JP5495092B2 - Lighting device and lighting fixture - Google Patents

Description

  The present invention relates to a lighting device and a lighting fixture using a semiconductor 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, in Patent Document 1, a light-emitting diode mounted on a substrate, a lighting device that lights the light-emitting diode, and a lighting device are housed, a base is attached to one side, and a cover is attached to the substrate on the other side. And the LED bulb | ball which consists of a translucent glove attached to the other side of the cover so that a light emitting diode may be covered is shown.
JP 2008-91140 A

  On the other hand, a light emitting diode as a light emitting source emits light by a light emitting action of a semiconductor, unlike a light emitting diode that emits light by generating heat, and has a significantly longer life than a filament light bulb. . For this reason, it has been used as a light source for lighting fixtures in general homes for a long period of time, and ensuring safety at the end of life is important. In order to obtain a light distribution performance similar to that of a general incandescent bulb by approximating the appearance of a general incandescent bulb, the structure of the lighting device using these light emitting diodes as a light source, in particular, the globe is made of synthetic resin or glass. It consists of On the other hand, the main body is made of a metal having good thermal conductivity such as aluminum in order to dissipate heat of the light emitting diode as a light emitting source and suppress a decrease in luminous efficiency.

  For this reason, the joint between the globe and the main body must be made of materials of different materials, withstand heat from the light emitting diode, withstand ultraviolet rays, etc. Since it is necessary to withstand various conditions such as durability, it is performed using an adhesive made of silicone resin or epoxy resin.

  However, even if the adhesive satisfies these conditions, the adhesive may deteriorate over a long period of time depending on the conditions of use. If the adhesive deteriorates, the glove of the lighting device attached to the lighting device may fall. Even if it does not fall, when it is removed from the socket in order to replace the bulb, if the glove is gripped and rotated, the adhesive may be peeled off and only the glove may be removed, leaving the main body part in the socket. If the main body part remains in the socket, a charging part such as a light emitting diode is exposed and dangerous, and there is a possibility that the gripping margin is reduced and the socket cannot be removed.

  As shown in Patent Document 1, particularly paragraph numbers [0030] and [0033], in this type of LED bulb, the silicone resin or the like is used in a state where the end of the globe is simply fitted inside the cover. Generally, it is bonded by an adhesive such as an epoxy resin and has not yet solved the above problem. These problems are not limited to the connection between the globe and the main body, but also have similar problems in the connection with various components connected to the main body. For this reason, in this kind of lighting device using a semiconductor light emitting element such as a light emitting diode as a light source, it is possible to realize a lighting device in which components are securely coupled to the main body even at the end of the lifetime over a long period of use. Is an important issue.

The present invention has been made in view of the above problems, and in an illumination device using a semiconductor light emitting element having a long lifetime as a light source, the illumination device and the illumination fixture in which a cover member coupled to the main body is securely coupled at the end of the lifetime. Is to provide.

Invention of the lighting device according to claim 1, the semiconductor light emitting element and; integrally openings having a cylindrical shape at one end; a cylindrical end portion and the semiconductor light emitting element is disposed a metallic to side body consists of the formed synthetic resin, and a cover member of said light-transmitting provided to cover the semiconductor light emitting element to the body; and a lighting device for lighting the semiconductor light emitting element; provided on the other end side of the body The main body is provided with a notch in an end edge on one end side, and an engagement groove is formed along at least a part of the inner peripheral surface on the one end side. The member has an engaging means that engages with the main body, and the engaging means includes a protrusion formed on the outer peripheral surface of the cylinder so as to engage with the engaging groove of the main body. Said fall prevention means and said opening to engage with said notch in said body An anti-rotation means comprising a convex portion formed on the outer peripheral surface of the cylinder is provided, and the main body and the cover member are in a state in which the convex portion is engaged with the projection groove and the notch. It is characterized by being fixed with an adhesive .

According to the present invention, a semiconductor light emitting element and; of a synthetic resin formed integrally with openings having a cylindrical shape at one end; a cylindrical end portion and the semiconductor light emitting element is disposed a metallic to side body is, and the translucent cover member provided to cover the semiconductor light emitting element to the body; and a lighting device for lighting the semiconductor light emitting device; and the base member provided on the other end of said body; The main body is provided with a notch at an end edge on one end side, an engagement groove is formed along at least a part of the inner peripheral surface on the one end side, and the cover member includes the main body and An engaging means for engaging, and the engaging means includes a drop preventing means constituted by a protrusion formed on a cylindrical outer peripheral surface of the opening so as to engage with the engaging groove of the main body; Formed on the cylindrical outer peripheral surface of the opening to engage with the notch of the main body An anti-rotation means comprising a convex portion is provided, and the main body and the cover member are fixed with an adhesive in a state in which the projection portion is engaged with the engaging groove and the convex portion is engaged with the notch. Accordingly, in the illumination device using a semiconductor light emitting element having a long life as a light source, the main body and the cover member are in a state where the protrusion is engaged with the engagement groove and the projection is engaged with the notch. Since it is fixed with an adhesive, the cover member and the main body are securely connected to each other, and even if the adhesive for fixing the main body and the cover member is deteriorated at the end of its life, the cover is connected to the main body. It is possible to configure the lighting device in which the members are securely coupled and are prevented from being easily detached from the socket.
Also, the main body is made of a cylindrical metal, the cover member is made of a synthetic resin integrally formed with a cylindrical opening, and the fall prevention means and the rotation prevention means have an engagement groove, a protrusion, a notch The engagement means can be easily and reliably configured by simple means such as metal casting, forging, cutting, or molding of synthetic resin, and the processing work is simple. Thus, a lighting device that is advantageous in terms of cost can be configured.

