JP7038291B2 - Lighting equipment - Google Patents

Description

The present invention relates to a lighting device having a light emitting element such as a light emitting diode (LED: Light Emitting Diode).

Semiconductor light emitting devices such as LEDs are used as light sources for various products because of their small size, high efficiency, and long life. For example, a lighting device (LED lighting) using an LED as a light source has been put into practical use.

As LED lighting, bulb-shaped LED lamps (LED bulbs) that replace conventional bulb-shaped fluorescent lamps and incandescent bulbs, or straight-tube LED lamps that replace straight-tube fluorescent lamps are known. Has been done. In addition, as LED lighting, lighting fixtures such as ceiling lights, downlights, and spotlights are also known.

For example, in a conventional LED bulb, a light emitting module composed of a substrate and an LED element mounted on the substrate, a glove covering the light emitting module, a base for receiving AC power, and an AC power received by the base are used to emit light from the LED element. A circuit unit for generating DC power for the purpose and an outer housing for accommodating the circuit unit are provided (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-076281

However, in the conventional lighting device, it is difficult to standardize and share parts, and it is not possible to easily change the design.

An object of the present invention is to provide a lighting device capable of easily changing a design by standardizing and sharing parts and preventing the glove from falling.

In order to achieve the above object, one aspect of the lighting device according to the present invention includes a light emitting module and a glove covering the light emitting module, and the light emitting module has a first surface and the first surface. It has a substrate having a second surface on the opposite side and a light emitting element arranged on the first surface of the substrate, and a position on the inner surface of the glove facing the second surface of the substrate. A protruding portion is provided so as to project to.

According to the present invention, since the parts can be shared and shared, the design can be easily changed and the glove can be prevented from falling.

It is external perspective view of the LED bulb which concerns on embodiment. It is an exploded perspective view of the LED bulb which concerns on embodiment. It is sectional drawing of the LED bulb which concerns on embodiment. It is a perspective view which shows the state which the glove of the LED bulb which concerns on embodiment is removed. It is a half-section perspective view when the glove used for the LED light bulb which concerns on embodiment is seen from diagonally above. It is a half-section perspective view when the glove used for the LED light bulb which concerns on embodiment is seen from diagonally below. It is a partial cross-sectional view when the LED bulb which concerns on embodiment is cut in the plane passing through the protrusion of a glove. It is a figure for demonstrating the attachment method of the glove in the LED bulb which concerns on embodiment. It is sectional drawing of the LED bulb which concerns on modification 1. FIG. It is a figure for demonstrating the attachment method of the glove in the LED bulb which concerns on modification 2. FIG.

Hereinafter, embodiments of the present invention will be described. In addition, all of the embodiments described below show a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components, and the steps and the order of the steps shown in the following embodiments are examples and are intended to limit the present invention. do not have. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components.

Further, each figure is a schematic view and is not necessarily exactly illustrated. In each figure, the same reference numerals are given to the configurations having substantially the same functions, and duplicate description will be omitted or simplified.

In the following embodiment, as an example of the lighting device, an LED bulb which is an alternative to a compact fluorescent light bulb or an incandescent light bulb will be described.

(Embodiment)
[LED bulb]
The overall configuration of the LED bulb 1 according to the embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is an external perspective view of the LED bulb 1 according to the embodiment. FIG. 2 is an exploded perspective view of the LED bulb 1. FIG. 3 is a cross-sectional view of the LED bulb 1. FIG. 4 is a perspective view showing a state in which the glove 20 of the LED bulb 1 is removed.

As shown in FIGS. 1 to 4, the LED bulb 1 includes an LED module 10, a glove 20 that covers the LED module 10, a circuit unit 30 that generates power for causing the LED module 10 to emit light, and a circuit unit 30. It includes an outer housing 40 for storing and a base 50. As shown in FIG. 1, the LED bulb 1 has an outer enclosure composed of a glove 20, an outer housing 40, and a base 50.

Hereinafter, each component constituting the LED bulb 1 will be described with reference to FIGS. 1 to 4.

[LED module]
The LED module 10 is an example of a light emitting module that emits light of a predetermined color, and emits, for example, white light. The LED module 10 emits light by the electric power supplied from the circuit unit 30.

In the present embodiment, the LED module 10 is fixed to the outer housing 40. Specifically, the LED module 10 is fixed to the outer housing 40 so as to cover the first opening 40a of the outer housing 40.

As shown in FIGS. 2 to 4, the LED module 10 has a substrate 11 and a light emitting element 12 arranged on the substrate 11.

