JP2012204162A - Lighting device and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device and a lighting fixture that can simplify assembling work and moreover securely support a light source unit to a cover member.SOLUTION: The lighting device 10 includes a light source unit 11, a translucent cover member 12, and a supporting member 13 made of synthetic resin. The light source unit 11 has a substrate 11a on which a solid light emitting element 11b is arranged. The translucent cover member 12 has a nearly tubular shape of which the cross-section is nearly circular and the end part is open, and inside which the light source unit is arranged. The synthetic resin made supporting member 13 supports the light source unit the light source unit arranged in the cover member on to the inner face of the cover member by elastic force of the synthetic resin.

Description

  Embodiments described herein relate generally to a lighting device and a lighting fixture that use a solid light emitting element such as a light emitting diode as a light source.

  In recent years, instead of filament lamps and fluorescent lamps, lighting devices such as LED lamps that employ light-emitting diodes (hereinafter referred to as “LEDs”), which are solid-state light-emitting elements with a long life and low power consumption, have been commercialized. ing. In these lighting devices, lighting devices such as LED lamps and lamps that are thin and long straight tubes that can be used in place of the straight tube fluorescent lamps widely used for indoor and outdoor lighting fixtures are proposed. It has become.

JP 2010-123359 A JP 2009-043447 A

  However, this kind of thin and long straight tube lighting device involves a difficult work of inserting and assembling a thin and long light source unit into a light-transmitting straight tubular cover member. And how to securely support the light source unit on the cover member is an important issue.

  The present invention has been made in view of the above problems, and it is an object of the present invention to provide an illuminating device and a luminaire that can simplify assembly work and can reliably support a light source unit on a cover member.

  The illuminating device in the embodiment includes a light source unit, a translucent cover member, and a synthetic resin support member. The light source unit has a substrate on which a solid light emitting element is disposed. The translucent cover member has a substantially straight tube shape with a substantially circular cross section and an open end, and the light source unit is disposed inside along the longitudinal direction. The synthetic resin support member supports the light source unit disposed on the cover member on the inner surface of the cover member by the elastic force of the resin.

  According to the present invention, it is possible to provide an illuminating device and a luminaire that can simplify assembly work and can reliably support the light source unit on the cover member.

The perspective view which decomposes | disassembles the illuminating device which concerns on 1st Embodiment, and cuts and shows it partially. The lighting device is also shown, (a) is an end view with the base of the lighting device removed, (b) is a side view showing a modification of the support member, and (c) is a normal state before the light source unit is arranged. The end elevation of the cover member in. Similarly, the end view which shows the 1st modification of an illuminating device in the state which removed the nozzle | cap | die. The illuminating device which concerns on 2nd Embodiment is shown, (a) is an end view of the state which removed the nozzle | cap | die of the illuminating device, (b) is an end view which shows a 1st modification in the state which removed the nozzle | cap | die. The lighting fixture equipped with the illuminating device concerning 1st, 2nd embodiment is shown, (a) is a front view, (b) is a side view.

  Hereinafter, embodiments of a lighting device and a lighting fixture will be described with reference to the drawings.

Embodiment 1

  First, the lighting device will be described. The illuminating device of this embodiment constitutes a straight tube LED lamp having a total length of about 1200 mm corresponding to the current 40 W type straight tube fluorescent lamp. As shown in FIG. 1, a solid light emitting element 11b is disposed. The light source unit 11 having the substrate 11a, and a light-transmitting cover member having a substantially straight tube shape with a substantially circular cross section and having an open end, and the light source unit 11 disposed therein along the longitudinal direction 12. The light source unit 11 disposed on the cover member is composed of a synthetic resin support member 13 that supports the light source unit 11 by pressing it against the inner surface of the cover member 12 by the elastic force of the resin.

  The light source unit 11 includes a rectangular substrate 11a and a solid light emitting element 11b disposed along the longitudinal direction of the substrate. The substrate 11a is composed of a member having good electrical insulation, which is a circuit board made of a glass epoxy resin having a flat and thin rectangular shape in this embodiment, and on its surface (upper surface in FIG. 2A). A wiring pattern made of copper foil is formed, and a plurality of solid state light emitting elements 11b are arranged on the wiring pattern in a substantially straight line at substantially equal intervals.

  In the present embodiment, the solid-state light emitting element 11b is composed of a light emitting diode (hereinafter referred to as “LED”), and includes a plurality of SMD (Surface Mount Device) type LEDs. An elongated rectangular light source unit 11 is configured. The plurality of LEDs 11b are connected in series. The LED may be a COB (Chip on Board) type that emits white light (including daylight white, daylight color, and light bulb color) by a plurality of LED chips and a phosphor excited by the LED chips.