In the present invention, the lighting device is a bulb-shaped lighting device (A
Shape or PS type), Ref type bulb-type lighting device (R type), ball-type bulb type lighting device (
G-type), a lighting device (T-shaped cylindrical bulb-type) but it may also be configured to like. Or the present invention is not limited to the lighting device is approximated to the shape of the incandescent bulbs, other various external shape, can be applied to a lighting apparatus that forms the application.

  As the semiconductor light-emitting element, a light-emitting element using a long-life semiconductor such as a light-emitting diode or a semiconductor laser as a light source is allowed. It is preferable that a plurality of semiconductor light emitting elements are configured. However, 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 so that. Furthermore, it may be composed of one semiconductor light emitting element. The semiconductor light emitting element is preferably configured to emit white light, but may be configured to be red, blue, green, or a combination of various colors depending on the use of the lighting fixture.

  The main body is preferably formed of a metal having good thermal conductivity, for example, a metal containing at least one of aluminum (Al), copper (Cu), iron (Fe), and nickel (Ni) in order to enhance heat dissipation. However, in addition, you may comprise industrial materials, such as aluminum nitride (AlN) and silicone carbide (SiC). Appearance shape can be applied to existing lighting fixtures by forming a shape that approximates the silhouette of the neck part of a general incandescent bulb so that the diameter gradually decreases from one end to the other. In this case, it is not a condition to approximate a general incandescent lamp, and the shape is not limited to a specific shape.

  The semiconductor light emitting element disposed on one end side of the main body is allowed to be mounted and disposed on the circuit board. The circuit board is preferably composed of a metal having good thermal conductivity such as aluminum in order to enhance heat dissipation, but is composed of a nonmetallic member such as a glass epoxy material, a paper phenol material, or a glass composite. May be. Further, it may be made of ceramics.

The cover member may be a translucent glove such as milky white or the like having transparency or light diffusibility, or a transparent or translucent protective cover for protecting the charging portion of the light emitting diode from the outside .

  As the lighting device, for example, one that constitutes a lighting circuit that converts an AC voltage of 100 V into a DC voltage of 24 V and supplies the converted voltage to the light emitting element is allowed. Moreover, the lighting device may have a dimming circuit for dimming the semiconductor light emitting element.

  As the base member, all bases that can be attached to a socket to which a general incandescent light bulb is attached are allowed, but generally, the most popular types such as Edison type E17 type and E26 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.

Invention of the luminaire according to claim 2, the socket and the instrument body provided; characterized in that it comprises a; and illumination apparatus according to claim 1 which is mounted in the socket of the fixture body . According to the present invention, in a lighting fixture equipped with a lighting device that uses a semiconductor light emitting element having a long life as a light source, the lighting fixture is configured to prevent the lighting device from being easily dropped or removed from the socket at the end of the life of the lighting device. can do.

  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 present invention, the semiconductor light emitting element and; the cylindrically shaped end-side semiconductor light emitting element made of metal which is disposed the body and; and the openings having a cylindrical shape at one end formed integrally synthesis lighting devices and for lighting the semiconductor light emitting element; is made of resin, and the semiconductor light-emitting element is provided so as to cover the light-transmitting cover member to said main body provided on the other end side of the body ferrule The body is provided with a notch on the edge on one end side, an engagement groove is formed along at least a part of the inner peripheral surface on the one end side, and the cover member includes: There is an engagement means that engages with the main body, and the engagement means includes a drop formed by a protrusion formed on a cylindrical outer peripheral surface of the opening so as to engage with the engagement groove of the main body. Cylindrical outer periphery of the opening to engage the notch and the notch of the body The main body and the cover member are further provided with an adhesive in a state in which the protrusion is engaged with the engagement groove and the protrusion is engaged with the notch. In the illuminating device using a semiconductor light emitting element having a long life as a light source, the main body and the cover member are engaged with the protrusion in the engagement groove and the protrusion in the notch. Since the cover member and the main body are securely coupled with each other, the cover member and the main body are securely coupled to each other even if the adhesive for fixing the main body and the cover member is deteriorated at the end of its life. Accordingly, it is possible to provide a lighting device in which the cover member to be securely connected is prevented from being easily detached from the socket.
Also, the main body is made of a cylindrical metal, the cover member is made of a synthetic resin integrally formed with a cylindrical opening, and the fall prevention means and the rotation prevention means have an engagement groove, a protrusion, a notch The engagement means can be easily and reliably configured by simple means such as metal casting, forging, cutting, or molding of synthetic resin, and the processing work is simple. Therefore, it is possible to provide a lighting device that is advantageous in terms of cost.

