JP2008287994A - Illuminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illuminating device capable of radiating heat from LEDs sufficiently while making the device thinner, and capable of acquiring uniform light by reducing variations in light amount and lighting color and reducing the glare. <P>SOLUTION: The illuminating device having a plurality of LEDs is provided with a support for mounting and supporting the plurality of LEDs, and installing and supporting a power supply circuit for turning the plurality of LEDs on, and the plurality of LEDs and/or the power supply circuit is housed in the support. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illumination device using a light emitting diode (hereinafter referred to as LED) as a light source.

  Conventionally, incandescent bulbs and fluorescent lamps are mainly used as light sources for indoor or outdoor illumination. In recent years, instead of these light sources, illumination devices using LEDs as light sources have been used. Lighting devices using LEDs have the characteristics of low power consumption, long life, excellent impact resistance, small size and light weight compared to incandescent bulbs and fluorescent lamps. there's a possibility that.

  The lighting device using LEDs has a small LED as a light source. Compared with incandescent bulbs and fluorescent lamps by devising the arrangement of a plurality of LEDs and circuit parts constituting a circuit for lighting the plurality of LEDs. Therefore, it can be made thinner.

  The illumination device disclosed in Patent Document 1 is one form of a conventional illumination device that uses LEDs as light sources. A substrate on which a plurality of LEDs are mounted is held inside the exterior material via a metal reinforcing member that is in contact with a part of the substrate, and the LED is lit in the space between the substrate and the exterior material. Thinning of the lighting device is realized by accommodating circuit components such as electronic components and electric components constituting the circuit to be performed.

  Further, in the LED, unlike incandescent bulbs and fluorescent lamps, glare is a problem because light emission has directivity and high-luminance light is emitted from a small LED. Furthermore, there are variations in the amount of light and / or the light color of the LEDs, and in the case of using a plurality of LEDs, there is a possibility that non-uniform light is generated. Therefore, when light is directly irradiated without using a reflector or the like, there is a problem that the non-uniformity of the light is conspicuous.

  In order to reduce such glare and reduce the variation in light quantity and light color to obtain uniform light, a configuration in which the light emitted from the LED is reflected directly on the reflector instead of being directly irradiated is considered. It is done.

As this configuration, there is an example in which LEDs are used for a taillight, a stoplight, etc. of a vehicle (see Patent Document 2). In Patent Literature 2, a lamp body having a reflection surface formed on the inner surface, a front lens provided with a recursive reflector portion formed on a part of the inner surface so as to close the opening of the lamp body, and the front surface of the lamp body A support member disposed at a peripheral edge of the opening end; and an LED provided on the support member so as to direct the direction of the reflection surface. Light from the LED is directed toward the front lens by the reflection surface. The light is reflected and guided to the light transmitting part of the front lens.
JP 2004-303614 A Japanese Utility Model Publication No. 61-183004

  As described above, the illuminating device disclosed in Patent Document 1 shows one form of a thin illuminating device, but directly irradiates light from the LED, and has reduced glare and light uniformity. It is not a form formed. Although not described in the specification, there is a possibility that a part of the heat generated from the LED is transmitted to the exterior material via an auxiliary member that contacts a part of the substrate. However, even in such a case, heat radiation from the LED on the substrate that is not in contact with the auxiliary member is not sufficient, and there is a possibility that the temperature may locally become high in a part of the substrate.

  In addition, when LEDs are used for illumination, a larger amount of light is required than when used for vehicle taillights and stoplights as in Patent Document 2, and a large number of LEDs are mounted on the substrate accordingly. The amount of heat also increases. Since the temperature of the LED rises according to the amount of heat generated, the sealing resin is rapidly deteriorated, the life characteristics of the LED are deteriorated, the light emission efficiency is lowered, and it is difficult to secure a necessary amount of light. Therefore, it is necessary to make the lighting device have a structure with good heat dissipation.

  This invention is made | formed in view of such a situation, and it aims at providing the illuminating device which can fully radiate the heat | fever from LED, aiming at thickness reduction. Furthermore, it aims at providing the illuminating device which can obtain uniform light by reducing the glare and reducing the variation in light quantity and light color by reflecting and irradiating the light from the LED. .