  The light source unit 11 is placed on the radiator 11a1. That is, as shown in FIG. 1, the heat radiating body 11a1 is formed into a thin and long shape extending in the longitudinal direction by extrusion molding of a metal having thermal conductivity, in this embodiment, aluminum. The heat dissipating body 11a1 is formed so that the cross-sectional shape forms a hollow, substantially crescent shape composed of an arc portion 11a2 and a straight portion 11a3, and a support groove 11a4 that engages with the light source unit 11 is formed on the surface side of the straight portion 11a3. Form. The support groove is shallow and extends in the longitudinal direction. In addition, the shape of the circular arc part 11a2 of the heat radiator 11a1 is formed so as to match the shape of the glass inner surface of the circular arc in the cover member 12.

  And with respect to the support groove 11a4 formed in the surface side which forms the linear part 11a3, the several light source unit 11 follows the longitudinal direction of the heat radiator 11a1, and each longitudinal axis in the light source unit 11 and the heat radiator 11a1 Are placed in a row. Thereby, the light source unit 11 is engaged with and placed on the support groove 11a4 formed in the longitudinal direction on the heat radiating body 11a1, thereby restricting the position of the light source unit 11 in the short direction. The light source unit 11 placed on the radiator 11a1 is supported and fixed by a support member 13 described later without using a fixing means such as screws (screwless), that is, by omitting the fixing operation. The plurality of light source units 11 are electrically connected by a connector (not shown), and in the present embodiment, the light source units 11 are connected in parallel.

  The light source unit 11 and the heat radiating body 11a1 configured as described above are inserted and disposed along the longitudinal direction of the translucent cover member 12. As shown in FIG. 1, the cover member is a light-transmitting member. In this embodiment, the cover member is made of milky white polycarbonate so as to have light diffusibility, and has a substantially circular cross section and openings 12a and 12a at both ends. It is comprised in the cylinder shape which makes | forms the elongate substantially straight tube shape which has. The cover member 12 is preferably open at both ends in consideration of workability for inserting and arranging a light source unit or the like, but even if either one of the ends is open. Good.

  A support member 13 is formed on the inner surface of the cover member 12. The support member 13 is composed of a pair of protruding strips 13a formed so as to be opposed to a position deviated from one of the circle centers O in the cross section of the cover member 12 (downward in FIG. 2A). The protruding strip 13 a is configured integrally with the cover member 12 on the inner surface of the cover member 12. And it consists of a long pair of convex strip 13a formed along the longitudinal direction of the cover member 12 from one opening 12a to the other opening 12a. The tip end portions 13b of the protruding strips 13a are formed so as to protrude obliquely toward one side (downward in FIG. 2A) so as to face each other. That is, as shown in FIG. 2 (c), the protruding strip 13a is formed so as to protrude obliquely downward in a normal state where no external force is applied.

  In FIG. 2, reference numeral 13 c denotes a long fitting step portion formed along the longitudinal direction of the cover member 12 at the tip end portion 13 b of each protruding strip 13 a, which is obtained by inserting the light source unit 11 into the cover member 12. At the time of disposition, the corners on both sides of the substrate 11a are fitted. Further, as shown in FIG. 2B, a guide portion 13c1 formed of an inclined surface may be formed at the distal end portion of the fitting step portion 13c. Accordingly, when the light source unit 12 is disposed by being inserted into the cover member 12, the corners on both sides of the substrate 11a can be inserted while being smoothly guided to the fitting step portion 13c by the inclined surface of the guide portion 13c1. It becomes possible to improve workability for insertion.

  In this embodiment, the support member 13 having these configurations is integrally formed by extrusion when the cover member 12 made of polycarbonate is resin-molded. As a result, the protruding strip 13a is formed such that the portion that protrudes downward in the normal state has elasticity due to the resin, and the tip 13b is elastically deformed from below to above in FIG. It is formed so as to enable elastic return from above to below. Note that the support member 13 having the above-described configuration may be formed separately from the cover member 12. Moreover, it is preferable from the viewpoint of extrusion molding that the protruding strips 13a are continuously formed in the longitudinal direction. However, for example, the protruding strips 13a are partially formed by continuous blow molding or the like. Also good.