The substrate 11 is a mounting substrate for mounting the light emitting element 12, and as shown in FIG. 3, the first surface (front surface) 11a on which the light emitting element 12 is mounted and the opposite side to the first surface 11a. It has a second surface (back surface) 11b of the above. That is, the second surface 11b is a surface facing the first surface 11a. The substrate 11 is, for example, a plate-shaped substrate having a substantially circular shape as a whole in a plan view, but the shape of the substrate 11 is not limited to this, and may be a polygon such as a rectangular shape. The thickness of the substrate 11 is, for example, 0.5 mm to 5 mm, but is not particularly limited.

As shown in FIGS. 2 and 4, a protrusion 11c is provided at the end of the substrate 11. The protruding portion 11c is formed so as to project outward from the end portion of the substrate 11 in the plan view of the substrate 11. The protrusion 11c is a part of the substrate 11 and has a first surface 11a and a second surface 11b. Although the details will be described later, the protrusion 11c faces the protrusion 21 provided on the inner surface of the glove 20. Specifically, the second surface 11b of the protrusion 11c faces the protrusion 21 of the glove 20. The plan view shape of the protrusion 11c is, for example, a rectangular shape, but the shape is not limited to this. As the shape of the protrusion 11c, any shape can be adopted as long as at least a part thereof faces the protrusion 21 of the glove 20.

In the present embodiment, a plurality of protrusions 11c are provided. Specifically, the substrate 11 is provided with two protrusions 11c. The two protrusions 11c are provided at opposite positions. That is, the two protrusions 11c are provided at an interval of about 180 °. A triangular mark is attached around the protrusion 11c so that the protrusion 11c can be easily visually recognized.

As shown in FIG. 3, the substrate 11 is fixed to the outer housing 40 in a state where the second surface 11b is in contact with the outer housing 40. Specifically, as shown in FIGS. 2 and 3, a mounting portion 41 is provided in the vicinity of the first opening 40a of the outer housing 40, and the substrate 11 is the first of the outer housing 40. It is mounted on the mounting portion 41 so as to cover the opening 40a. That is, the substrate 11 is supported by the mounting portion 41 of the outer housing 40.

Further, the substrate 11 is provided with a through hole 11d. A screw 60 for fixing the substrate 11 and the outer housing 40 is inserted into the through hole 11d. In the present embodiment, since the substrate 11 and the outer housing 40 are fixed by the three screws 60, the substrate 11 is provided with three through holes 11d.

The substrate 11 is, for example, a metal base substrate obtained by applying an insulating film to a base material made of a metal material such as aluminum or copper, a ceramic substrate which is a sintered body of a ceramic material such as alumina, or a resin material. A resin substrate or the like is used. From the viewpoint of dissipating heat generated by the light emitting element 12, it is preferable to use a metal base substrate having the highest thermal conductivity among these. Although the substrate 11 is a rigid substrate, it may be a flexible substrate.

Further, as shown in FIGS. 2 and 3, a connector 13 is provided as a feeding portion in the central portion of the first surface 11a of the substrate 11. The connector 13 has a pair of conductive members 13a and an insulating member 13b that holds the pair of conductive members 13a. A part of the insulating member 13b of the connector 13 penetrates the substrate 11, and the connector pin 33a derived from the circuit unit 30 is inserted into the insulating member 13b so that the connector pin 33a and the conductive member 13a are connected to each other. Be connected. Although not shown, metal wiring (not shown) for electrically connecting the conductive member 13a of the connector 13 and the light emitting element 12 is formed on the first surface 11a of the substrate 11.

The light emitting element 12 is arranged on the first surface 11a of the substrate 11. In the present embodiment, the plurality of light emitting elements 12 are mounted on the substrate 11 so as to form an annular arrangement. In the present embodiment, six light emitting elements 12 are mounted, but the number of light emitting elements 12 mounted is not limited to this, and may be one.

The light emitting element 12 in the present embodiment is an individually packaged surface mount (SMD: Surface Mount Device) type LED element, and as shown in FIG. 4, the container (package) 12a and the inside of the container 12a. It has a primary mounted LED chip 12b and a sealing member 12c for sealing the LED chip 12b. The light emitting element 12, which is an SMD type LED element, is secondarily mounted on the substrate 11.

The container 12a is a resin molded product made of white resin or a white ceramic molded product, and has an inverted truncated cone-shaped recess (cavity). The inner surface of the recess is inclined and is configured to reflect the light from the LED chip 12b upward.

The LED chip 12b is mounted on the bottom surface of the recess of the container 12a. The LED chip 12b is an example of a semiconductor light emitting device that emits light by a predetermined DC power, and is a bare chip that emits visible light of a single color. The LED chip 12b is, for example, a blue LED chip that emits blue light when energized.