  The lighting device according to the present invention includes a plurality of LEDs mounted on and supported by the lighting device, and a support body that mounts and supports a power supply circuit that lights the plurality of LEDs. The LED and / or the power supply circuit are accommodated in a support.

  With this configuration, the lighting device according to the present invention can be thinned by effectively using space by arranging a plurality of LEDs and / or power supply circuits at appropriate positions on the support.

  A lighting device according to the present invention is a lighting device including a plurality of LEDs, a bent support body that supports a plurality of LEDs directly or indirectly, and a power supply circuit that lights the plurality of LEDs. The plurality of LEDs and / or power supply circuits are housed in a space formed by bending the support.

  With this configuration, the lighting device according to the present invention can be thinned by effectively using the space by arranging a plurality of LEDs and / or power supply circuits in the space formed by bending the support.

  The lighting device according to the present invention is a lighting device including a plurality of LEDs, and includes a support body that directly or indirectly mounts and supports the plurality of LEDs. A lighting device characterized in that the lighting device is housed in a support so that it is not directly irradiated.

  With this configuration, the lighting device according to the present invention can be thinned by effectively using space by arranging a plurality of LEDs at appropriate positions on the support so that light is not directly irradiated to the outside. It is possible to prevent a person from feeling glare (glare of light source LED) and light non-uniformity.

  In the illumination device according to the present invention, the support further includes a rectangular plane and two side surfaces extending opposite to each other in a direction substantially perpendicular to both end edges of the rectangular plane, and a plurality of LEDs are arranged on the rectangular plane. It is characterized by being.

  With this configuration, the illuminating device according to the present invention includes a rectangular flat surface on which the LEDs are arranged and two side surfaces that extend in opposite directions from both ends of the rectangular flat surface so as to illuminate. The heat dissipation area is increased while suppressing the increase in size of the device, and the heat generated by the LED is efficiently transferred to the two side surfaces connected to both ends of the rectangular plane, and the heat is dissipated from the two side surfaces to the outside. Therefore, heat dissipation can be made better.

  The illumination device according to the present invention is further characterized in that the support radiates heat from the plurality of LEDs.

  With this configuration, in the lighting device according to the present invention, the support body can mount and support a plurality of LEDs and / or a power supply circuit that lights the plurality of LEDs, and can radiate heat generated from the plurality of LEDs. .

  The illuminating device according to the present invention is further characterized in that the support is provided with a reflecting portion that reflects light from the plurality of LEDs.

  With this configuration, the lighting device according to the present invention scatters the light from the LED inside the support that supports the plurality of LEDs, thereby reducing glare and reducing variations in the amount of light and light color. Uniform light can be obtained.

  The illumination device according to the present invention is further characterized in that the reflection part is a diffusive reflection part, and reflects and scatters light from a plurality of LEDs.

  With this configuration, the lighting device according to the present invention causes light from a plurality of LEDs to be diffusely reflected by the reflection unit, so that the light from the plurality of LEDs is mixed, thereby reducing glare more effectively. Light can be made uniform.

  The illuminating device according to this configuration further includes two bases to be attached to a fixture for a fluorescent lamp, and the support is a connection body between the bases.

  With this configuration, the illumination device according to the present invention includes two bases to be attached to the fixture for a fluorescent lamp, and thus can be attached to a conventional fixture for a straight tube fluorescent lamp. Moreover, since the connection body between the caps is used as a support, heat can be dissipated over substantially the entire length of the lighting device, and heat dissipation can be further improved.

  As described above in detail, according to the present invention, it is possible to sufficiently dissipate heat from the LED while reducing the thickness. Further, by reflecting and irradiating the light from the LED, the glare can be reduced and the variation in the amount of light and the light color can be reduced to obtain uniform light.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
1 is an external view of a lighting apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG.

  Referring to FIG. 2, the support 1 is an elongated bowl-shaped bent shape, and is downward in a direction orthogonal to the rectangular plane 1 a forming a rectangle and both lateral edges of the rectangular plane 1 a. It has two rectangular side surfaces 1b that extend. The support 1 is made of aluminum having excellent thermal conductivity. On the rectangular flat surface 1a of the support 1, two LED substrates 3 on which a plurality of LEDs 2 are mounted are disposed on the entire surface of the non-mounting side surface (the surface opposite to the surface on which the LEDs 2 are mounted). For example, they are fixed by screws or the like.