According to the second aspect of the present invention, it is possible to provide a luminaire that prevents the illuminating device from being dropped or easily removed from the socket at the end of the life of the illuminating device.

  Hereinafter, embodiments of a lighting device and a lighting fixture according to the present invention will be described.

  As shown in FIG. 1 and FIG. 2, the illumination device of the present embodiment constitutes a small light bulb-shaped illumination device 10 corresponding to a mini-krypton bulb, and has a semiconductor light emitting element 11 on one end side of the cylindrical shape. A metal main body 12 provided with a semiconductor light emitting element, a cover member constituting a first coupling member 15 that is engaged with the main body by an engagement mechanism 13 and is coupled by an adhesive 14, and the semiconductor light emitting element are turned on. The lighting device 16 includes a base member 17 provided on the other end side of the main body, and an insulating case 18 constituting a second coupling member 15 provided on the main body so as to be electrically insulated from the base member.

  The semiconductor light emitting element 11 is composed of a light emitting diode (hereinafter referred to as “LED”) in this embodiment, and a plurality of the same performance, that is, four LEDs 11 in this embodiment, are prepared. In the embodiment, 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 are used, and light is mainly emitted in one direction, that is, the optical axis of the LED. . Here, the optical axis is substantially perpendicular to the surface of the circuit board 11a on which the LEDs 11 are mounted.

  The semiconductor light emitting element 11 is configured by being mounted on a circuit board 11a. The circuit board is made of a metal having good thermal conductivity, in this embodiment, aluminum having a flat disk shape, and the surface (the upper surface in FIG. 2) is sandwiched with an electric insulating layer such as silicone resin. Then, a wiring pattern made of copper foil is formed, and four LEDs 11 are mounted and arranged on the wiring pattern at substantially equal intervals so as to form a substantially concentric circle shape. Each LED 11 is connected in series by a wiring pattern.

  The circuit board 11a is formed with a through hole 11b that penetrates the wiring pattern and the electrical insulating layer. The through hole is a through hole through which the electric wire w for supplying power to the LED 11 is inserted from the back surface to the front surface of the circuit board and connected to the electrical connection portion 11c, and the center of the through hole is from the center of the circuit board 11a to the circuit board. It is formed at a position displaced in the outer peripheral direction of the surface while being separated by a dimension a (FIG. 2).

  The LED 11 mounted on the circuit board 11 a as described above is disposed on the cylindrical one end side of the main body 12. The main body 12 is made of a metal having good thermal conductivity, which is aluminum in this embodiment, has a substantially circular cylindrical shape in cross section, and has a large-diameter opening 12a on one end side and a diameter on the other end side. Is formed integrally with the housing recess 12c having a small opening 12b, and the outer peripheral surface forms a substantially conical tapered surface whose diameter decreases gradually from one end to the other, so that the appearance of the neck portion of the mini-krypton bulb is reduced. The shape is approximated to a silhouette. A large number of heat dissipating fins 12d projecting radially from one end to the other end are integrally formed on the outer peripheral surface. These main bodies 12 are processed, for example, by casting, forging, cutting, or the like, and are configured as thick main bodies having no cavities inside.

  In the opening 12a on the cylindrical one end portion side of the main body 12, a support portion 12f having a smooth surface is formed so as to form a circular recess 12e, and the LED 11 is mounted in this recess. A circuit board 11a is provided. That is, the back side of the circuit board is brought into close contact with the support portion 12f via an insulating sheet or adhesive made of a silicone resin having thermal conductivity and electrical insulation, and supported by fixing means such as screws.

  Thereby, the optical axis xx of the light source body which consists of LED11 and a circuit board substantially corresponds to the central axis yy of the main body 12, and the light source part A which has a substantially circular light emission surface by planar view as a whole is comprised. The Further, an insertion hole 12g is formed through which a power supply wire w penetrating substantially along the central axis yy direction from the center portion of the support portion 12f toward the opening portion 12b at the lower end portion. The insertion hole is displaced in the outer circumferential direction by a dimension a (FIG. 2) from the center axis yz of the main body 12 so that the insertion hole communicates with the through hole 11b formed in the circuit board 11a. Form in position.

