JP2010129501A - Illumination device and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device and luminaire capable of preventing occurrence of glares, while preventing deterioration in the optical output. <P>SOLUTION: The illumination device 10 includes: a tabular luminous unit A having a luminous element 11 and a reflector 13 for reflecting light from the luminous element; a body 12 which is formed with an opening 14a at one end thereof, and in which the luminous unit is disposed, at a position where the reflector is depressed from an open end of the opening and a light-shield wall 14f is provided between the periphery of the luminous unit and the open end; a light control member 15, provided at the opening of the body for controlling light emitted from the luminous unit; a cap member 17 supported by the other end of the body; and a lighting device 16 for lightening the luminous element. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

   The present invention relates to a lighting device and a lighting fixture using a light emitting element such as a light emitting diode as a light source.

In recent years, instead of filament light bulbs, lighting devices such as light bulb shaped LED lamps using light emitting diodes, which are semiconductor light emitting elements with long life and low power consumption, have been adopted as light sources for various lighting fixtures. ing. For example, Patent Document 1 discloses a light emitting diode mounted on a substrate, a lighting device that lights the light emitting diode, a cover that houses the lighting device, has a base attached to one side, and a substrate attached to the other side. An LED bulb comprising a translucent glove attached to the other side of the cover to cover the light emitting diode, and the LED in a socket for a hanging luminaire or a downlight bulb It is shown that a light bulb is installed and used.
JP 2008-091140 A

  On the other hand, when an LED bulb is attached instead of the incandescent bulb already attached to the fixture for energy saving, the optical design of the reflector and the like of the existing fixture is designed based on the light distribution of the incandescent bulb. For this reason, the light distribution of the LED bulb needs to be close to the incandescent bulb. Moreover, in order to construct an LED bulb, it is necessary to radiate light from the LED without loss and to approximate the light distribution of the incandescent bulb.

  However, since the LED has high directivity of light and high luminance, the LED feels dazzling when viewed directly. For this reason, generally, a light shielding wall is provided around the LED to prevent glare in the horizontal viewing direction as much as possible to reduce glare. Also in patent document 1, it supports with the board | substrate which mounted LED in the opening part of the cover part intruded, and the cylindrical wall is formed around LED. For this reason, most of the light radiated from the LED in the lateral (horizontal) direction is blocked by the cylindrical wall, so that the spectral output is reduced.

  Moreover, in the LED bulb in Patent Document 1, since light is not emitted in the direction of the cap, it cannot be brought close to the light distribution of the incandescent bulb. For this reason, it is difficult for the LED bulb of Patent Document 1 to make use of the optical design of the reflector in the existing instrument.

  This invention is made | formed in view of the said subject, and it aims at providing the illuminating device and lighting fixture which can prevent the fall of a light output, preventing generation | occurrence | production of a glare.

  In order to achieve the above object, the invention of the lighting device according to claim 1 is a flat light-emitting unit having a light-emitting element and a reflector that reflects light of the light-emitting element; and an opening is formed at one end. A main body in which the light emitting unit is disposed at a position where the reflector is inserted from the opening end of the opening, and a light shielding wall is provided between the periphery of the light emitting unit and the opening end; provided in the opening of the main body And a light control member for controlling the light emitted from the light emitting unit; a base member supported on the other end of the main body; and a lighting device for lighting the light emitting element. According to the present invention, an opening is formed at one end, the light emitting unit is disposed at a position where the reflector is inserted from the opening end of the opening, and light shielding is performed between the periphery of the light emitting unit and the opening end. Illumination device capable of preventing a decrease in light output while preventing glare by a main body provided with a wall and a light control member which is provided in an opening of the main body and controls light emitted from the light emitting unit Can be configured.

  In the present invention, the lighting device is a light bulb shaped lighting device (A type) approximated to the shape of an incandescent light bulb, a reflex light bulb shaped lighting device (R type), a ball shaped light bulb shaped lighting device (G type). ), A cylindrical light bulb-shaped lighting device (T-shaped), or the like. Furthermore, it may constitute a globeless bulb-shaped illumination device.

  As the light emitting element, a light emitting element using a semiconductor or the like as a light emitting source, such as a light emitting diode, an organic EL, or a semiconductor laser, is allowed. It is preferable that a plurality of light emitting elements are formed, but the necessary number is selected according to the use of illumination. For example, about four element groups are formed, and one or a plurality of groups are formed. You may comprise. Furthermore, it may be composed of one light emitting element. The light emitting element is preferably configured to emit white light, but may be configured to be red, yellow, green, or a combination of various colors depending on the use of the lighting fixture.

  The reflector is optically designed so as to obtain a desired light distribution, and is provided around the light emitting element. It may be optically designed according to the light distribution characteristics of the incandescent bulb. The light reflected by the reflector is designed to irradiate the light shielding wall of the main body, which will be described later, or only a small amount of reflected light, and the light output is suppressed from being lowered by the light shielding wall. ing. In order to obtain a light distribution that is rotationally symmetric about the center of the light emitting element, the shape of the reflector is formed by a “mortar-shaped” concave portion having a circular cross section so as to surround the light emitting region of the light emitting element. May be. Moreover, for example, the shape may be a “mortar-shaped” recess having a rectangular cross section, and is not limited to a specified shape. In consideration of the light reflection performance, the material is integrally formed of a white synthetic resin having weather resistance, heat resistance and electrical insulation, for example, PBT (polybutylene terephthalate), or a synthetic resin such as acrylic or ABS. May be. Moreover, even if the surface is painted white, a metal such as aluminum or silver may be deposited or plated to be processed into a mirror surface or a half mirror surface. Further, it may be made of a metal such as aluminum or copper, and white coating, vapor deposition, plating, or the like may be performed similarly to the above synthetic resin.