  FIG. 3 is a schematic view of the LED substrate 3. As shown in the drawing, a plurality of LEDs 2 connected in series are arranged in parallel on an LED substrate 3 made of epoxy resin containing glass fibers.

  FIG. 4 is a schematic diagram of the LED 2. FIG. 4A shows an enlarged view of the LED 2 indicated by a rectangle in FIG. 3, and FIG. 4B shows a side view of the LED 2. As shown in FIG. The LED 2 is a surface-mounted LED including an LED element, a holding portion 2a that holds the LED element, a sealing resin that seals the LED element, and input and output electrodes 2b and 2c. The holding portion 2a of the LED 2 has a truncated cone-shaped concave portion 2e having a diameter reduced toward the fixed surface on the surface 2d side opposite to the fixed surface fixed to the substrate 3. An LED element is fixed to the bottom surface of the recess 2e, and the peripheral surface of the recess 2e has a reflector function. In the case of a white LED, a phosphor is dispersed in the sealing resin.

  Between the LED substrate 3 and the support 1, a heat conductive sheet 4 made of a heat conductive resin (for example, polyphenylene sulfide resin) is interposed. Thereby, the heat generated in the LED 2 is transmitted from the entire surface of the non-mounting side of the LED substrate 3 to the support 1 through the heat conductive sheet 4. For example, when a circuit is formed on the LED substrate 3 by conducting through a through hole or the like, an insulating material is used for the heat conductive sheet 4 in order to insulate between the LED substrate 3 and the support 1. It is preferable.

  As shown in FIG. 2, the support 1 has a curved surface curved in a tunnel shape so as to cover the LED substrate 3 on which the LED 2 is mounted, and is made of a polycarbonate resin glove having excellent impact resistance and heat resistance. 5 is attached. On the inner surface of the globe 5, there is provided a microlens sheet 6 on which a large number of minute lenses are formed so as to diffuse light so that the light irradiated through the globe 5 is uniform. Therefore, light does not reach the user directly by the globe 5 or the like, but is diffused, and light with reduced glare and nonuniformity due to variations in the characteristics of the LED 2 can be obtained.

  On the other hand, a power supply circuit board 70 on which the power supply circuit component 7 is mounted is attached to the space inside the support 1 that is bent and has a bowl shape, and a rectangular resin is formed at the open end of the support 1. The cover plate 8 is fitted inside. Therefore, since the power supply circuit component 7 and the power supply circuit board 70 are disposed inside the support 1, the space can be effectively utilized to reduce the thickness.

  Bases 91 and 92 are fixed to both ends in the longitudinal direction of the support 1 to which the globe 5 and the cover plate 8 are attached. The base 91 is provided with a pair of mounting pins 91a and 91b which can be mounted on a socket for a straight tube fluorescent lamp. Similarly, the base 92 is provided with mounting pins 92a and 92b that can be mounted on a socket for a straight tube fluorescent lamp. These mounting pins 91a, 91b, 92a, 92b are connected to the power supply circuit component 7 through different leads.

  FIG. 5 is an electric circuit diagram of the lighting device including the power supply circuit component 7. One full-wave rectifier 71 is connected between the mounting pins 91 a and 91 b of the base 91, and the other full-wave rectifier 72 is connected between the mounting pins 92 a and 92 b of the base 92.

  One end of an LED light emitting unit 20 composed of a plurality of LED series circuits including a resistor 20a and an LED 2 is connected to the anode side of the full-wave rectifying units 71 and 72. Furthermore, one end of a resistor 73a is connected to the anode side of the full-wave rectifying units 71 and 72.

  One end of a series circuit formed by connecting a transistor 73b and a resistor 73c in series is connected to the other end of the LED light emitting unit 20. One end of a series circuit in which two diodes 73d and 73d are connected in series is connected to the other end of the resistor 73a. Furthermore, one end of a resistor 73e is connected to the other end of the resistor 73a. The other ends of the resistor 73c, the diode 73d, and the resistor 73e are connected to the cathode sides of the full-wave rectifying units 71 and 72, respectively.