A cover member, which is a glove in this embodiment, is coupled to the recess 12e formed in the opening 12a on the one end side of the main body 12 configured as described above so as to cover the light source part A having a substantially circular light emitting surface. . This glove constitutes a first coupling member 15 coupled to the main body 12 in the present invention. Glove 15 has a thickness thinner synthetic resin having translucency, such as milky white in this embodiment having a transparent or light diffusing made of polycarbonate, as an off-white here, an opening 15a having a cylindrical shape on one end The integrated appearance is a smooth curved surface that approximates the silhouette of the spherical part of the mini-krypton bulb.
The globe 15 is fitted into the opening 12a on the one end side of the main body 12, and has a cylindrical shape formed by the engaging mechanism 13 around the outer peripheral surface of the cylindrical opening 15a and the periphery of the main body 12 support portion 12f. The inner peripheral surface of the stepped portion 12j is engaged and coupled, and further, for example, double-fixed by an adhesive 14 such as silicone resin or epoxy resin (FIG. 1B).

  As shown in FIGS. 1 and 3 in particular, the engagement mechanism 13 includes a fall prevention means 13a and a rotation prevention means 13b. The fall prevention means 13a includes an engagement groove 13a1 formed on the entire circumference of the cylindrical inner surface of the step portion 12j on the one end portion side of the main body 12, and the engagement groove 13a1 in this embodiment. In the present embodiment, the engaging means that engages is composed of a pair of protrusions 13a2 formed radially opposite to the cylindrical outer peripheral surface of the opening 15a of the globe 15, and in the opening of the cylindrical inner peripheral surface of the step 12j. A pair of protrusions 13a2 are respectively inserted into a pair of guide grooves 13a3 formed of longitudinal grooves formed in the cylindrical end edge 12k and rotated left or right (FIG. 4 (a)), thereby engaging the engagement grooves on the main body side. It is engaged with 13a1 and engaged (FIG. 1 (b)). A pair of guide grooves 13a3 formed of vertical grooves are formed opposite to each other in the radial direction so that one end is open to the cylindrical edge 12k and the other end communicates with the engagement groove 13a1, that is, corresponding to the protrusion 13a2. Is done.

  Thus, when the pair of protrusions 13a2 are engaged with the engaging groove 13a1 and engaged with the central axis yy direction of the main body 12, the lighting device 10 is mounted downward on the lighting fixture. Are engaged with each other in the vertical direction, that is, the direction in which the globe 15 is dropped.

The rotation preventing means 13b includes a notch 13b1 having a predetermined width dimension a (FIG. 4 (b)) formed on the cylindrical edge 12k of the step 12j on the one end side of the main body 12, and an engaging means for engaging with the notch. In the present embodiment, the convex portion 13b2 is formed at the upper part of the cylindrical outer peripheral surface of the opening 15a of the globe 15, and the convex portion 13b2 is inserted into the notch 13b1 on the main body side when the cylindrical opening 15a of the globe is fitted. (Fig. 1 (d)). The width dimension a of the notch 13b1 is formed larger than the width dimension b of the convex part 13b2, and the convex part 13b2 can be inserted into the notch 13b1.

  Accordingly, when the convex portion 13b2 engages with the notch 13b1 and rotates left and right around the central axis y of the main body 12, the convex portion 13b2 contacts the end portion of the notch 13b1, and the globe 15 is integrated with the main body 12. Can be turned. In other words, the rotation of only the globe 15 is prevented, and when the lighting device 10 is mounted on the socket of the lighting fixture, the main body 12 and the base member 17 are brought together without causing the globe to rotate freely even if the globe 15 is gripped and rotated. The globe 15 and the main body 12 are engaged with each other in the rotation direction of the globe 15.

  The adhesive 14 made of the above-described silicone resin or the like is applied to the contact portion between the globe 15 and the step portion 12j of the main body 12 in a state of being engaged by the engagement mechanism 13 including the fall prevention means 13a and the rotation prevention means 13b. Apply and fix. As a result, the globe 15 is coupled to one end of the main body 12, the LED 11 and its charging part are covered and protected by the glove, and the outer peripheral surface shape of the main body 12 is substantially continuous integrally with the outer peripheral surface shape of the globe 15. The overall shape is configured to more closely approximate the silhouette of the entire mini-krypton bulb.

  The housing recess 12c integrally formed on the other end side of the main body 12 is a recess for disposing the circuit board 16a constituting the lighting device 16 therein, and the cross section is the central axis y of the main body 12 The insertion hole 12g mentioned above is penetrated by the bottom face in the substantially circular shape centering on -y. In the housing recess 12 c configured as described above, an insulating case for fitting the base member 17 and the main body 12 and for electrically insulating the lighting device 16 and the main body 12 is fitted. This insulating case constitutes the second coupling member 15 coupled to the main body 12 in the present invention together with the above-described globe. Hereinafter, the insulating case will be described with the reference numeral “18” in order to distinguish it from a glove which is also a coupling member.

  The insulating case 18 is made of a heat-resistant and electrically insulating synthetic resin such as PBT (polybutylene terephthalate), and an opening 18a is formed at one end, the other end is closed, and the housing recess 12c of the main body 12 is closed. A bottomed cylindrical shape that substantially matches the inner surface shape is formed.