  The reflector may be provided corresponding to each light emitting element or each light emitting element group according to the number of light emitting elements. The plurality of reflectors provided individually or in groups may be configured so as to obtain the same light distribution characteristics or may be combined with those having different light distribution characteristics. In addition, one common reflector may be provided for a plurality of light emitting elements or light emitting element groups. Furthermore, one reflector may be provided for one light emitting element. The flat light emitting unit is allowed to be composed of the light emitting element and the reflector described above. The light emitting unit may be a module in which a light emitting element, a reflector, and the like are modularized.

  The main body is preferably composed of a metal having good thermal conductivity such as aluminum in order to dissipate the heat of the light emitting element. For example, the heat radiation of the light emitting element can be composed of another function. In addition to the metal, it may be made of a synthetic resin such as PBT. Appearance shape can be formed in a shape that approximates the silhouette of the neck part of incandescent bulbs, the diameter of which gradually decreases from one end to the other. For example, the shape may be a shape in which the diameter decreases stepwise and the diameter decreases stepwise as a whole, and is not limited to a specific shape.

  The light shielding wall provided in the main body is provided so as to stand in the light emission direction from the periphery of the light emitting unit, and is designed so that the light emitting element is not easily seen from the side of the main body. Glare is suppressed by the light shielding wall, and since the amount of reflected light that is applied to the light shielding wall by the reflector of the light emitting unit is small, a decrease in light output is also suppressed.

  The light control member provided in the opening of the main body may be constituted by, for example, a reflecting member that reflects light from the light emitting element, or may be constituted by light diffusing means that diffuses light from the light emitting element. Furthermore, the light may be refracted and controlled by a prism or a lens.

  As the base member, all bases that can be attached to a socket to which an incandescent bulb is attached are allowed, but generally, the most popular types such as Edison type E26 type and E17 type are preferable. In addition, even if the material is a metal base as a whole, the electrical connection part is made of a metal such as a copper plate, and the other part is a plastic base made of a synthetic resin. It may be a base having a pin-shaped terminal used for a fluorescent lamp or a base having an L-shaped terminal used for hook sealing, and is not limited to a specific base.

  The lighting device for lighting the light emitting element is composed of, for example, a lighting circuit that converts an AC voltage of 100 V into a DC voltage of 24 V and supplies it to the light emitting element, and is preferably provided in the main body. It may be configured by.

  According to a second aspect of the present invention, in the illumination device according to the first aspect, the light control member is formed of a reflective member that is provided around the inner side of the light shielding wall of the main body and reflects light emitted from the light emitting unit. And According to the present invention, an illumination that is provided around the inner side of the light shielding wall of the main body and reflects the emitted light or reflected light of the light emitting unit can reduce light loss and can be close to the light distribution of the incandescent bulb. A device can be configured.

  The reflecting member reflects direct light or reflected light of the light emitting element that is shielded by the light shielding wall of the main body. The shape of the reflecting member may be constituted by a ring-shaped frame having a circular “cross-sectional shape” so as to cover the light shielding wall in order to obtain a light distribution in which the central axis of the main body is rotationally symmetric. . Further, for example, the frame may have a “dish shape” having a rectangular cross section, and is not limited to a specified shape. The material may be integrally formed of a white synthetic resin having weather resistance, heat resistance, and electrical insulation, for example, a synthetic resin such as PBT, acrylic, or ABS in consideration of light reflection performance. Moreover, even if the surface is painted white, a metal such as aluminum or silver may be deposited or plated to be processed into a mirror surface or a half mirror surface. Further, it may be made of a metal such as aluminum or copper, and white coating, vapor deposition, plating, or the like may be performed similarly to the above synthetic resin. The reflection member may be formed integrally with the reflector of the light emitting unit. Moreover, it may be appropriately selected and mounted according to the use and purpose of the lighting device. Further, in a lighting device having a cover member such as a globe, it may be formed integrally with the cover member.

  According to a third aspect of the present invention, in the illuminating device according to the first aspect, the light control member includes light diffusing means formed on at least a peripheral portion of a light-transmitting cover member that covers the opening of the main body. It is characterized by that. According to the present invention, the light emitted from the light emitting element is diffused in the direction of the base by the light diffusing means formed on at least the peripheral portion of the translucent cover member that covers the opening of the main body. An illuminating device capable of being closer to the light distribution can be configured.

  The cover member is preferably composed of a glove made of a transparent or translucent synthetic resin provided so as to cover the opening of the main body, in other words, the light emitting element, but is composed of a glove made of glass or the like. It may be what was done.

  For example, in a transparent glove, the light diffusing means may be configured to diffuse light by forming only the periphery of the glove in milky white, or may be configured by forming the entire glove in milky white or the like.