The sealing member 12c is a translucent insulating resin material such as a silicone resin. The sealing member 12c in the present embodiment includes a phosphor as a wavelength conversion material that converts the wavelength of light from the LED chip 12b. That is, the sealing member 12c is a phosphor-containing resin in which a phosphor is contained in a translucent resin, and the light from the LED chip 12b is wavelength-converted (color-converted) to a predetermined wavelength. The sealing member 12c is filled in the concave portion of the container 12a.

The sealing member 12c contains, for example, a phosphor in which YAG (yttrium aluminum garnet) -based yellow phosphor particles are dispersed in a silicone resin in order to obtain white light when the LED chip 12b is a blue LED chip. Resin can be used. As a result, the yellow phosphor particles are excited by the blue light of the blue LED chip and emit yellow light. Therefore, the yellow light from the yellow phosphor particles and the blue light from the blue LED chip are emitted from the sealing member 12c. White light is emitted as synthetic light. A light diffusing material such as silica and a filler may be dispersed in the sealing member 12c.

The plurality of light emitting elements 12 configured in this way are connected in series, for example, and emit light by the DC power supplied from the circuit unit 30 via the connector 13. The mode of connection of the plurality of light emitting elements 12 (series connection, parallel connection, connection of a combination of series connection and parallel connection, etc.) is not particularly limited.

[Glove]
As shown in FIGS. 2 to 4, the glove 20 is an example of a translucent cover that covers the LED module 10. The glove 20 is a hollow member having an opening 20a, and has a substantially hemispherical shape in which the apex opposite to the opening 20a is closed. The shape of the glove 20 is not limited to a substantially hemispherical shape, but may be a semi-elliptical shape or the like, and has the same shape as a general compact fluorescent light bulb or an incandescent light bulb (specified in JIS C7710). , A type, G type, E type, etc.).

The glove 20 is configured to take out the light emitted from the LED module 10 (light emitting element 12) to the outside of the lamp. That is, the light of the LED module 10 incident on the inner surface of the glove 20 is transmitted through the glove 20 and taken out to the outside of the glove 20.

As the material of the glove 20, a translucent material made of a resin material such as polycarbonate or acrylic or a glass material such as silica glass can be used.

Further, the glove 20 may be a diffusion cover having light diffusivity (light scattering property). For example, the glove 20 can be made to have light diffusivity by producing the glove 20 by dispersing a light diffusing material such as light-reflecting fine particles in a light-transmitting resin material. By providing the glove 20 with light diffusivity, the light incident on the glove 20 from the LED module 10 can be diffused, so that the light distribution angle can be widened. Further, since the light of the LED has a strong directivity, when the LED is used as the light source of the light emitting element 12, a crushing feeling (luminance unevenness) is generated by the plurality of light emitting elements 12, but the glove 20 is provided with light diffusivity. This makes it possible to suppress the crushing feeling caused by the plurality of light emitting elements 12.

When the glove 20 is provided with light diffusivity, it is not limited to the configuration in which the light diffusing material is dispersed inside the translucent member. For example, a milky white light diffusing film containing a light diffusing material or the like is formed on the surface (inner surface or outer surface) of the glove 20, or minute irregularities are formed on the surface of the glove 20 by embossing treatment or the like instead of using the light diffusing material. The glove 20 may be made to have light diffusivity by printing a dot pattern on the surface of the glove 20.

In the present embodiment, the glove 20 is a milky white diffusion cover formed by injection molding using a translucent resin material in which a light diffusing material is dispersed. The glove 20 may be transparent so that the internal LED module 10 can be visually recognized without the glove 20 having a light diffusion function.

As shown in FIG. 3, in the present embodiment, the glove 20 is configured to cover the entire LED module 10. That is, the glove 20 covers the substrate 11 and the light emitting element 12. Specifically, the glove 20 is configured to surround the entire side surface of the substrate 11, and the open end portion 20b of the glove 20 exists at a position beyond the substrate 11.

Here, the specific shape of the glove 20 will be described with reference to FIGS. 5A, 5B, and 6 with reference to FIG. 5A and 5B are perspective views showing a half cross section of the glove 20 used in the LED bulb 1 according to the embodiment. FIG. 5A shows a state when the glove 20 is viewed from diagonally above, and FIG. 5B shows a state when the glove 20 is viewed from diagonally below. FIG. 6 is a partial cross-sectional view of the LED bulb 1 cut along a plane passing through the protrusion 21 of the glove 20. In FIG. 5A, the configuration around the protrusion 11c of the substrate 11 is shown by a broken line. Further, in FIG. 6, the circuit unit 30 is omitted.