  The insulating case 18 is positioned substantially in the middle of the outer peripheral surface and protrudes so as to form a ring-shaped ridge so as to integrally form a locking portion 18b. A base attaching portion 18c is integrally formed with a stepped outer periphery at a portion protruding earlier from the locking portion. An air vent hole 18b1 is formed on the lower surface of the hook-shaped portion of the locking portion 18b so as to communicate with the outside air when the pressure in the insulating case 18 rises.

  The insulating case 18 configured as described above is fitted into the housing recess 12c of the main body 12, but the fall prevention means 13a having the same configuration as that of the engaging mechanism 13 described above is used to form the outer peripheral surface of the cylindrical insulating case 18 and The cylindrical inner peripheral surface of the storage recess 12c is engaged and coupled, and further, for example, double fixed by an adhesive 14 such as silicone resin or epoxy resin. Hereinafter, the fall prevention means 13a of the engagement mechanism 13 has the same configuration as the fall prevention means of the globe 15 and the main body 12 described above, and the same portions are denoted by the same reference numerals.

  The fall prevention means 13a in the insulating case 18 includes an engagement groove 13a1 formed on at least a part of the inner circumferential surface of the housing recess 12c on the main body 12 side, in this embodiment, and a cylindrical outer circumference on the insulating case 18 side. The engaging means formed on the surface, which is a pair of protrusions 13a2 in this embodiment, is inserted into a pair of guide grooves 13a3 (not shown) made of longitudinal grooves, respectively, It engages with the engagement groove 13a1 (FIG. 1 (c)). Although the guide groove 13a3 formed of a vertical groove is not shown, one end is opened to the cylindrical end edge of the housing recess 12c and the other end communicates with the engagement groove 13a1, as with the guide groove 13a3 of the step 12j of the main body. Thus, a pair is formed opposite to the radial direction, that is, corresponding to the protrusion 13b1.

  As a result, the protrusion 13a2 is engaged with the engagement groove 13a1 and engaged with the central axis yy direction of the main body. When the lighting device 10 is mounted downward on the lighting fixture, the vertical direction That is, it is engaged with the dropping direction of the main body 12 made of the globe 15 and aluminum. Furthermore, the adhesive 14 made of the above-described silicone resin or the like is applied and fixed to the contact portion between the insulating case 18 and the housing recess 12c while being engaged by the fall prevention means 13a. As a result, the insulating case 18 is housed and fixed in the housing recess 12 c of the main body 12.

  Further, a guide groove 18d is integrally formed on the inner surface of the insulating case 18 having the above configuration along the axial direction of the cylinder, and a flat circuit board 16a constituting the lighting device 16 is formed in the guide groove in the vertical direction, that is, The main body 12 is fitted and supported substantially along the central axis yy of the main body 12. Circuit parts constituting the lighting circuit are mounted on the circuit board 16a, relatively large parts such as electrolytic capacitors are concentrated on one side, and small chip parts are mounted on the other side. When the circuit board 16a configured as described above is accommodated in the insulating case 18, the main body 12 made of aluminum and the circuit board 16a are electrically insulated by the insulating case. In the figure, 18 e is an insertion hole formed on the bottom surface and corresponding to the insertion hole 12 g of the main body 12, and the electric wire w is drawn into the insulating case 18.

  The insulating case 18 is further fitted with a base member 17 on the outer peripheral surface of the base mounting part 18c protruding from the opening 12b on the other end side of the main body 12, and has a heat resistance adhesive such as caulking or silicone resin or epoxy resin. Use to fix. Thereby, the external shape of the outer peripheral surface extending from the main body 12 to the base member 17 is configured to approximate the silhouette of the neck portion of the mini-krypton bulb. In addition, the electric wire w for LED electric power feeding is connected to the output terminal of the circuit board 16a, and an input line (not shown) is connected to an input terminal. Moreover, the lighting circuit comprised on the circuit board 16a is comprised so that AC voltage 100V may be converted into DC voltage 24V, and it may supply to each LED11.

  The base member 17 is an Edison type E17 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 portion of the shell portion 17a is fitted into the base attaching portion 18c of the insulating case 18 and fixed by adhesion or caulking. Thereby, the insulation case 18 provides electrical insulation between the main body 12 made of aluminum and the base member 16. An input line derived from an input terminal of the circuit board 16a 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 circuit board 11a on which the LED 11 is mounted is placed on the support portion 12f of the main body 12, and is brought into close contact via an insulating sheet (not shown) having thermal conductivity and electrical insulation, and the upper surface side (surface Fix around 4 places from the side) using fixing means such as screws. At this time, the through hole 11b of the circuit board 11a, the hole of the insulating sheet, and the insertion hole 12g of the main body 12 are aligned and fixed. Thereby, the back surface of the circuit board 11a and the smooth surface of the support portion 12f are fixed in close contact.