  The invention of the lighting fixture according to claim 4 comprises: a fixture main body provided with a socket; and the lighting device according to any one of claims 1 to 3 attached to the socket of the fixture main body. Features. ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can be approximated to the light distribution of an incandescent lamp can be comprised.

  In the present invention, the lighting fixture may be directly attached to the ceiling, suspended from the ceiling, or mounted on the wall, or a ceiling-embedded downlight. Even if a glove, a shade, a reflector or the like is attached as a light control body to the fixture body, the lighting device may be exposed. Further, the lighting fixture is not limited to one having a single lighting device attached to the fixture body, and a plurality of lighting fixtures may be mounted. Furthermore, you may comprise large luminaires for facilities and business, such as offices.

  According to the first aspect of the present invention, since the light control member for controlling the emitted light of the light emitting unit as desired is provided while reducing the reflected light irradiated to the light shielding wall of the main body by the reflector, glare is prevented. However, it is possible to provide an illuminating device that can suppress a decrease in light output and approach a desired light distribution.

  According to the second aspect of the present invention, it is possible to reduce the light loss and approximate the light distribution of the incandescent bulb by the reflecting member provided around the inner side of the light shielding wall of the main body and reflecting the light emitted from the light emitting unit. A lighting device can be provided.

  According to the third aspect of the present invention, the light emitted from the light emitting element is diffused in the direction of the base by the light diffusing means formed at least at the peripheral edge of the translucent cover member that covers the opening of the main body. It is possible to provide an illuminating device that can be brought closer to the light distribution of the incandescent bulb.

  According to the invention described in claim 4, the lighting device according to any one of claims 1 to 3, which is incorporated in the fixture body, can prevent a glare and suppress a decrease in light output and bring it closer to a desired light distribution. Possible lighting fixtures are constructed.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a lighting device according to the present invention and a lighting fixture incorporating the lighting device will be described with reference to the drawings.

  As shown in FIG. 1, the illuminating device of the present embodiment constitutes an illuminating device 10 as a bulb-type LED lamp, and includes a light emitting element 11, a base 12 on which the light emitting element is mounted, and a reflection that reflects light from the light emitting element. A light emitting unit A having a light emitting element and a reflector, a main body 14 on which the light emitting unit is arranged, a light control member 15 for controlling light emitted from the light emitting unit, a lighting device 16 for lighting the light emitting element, and a base member 17. To do.

  The light-emitting element 11 is composed of a semiconductor light-emitting element, in this embodiment a light-emitting diode (hereinafter referred to as “LED”), and a plurality of the same performance, in this embodiment, eight LEDs 11 are prepared. In the present embodiment, the LED comprises a blue LED chip and a high-brightness, high-power LED that emits white light by a yellow phosphor excited by the blue LED chip, and further in one direction, that is, along the optical axis xx of the LED. Light rays are mainly emitted. Here, the optical axis xx is substantially perpendicular to the surface of the base 12 on which the LED 11 is mounted (FIG. 1B).

  The base 12 is made of a circuit board, and the circuit board is made of a metal having good thermal conductivity, which is aluminum having a substantially disk shape in this embodiment, and its surface (upper surface in FIG. 1A). A wiring pattern made of copper foil is formed through an electrical insulating layer such as a silicone resin, and the eight LEDs 11 are formed on the wiring pattern so that the remaining seven centering on one of them is substantially concentric. Accordingly, the plurality of LEDs 11 are arranged so as to be substantially symmetrical at the center of the disk-shaped base 12. Each LED 11 is connected in series by a wiring pattern. The

  The reflector 13 is integrally formed in a disc shape with a synthetic resin having weather resistance, heat resistance and electrical insulation, in this embodiment, PBT (polybutylene terephthalate). On the surface side of the disk, a plurality of recesses 13a having the same shape and dimensions, with the inner surface being a paraboloid and having an inner surface forming a paraboloidal shape, eight in this embodiment, were mounted on the substrate 12. The remaining seven recesses 13a are integrally formed so as to be substantially concentrically arranged at substantially equal intervals around the one recess 13a so as to face each of the eight LEDs 11. Aluminum is vapor-deposited on the outer surface of the reflector 13 and the inner surface of the recess 13a having the above-described configuration, and is mirror-finished.

  As shown in an enlarged view in FIG. 1B, the recess 13a constitutes eight individual reflectors, and the amount of light from the LED 11 that is a light source is applied to a light shielding wall 14f described later. In order to reflect light so as to reduce the light distribution and to obtain a rotationally symmetric light distribution, a “mortar-shaped” reflective surface 13b having a circular cross section is formed so as to surround the light emitting region of the LED 11, and the opening of the recess 13a is formed. The light emitting portion 13c is formed as a through hole 13d at the bottom. An opening 13e having a space inside is formed on the back side of the disk constituting the reflector 13.

  The base body 12 on which each LED 11 configured as described above is mounted is in contact with the opening 13e of the reflector 13, and is fixed and supported by a heat-resistant adhesive such as silicone resin or epoxy resin. Thereby, each LED 11 is arranged so as to be exposed and exposed to the center of the through-hole 13d formed in the bottom surface of each concave portion 13a of the reflector 13, and is configured by each concave portion 13a. The optical axis yy of the LED 11 and the optical axis xx of the LED 11 are substantially coincident with each other. Thereby, the flat plate-like light emitting unit A is formed by combining the flat plate-like base 12 and the disk-like reflector 13 (FIG. 1B).