  The transistor 73b has a collector electrode connected to the LED series circuit and an emitter electrode connected to the resistor 73c. The base electrode of the transistor 73b is connected to the connection point between the resistor 73a and the resistor 73e. As described above, the constant current unit 73 is configured to keep the base voltage of the transistor 73b constant and the forward current of the LED 2 constant.

  The lighting device configured as described above is mounted on the socket for a straight tube fluorescent lamp with mounting pins 91a, 91b, 92a, 92b so that the globe 5 side is in the irradiation direction, for example, mounting pins 91a, 92a. Is connected to commercial power. In this state, when the power is turned on, an alternating current is supplied to the power supply circuit component 7 through the mounting pins 91a and 92a, and the direct current rectified by the full-wave rectifying units 71 and 72 is converted into the LED light emitting unit 20. LED2 is turned on.

  Further, in the lighting device according to the present embodiment, the heat generated by the LED 2 along with the light emission of the LED 2 is transmitted to the rectangular flat surface 1a of the support 1 through the LED substrate 3 and the heat conductive sheet 4, and the rectangular Heat is radiated to the outside from the two rectangular side surfaces 1b extending from both ends of the plane 1a.

  Since the LED substrate 3 is in contact with the rectangular flat surface 1a through the heat conductive sheet 4 over the entire surface on the non-mounting side, heat transfer is facilitated by a large heat transfer area, and the heat of the LED 2 is reduced. Sufficient heat can be dissipated.

  In addition, two rectangular side surfaces 1b extending from both ends of the rectangular plane 1a of the support 1 are exposed to the outside, and heat transferred from the LED substrate 3 to the rectangular plane 1a passes through the two rectangular side surfaces 1b of the support 1. Since heat is efficiently radiated to the outside, heat dissipation can be further improved.

  In addition, the mounting pins 91a, 91b, 92a, 92b of the bases 91, 92 can be attached to the socket for the straight tube fluorescent lamp, and since the connection body between the bases 91, 92 is used as the support body 1, Heat can be dissipated over substantially the entire length, and heat dissipation can be improved.

(Embodiment 2)
FIG. 6 is a perspective view showing an illumination device according to Embodiment 2 of the present invention, and FIG. 7 is an exploded perspective view of the illumination device according to Embodiment 2. FIG.

  The support 11 has an elongated hook shape, and a base portion 11a whose cross-sectional shape perpendicular to the longitudinal direction forms a substantially U shape, and both ends parallel to the longitudinal direction of the base portion 11a are bent inward. And a bent portion 11b. The support 11 is made of aluminum having excellent thermal conductivity.

  FIG. 8 is an external view of a lighting apparatus according to Embodiment 2. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8, and FIG. 10 is a cross-sectional view taken along the line XX in FIG. As shown in FIGS. 9 and 10, the base plate 11 a of the support 11 is attached with a reflector 10 having an outer surface substantially the same shape as the inner surface of the base portion 11 a. The reflection plate 10 is an ultrafine foamed light reflection plate (for example, MCPET (registered trademark)) having optical characteristics of high total reflectance (about 98%) and high diffuse reflectance (about 95%) over the visible light region. ).

  On the rectangular plane of the bent portion 11b of the support 11 facing the reflector 10, two LED substrates 13 on which a plurality of LEDs 12 are mounted are respectively placed on the entire surface of the non-mounting side via the heat conductive sheet 14. For example, it is fixed by screws or the like.

  As shown in FIG. 7, the LED substrate 13 has a plurality of LEDs 12 arranged in a line. As shown in FIG. 10, these LED substrates 13 are attached so that one side surface of the LED substrate 13 is flush with an end surface parallel to the longitudinal direction of the bent portion 11b.

  The heat conductive sheet 14 inserted between the LED substrate 13 and the bent portion 11b of the support 11 is made of a heat conductive resin (for example, polyphenylene sulfide resin). Thereby, the heat generated in the LED 12 is transmitted from the entire surface of the LED substrate 13 on the non-mounting side to the bent portion 11 b of the support 11 through the heat conductive sheet 14. For example, when a circuit is formed on the LED substrate 13 by conducting through a through hole or the like, an insulating material is used for the heat conductive sheet 14 in order to insulate the LED substrate 13 and the support 11 from each other. It is preferable.