  The support member 13 configured as described above supports the heat radiating body 11a1 and the light source unit 11 that are disposed in the cover member 12 by being pressed against the inner surface of the cover member 12 by the elastic force of the resin. In addition, as shown to Fig.2 (a), the width dimension l1 of the light source unit 11 mentioned above is formed larger than the dimension l2 between the front-end | tip parts 13b of a pair of convex strip 13a (l1> l2). Further, the height dimension h1 when the light source unit 11 is placed on the heat radiating body 11a1 is the height between the front end portion 13b of the support member 13 shown in FIG. 2 (c) and the inner surface of the cover member 12. It is slightly higher than the dimension h2 (h1> h2). Further, the shape of the arc portion 11a2 in the heat radiating body 11a1 is formed so as to match the inner shape of the arc in the cover member 12.

  The light source unit 11 and the heat radiating body 11a1 configured as described above are assembled to the cover member 12 as follows. First, the light source unit 11 is placed in engagement with the support groove 11a4 of the heat radiating body 11a1, and the light source unit 11 and the heat radiating body 11a1 are inserted together through one opening 12a of the cover member 12. At this time, the arc portion 11a2 of the heat radiating body 11a1 is inserted while being slid while being aligned with the inner surface of the cover member 12 and serving as a guide. By this insertion operation, the corner portion at the tip of the substrate 11 a in the light source unit 11 comes into contact with the fitting step portion 13 c of the protruding strip 13 a in the support member 13.

  When further pushed in this state, the corner portion of the tip of the substrate 11a enters the fitting step portion 13c, the elastic protruding strip 13a is elastically deformed and bent upward, and this bending causes the corner of the substrate 11a to protrude into the protruding strip. It fits in the fitting step 13c of 13a. Then, by further pressing the light source unit 11 and the heat radiating body 11a1, the cover member 12 is slid to the vicinity of the other opening 12a and inserted. At this time, the protruding strip 13a is elastically restored and a downward force P1 is generated. The light source unit 11 and the radiator 11a1 are pushed against the force P1 (frictional force).

  As a result, as shown in FIG. 2A, the heat radiating body 11a1 and the light source unit 11 placed on the heat radiating body are inserted along the longitudinal direction of the cover member 12 and are disposed inside. The light source unit 11 is pressed against and supported by the inner surface of the cover member 12 via the radiator 11a1 by the force P1 due to the elastic return of the piece 13a, that is, by the elastic force of the resin. At the same time, the arc portion 11a2 of the heat radiating body 11a1 having thermal conductivity is supported in a state of being in close contact with the inner surface of the arc of the cover member 12 and being thermally coupled. At the same time, the light source unit 11 is more strongly engaged with the heat sink 11a1 by the elastic force of the resin with respect to the support groove 11a4 formed in the longitudinal direction. Regulations are made surely.

  The means for supporting the light source unit 11 on the inner surface of the cover member 12 by the elastic force of the resin may be such that the light source unit 11 is supported by the cover member 12 via the radiator 11a1 as in this embodiment. The light source unit may be directly supported by the cover member without using a heat radiator.

  As described above, with the light source unit 11 and the radiator 11a1 being inserted into the cover member 12, the base member 14 is fitted into the openings 12a and 12a at both ends of the cover member 12, and the openings at both ends are closed. Can be removed. The base member 14 is formed of a synthetic resin having heat resistance and electrical insulation, in this embodiment, white PBT (polybutylene terephthalate) in a circular cap shape, and the caps are formed in openings 12 a and 12 a at both ends of the cover member 12. And is fixed with an adhesive made of silicone resin, epoxy resin or the like.

  In addition, as shown in FIG. 1, one base member 14 is provided with a pair of power supply pin terminals 14a, and the pin terminals 14a and the input terminals of the light source unit 11 are electrically connected to each LED 11b. Is supplied. The other base member 14 is provided with a ground terminal 14b to constitute the lighting device 10 composed of a straight tube LED lamp.

  The lighting device of this embodiment has a total length of about 1200 mm and an outer diameter of the cover member 12 of about 25.5 mm, and constitutes a straight tube LED lamp corresponding to the current 40 W type straight tube fluorescent lamp. In addition, the lighting device for lighting each LED11b is provided in the lighting fixture side in which the illuminating device 10 comprised above is integrated. And it supplies to each LED11b from the pin terminal 14a of the illuminating device 10 with which the fixture was mounted | worn via the lighting device in a fixture from commercial power supply, and lighting control is carried out. The lighting device may be configured to be built in the lighting device 10. In this case, by arranging the lighting device on the back side of the substrate 11a (the back side of the light emitting surface), it is possible to configure without reducing the area of the substrate 11a, that is, the light emitting area.