  The main body 14 is made of a metal having good thermal conductivity, which is aluminum in this embodiment, and has a large-diameter opening 14a at one end having a substantially circular cross section, and a small-diameter opening 14b at the other end. The outer surface is formed into a shape that approximates the silhouette of the neck part of an incandescent light bulb so that the outer peripheral surface forms a substantially conical tapered surface whose diameter gradually decreases from one end to the other. A large number of radiating fins 14c projecting radially from one end to the other end are integrally formed on the surface. These main bodies 14 are processed, for example, by casting, forging, cutting, or the like, and are configured to have a cavity inside.

  The opening 14a at one end of the main body 14 is integrally formed with a support step 14e having a smooth surface so that the recess 14d is formed, and the light emitting unit A having the above-described configuration is disposed in the recess 14d. Is done. That is, the back side of the circuit board constituting the base 12 in the light emitting unit A is inserted from the opening end of the opening 14a at one end of the main body 21, and the support step 14e of the recess 14d has thermal conductivity and is electrically insulated. It is brought into close contact with an insulating sheet made of a silicone resin or the like having adhesive properties or an adhesive, and is supported by a fixing means such as a screw.

  As a result, the light emitting unit is arranged at a position where the reflector 13 is inserted from the opening end of the opening 14a of the main body 14, and the light shielding wall 14f is provided between the periphery of the light emitting unit and the opening end to reflect the light. Around the body 13, in other words, around each LED 11 integrated with the reflector, a light shielding wall 14f having a wall around the recess 14d is provided. The height dimension h of the light shielding wall 14f (the length from the uppermost part of the light emitting unit to the opening 14a of the main body 14) is 5 to 20 mm, preferably 7 to 15 mm. If it is 5 mm or less, the glare prevention effect is low, and if it exceeds 20 mm, optical control for obtaining a desired light distribution becomes difficult. Thereby, the optical axis aa of the light emitting unit A substantially coincides with the central axis bb of the main body 14 (FIG. 1A), and the light emitting portion 13 c of the reflector 13 is further opened by the opening 14 a of the main body 14. The light source unit B is disposed in a state of being recessed inside and has a substantially circular light emitting surface as a whole in plan view.

  The light source B of the main body 14 configured as described above is provided with a light control member that controls the emitted light of the light emitting unit A. In this embodiment, the light control member is formed of a reflection member 15 that is provided around the inner side of the light shielding wall 14f of the main body 14 so as to cover the light shielding wall 14f of the main body 14 and reflects the light emitted from the light emitting unit A. The reflecting member 15 reflects the direct light of the LED 11 that is shielded by the light shielding wall 14f of the main body 14 or the reflected light of the reflector 13, and a wide-angle light distribution is obtained in order to approximate the light distribution of the incandescent bulb. A ring having a “dish-like” reflecting surface 15a which is formed of a reflecting plate and has a circular shape in cross section and gradually decreases in diameter so as to cover the light shielding wall 14f in order to obtain a light distribution having a rotationally symmetric shape. It consists of a frame. In consideration of light reflection performance, the material is a synthetic resin having weather resistance, heat resistance, and electrical insulation, and in this embodiment, aluminum is vapor-deposited on the surface of the PBT and mirror-finished.

  The outer diameter of the ring-shaped frame is such that the light-shielding wall 14f of the recess 14d of the main body 14 can be covered from the inside, and the inner diameter is such that the seven recesses 13a constituting the individual reflectors 13 are shielded. In order to avoid this, the size is larger than the outer circumference of the virtual concentric circle drawn by the seven recesses 13a. As a result, among the light radiated from the LEDs 11 through the recess 13a of the reflector 13, the light that is originally shielded by the light shielding wall 14f of the main body and causes light loss can be reflected by the reflecting surface 15a. .

  A transparent cover member 18 made of acrylic resin or the like is covered with the opening having a large outer diameter of the reflection member 15 constituted as described above, and each LED 11 exposed in the through hole 13d of the reflector 13 is protected. And charging parts and the like are covered. The cover member 18 and the reflecting member 15 are integrally formed during resin molding. That is, at the time of resin molding of the cover member 18 made of acrylic resin, the opening end portion of the reflecting member 15 made of PBT is integrated by resin molding so that the opening portion having a large inner diameter is connected. The cover member 18 and the reflection member 15 may be configured separately and assembled individually.

  The reflection member 15 and the cover member 18 configured as described above are fitted into the opening 14a at one end of the main body 14, and the reflection member 15 surrounds each recess 13a of the reflector 13 and is positioned so as to cover the light shielding wall 14f. In this way, the light emitting part 13c of the reflector 13 is provided and the outer peripheral step part of the reflecting member 15 contacts the opening end part of the main body opening part 14a, and the contacted part is heat resistant such as silicone resin or epoxy resin. It is fixed with an adhesive.