  Next, the insulating case 18 is fitted into the housing recess 12c of the main body 12, the pair of protrusions 13a2 is inserted into the guide groove 13a3 (not shown), and when the protrusion hits the engagement groove 13a1, either left or right And is fitted into the engaging groove 13a1 of the housing recess 12c (FIG. 1 (c)), and the adhesive 14 made of silicone resin or the like is applied to the contact portion between the insulating case 18 and the housing recess 12c. Apply and fix. At this time, the insertion hole 18 e of the insulating case 18 is aligned with the insertion hole 12 g of the main body 12.

  Next, the circuit board 16a is inserted vertically into the insulating case 18 while passing the electric wire w pre-connected to the output terminal of the circuit board 16a from the insertion hole 18e of the insulating case 18 toward the insertion hole 12g of the main body 12. The guide groove 18d is fitted and supported. At this time, the tip of the electric wire w is pulled out from the through hole 11b of the circuit board 11a on which the LED is mounted.

  Next, the electric wire w pulled out from the through hole 11b of the circuit board 11a on which the LED is mounted is bent to the circuit board 11a side and connected to the electric wire connection portion 11c provided on the circuit board 11a. Next, an input line (not shown) derived from the input terminal of the circuit board 16a of the lighting device is connected to the shell portion 17a and the eyelet portion 17c of the base member 17, and the opening portion of the shell portion 17a is connected in a connected state. Is fitted into the base attaching portion 18c of the insulating case 18 and fixed with an adhesive.

Next, the glove 15 is prepared, covered so as to cover the light source part A of the main body 12, the glove opening 15a is fitted into the step 12j of the main body 12, and the convex part 13b2 of the glove 15 is inserted into the notch 13b1 of the main body 12. At the same time, the pair of protrusions 13a2 on the glove side are inserted into the pair of guide grooves 13a3 on the main body side (arrow a in FIG. 4A), and the protrusions are engagement grooves. When it hits 13a1, it is rotated in either the left or right direction (arrow b in FIG. 4A), and the protrusion 13a2 is fitted into the engagement groove 13a1 of the step 12j on the main body side to engage (FIG. 1). (B)). Further, an adhesive 14 made of silicone resin or the like is applied and fixed to the contact portion between the globe 15 and the stepped portion 12j. As a result, a small bulb having a brightness equivalent to a mini-krypton bulb 10W having a glove 15 at one end and an E17-shaped base member 17 at the other end and having an overall external shape approximating the silhouette of a mini-krypton bulb. A shaped illumination device 10 is configured.

  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. 5, 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 a mini-krypton bulb having an E17-shaped base as a light source, and has an opening 21a on the lower surface. It consists of a main body case 21 in the shape of a metal box, a metal reflector 22 fitted into the opening 21a, and a socket 23 into which an E17-shaped base of a mini-krypton bulb 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 a mini-krypton bulb configured as described above, a small bulb-type lighting device 10 using the LED 11 as a light source is used in place of the mini-krypton bulb for energy saving and long life. To do. That is, in the small light bulb-shaped lighting device, the base member 17 is formed in the E17 shape, so that it can be directly inserted into the socket 23 for the mini-krypton light bulb of the lighting fixture. At this time, the main body 12 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 mini-krypton light bulb. It can be smoothly inserted without hitting the reflector 22 or the like around the socket, and the application rate of the light bulb-shaped lighting device 10 to the existing lighting fixture is improved. Thereby, an energy-saving downlight in which a small bulb-shaped illumination device using the LED 11 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 each LED 11 connected in series via an LED power supply wire w 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 the four LEDs 11 are mounted on the surface of the circuit board 11a at substantially equal intervals so as to be substantially concentric, light emitted from each LED 11 is directed toward the entire inner surface of the globe 15. The light is diffused by a milky white glove and can be illuminated with light distribution characteristics similar to those of a mini-krypton bulb.

  In particular, when the light distribution of a small light bulb-shaped lighting device 10 serving as a light source approaches the light distribution of a mini-krypton light bulb, the amount of light applied to the reflector 22 near the socket 23 disposed in the lighting fixture 20 is reduced. As a result, it is possible to obtain substantially the same instrument characteristics as the optical design of the reflector 22 configured for a mini-krypton bulb.

  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 disk-shaped circuit board 11a made of aluminum to the support portion 12f to which the circuit board 11a is closely attached and fixed, and is radiated from the main body 12 made of aluminum to the outside air through the radiation fins 12d. Thereby, the temperature rise and temperature unevenness of each LED 11 are prevented, the decrease in light emission efficiency is suppressed, the decrease in illuminance due to the decrease in luminous flux can be prevented, and at the same time, the life of the LED can be extended.