As shown in FIGS. 5A and 5B, the inner surface of the glove 20 is provided with a protruding portion 21 projecting to a position facing the second surface 11b of the substrate 11 of the LED module 10. As shown in FIGS. 5A and 6, the protrusion 21 faces the protrusion 11c provided on the substrate 11. Specifically, the protrusion 21 has a plane facing the second surface 11b of the protrusion 11c.

A plurality of protrusions 21 are provided. Specifically, the same number of protrusions 21 as the protrusions 11c of the substrate 11 are provided, and in the present embodiment, as shown in FIG. 4, two protrusions 21 are provided on the inner surface of the glove 20. There is. The two protrusions 21 are provided at opposite positions. That is, the two protrusions 21 are provided at intervals of about 180 °.

As shown in FIGS. 5A and 5B, each protrusion 21 extends along the circumferential direction of the glove 20 and is formed in a ridge on the inner surface of the glove 20. Specifically, the protrusion 21 extends along the circumferential direction of the opening 20a along the opening end 20b of the opening 20a of the glove 20. Further, the end surface of the protrusion 21 on the substrate 11 side and the end surface of the open end portion 20b of the glove 20 are flush with each other. The length of the protruding portion 21 in the extending direction is, for example, 5 mm to 10 mm, but is not limited to this. Further, the length of the protruding portion 21 in the extending direction should be longer than the width of the protruding portion 11c of the substrate 11. As an example, the cross-sectional shape of the protruding portion 21 whose normal is the extending direction of the protruding portion 21 is rectangular, but is not limited to this.

As shown in FIGS. 5A and 5B, a first wall portion 22 and a second wall portion 23 are further provided on the inner surface of the glove 20. The first wall portion 22 and the second wall portion 23 extend along the inner surface of the glove 20 in a direction away from the opening end portion 20b of the glove 20. Specifically, it extends linearly from the end surface of the open end 20b of the glove 20 toward the top of the glove 20.

The first wall portion 22 and the second wall portion 23 are formed in a ridge on the inner surface of the glove 20, similarly to the protruding portion 21. The amount of protrusion (height) of the first wall portion 22 and the second wall portion 23 from the inner surface of the glove 20 is the same as the amount of protrusion (height) of the protrusion 21 from the inner surface of the glove 20. Not limited to. The protrusion amount (height) of the protrusion 21, the first wall portion 22, and the second wall portion 23 is, for example, 1 mm to 5 mm, but is not limited to this.

As shown in FIG. 5A, the first wall portion 22 is located on the side of the protrusion 11c of the substrate 11 of the LED module 10, and is one end of the protrusion 21 of the glove 20 in the extending direction. It is provided in the vicinity. In the present embodiment, the projecting portion 21 and the first wall portion 22 are continuously formed along the inner surface of the glove 20. Specifically, the projecting portion 21 and the first wall portion 22 are integrally formed by the projecting portion 21 and the first wall portion 22 so that the side view shape is L-shaped. Therefore, the cross-sectional shapes of the protruding portion 21 and the first wall portion 22 are the same.

The second wall portion 23 is formed so as to have a gap G along the circumferential direction of the glove 20 with the protruding portion 21 of the glove 20. Specifically, the second wall portion 23 is formed so as to have a gap G between the protruding portion 21 and the other end portion in the extending direction. The gap G is equal to or larger than the width of the protrusion 11c so that the protrusion 11c of the substrate 11 can pass through. As described above, between the second wall portion 23 and the protruding portion 21, there is a gap G equal to or larger than the width of the protruding portion 11c along the circumferential direction of the glove 20.

Although the details will be described later, the glove 20 configured in this way is combined with the LED module 10 and fixed to the outer housing 40. In this embodiment, the glove 20 is combined with the substrate 11 by horizontally rotating the glove 20. At this time, as shown in FIGS. 1, 2 and 4, a convex portion 24 is provided on the outer surface of the glove 20 so that it can be visually confirmed that the glove 20 is rotating correctly. That is, it is possible to confirm whether the glove 20 is correctly combined with the LED module 10 by using the convex portion 24 provided on the outer surface of the glove 20. Specifically, as shown in FIG. 1, in a state where the glove 20 is combined with the LED module 10, the convex portion 24 of the glove 20 is provided at a position corresponding to the mark portion 43 provided on the outer housing 40. Has been done. As an example, the convex portion 24 is formed in a ridge so as to extend along the outer surface of the glove 20 in a direction away from the open end 20b of the glove 20.