  A case member 19 for receiving the lighting device 16 and supporting the base member 17 is fitted into the hollow main body 14. The case member 19 is made of a synthetic resin having heat resistance and electrical insulation, such as PBT, and has a slightly large diameter opening at one end and a small diameter opening at the other end. It is formed in a cylindrical shape substantially along the line. Further, the small-diameter opening at the other end is integrally closed by a bottom plate 19b in which a lead wire insertion hole 19a is formed, and a base attaching portion 19c having a step shape is integrally formed on the outer periphery. A guide groove 19d is integrally formed on the inner surface of the case member 19 along the axial direction of the cylinder, and a flat circuit board 16a constituting the lighting device 16 is fitted into the guide groove in the vertical direction and supported. Is done. Thereby, electrical insulation is made between the main body 14 made of aluminum and the circuit board 16a. The guide groove 19d and the circuit board 16a may be fixed with a heat-resistant adhesive made of silicone resin or epoxy resin.

  As described above, the case member 19 in which the circuit board 16a is housed is inserted from the opening 14a at one end of the main body 14, and is fitted so that the base mounting portion 19c protrudes from the opening 14b at the other end. It is supported in the cavity of the body 14. A heat-resistant adhesive such as silicone resin or epoxy resin may be applied and fixed to the case member 19 and the inner wall of the main body 14. Further, the base member 17 is fitted into the outer peripheral surface of the base attaching part 19c protruding from the opening part 14b at the other end of the main body 14, and is fixed using caulking or a heat-resistant adhesive such as silicone resin or epoxy resin. Thereby, the external shape of the outer peripheral surface from the main body 14 to the base member 17 is configured to approximate the neck silhouette of the incandescent bulb. The lighting circuit of the lighting device 16 is configured to convert the AC voltage 100V into a DC voltage 24V and supply the converted voltage to each LED 11. In addition, the electric wire for LED electric power feeding is connected to the output terminal of the circuit board 16a, and it connects with LED11 mounted in the base | substrate 12 and wiring-connected in series. An input line is connected to the input terminal.

  The base member 17 is an Edison type E26 type, and includes a cylindrical shell portion 17a having a thread and an eyelet portion 17c provided on the top of the lower end of the shell portion via an insulating portion 17b. The opening of the shell portion 17a is fitted into the base attachment portion 19c of the case member 19 and is fixed by adhesion or caulking. As a result, the main body 21 made of aluminum and the base member 17 are electrically insulated. An input line derived from an input terminal of the circuit board 22a is connected to the shell portion 17a and the eyelet portion 17c of the base member 17.

  Next, an assembly procedure of the light bulb-shaped lighting device 10 configured as described above will be described. First, the electric wire connected to the input terminal of the circuit board 16 a constituting the lighting device 16 is drawn out from the insertion hole 19 a formed in the bottom plate 19 b of the case member 19.

  Next, the electric wire connected to the output end of the circuit board 16a is connected to the input terminal of the base body 12 of the light emitting unit A, and the circuit board 16a to which the light emitting unit A is connected is vertically inserted into the case member 19, Further, both ends of the circuit board are fitted and supported in the guide grooves 19d.

  Next, the case member 19 to which the light emitting unit A is connected and the circuit board 16a is accommodated is inserted from the opening 14a at one end of the main body 14 so that the base attaching portion 19c protrudes from the opening 14b at the other end. Fit.

  Next, the back side of the circuit board of the light emitting unit A inserted into the main body 14 together with the circuit board 16a is thermally conductive and electrically insulative to the support step 14e formed in the concave portion 14d of the main body 14. The adhesive is made of an adhesive made of silicone resin, and the periphery is fixed at about three locations from the upper surface side (surface side) using a fixing means such as a screw. As a result, the back surface of the circuit board of the base 12 and the smooth surface of the support step portion 14e are fixed in close contact with each other, and the reflector 13 constituting the light emitting unit A is recessed from the opening end portion of the opening portion 14a of the main body 14. Housed in state.

  Next, the cover member 18 is fitted into the opening 14 a of the main body 14 so as to cover the opening 14 a of the main body 14, that is, the light emitting surface of the LED 11 and the reflector 13. Thereby, the outer peripheral step of the reflecting member 15 integrated with the cover member 18 contacts the opening end of the opening 14a of the main body, and the adhesive is applied and fixed to the contacted portion. As a result, the reflecting member 15 is provided in the opening 14a of the main body 14 so as to surround each concave portion 13a of the reflector 13 and cover the light shielding wall 14f.

  Next, the electric wire drawn out from the insertion hole 19a of the case member 19, that is, the input line led out from the input terminal of the circuit board 16a, is connected to the shell portion 17a and the eyelet portion 17c of the base 17 and is connected. The shell portion 17a is fitted into the base attaching portion 19c protruding from the opening portion 14b of the main body 14 and fixed with an adhesive.

  As described above, the light source part B having a substantially circular light emitting surface is formed at one end, the appearance shape approximates the silhouette of the neck part of a general incandescent bulb, the E26 type cap is provided, and the rated lamp power is about 5 W. The lighting device 10 is configured as a light bulb shaped LED lamp having a brightness equivalent to the incandescent light bulb 100W.

  Next, the structure of the lighting fixture which used the lightbulb-shaped illuminating device 10 comprised as mentioned above as a light source is demonstrated. As shown in FIG. 3, reference numeral 20 denotes an existing downlight type lighting fixture that is embedded in a ceiling surface X of a store or the like and uses an incandescent bulb having an E26-type base as a light source, and has a metal having an opening 21a on the lower surface. The main body case 21 has a box shape made of metal, a metal reflector 22 fitted into the opening 21a, and a socket 23 into which an E26-type cap of an incandescent lamp can be screwed. The reflector 22 is made of, for example, a metal plate such as stainless steel, and a socket 23 is installed at the center of the top plate of the reflector 22.