  As described above, according to the present embodiment, the light source unit 11 and the radiator 11a1 are simply pushed into the cover member 12 against the elasticity of the resin of the support member 13 when assembling a long illuminating device. It is possible to provide an illumination device that can be assembled by a simple slide operation, is simplified in assembly work, suitable for mass production, and advantageous in terms of cost.

  Furthermore, the light source unit 11 can be disposed inside by being inserted into the cover member 12 in a state in which the light source unit 11 is simply placed on the radiator 11a1, in other words, in a state in which the light source unit 11 is not fixed by a fixing means such as a screw. This eliminates the need for a screwing operation, thereby further simplifying the operation and reducing the cost. By the way, in this type of straight tube lighting device, it was necessary to fix a plurality of light source units to the radiator with screws, so the number of screws was very large and the work was troublesome, and also the factor of cost increase It was.

  Further, since the heat radiating body 11a1 is pressed against and supported by the inner surface of the cover member 12 through the light source unit 11 by the elastic force of the resin, both the light source unit 11 and the heat radiating body 11a1 are reliably supported by the cover member 12. The distance between the light source unit 11 and the inner surface of the cover member 12 can be automatically maintained at a constant distance along the longitudinal direction so that the brightness of the cover member 12 is uniform in the longitudinal direction. It becomes possible to provide a lighting device having the same. At the same time, the light source unit 11 and the heat radiating body 11a1 are prevented from rattling in the cover member 12, and even when the lamp is held by hand or when the lamp vibrates, there is no rattling noise and the merchantability is improved. There is no loss. At the same time, it is possible to configure a lighting device that is resistant to vibration and impact. Further, the light source unit 11 is more strongly engaged with the heat sink 11a1 in the longitudinal direction by the elastic force of the resin and placed on the support groove 11a4 formed in the longitudinal direction. Regulations are made surely.

  Incidentally, in the related art, the light source unit 11 and the heat radiating body 11a1 are simply inserted into the cover member 12, in other words, the structure is inserted without using the elastic force of the resin. Due to the fact that it is long, a gap is generated by bending, and the gap between the light source unit 11 and the inner surface of the cover member 12 varies, resulting in uneven brightness. In addition, there is a possibility that a sound may be generated when the lamp is shaken, which may cause a problem in merchantability.

  Further, as described above, since the light source unit 11 and the heat radiating body 11a1 can be supported without using screws, it is possible to prevent the light source unit 11 and the heat radiating body 11a1 from being deformed due to a difference in thermal expansion coefficient. Become. By the way, the substrate 11a of the light source unit 11 is made of glass epoxy resin, the radiator 11a1 is made of aluminum, each has a different coefficient of thermal expansion, and conventionally both of them are fixed with screws. There is a possibility that the weak substrate 11a is deformed by the generated heat and warps. On the other hand, according to this embodiment, it becomes possible to prevent the deformation | transformation of the board | substrate 11a, and the space | interval dimension of the light emission surface of the board | substrate 11a and the cover member 12 inner surface can always be kept constant, and it can maintain in a longitudinal direction. It is possible to further prevent the occurrence of uneven brightness.

  Further, the heat radiating body 11 a 1 is pressed against and supported by the inner surface of the cover member 12 through the light source unit 11 by the elastic force of the resin, so that the arc portion 11 a 2 of the heat radiating body 11 a 1 has the heat conductivity. It is in close contact with the inner surface of the lower arc and is supported in a thermally coupled state. Thereby, the heat which generate | occur | produces in each LED11b can be reliably transmitted to the cover member 12 from the heat radiator 11a1, and can be thermally radiated effectively outside. Thereby, the temperature rise of each LED can be prevented, and the fall of luminous efficiency can be suppressed, and it becomes possible to provide an illuminating device with a long lifetime.

  Moreover, since the heat radiator 11a1 has a long pipe shape formed by extrusion molding of aluminum and extends in the longitudinal direction of the cover member 12 to act as a reinforcing material, it is possible to increase the strength of the long lighting device. Become. Moreover, the heat radiating body 11a1 is disposed inside the cover member 12, and there is no possibility that the heat radiating body is contaminated by dust or the like. Moreover, since the illuminating device which uses this kind of LED as a light source can improve the heat dissipation of LED, it is used as interior lighting of a freezer or a refrigerator. In this case, in the case of providing a waterproof function, this embodiment According to the present invention, since the heat radiating body is not exposed to the outside, a waterproof structure between the heat radiating body and the cover member is not required, so that the structure is simplified and a lighting device with a waterproof function that is advantageous in terms of cost is provided. It becomes possible to do.