[Circuit unit]
The circuit unit 30 shown in FIGS. 2 and 3 is a drive circuit for causing the LED module 10 (light emitting element 12) to emit light. That is, the circuit unit 30 supplies the LED module 10 with electric power for causing the LED module 10 to emit light. In the present embodiment, the circuit unit 30 is a lighting circuit for turning on and off the LED module 10, and constitutes a power supply unit (power supply circuit). For example, the circuit unit 30 converts the AC power supplied from the base 50 into DC power, and supplies the DC power to the LED module 10. The LED module 10 (light emitting element 12) is turned on or off by the DC power supplied from the circuit unit 30 (lighting circuit).

The circuit unit 30 has a circuit board 31 and a plurality of electronic components 32 mounted on the circuit board 31. The circuit unit 30 is arranged between the LED module 10 and the base 50. Specifically, the circuit unit 30 is housed in the outer housing 40. The circuit unit 30 is held in the outer housing 40 by locking the circuit board 31 to a locking portion provided on the inner surface of the outer housing 40. The fixing means of the circuit board 31 is not limited to this, and the circuit board 31 may be fixed to the outer housing 40 with screws or the like.

The circuit board 31 is a printed circuit board (PCB) in which metal wiring such as copper foil is formed on one surface (solder surface). The plurality of electronic components 32 mounted on the circuit board 31 are electrically connected to each other by metal wiring formed on the circuit board 31.

The circuit board 31 is provided with an output terminal 33 and an input terminal (not shown). The output terminal 33 is provided with a connector pin 33a. The connector pin 33a is mechanically and electrically connected to the conductive member 13a of the connector 13 provided on the substrate 11 of the LED module 10. On the other hand, a pair of lead wires (not shown) are connected to the input terminal. The other end of the pair of lead wires connected to the input terminal is connected to the base 50.

The circuit board 31 is arranged, for example, in a posture (vertically placed) substantially parallel to the cylinder axis of the outer housing 40. The circuit board 31 is not limited to the vertical arrangement, and the circuit board 31 may be arranged in a posture (horizontal arrangement) in which the main surface of the circuit board 31 is substantially orthogonal to the cylinder axis of the outer housing 40. Further, the metal wiring formed on the circuit board 31 is not formed on only one surface (one side) of the circuit board 31, but may be formed on both sides of the circuit board 31. That is, the circuit board 31 may be a double-sided wiring board.

The electronic component 32 mounted on the circuit board 31 is a plurality of circuit elements for lighting the LED module 10. For example, a capacitive element such as an electrolytic capacitor or a ceramic capacitor, a resistance element such as a resistor, a rectifying circuit element, and the like. It is a semiconductor element such as a coil element, a choke coil (choke transformer), a noise filter, a diode, or an integrated circuit element.

The circuit unit 30 configured in this way is housed in an outer housing 40 made of an insulating resin material to ensure insulation. In order to control the light emitting state of the LED module 10, the circuit unit 30 may be combined with an optical control circuit such as a dimming circuit or a toning circuit, or a wireless communication circuit.

[Outer housing]
As shown in FIGS. 2 and 3, the outer housing 40 is a tubular body having a first opening 40a provided on the glove 20 side and a second opening 40b provided on the base 50 side. be. The outer diameter of the first opening 40a is larger than the outer diameter of the second opening 40b, and the tubular body constituting the outer housing 40 has a substantially cylindrical shape in which the outer diameter gradually changes. The outer housing 40 constitutes the outer member of the LED bulb 1, and the outer surface of the outer housing 40 is exposed to the outside (in the atmosphere). The outer housing 40 is arranged between the glove 20 and the base 50.

In the present embodiment, the outer housing 40 also functions as a support member for supporting the LED module 10. The LED module 10 is fixed to the outer housing 40 and supported by the outer housing 40.

Specifically, as shown in FIGS. 2 to 4, a mounting portion 41 having a mounting surface 41a for mounting the substrate 11 of the LED module 10 in the first opening 40a of the outer housing 40. Is provided. The second surface 11b of the substrate 11 is in surface contact with the mounting surface 41a.

The mounting portion 41 of the outer housing 40 is provided with a screw hole 41b extending in the tubular axial direction of the outer housing 40. The substrate 11 and the outer housing 40 are fixed by screwing a screw 60 inserted into the through hole 11d of the substrate 11 into the screw hole 41b. The screw 60 is, for example, a metal machine screw.

Further, in the first opening 40a of the outer housing 40, an annular groove 42 is formed on the outer side of the mounting portion 41. The open end 20b of the glove 20 is inserted into the groove 42. As shown in FIG. 3, the glove 20 and the outer housing 40 are fixed to each other by the adhesive 70 filled in the groove 42. As the adhesive 70 to be filled in the groove portion 42, for example, an adhesive made of a silicone resin is used.