 With these actions and the action of the light-emitting diode without disconnection, the light bulb-type lighting device 10 using the light-emitting diode 11 as a light source can achieve a life of about 40,000 hours, more than about four years. It is used by being mounted on instruments. However, at the end of the life, the adhesive 14 such as silicone resin deteriorates due to long-term use, and the bonded part is peeled off. For example, the glove is detached from the main body or the glove and the main body are separated from the insulating case by some impact. There is a risk of falling. Further, when the globe 15 is removed from the socket 23 of the lighting fixture 20 in order to replace the bulb-shaped lighting device 10 when it reaches the end of its life, when the globe 15 is gripped and rotated, the deteriorated adhesive 14 peels off and only the globe 15 is removed. May be removed, and there is a possibility that the holding allowance will be lost and the socket member 17 including the base member 17 cannot be removed.

  The present invention can cope with these assumed situations as follows. That is, the globe 15 and the main body 12 are engaged with each other by the protrusion 13a2 on the globe 15 side being fitted into the engagement groove 13a1 on the main body 12 side by the fall prevention means 13a of the engagement mechanism 13. Thereby, it is comprised in the state engaged with respect to the central-axis yy direction of the main body 12, and when attaching the illuminating device 10 downward to a lighting fixture, it is with respect to the up-down direction, ie, the fall direction of the glove | globe 15. Since they are engaged, the adhesive 14 is deteriorated, the adhesive strength is weakened, and the globe 15 does not fall even if it is peeled off.

  Further, the globe 15 and the main body 12 are engaged with and engaged with the notch 13b1 on the main body 12 side and the convex portion 13b2 on the glove 15 side by the rotation preventing means 13b, so that the rotation by the width dimension a of the notch 13b1 is allowed. Therefore, the left and right rotations are prevented (blocked), and the globe 15, the main body 12, and the base member 17 can be integrally rotated toward the left and right around the central axis y of the main body 12. . As a result, even when the adhesive 14 is deteriorated and the adhesive strength is weakened and is peeled off, even when the lighting device 10 is removed from the socket 23 of the fixture, only the glove is idle even if the glove 15 is grasped and rotated. The main body 12 and the base member 17 can be rotated together and removed.

  Also, the insulating case 18 and the main body 12 are engaged with a protrusion 13a2 formed on the insulating case side by being fitted into the engaging groove 13a1 of the housing recess 12c on the main body 12 side. Since it is configured in an engaged state with respect to the y-y direction, when the lighting device 10 is mounted downward on the instrument, it is engaged with the vertical direction, that is, the falling direction of the globe 15 and the main body 12. Even when the adhesive 14 is deteriorated and the adhesive strength is weakened and peeled off, the globe 15 and the main body 12 can be prevented from dropping.

  Although the insulation case 18 is not provided with the rotation preventing means 13b, the fall preventing means and the rotation preventing means are configured by a separate engagement mechanism 13c shown in FIG. 4C, that is, a single engagement mechanism. You may make it do. The engagement mechanism 13c is formed with an L-shaped engagement groove 13a1 in a part of the inner peripheral surface in place of the engagement groove 13a1 of the storage recess 12c on the main body side. The L-shaped vertical groove of the engagement groove 13a1 is formed so as to reach the cylindrical end edge of the storage recess 12c. As a result, the protrusion 13a2 of the insulating case 18 is inserted from the engagement groove 13a1 at the cylindrical end edge (arrow c in FIG. 4C) and rotated in a state where it abuts against the L-shaped horizontal portion (FIG. 4 ( c) arrow d). In this state, the protrusion 13a2 and the L-shaped horizontal groove are engaged in the vertical direction, and at the same time, rotation is allowed and prevented only within the range of the L-shaped horizontal groove. Note that the engagement mechanism 13 c shown in FIG. 4C may be applied to the engagement mechanism 13 between the globe 15 and the main body 12.

  As described above, according to the present embodiment, since the globe 15 and the main body 12 are coupled by the fall prevention means 13a and the rotation prevention means 13b of the engagement mechanism 13, the illumination device 10 using the light emitting diode 11 having a long life as a light source. , The glove 15 coupled to the main body 12 is securely coupled at the end of the life, and even when the adhesive 14 is deteriorated, the glove 15 can be surely prevented from falling, and a safe lighting device and lighting fixture are provided. can do. Further, even when the globe 15 is grasped and rotated, the main body 12 and the base member 17 can be rotated together without causing only the globe to rotate freely, and the lighting device 10 can be reliably removed from the socket 23 of the lighting fixture even at the end of the lifetime. it can.

  Further, since the insulating case 18 and the main body 12 are also coupled by the fall preventing means 13a and the rotation preventing means 13b of the engaging mechanism 13, the insulating case 18 coupled to the main body 12 is securely coupled at the end of the life, and the adhesive Even when 14 deteriorates, the globe 15 and the main body 12 can be reliably prevented from falling, and a safe lighting device and lighting fixture can be provided. Further, even if the glove 15 or the main body 12 is grasped and rotated, the main body 12 and the base member 17 can be rotated together without causing only the glove and the main body to idle, and the lighting device 10 can be removed from the socket 23 of the lighting fixture even at the end of the lifetime. It can be removed reliably.