  As described above, in the present embodiment, the heat radiating body may be omitted, and only the light source unit may be directly supported by being pressed against the inner surface of the cover member by the elastic force of the resin in the support member. This is a preferable configuration when a member having good thermal conductivity such as aluminum or ceramics is used for the substrate of the light source unit. That is, as shown in FIG. 3, the light source unit 11 includes a substrate 11 a made of ceramics and a plurality of LED chips 11 b mounted on the surface thereof, as shown in FIG. 3. The light source unit 11 is disposed inside along the longitudinal direction of the cover member 12 in the same manner as described above, and by the force P1 due to the elastic return of the protruding strip 13a of the support member 13, that is, by the elastic force of the resin. The light source unit 11 is pressed against the inner surface of the cover member 12 and directly supported.

  According to this modification, the same operational effects as those of the lighting device 10 shown in FIGS. 1 and 2 described above can be obtained. In particular, according to this modification, only the light source unit 11 can be reliably supported on the cover member 12 by the elastic force of the resin, and both sides of the substrate 11a made of ceramics having good thermal conductivity by the elastic force of the resin. The portion is pressed against and supported by the inner surface of the cover member 12. Thereby, the heat generated in each LED 11b can be directly transmitted from the substrate 11a to the cover member 12, and can be radiated more effectively. Note that, in FIG. 3 showing the present modification, the same parts as those in FIGS. 1 to 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

Embodiment 2

  The present embodiment is an illumination device in which the cover member is made of glass, and the configuration thereof will be described below with reference to FIG. When the cover member is made of glass, it is difficult to form a support member such as a convex piece on the inner surface of the glass in order to support the light source unit. In this method, the support is made only by the caps at both ends, or the adhesive is used.

  When supported by the base, the light source unit and the heat radiating member may vibrate within the cover member, and sound may be generated or the cover member may be damaged. On the other hand, when fixing directly to glass, workability | operativity worsens.

  Moreover, since each LED of the light source unit can be directly seen, a dazzling feeling is generated. Therefore, the cover member is provided with light diffusibility. For example, in the case of a glass cover member, it is conceivable to apply a light diffusing agent to the inner surface. However, in this type of straight tube type lighting device, the cover member is long and the diffusing agent is applied to a long glass tube. It is necessary to apply, increasing the number of processing steps, creating a difference in the concentration of the diffusing agent between one end and the other, and making it difficult to ensure a certain quality, such as different diffusivities between both ends. Become. For this reason, there is a problem that a new management process for preventing the quality from being deteriorated and productivity is lowered.

  The present embodiment has been made in view of these problems, and includes a light source unit 11 having a substrate 11a on which a solid light emitting element 11b is disposed, a radiator 11a1 on which the light source unit 11 is placed, and a substantially circular cross section. The light source unit 11 is formed in a substantially straight tube shape having an open end, and the light source unit 11 is disposed inside along the longitudinal direction, and the light source unit 11 disposed on the cover member is covered. The support member 13 made of synthetic resin is supported by pressing the inner surface of the member 12 with the elastic force of the resin. The light source unit 11 and the radiator 11a1 have the same configuration as that of the first embodiment.

  The support member 13 of this embodiment, that is, a member for holding the light source unit 11 and the heat radiating body 11a1 on the cover member 12 is constituted by a light diffusing member 15 having a function for diffusing light. That is, in this embodiment, the light diffusing member 15 is configured by a member having a film shape and a flat sheet shape without load. The material is composed of a synthetic resin such as milky white polycarbonate in order to impart light diffusibility. And as shown to Fig.4 (a), the light-diffusion member 15 makes | forms a cylinder shape resisting the elasticity of resin, ie, the cylindrical shape which made the lower part open | released along the longitudinal direction in this embodiment. Thus, the opened both ends constitute the support member 13, and the curved cylindrical portion constitutes the light diffusion portion. The planar sheet-like member is configured so that the outer diameter of the cylindrical portion is substantially equal to the inner diameter of the cover member 12.

  That is, the light diffusing member 15 is curved in a cylindrical shape so as to have an open portion at the lower portion, and the opened both ends constitute a pair of protruding strips 13a of the support member, and the tip portions thereof. A fitting step 13c similar to that of the first embodiment is formed on 13b. And the light source unit 11 is arrange | positioned by insertion in the inside of the cover member 12, and the corner | angular part of both sides of the board | substrate 11a is fitted with respect to the fitting step part 13c of the support member 13, and a cylindrical part is formed. The light diffusion portion is supported so as to be in close contact with the inner surface of the cover member 12.