The outer housing 40 is provided with a mark 43. The mark portion 43 is provided at a position corresponding to the convex portion 24 provided on the outer surface of the glove 20, and functions as a positioning portion when the glove 20 and the LED module 10 (board 11) are combined. In the present embodiment, the mark portion 43 is a notch portion provided at the opening end portion on the first opening portion 40a side of the outer housing 40, and is formed at a position visible from the outside. The mark portion 43 may be formed, for example, by performing laser printing after molding the outer housing 43, or may be formed when the outer housing 43 is injection-molded. The mark portion 43 has a horizontally long slit shape, and in the present embodiment, the width of the mark portion 43 is wider than the width of the convex portion 24 of the glove 20.

A screw portion for mounting the base 50 is formed on the outer surface of the second opening 40b. A base 50 is screwed into the second opening 40b.

The outer housing 40 is thermally coupled to the LED module 10 at the first opening 40a. That is, the outer housing 40 also functions as a heat radiating member (heat sink) that dissipates heat generated by the LED module 10. Therefore, in order to efficiently dissipate the heat generated by the LED module 10 (light emitting element 12), the outer housing 40 may be made of a material having high thermal conductivity such as a metal material or a high thermal conductive resin material. .. For example, the outer housing 40 may be made of a material having a higher thermal conductivity than the substrate 11. In the present embodiment, the outer housing 40 is made of resin and is made of an insulating resin material such as polybutylene terephthalate (PBT). Further, the outer housing 40 is an integrally molded product.

As shown in FIG. 3, the circuit unit 30 is arranged inside the outer housing 40. Therefore, the outer housing 40 can also dissipate the heat generated by the circuit unit 30. In the present embodiment, the outer housing 40 directly surrounds the circuit unit 30. That is, the outer housing 40 also functions as a circuit case (insulation case) that insulates and protects the circuit unit 30.

[Cap]
The base 50 shown in FIGS. 2 and 3 is a power receiving unit that receives electric power for causing the LED module 10 (light emitting element 12) to emit light from the outside of the lamp. The base 50 is attached to the outer housing 40.

On the inner peripheral surface of the base 50, a screwing portion for screwing into the screwing portion formed in the second opening 40b of the outer housing 40 is formed. The base 50 is externally fitted to the outer housing 40 by being screwed into the screwed portion of the second opening 40b.

The LED bulb 1 is attached to the fixture body by attaching the base 50 to the socket of the fixture body of the lighting fixture, for example. Specifically, a screw portion for screwing into the socket of the instrument main body is formed on the outer peripheral surface of the base 50. When the base 50 is attached to the socket of the device body, the base 50 is in a state where it can receive electric power from the device body. AC power is supplied to the base 50 from, for example, a commercial power source. The base 50 in the present embodiment receives AC power through two contacts, and the power received by the base 50 is input to the input terminal of the circuit unit 30 via a pair of lead wires.

The base 50 has, for example, a metal bottomed tubular shape, and as shown in FIG. 3, is attached to a shell portion 51 having an outer peripheral surface as a screwed portion and to the shell portion 51 via an insulating portion 52. It has an eyelet portion 53 that has been formed. The insulating portion 52 is composed of, for example, a glass cullet. One of the pair of lead wires connected to the circuit unit 30 is connected to the shell portion 51 of the base 50, and one is connected to the eyelet portion 53 of the base 50.

The type of the base 50 is not particularly limited, but in the present embodiment, a screw-in type Edison type (E type) base is used. For example, as the base 50, E26 type, E17 type, E16 type and the like can be mentioned. Further, the base 50 may be a swan type (plug-in type) instead of the Edison type.

[How to attach gloves]
Next, a method of attaching the glove 20 will be described with reference to FIGS. 3 and 4 with reference to FIG. 7. FIG. 7 is a diagram for explaining a method of attaching the glove 20 in the LED bulb 1 according to the embodiment. Note that FIG. 7 shows only the LED module 10 and the glove 20.

First, as shown in FIGS. 3 and 4, the circuit unit 30 is housed in the outer housing 40, and then the LED module 10 is fixed to the outer housing 40. Specifically, the board 11 is placed on the mounting surface 41a of the mounting portion 41 of the outer housing 40 by combining the through hole 11d of the board 11 of the LED module 10 and the screw hole 41b of the outer housing 40. The screw 60 is inserted into the through hole 11d of the substrate 11 and the screw 60 is screwed into the screw hole 41b of the outer housing 40. As a result, the substrate 11 is screwed to the outer housing 40, and the LED module 10 can be fixed to the outer housing 40.