  Power supply circuit boards 170a and 170b are arranged on both sides of the bent portion 11b in the longitudinal direction across the LED board 13. The power supply circuit boards 170a and 170b are rectangular flat plates, and as shown in FIG. 9, one side is held by one bent portion 11b and the other side is held by the other bent portion 11b.

  Power supply circuit components 17a and 17b are mounted on the power supply circuit boards 170a and 170b, respectively. As in the first embodiment shown in FIG. 5, the lighting apparatus according to the present embodiment includes two full-wave rectifiers that rectify an alternating current into a direct current, a constant current portion that makes the forward current of the LED 12 constant, The electronic components constituting these are appropriately distributed to the power supply circuit components 17a and 17b.

  On the other hand, on the other surface of the bent portion 11b of the support 11 (the surface opposite to the surface on which the LED substrate 13 is provided), as shown in FIG. 7, a globe composed of an arcuate curved surface and three planes. 15 is attached with the curved surface facing outward. A diffusing agent that diffuses light is added to the globe 15.

  As shown in FIG. 8, bases 93 and 94 are fixed to both ends in the longitudinal direction of the support 11 to which the globe 15 is attached. The base 93 is provided with a pair of mounting pins 93a and 93b that can be mounted on a socket for a straight tube fluorescent lamp. Similarly, the base 94 is provided with mounting pins 94a and 94b that can be mounted on a socket for a straight fluorescent lamp.

  The lighting device according to the present embodiment configured as described above is mounted to the socket for a straight tube fluorescent lamp with mounting pins 93a, 93b, 94a, 94b so that the globe 15 side is in the irradiation direction. The mounting pins 93a and 94a are connected to a commercial power source. In this state, when the power is turned on, an alternating current is supplied to the power supply circuit components 17a and 17b via the mounting pins 93a and 94a, and a direct current rectified by the full-wave rectifier is supplied to the LED 12. LED12 lights up.

  11 is a cross-sectional view taken along line XI-XI in FIG. When the LED 12 is turned on, the light emitted from the LED 12 enters the reflector 10 as shown in FIGS. 10 and 11. The light incident on the reflecting plate 10 is scattered at the reflecting plate 10 as shown in the figure by being irregularly reflected in multiple stages at the interface of the ultrafine bubbles formed inside the reflecting plate 10. The light enters the globe 15 provided on the support 11. The light incident on the globe 15 is further diffused by the globe 15 and is transmitted and emitted to the outside.

  As described above, by adopting a reflection plate having a function of reflecting and diffusing light as the reflection plate 10, the reflection plate 10 can diffusely reflect light from the LEDs 12. Further, the light from the plurality of LEDs 12 is diffusely reflected by the reflecting plate 10, whereby the light from the plurality of LEDs 12 is mixed, and the glare can be reduced and the light can be made more uniform.

  Further, the LED substrate 13 is attached to the bent portion 11b so that the LED 12 faces the inner surface of the support 11, and the LED 12 cannot be directly seen from the outside. Therefore, since the light from the LED 12 is not directly irradiated to the outside of the lighting device, glare is reduced.

  Further, since the power supply circuit components 17a and 17b are arranged on both sides of the bent portion 11b in the longitudinal direction with the LED substrate 13 interposed therebetween, the thickness of the lighting device can be reduced and the thickness thereof can be reduced.

  Further, the heat generated by the LED 12 due to the light emission is transmitted to the bent portion 11b of the support 11 in which the non-mounting side surface of the LED substrate 13 is in contact with the heat transfer sheet 14, and the bent portion 11b The heat is radiated to the outside from the base portion 11a connected to one side.

  As described above, since the LED substrate 13 is in contact with the bent portion 11b through the heat conductive sheet 14 over the entire surface on the non-mounting side, heat transfer is facilitated by a large heat transfer area. At the same time, the LED 12 serving as a heat source and the base 11a of the support 11 serving as a heat radiating unit are brought close to each other, so that the heat of the LED 12 can be efficiently transmitted to the base 11a of the support 11 and radiated to the outside. The heat dissipation can be further improved.

  In the present embodiment, the LED substrate 13 is attached to the bent portion 11b of the support 11 so as to face the inner surface of the reflecting plate 10. However, the present invention is not limited to this, and both sides of the base 11a of the support 11 are provided. You may attach to a surface so that it may mutually oppose. Even in this case, the light emitted to the outside is mixed with the indirect light incident on the globe 15 after being scattered by the reflector 10 and the direct light directly incident on the globe 15, thereby reducing glare. Is possible.