  Then, assembling, first, the flat sheet-shaped member constituting the light diffusing member 15 is bent into a cylindrical shape against the elasticity of the resin, and the cylindrical tip is covered as it is while maintaining the cylindrical shape. The inner surface of the member 12 is matched, and the inner surface is inserted as a guide. At this time, the opened portion, that is, the support member 13 is positioned below, and the curved light diffusing portion is inserted while matching the upper inner surface in FIG. And the convex strip 13a located in the end surface of the light-diffusion member 15 is hold | maintained in the position (position of Fig.4 (a)) mutually opposed by the jig.

  Next, the light source unit 11 placed in engagement with the support groove 11a4 of the heat radiating body 11a1 is inserted from one opening 12a of the cover member 12. At this time, the arcuate portion 11a2 of the heat radiating body 11a1 is inserted into the guide while aligning with the inner surface of the arc of the cover member 12. By this insertion operation, the tips of the corners on both sides of the substrate 11a in the light source unit 11 are brought into contact with the fitting step portion 13c of the support member 13 of the light diffusion member 15 inserted earlier.

  When further pushed in this state, the corner portion of the substrate 11a enters the fitting step portion 13c of the protruding strip 13a, the elastic protruding strip 13a is elastically deformed and bent upward, and the bending causes the corner of the substrate 11a. The portion fits into the fitting step 13c of the protruding strip 13a. In this state, the jig described above is removed.

  And it inserts to the other opening 12a vicinity of the cover member 12 by pushing operation of the further light source unit 11 and the heat radiator 11a1. At this time, there are generated a force P1 in which the protruding strip 13a is elastically restored and is directed downward, and a reaction force P2 in which the light diffusing member 15 is restored to the original flat sheet from the curved state. The light source unit 11 and the radiator 11a1 are pushed in against P1 + P2 (friction force).

  As a result, as shown in FIG. 4A, the light diffusing member 15, the radiator 11 a 1, and the light source unit 11 are disposed inside along the longitudinal direction of the cover member 12, and the support member 13 The light source unit 11 causes the inner surface of the cover member 12 via the radiator 11a1 by the force P1 due to the elastic return of the protruding strip 13a and the reaction force P2 to return to the flat sheet of the light diffusing member 15, that is, by the elastic force of the resin. To be supported. At the same time, the arc portion 11a2 of the heat radiating body 11a1 having thermal conductivity is supported in a state of being in close contact with the inner surface of the arc of the cover member 12 and being thermally coupled. At the same time, the light source unit 11 is more strongly engaged with the heat sink 11a1 by the elastic force of the resin with respect to the support groove 11a4 formed in the longitudinal direction. Regulations are made surely.

  As described above, according to the present embodiment, the same operation as that of the first embodiment can be achieved. In particular, according to the present embodiment, the light diffusing member 15 can diffuse light emitted from the LEDs, and even if transparent glass is used for the cover member, each LED of the light source unit can be directly seen. It becomes possible to prevent dazzling feeling. In addition, it is possible to solve difficult design problems caused by directly fixing the light source unit to the glass. In addition, it is possible to improve the productivity because the management process for preventing the increase in processing steps and the deterioration of quality caused by applying the light diffusing agent to the inner surface of the glass is not required.

  Further, since the support member 13 is constituted by the light diffusing member 15, the light extraction property, which is the original purpose of illumination, is hardly hindered. Furthermore, the cover member 12 has a tubular shape, and a waterproof illumination device can be easily configured. This embodiment is a configuration that is very effective when a glass cover member is used from the standpoints of product appearance and durability. However, the present invention can be applied not only to glass but also to a lighting device having a synthetic resin cover member.

  Further, the light source unit 11 and the heat radiating body 11a1 are supported with a stronger force by the force P1 due to the elastic return of the protruding strip 13a of the support member 13 and the reaction force P2 trying to return to the flat sheet of the light diffusion member 15. The light source unit 11 and the heat radiating body 11a1 are supported on the cover member 12 more securely, and at the same time, the arc portion 11a2 of the heat conducting heat radiating body 11a1 is aligned with the inner surface of the arc below the cover member 12 In addition, it can be supported in a more thermally coupled state.

  As described above, in the present embodiment, similarly to the first embodiment, the radiator may be omitted and only the light source unit may be directly supported by pressing the inner surface of the cover member by the elastic force of the resin in the support member. . That is, as shown in FIG. 4B, the light source unit 11 is configured by configuring the substrate 11a with ceramics and mounting a plurality of LED chips on the surface thereof, as shown in FIG.