  Further, in the engagement mechanism 13, one engagement means is formed with an engagement groove 13a1 formed along at least a part of the cylindrical inner peripheral surface of the body 12 made of aluminum, and a notch 13b1 is formed in the cylindrical edge 12k. Therefore, it can be easily and reliably formed by cutting aluminum. Further, the mating engagement means is formed by forming the protrusions 13a2 and the protrusions 13b2 on the cylindrical outer peripheral surface of the synthetic resin globe 15 and the insulating case 18, so that it can be easily and reliably formed by resin molding. It is possible to reliably connect the glove 15 and the insulating case 18 that are coupled to the main body at the end of the lifetime, simplify the processing work, and at the same time, enable mass production and provide a cost-effective lighting device. be able to.

  Incidentally, the process of forming protrusions or projections, which are mating engagement means, on the cylindrical inner peripheral surface of the main body made of aluminum is an extremely difficult task to perform by cutting, and is temporarily formed by casting or forging. However, it is difficult to mold, and even if configured, there is a risk that the accuracy will deteriorate and engagement will not be ensured. Further, when the globe 15 is made of glass instead of synthetic resin, it is difficult to accurately form a small protrusion 13a2 particularly on the outer peripheral surface of the cylinder, and there is a possibility that the accuracy will deteriorate and it will not be reliably engaged.

  Further, although the insulating case 18 is fixed to the housing recess 12c of the main body 12 with the adhesive 14, it may be coupled only by the engagement mechanism 13 without using the adhesive. Further, although the engagement mechanism 13 is formed on the globe 15 and the insulating case 18, the engagement mechanism may be provided on only one of them. Further, the engagement mechanism 13 may be applied to the connection between the base member 17 and the insulating case 18.

  Since the adhesive needs to withstand various conditions, an adhesive made of a silicone resin or an epoxy resin having weather resistance such as heat resistance, light resistance, moisture resistance, and electrical insulation is preferable. The adhesive may satisfy some conditions. The insulating case 18 is configured to have a function of achieving electrical insulation between the lighting device 16 and the main body 12. However, the insulating case 18 does not house the lighting device 16 and exclusively performs electrical insulation between the main body 12 and the base member 17. There may be. As described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist of the present invention.

Shows a lighting device according to an embodiment of the present invention, (a) is a perspective view showing a longitudinal lighting equipment, (b) is an enlarged sectional view showing a portion E of (a), (c) is ( Sectional drawing which expands and shows F part of a), (d) is sectional drawing which expands and shows the rotation prevention means of (a). The longitudinal cross-sectional view which similarly shows an illuminating device. Also shows the engagement mechanism of the lighting device, (a) is a perspective view showing a drop prevention means and the rotation prevention means of the body side, (b) is a perspective view showing a drop prevention means and anti-rotation means of the glove side, ( (c) is a perspective view showing the rotation prevention means on the main body side, (d) is a perspective view showing the rotation prevention means on the glove side. Similarly, it is a figure for demonstrating operation | movement of the engagement mechanism of an illuminating device, (a) is a front view which shows a fall prevention means, (b) is a top view which shows a rotation prevention means, (c) is another engagement mechanism. FIG. Explanatory drawing which shows schematically the state which installed the lighting fixture which similarly mounted the illuminating device on the ceiling surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Semiconductor light-emitting device 12 Main body 13a Fall prevention means 13a1 Engagement groove 13a2 Engagement means 13b Anti-rotation means 13b1 Notch 13b2 Engagement means
14 Adhesive 15 Coupling member (cover member)
16 lighting device 17 base member 18 coupling member (insulating case)
20 Lighting fixture 21 Appliance body 23 Socket

Claims (2)

A semiconductor light emitting device;
A cylindrical metal body at one end were provided with the semiconductor light emitting element;
Configured openings having a cylindrical shape on one end of a synthetic resin formed integrally, and the translucent cover member provided to cover the semiconductor light emitting element to the body;
A lighting device for lighting the semiconductor light emitting element;
Comprising a; and the cap member provided on the other end side of the body
The main body is provided with a notch at an edge on one end side, an engagement groove is formed along at least a part of the inner peripheral surface on the one end side, and the cover member is engaged with the main body. The engagement means includes a drop prevention means constituted by a protrusion formed on a cylindrical outer peripheral surface of the opening so as to engage with the engagement groove of the main body, and the main body of the main body. An anti-rotation means configured by a convex portion formed on the cylindrical outer peripheral surface of the opening to be engaged with the notch is provided, and the main body and the cover member further include the protrusion in the engagement groove, An illuminating device , wherein the projection is engaged with the notch and fixed with an adhesive . An instrument body provided with a socket;
The lighting device according to claim 1 attached to a socket of the appliance body;
The lighting fixture characterized by comprising.

Images