  Moreover, in this Embodiment, although the reflecting plate 10 is affixed on the inner surface of the support body 11, and the light radiate | emitted from LED12 is diffusely reflected by the reflecting plate 10, it is not limited to this. Instead of using the reflector 10, the inner surface of the support 11 may be used as a reflector.

  In the first and second embodiments described above, aluminum having good thermal conductivity is used as the support material. However, any other metal having good thermal conductivity is preferably used. be able to. Moreover, not only a metal but resin etc. may be sufficient.

  Furthermore, if a strong material is used as the material of the support, there is an effect of increasing the strength of the support, which is more desirable from the viewpoint of the reliability of the lighting device. In particular, in an elongated straight tube lighting device, high strength is required between the bases (particularly near the center) due to the weight of the lighting device itself, and a material having strength is suitable.

  Moreover, although it has comprised so that the light radiate | emitted from LED may be further diffused with a globe, it is not limited to this, In order to make a globe into a condensing lens, it makes the irradiation surface side of a globe parallel to a longitudinal direction. You may comprise so that the irradiation range of an illuminating device may be limited by forming several semi-cylindrical convex parts. In this case, it is used as a downlight.

  Moreover, although the illumination apparatus that can be mounted on the socket for the straight tube fluorescent lamp has been described as an example, the present invention is not limited to this. It is also possible to configure the lighting device so that it can be attached to an existing socket for an incandescent bulb or an annular fluorescent lamp (for example, a Circline (registered trademark) type fluorescent lamp).

  Furthermore, it goes without saying that the present invention can be implemented in variously modified forms within the scope of the matters described in the claims.

It is an external view of the illuminating device which concerns on Embodiment 1 of this invention. It is sectional drawing by the II-II line of FIG. It is the schematic of an LED board. It is the schematic of LED. It is an electric circuit diagram of the illuminating device containing a power supply circuit component. It is a perspective view which shows the illuminating device which concerns on Embodiment 2 of this invention. 6 is an exploded perspective view of a lighting device according to Embodiment 2. FIG. 6 is an external view of a lighting apparatus according to Embodiment 2. FIG. It is sectional drawing by the IX-IX line of FIG. It is sectional drawing by the XX line of FIG. It is sectional drawing by the XI-XI line of FIG.

Explanation of symbols

1,11 Support (connector)
1a Rectangular plane 11b Bent part 2,12 LED
3, 13 LED board 7, 17a, 17b Power circuit component 70, 170a, 170b Power circuit board 91, 92, 93, 94 Base 10 Reflector

Claims (8)

In an illumination device comprising a plurality of LEDs,
A plurality of LEDs are mounted and supported, and a support for mounting and supporting a power supply circuit that lights the plurality of LEDs is provided.
An illumination device comprising the plurality of LEDs and / or the power supply circuit accommodated in the support. In an illumination device comprising a plurality of LEDs,
A bent support for mounting and supporting the plurality of LEDs directly or indirectly;
A power circuit for lighting the plurality of LEDs,
The lighting device, wherein the plurality of LEDs and / or the power supply circuit are accommodated in a space formed by bending of the support. In an illumination device comprising a plurality of LEDs,
A support body for directly or indirectly mounting and supporting the plurality of LEDs;
The plurality of LEDs are accommodated in the support so that light from the LEDs is not directly irradiated to the outside.   The support includes a rectangular plane and two side surfaces extending in opposite directions from both ends of the rectangular plane, and the plurality of LEDs are disposed on the rectangular plane. The lighting device according to any one of claims 1 to 3.   The lighting device according to claim 1, wherein the support dissipates heat from the plurality of LEDs.   The lighting device according to claim 1, wherein the support is provided with a reflection portion that reflects light from the plurality of LEDs.   The illumination device according to claim 6, wherein the reflection unit is a diffusive reflection unit, and reflects and scatters light from the plurality of LEDs.   The lighting device according to claim 1, further comprising two bases to be attached to a fixture for a fluorescent lamp, wherein the support is a connection body between the bases. .

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