  The light diffusing member 15 is inserted along the longitudinal direction of the cover member 12 and disposed therein, and the light source unit 11 is inserted along the longitudinal direction of the cover member 12 and disposed therein. Further, only the light source unit 11 is attached to the cover member 12 by the force P1 due to the elastic return of the convex strip 13a of the support member 13 and the reaction force P2 trying to return to the flat sheet of the light diffusion member 15, that is, by the elastic force of the resin. Press directly against the inner surface and support directly.

  According to this modification, the same operational effects as those of the lighting device 10 shown in FIG. In particular, according to the present modification, as in the first modification shown in FIG. 3 of the first embodiment, only the light source unit 11 can be reliably supported on the cover member 12 by the elastic force of the resin. It is also possible to dissipate heat generated by the LED 11b more effectively. Note that, in FIG. 4B showing this modification, the same parts as those in FIG. 4A are denoted by the same reference numerals, and detailed description thereof is omitted.

  As described above, in the present embodiment, the light diffusing member 15 is configured by curving a flat sheet, but has a “somewhat cylindrical shape” in which the lower portion is opened in the longitudinal direction by resin molding in advance (cover). It may be configured to have an outer diameter larger than the inner diameter of the member and to have a certain cylindrical shape with an opening at the bottom. According to this, even if the light diffusion member having a “cylindrical shape” is combined with the heat radiating body to form a cylindrical body that matches the inner diameter of the cover member, the light diffusion member may be inserted into the cover member and disposed. Good. Also in this case, the heat radiating body is pressed against and supported by the inner surface of the cover member by the reaction force P2 that attempts to return to the original “somewhat cylindrical shape”.

  Further, it may be configured so as to form a cylindrical shape in which the lower portion is opened along the longitudinal direction by resin molding in advance. In this case, since the reaction force P2 does not occur, the light source unit 11 and the heat radiator 11a1 are supported by the force P1 due to the elastic recovery of the resin.

  The cover member 12 is made of transparent glass, but may be colored blue or red. Further, it may be made of translucent glass such as milky white for the purpose of further diffusing light. Furthermore, it may replace with glass and may comprise a transparent or translucent synthetic resin. Other configurations, operations, effects, and the like in the present embodiment are the same as those in the first embodiment. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  Next, the structure of the lighting fixture using the illuminating device 10 concerning the said Embodiment 1 and Embodiment 2 is demonstrated. The lighting device 20 of the present embodiment is a lighting device such as a base light for facilities / businesses such as stores and offices. As shown in FIG. It is comprised with the illuminating device 10. FIG.

  The appliance main body 21 is composed of a long rectangular box-shaped base portion 21a made of a white coated steel plate and the like, and a pair of reflectors 21b and 21b having an inverted Fuji shape provided on the lower surface of the base portion. The lighting device 21c is built in the base portion 21a. The lighting device 21c is configured by a lighting circuit that converts an AC voltage of 100V into a DC voltage of about 24V and supplies a constant current to each LED 11b of the lighting device 10.

  Each reflector 21b is provided with a pair of sockets 21d and 21d to which the cap member 14 provided in the lighting device 10 is attached. And the two illuminating devices 10 of the structure mentioned above are mounted | worn with respect to a pair of sockets 21d and 21d, and the lighting fixture 20 is comprised. The lighting fixture 20 configured as described above is installed by being wired to a commercial power source and directly attached to the ceiling X of the room.

  When the installed lighting fixture 20 is turned on, power is supplied from the commercial power source to the LEDs 11b from the lighting device 21c and the sockets 21d and 21d through the cap member 14 of the lighting device 10, and white light is emitted to illuminate the room. .

  At this time, the cover member 12 is made of milky white polycarbonate in the first embodiment (the glass cover member 12 in the second embodiment has a light diffusion member 15 made of milky white polycarbonate. ) For this reason, each LED 11b is not directly visible, it is possible to reduce glare and to perform illumination diffused over a wide range. In particular, since the light source unit 11 is provided at a position deviated from the center O of the circle of the cover member 12, light is radiated at an angle exceeding 180 °, so that illumination is performed over a wider range. Is possible. In the present embodiment, the lighting fixtures are not limited to facilities / businesses such as the stores and offices illustrated above, but also various lighting fixtures for homes, as well as outdoor lighting such as crime prevention lights, street lights, and road lights. Various lighting fixtures may be configured.