  In the existing lighting fixture 20 for incandescent bulbs configured as described above, the lighting device 10 as a bulb-type LED lamp using the LED 11 as a light source is used in place of the incandescent bulb for energy saving and long life. . In other words, since the bulb-shaped lighting device 10 has the base member 17 in the E26 shape, it can be directly inserted into the incandescent bulb socket 23 of the lighting fixture. At this time, the main body 14 of the light bulb-shaped lighting device 10 has a substantially conical tapered surface, and the appearance is configured to approximate the silhouette of the neck portion of the incandescent light bulb. It can be smoothly inserted without hitting the surrounding reflector 22 or the like, and the application rate of the light bulb-shaped lighting device 10 to the existing lighting fixture is improved. Thereby, the energy-saving downlight in which the illuminating device as a light bulb-type LED lamp using LED as a light source is installed is configured.

 When power is applied to the downlight configured as described above, power is supplied from the socket 23 via the cap member 17 of the light bulb-shaped lighting device 10, the lighting device 16 operates, and a DC voltage of 24V is output. This DC voltage is applied to the LEDs 11 connected in series via an LED power supply wire connected to the output terminal of the lighting circuit. Thereby, all the LEDs 11 are turned on simultaneously, and white light is emitted.

  At this time, since one LED 11 is centered on the surface of the base 12 and the remaining seven LEDs 11 are mounted and arranged at substantially equal intervals so as to form a substantially concentric circle, the light is emitted from each LED 11. As shown in FIG. 4A, the light is reflected so that the amount irradiated to the light shielding wall 14f through the reflecting surface 13b of the recess 13a of the reflector 13 is reduced, and is reflected around the entire inner surface of the cover member 15. Radiated almost uniformly toward the camera. At the same time, the light indicated by a in the figure, that is, the direct light of the LED 11 or the light reflected by the reflector 13 is reflected by the dish-like reflecting surface 15a of the reflecting member 15 and radiated toward the inner side surface of the cover member 15. .

  The light a traveling from the reflector 13 to the side is originally shielded by the light shielding wall 14f of the main body opening 14a and causes light loss, but is reflected and emitted toward the cover member 15 by the wide-angle reflecting member 15. As a result, the amount of light on the side of the cover member 15 increases, and illumination with a light distribution characteristic approaching that of an incandescent bulb can be performed. In particular, when the light distribution of the light bulb-shaped lighting device 10 serving as the light source approaches the light distribution of the incandescent light bulb, the amount of light irradiated to the reflector 22 in the vicinity of the socket 23 disposed in the lighting fixture 20 increases. By utilizing the optical design of the reflector 22 configured for an incandescent lamp, it is possible to obtain appliance characteristics substantially as designed.

  Further, when the light bulb-shaped lighting device 10 is turned on, the temperature of each LED 11 rises and heat is generated. The heat is transmitted from the base body 12 made of aluminum to the support step portion 14e to which the base body is closely attached and fixed, and is radiated from the main body 14 made of aluminum to the outside air through the radiation fins 14c. At this time, since the base body 12 and the main body 14 are made of aluminum having good thermal conductivity, the heat generated in the LEDs 11 can be effectively dissipated with reduced conduction loss. Unevenness is prevented, a decrease in light emission efficiency is suppressed, a decrease in illuminance due to a decrease in luminous flux can be prevented, and at the same time, the life of the LED can be extended. Moreover, it can be reduced in weight by aluminum and does not become heavy as a light bulb.

  A recess 14d is formed in the opening 14a at one end of the main body 14, and the reflector 13 constituting the light emitting unit A is accommodated in a state of being recessed from the opening 14a of the main body 14 into the recess. Therefore, the recess 14d is formed with the light shielding wall 14f around the wall. Thereby, since the main body can be made larger (longer) by the amount of the light shielding wall, the heat radiation area of the main body 14 can be increased, and heat can be radiated more effectively. The heat generated from the circuit components of the lighting device 16 is radiated from the circuit board 16 a through the main body 14 and the base member 17. Due to these heat radiation effects, temperature rise and temperature unevenness of the lighting device 16 are suppressed, and the reliability of the circuit components can be improved.

  As described above, according to the present embodiment, the reflector 13 of the light emitting unit A is disposed at a position recessed from the opening end of the opening 14a of the main body 14 so that the amount of light irradiated to the light shielding wall 14f is reduced. Since it is configured to reflect, the light output is prevented from being lowered by the light shielding wall 14f. The light shielding wall 14f is provided between the periphery of the light emitting unit A and the opening end of the main body 12 so as to stand from the periphery of the light emitting unit A toward the light emission direction. Therefore, the light emitting element is hardly seen directly, and glare is suppressed. Furthermore, since the reflecting member 15 provided around the inner side of the light shielding wall 14f of the main body 14 reflects the direct light of the LED 11 shielded by the light shielding wall 14f or the reflected light by the reflector 13, the light loss is reduced. However, it is possible to approximate the light distribution of an incandescent bulb. With these configurations, it is possible to provide an illuminating device that can prevent a glare and suppress a decrease in light output and bring it closer to a desired light distribution.