Next, as shown in FIGS. 7A and 7B, the protrusion 11c of the substrate 11 is passed through the gap G between the protrusion 21 of the glove 20 and the second wall 23. Fit the glove 20 into 11. At this time, as shown in FIG. 3, the open end 20b of the glove 20 is inserted into the groove 42 of the outer housing 40.

Next, as shown in FIG. 7 (c), the glove 20 is horizontally rotated in a predetermined direction. Specifically, the glove 20 is rotated until the protruding portion 21 of the glove 20 moves to a position facing the protruding portion 11c of the substrate 11. In the present embodiment, the glove 20 is horizontally rotated in the clockwise direction.

At this time, since the glove 20 is provided with the first wall portion 22, when the glove 20 is rotated, the protrusion 11c of the substrate 11 comes into contact with the first wall portion 22. That is, the first wall portion 22 functions as a stopper for stopping the rotation of the glove 20 so that the glove 20 cannot rotate more than a certain amount. As described above, the glove 20 is configured so that the glove 20 can rotate only to a position where the first wall portion 22 abuts on the protrusion 11c of the substrate 11. Further, it can be seen that the protrusion 21 of the glove 20 has moved to a position facing the protrusion 11c of the substrate 11 by rotating the glove 20 so that the first wall portion 22 comes into contact with the protrusion 11c of the substrate 11. In the present embodiment, since the length of the protruding portion 21 in the extending direction is 5 mm to 10 mm, the maximum rotation amount (maximum rotation angle) of the glove 20 is set small, and the rotation amount of the glove 20 is set to be small. I'm holding back.

Further, in the present embodiment, since the glove 20 is provided with the second wall portion 23, when the glove 20 is to be rotated in a direction opposite to a predetermined direction, the second wall portion 23 becomes the substrate 11. It abuts on the protrusion 11c. That is, the second wall portion 23 functions as a stopper for preventing the glove 20 from rotating in the reverse direction, and the glove 20 is configured so as not to rotate in the reverse direction. In the present embodiment, the glove 20 cannot rotate in the counterclockwise direction.

Further, in the present embodiment, since the convex portion 24 is provided on the outer surface of the glove 20, it is possible to confirm whether or not the glove 20 is correctly rotated by the convex portion 24. Specifically, if the convex portion 24 of the glove 20 is located within the width W of the mark portion 43 of the outer housing 40, it can be determined that the glove 20 is rotated to the correct position.

As described above, in the LED bulb 1 in the present embodiment, the glove 20 is fixed by using the LED module 10. Specifically, the glove 20 is combined with the LED module 10 to determine the relative positional relationship with the LED module 10.

Although not shown, when the glove 20 is attached to the LED module 10, the adhesive 70 is applied to the groove 42 of the outer housing 40. As a result, the glove 20 can be fixed to the outer housing 40 by the adhesive 70.

[Effects, etc.]
Next, the characteristic configuration and the action and effect of the LED bulb 1 in the present embodiment will be described together with the background to the present invention.

In recent years, the external size of LED light bulbs has become smaller to the same size as incandescent light bulbs. For this reason, when developing new products or when arranging multiple types of lineups with different wattages, commonization and sharing of the outer housing is being considered, and by changing the design of only the LED module and gloves, LED bulbs There is a growing demand for product design.

On the other hand, if the glove comes off after the LED bulb is attached to a lighting fixture or the like, the glove may fall. In this case, even if the glove is fixed to the outer housing by the adhesive, the fixing force may be weakened due to deterioration of the adhesive or the like, and the glove may come off. Therefore, in order to prevent the glove from falling, it is considered to provide a glove fall prevention structure inside the LED bulb. In this case, it is conceivable to provide a glove fall prevention structure in the outer housing. However, if the outer housing is provided with a glove fall prevention structure, it becomes difficult to standardize and share parts.

Therefore, as a result of diligent studies by the present inventors, we have found a structure that can prevent the glove 20 from falling while trying to standardize and share parts by using the LED module 10 that covers the LED module 10.

Specifically, in the LED bulb 1 of the present embodiment, as shown in FIGS. 4 and 6, the inner surface of the glove 20 projects to a position facing the second surface 11b of the substrate 11 of the LED module 10. A protruding portion 21 is provided.

With this configuration, even if the glove 20 is temporarily removed after the LED bulb 1 is attached to a lighting fixture or the like, the protruding portion 21 of the glove 20 is caught on the substrate 11, so that the glove 20 can be prevented from falling. That is, the protruding portion 21 of the glove 20 is a hooking portion that is hooked on the substrate 11 and functions as a fall prevention structure for the glove 20.

