even when the lighting environment is changed after installation, it is possible to adapt to the changed lighting environment while observing the lighting conditions at the site. In addition, the light distribution can be changed each time according to the atmosphere.

  Since the cover member 15 has the light emitting part formed transparently and the brightness increasing means 15a is formed in the other part, the brightness of the peripheral part of the light emitting part can be increased and the occurrence of glare can be suppressed. it can.

  When lineup of appliances having various light distribution performances, it is possible to provide an illuminating device in which the number of molds is suppressed and unpleasant glare is unlikely to occur.

  Moreover, since it has the cover member 15 in a light-projection part, each LED11 can be protected and a charging part can be covered, and a safe illuminating device can be provided. Furthermore, since the cover member and the lens body are integrally provided, the lens body is not detached from the reflector, and the charging unit is not undesirably exposed.

  As described above, in the present embodiment, one lens body 14 is formed in the portion corresponding to the reflector 13 in the center, but as shown in FIG. 3 of the first embodiment, a cover in which two lens bodies are integrally formed. A cover member formed integrally with three lens bodies, a cover member formed integrally with four lens bodies, and a cover formed integrally with six lens bodies corresponding to all six reflectors A cover member that does not form a member or a lens body may be further prepared, and each cover member may be replaced to obtain various light distribution patterns shown in “Table 1” of Example 1.

  The cover member 15 has a light emitting part formed transparently, and a brightness increasing means 15a by a light diffusing means is formed in the other part. However, the light diffusing means such as frost processing is not particularly formed, and light is introduced. For example, the inclined portion 14e may not be formed. In this case, the light transmittance of the cover member 15 is about 90%, and the remaining 10% of light leaks to the surroundings, so that the portion other than the light emitting portion of the cover member 15 can also shine, and the brightness can be increased. Similarly, the occurrence of glare can be suppressed.

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

  In the illumination device 10 of the present embodiment, the light control means including the reflector and the lens body is configured to be rotatable with respect to the circuit board on which the LED is mounted, and the light control including the optical axis of the LED, the reflector, and the lens body. The position of the optical axis of the means is adjusted, and the configuration thereof will be described below with reference to FIG. 9 showing a downlight incorporating the illumination device of this embodiment. In FIG. 9, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the figure, reference numeral 40 denotes a rotating shaft that is integrally supported on the inner surface central portion of the case member 12a of the base 12 and penetrates the partition plate 21b when the lighting device 10 is incorporated into the light source unit 22, and is installed on the partition plate. The motor 41 is connected to a drive unit 41 including a reduction mechanism such as a motor and a gear. The motor of the drive unit 41 is composed of a stepping motor, and is configured to rotate forward and backward at an angle interval of 1 ° by a reduction mechanism.

 The opening 12c of the case member 12a is loosely fitted and supported without being fixed to the circuit board 12b, and each LED 11 of the circuit board 12b is mounted over a predetermined angle by the driving unit 41 connected to the rotating shaft 40. It is configured so that forward and reverse rotation can be performed in a plane parallel to the surface.

 In the figure, reference numeral 42 denotes a forward rotation push switch provided on the side surface of the instrument body 21, and 43 denotes a reverse rotation push switch. When each is pressed once, the motor rotates forward and backward at intervals of 1 °.

 According to the illumination device configured as described above, the positions of the optical axis of the LED and the optical axis of the light control means including the reflector and the lens body are adjusted by pressing the forward push switch 42 and the reverse push switch 43. can do.

 That is, as shown in FIG. 10 (a), from the state where the optical axis of the LED 11 and the optical axis of the light control means comprising the reflector 13 and the lens body 14 are substantially coincided with each other, FIG. As shown in the figure, when the angle is rotated forward by 10 °, the respective optical axes shift and move to change the light distribution.

 On the contrary, when it is installed with a deviation as shown in FIG. 5B due to manufacturing variations or the like, the angle can be reversed by 10 ° and returned to the state shown in FIG.

 As described above, according to the present embodiment, it is possible to easily obtain the light distribution characteristic according to the specification application requested by the user by rotating the light control means including the reflector 13 and the lens body 14. Further, it is possible to easily adjust the manufacturing variation. Further, by continuously rotating, different light distributions can be obtained.

 In the present embodiment, the light control means including the reflector 13 and the lens body 14 is configured to be rotated by a motor, but may be configured to be manually rotated.

 Although the light control means composed of the reflector and the lens body is rotated, the light control means only for the reflector 13 or the light control means only for the lens body 14 may be rotated. Moreover, although the case member 12a was rotated, you may rotate the circuit board 12b, ie, the LED side which is a light source part conversely. Furthermore, although the illuminating device 10 shown in Example 1 was rotated, you may make it rotate the illuminating device 10 which has the cover member 15 shown in Example 2 similarly to the above.

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

 The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

The perspective view which shows the illuminating device which concerns on 1st embodiment of this invention. The lighting device is similarly shown, (a) is a plan view, and (b) is a cross-sectional view along the AA line of (a). The lighting device is also shown, (a) is a plan view showing a state where two lens bodies are used, (b) is a plan view showing a state where three lens bodies are used, and (c) is a case where four lens bodies are used. The top view which shows the state which carried out. The graph which shows the experimental result for confirming the light distribution characteristic of an illuminating device similarly, (a) is the graph which showed the relationship between the output angle of a reflector and a lens body, and a luminous intensity, (b) is a lens body with a reflector. The graph which measured the relationship between the emission angle and luminous intensity when mounting | wearing was selected and arrange | positioned. The longitudinal cross-sectional view of the downlight which similarly used the illuminating device for the light source part. The modification of an illuminating device is similarly shown, (a) is a longitudinal cross-sectional view which shows a 1st modification, (b) is a longitudinal cross-sectional view which shows a 2nd modification. Sectional drawing which shows the LED bulb which similarly used the illuminating device for the light source part. The illuminating device which concerns on 2nd embodiment of this invention is shown, (a) is a top view, (b) is sectional drawing which follows the AA line of (a). The longitudinal cross-sectional view of the downlight which used the illuminating device which concerns on 3rd embodiment of this invention for the light source part. The lighting device is also shown, (a) is a plan view without rotation, (b) is a plan view showing a rotated state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Semiconductor light emitting element 12 Base | substrate 12e Recessed part 13 Reflector 14 Lens body 15 Cover member 15a Brightness raising means

Claims (3)

A plurality of semiconductor light emitting devices;
A substrate on which a semiconductor light emitting element is disposed;
A reflector formed of a plurality of recesses formed on the substrate and facing each semiconductor light emitting element;
A lens body that is selectively mounted in the recesses of the reflectors;
An illumination device comprising: The lighting device according to claim 1, wherein the reflector has a light-transmitting cover member at a light emitting portion thereof, and the lens body is formed integrally with the cover member. The lighting device according to claim 1, wherein the translucent cover member has a light emitting portion formed transparently and a brightness increasing means formed in another portion.

Images