  Moreover, even if it uses it instead of the incandescent lamp of the existing lighting fixture 20, the light distribution characteristic which approached the light distribution of the incandescent lamp because the light distribution of the light bulb-shaped lighting device as the light source approaches the light distribution of the incandescent lamp. An energy-saving lighting fixture having In addition, because the appearance of the light bulb-shaped lighting device is configured to approximate the silhouette of the neck portion of an incandescent light bulb, it can be smoothly inserted into the socket even when it is installed instead of an incandescent light bulb. As a result, it is possible to improve the rate of application to existing lighting fixtures.

  Further, the reflector 13 of the light emitting unit A is disposed at a position recessed from the opening end of the opening 14a of the main body 14, and the reflecting member 15 is provided so as to cover the light shielding wall 14f. Combined with the heat radiation effect due to the increase in the heat radiation area of the main body, the light distribution by the reflecting member 15 can be close to the light distribution of the incandescent bulb.

  The light source part B of the main body opening 14a has a light shielding wall 14f that is darkened to form the concave part 14d covered with a beautiful reflecting member 15 vapor-deposited with aluminum, and the concave part 13a of the reflector 13 with vapor-deposited aluminum. It is possible to provide a light bulb-shaped lighting device that is configured to form a “mortar-shaped” reflecting mirror that shines beautifully when combined, and is excellent in appearance and design.

  Since the cover member 18 and the reflection member 15 are integrally formed at the time of resin molding, the reflection member 15 can be assembled at the same time simply by fitting the cover member 18 into the opening end 14a of the main body 14, thereby simplifying the operation. This is advantageous in terms of cost. At the same time, the reflecting member 15 can be automatically and reliably disposed at a predetermined position covering the light shielding wall 14f, and the reflecting performance is not impaired by a positional shift or the like, and stable optical characteristics can be exhibited. .

  As described above, in the present embodiment, the main body 14 of the light bulb-shaped lighting device has an outer surface portion that is exposed to the outside, for example, an uneven surface or a satin surface shape to increase the surface area, or white coating or white alumite treatment. Thus, the thermal emissivity of the outer surface portion may be increased. Also, when white paint or white alumite treatment is applied, when the light bulb-shaped lighting device is mounted on a lighting fixture and lit, the reflectance of the outer surface of the aluminum main body 14 exposed to the outer surface is increased, and the appliance efficiency is increased. In addition, the appearance and design are improved, and the product quality can be improved.

  Although the circuit board 16a of the lighting device 16 is disposed in the longitudinal direction inside the case member 19, the circuit board may be configured to be smaller and disposed in a lateral direction (horizontal direction) or obliquely. Good. Moreover, although the base member 17 is configured in the E26 type, other types such as E17 type may be used, and a base other than the Edison type may be used.

 In this embodiment, the light control member is composed of light diffusing means formed on at least the peripheral edge of a light-transmitting cover member. Hereinafter, description will be made with reference to FIGS. 5, 6, and 4 (b). 5, 6, and 4 (b), the same parts as those in FIGS. 1 to 4 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In this embodiment, the cover member is a glove that covers the opening 14a of the main body 14. The globe 30 is translucent, and is made of, for example, a synthetic resin such as polycarbonate having a small thickness, and is formed into a smooth curved surface whose overall shape approximates the silhouette of the ball portion of the incandescent bulb. Further, the light diffusion means 40 is formed with a transparent central portion formed in a curved shape and a milky white periphery.

  Further, the opening 30a having a tubular shape is integrally formed by reducing the diameter on the opening side, and a step portion 30b is formed around the recessed cylindrical opening 30a. Further, as shown in FIG. 6, the plurality of heat radiating fins 14c of the main body 14 are formed to extend to the opening end portions of the main body opening portions 14a, and the end portions (opening side) of the gaps s formed between the fins. The end of the light source is formed to be open so that light can be taken in.

  The glove 30 having the above-described configuration is fitted into the concave portion 14d of the main body 14 in the same manner as in the first embodiment, and a contact portion between the cylindrical opening 30a of the glove and the inner peripheral surface of the concave portion 14d of the main body is silicone resin, epoxy resin, or the like. Fix with heat resistant adhesive. Thereby, the step part 30b formed in the circumference | surroundings of the opening 30a of the globe 30 is located in the upper surface of each clearance gap s formed between the several radiation fin 14c. In other words, the gap s between the fins whose upper ends are open is positioned to face the light diffusing means 40 that is the milky white part of the glove periphery.

  Further, the main body 14 in the present embodiment is constituted by a main body case 14g and a cover 14h made of a metal having good thermal conductivity such as aluminum. The main body case 14g is integrally formed with a smooth support portion 14e 'on the bottom surface of the recess 14d, and integrally formed with a large number of radiating fins 14c projecting radially from one end to the other end on the outer peripheral surface. The cover 14h is a heat-resistant and electrically insulating synthetic resin such as white PBT, and has a slightly large diameter opening at one end and a small diameter opening at the other end, and the diameter is stepped. It is formed so as to form a cylindrical shape that decreases, and the appearance is configured to be close to the silhouette of the neck portion of the incandescent bulb.