  As described above, in Embodiments 1 and 2, a straight tube type lighting device that can be replaced with a general straight tube type fluorescent lamp is configured. However, other lighting devices having various external shapes and applications, for example, annular It can be applied to a lighting device having a shape. Moreover, although the illuminating device with a base was comprised, you may apply to the illuminating device which does not have a base, for example, does not have a base directly integrated in an instrument. In the present embodiment, the lighting device having a total length of about 1200 mm is configured. However, the total length is about 600 mm, and further, the lighting device having a length of about 2400 mm is configured, and various types of lighting devices having a length corresponding to the application are configured. You may do it. Furthermore, you may comprise the illuminating device with a thin pipe | tube outer diameter.

  The solid state light emitting element is preferably composed of, for example, an LED chip made of a gallium nitride (GaN) -based semiconductor that emits blue light. However, a solid state light emitting element using a semiconductor laser, an organic EL, or the like as a light source is acceptable. The Moreover, although it was made to light-emit in white, according to the use of an illuminating device, you may comprise red, blue, green, etc., and also combining various colors. In addition, the solid light emitting elements are mounted in a line so as to form a straight line on a rectangular substrate. However, the solid light emitting elements are regularly fixed, such as those in which a large number of solid light emitting elements are arranged in a matrix, a staggered pattern or a radial pattern. A part or the whole may be arranged and mounted in a plane in order.

  Further, the SMD type or COB type may be used as the solid state light emitting element. In the case of the SMD type, it is preferable that the solid state light emitting element is composed of a plurality of solid state light emitting elements. For example, about four element groups may be configured, and one group or a plurality of groups may be formed. Furthermore, it may be composed of a single solid state light emitting device.

  The shape of the substrate is preferably a rectangular shape such as a rectangle or a square in order to constitute a straight tube lighting device, but a polygonal shape such as a hexagon or an octagon, or a circular or elliptical shape. Or the like may be arranged in a straight line.

  The radiator is a metal having at least one of aluminum (Al), copper (Cu), iron (Fe), and nickel (Ni), which has good thermal conductivity in order to enhance the heat dissipation of the solid state light emitting device. In addition to this, it may be made of an industrial material such as aluminum nitride (AlN) or silicon carbide (SiC). Further, in order to further improve the heat dissipation performance, a large number of heat radiation fins projecting radially from one end side to the other end side, heat radiation pins projecting in the radial direction, and the like may be integrally formed on the outer peripheral surface.

  The cover member may have reflecting means such as a reflecting film formed on a part of the inner surface for improving the light distribution characteristics. Further, the cover member preferably constitutes an envelope that substantially seals the light emitting portion, but it is not a condition that the cover member is completely sealed, as long as it is optically sealed. A small vent hole or the like may be formed.

  The base member is preferably a pin-type terminal used in a general straight tube fluorescent lamp. For example, it is a base such as an Edison type E17 or E26 used in an incandescent bulb or a bulb-type fluorescent lamp. There may be. Further, it may be a GX53 base used for a flat thin lamp or a base having an L-shaped terminal used for hook sealing, and is not limited to a specific base. Moreover, the lighting device for controlling the lighting of the solid state light emitting element may include a dimming circuit, a toning circuit and the like for dimming the solid state light emitting element.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to each above-mentioned embodiment, A various design change can be performed in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Light source unit 11a Board | substrate 11a1 Heat radiator 11b Solid light emitting element 12 Cover member 13 Support member 20 Lighting fixture 21 Appliance main body

Claims (5)

A light source unit having a substrate on which a solid state light emitting element is disposed;
A translucent cover member having a substantially straight tube shape with a substantially circular cross section and an open end, wherein the light source unit is disposed along the longitudinal direction;
A synthetic resin support member that supports the light source unit disposed on the cover member on the inner surface of the cover member by the elastic force of the resin;
An illumination device comprising: The light source unit is placed on a heat radiating body having thermal conductivity and disposed inside the cover member, and the heat radiating body is supported on the inner surface of the cover member by the elastic force of the resin of the supporting member. The lighting device according to claim 1. The lighting device according to claim 2, wherein the support member supports the light source unit on the heat radiating body by elastic force. The heat radiator has a support groove that engages with the light source unit in a longitudinal direction, and the light source unit is engaged with the support groove to restrict the position in the short direction. Item 4. The lighting device according to Item 2 or 3. An instrument body;
The lighting device according to any one of claims 1 to 4, which is mounted on an appliance body;
The lighting fixture characterized by comprising.

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