  When the light bulb-shaped lighting device 10 configured as described above is turned on, the amount of light emitted from each LED 11 is applied to the light shielding wall 14f through the concave portion 13a of the reflector 13 as shown in FIG. Is reflected almost uniformly toward the entire inner surface of the globe 30, and light is emitted from the transparent portion. At the same time, direct light from the LED 11 or light reflected by the reflector 13 is reflected on the periphery of the globe 30. Also radiated to the inner surface. The light b is diffused when passing through the light diffusing means 40 formed at the peripheral portion, that is, the milky white portion, and passes through the gap s in which the upper ends of the radiating fins 14c are opened. That is, light is diffused and emitted also in the upper direction when the lighting device is mounted on the fixture. Thereby, according to the illuminating device 10 as a lightbulb-shaped LED lamp of a present Example, light can be radiated back, ie, the nozzle | cap | die side, and it can be brought closer to the light distribution of an incandescent lamp. Although the light diffusing unit 40 is configured by forming only the peripheral part of the globe 30 in milky white, the light diffusing unit may be configured in the peripheral part by forming the entire globe in milky white.

  Further, according to the present embodiment, the plurality of radiating fins 14c of the main body 14 are formed to extend to the opening end of the main body opening 14a, and the end of the gap s formed between the fins emits light. Since it is formed so that it can be taken in, the light b diffused by the light diffusing means 40 at the periphery of the globe can be effectively radiated to the rear side, that is, the base side without being blocked by the heat radiating fins 14c. It can be made closer to the light distribution of incandescent bulbs.

  Further, the main body case 14g is integrally formed with a support portion 14e 'formed of a smooth surface on the bottom surface of the recess 14d so as to support the light emitting unit A, that is, the base 12 in close contact with each other. It is possible to dissipate heat effectively with less conduction loss. Other configurations, operations, operational effects, modifications, and the like in this embodiment are the same as those in the first embodiment.

 In this embodiment, the light control member is configured by combining the reflecting member 15 of the first embodiment and the light diffusion means 40 of the second embodiment. Hereinafter, a description will be given with reference to FIGS. 7 and 4C. 7 and 4 (c), the same parts as those in FIGS. 1 to 4 of the first embodiment and FIGS. 5, 6 and 4 (b) of the second embodiment are denoted by the same reference numerals, and the details are as follows. Detailed explanation is omitted.

  In the present embodiment, in the globe 30 provided with the light diffusing means 40 at the peripheral edge of the second embodiment, the reflecting member 15a is formed by inclining the cylindrical opening 30a and depositing aluminum on the inner surface thereof to form the reflecting surface 15a. 15 is formed integrally or separately. According to this, as shown in FIG. 4 (c), the amount of light on the side is increased by the light a by the reflecting member 15, and the rear side, that is, the base side by the light b by the light diffusing means 40 at the periphery of the globe. Can also emit light, making it even closer to the light distribution of an incandescent bulb.

  In addition, other configurations, operations, effects, and modifications 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 illuminating device which concerns on 1st Example of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is sectional drawing which expands and shows the principal part of a reflector. The lighting device is similarly shown, (a) is a perspective view showing a state where the reflecting member and the main body are separated, and (b) is a perspective view showing a state where the reflecting member is mounted on the main body. Sectional drawing which shows roughly the lighting fixture which similarly mounted the illuminating device. Similarly, it shows the light distribution state of the illumination device, (a) is a diagram showing the light distribution state in the illumination device of the first embodiment, (b) is a diagram showing the light distribution state in the illumination device of the second embodiment, (C) is a figure which shows the light distribution state in the illuminating device of a 3rd Example. The longitudinal cross-sectional view which shows the illuminating device which concerns on the 2nd Example of this invention. Similarly, the illuminating device which concerns on a 2nd Example is shown, (a) is a perspective view which shows the state which isolate | separated the glove | globe and the main body, (b) is a perspective view which shows the state which mounted | wore the glove | globe with the main body partially. The longitudinal cross-sectional view which shows the illuminating device which concerns on the 3rd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device A Light emitting unit 11 Light emitting element 12 Base body 13 Reflector 13c Light-emitting part 14 Main body 14a Opening part 14f Light-shielding wall 15 Light control member 16 Lighting device 17 Base member 18 Cover member 20 Lighting fixture 21 Appliance main body 23 Socket 40 Light diffusion means

Claims (4)

A flat light emitting unit having a light emitting element and a reflector for reflecting the light of the light emitting element;
A main body in which an opening is formed at one end, a light emitting unit is disposed at a position where the reflector is inserted from the opening end of the opening, and a light shielding wall is provided between the periphery of the light emitting unit and the opening end When;
A light control member that is provided in the opening of the main body and controls the light emitted from the light emitting unit;
A base member supported by the other end of the main body;
A lighting device for lighting the light emitting element;
An illumination device comprising: The lighting device according to claim 1, wherein the light control member is formed of a reflection member that is provided around the inner side of the light shielding wall of the main body and reflects light emitted from the light emitting unit. The lighting device according to claim 1, wherein the light control member includes a light diffusing unit formed at least at a peripheral portion of a light-transmitting cover member that covers the opening of the main body. An instrument body provided with a socket;
The lighting device according to any one of claims 1 to 3, wherein the lighting device is mounted on a socket of an appliance body;
The lighting fixture characterized by comprising.

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