Further, by realizing the fall prevention structure of the glove 20 by the LED module 10 and the glove 20, it is possible to easily standardize and share the parts constituting the LED bulb 1.

Specifically, in an LED bulb, optical characteristics such as light distribution characteristics are determined by the LED module 10 and the glove 20. Therefore, when designing a product for an LED bulb, it is only necessary to change the design of the LED module 10 and the glove 20, so that the shape and size of parts other than the LED module 10 and the glove 20 (outer housing 40, etc.), etc. It is not necessary to change the above, and parts such as the outer housing 40 can be shared and shared.

On the contrary, the LED module 10 and the glove 20, which are the main factors of the optical characteristics of the LED bulb, can be used as one module to standardize and share the parts. That is, by applying the LED module 10 and the glove 20 as one module to the outer housing 40 or the like having different shapes or sizes, a plurality of types of LED bulbs can be easily obtained.

For example, instead of directly fixing the LED module 10 to the outer housing 40 as described above, the cup-shaped heat sink 80 arranged in the outer housing 40A as in the LED bulb 1A shown in FIG. 8 The LED module 10 may be placed and fixed on the surface. In the LED bulb 1A shown in FIG. 8, the same LED module 10 and glove 20 as the LED bulb 1 in the above embodiment are used. That is, the LED module 10 and the glove 20 are shared and shared as one module. In FIG. 8, the circuit unit 30 is omitted.

As described above, according to the LED bulb 1 according to the present embodiment, since the parts can be shared and shared, the design can be easily changed and the glove 20 can be prevented from falling. can. Specifically, the fall prevention structure can be realized only by the LED module 10 and the glove 20. In addition, by standardizing and sharing parts, investment in new molds can be minimized.

Further, in the LED bulb 1 of the present embodiment, the glove 20 is configured to surround the entire side surface of the substrate 11, and the substrate 11 has a protrusion 11c facing the protrusion 21 of the glove 20. ing. Further, the protruding portion 21 of the glove 20 extends along the circumferential direction of the glove 20.

With this configuration, although the glove 20 surrounds the entire side surface of the substrate 11, the protrusion 11c of the substrate 11 and the protrusion 21 of the glove 20 can be easily opposed to each other by horizontally rotating the glove 20. can. That is, although the entire substrate 11 is covered with the glove 20, the glove 20 and the LED module 10 can easily realize a fall prevention structure for the glove 20.

Further, in the present embodiment, a plurality of protruding portions 21 of the glove 20 are provided.

With this configuration, since a plurality of fall prevention structures for the glove 20 can be provided on the LED bulb 1, it is possible to more reliably prevent the glove 20 from falling.

Further, in the present embodiment, as shown in FIG. 6, there is a gap between the protrusion 11c of the substrate 11 and the protrusion 21 of the glove 20, and the protrusion 11c of the substrate 11 and the protrusion 21 of the glove 20 have a gap. However, the protrusion 11c of the substrate 11 and the protrusion 21 of the glove 20 may be brought into contact with each other.

In this case, the glove 20 may be held on the substrate 11. That is, the glove 20 may be fixed to the substrate 11. For example, the glove 20 may be fixed to the substrate 11 by forming the protruding portion 21 of the glove 20 into a claw structure and engaging the protruding portion 21 with the protruding portion 11c of the substrate 11.

With this configuration, it is possible to suppress that the optical characteristics determined by the LED module 10 and the glove 20 vary from LED bulb to LED bulb. Therefore, it is possible to easily realize an LED bulb having the same optical characteristics even though the shape or size of the outer housing or the like is different and the outer shape or the like is different.

(Modification example)
The lighting device according to the present invention has been described above based on the embodiment, but the present invention is not limited to the above embodiment.

For example, in the above embodiment, the protruding portion 21 of the glove 20 is provided on the inner surface of the open end portion 20b of the glove 20, but the present invention is not limited to this. Specifically, as in the LED bulb 1B shown in FIG. 9, the protruding portion 21 of the glove 20B is provided on the inner surface of the arm portion 25 extending from the open end portion 20b of the glove 20B in the thickness direction of the substrate 11. May be. In this case, the glove 20B may be combined with the substrate 11 by horizontally rotating the glove 20 in the same manner as in the above embodiment, but as shown in FIG. 9, the glove 20B utilizes the elasticity of the arm portion 25. May be combined with the substrate 11 so as to be pushed toward the substrate 11, so that the end portion 11e of the substrate 11 and the protruding portion 21 of the glove 20B may face each other. In this modification as well, the glove 20B may be fixed to the substrate 11 by forming the protruding portion 21 of the glove 20B into a claw structure and locking the protruding portion 21 and the end portion of the substrate 11. This allows the glove 20B to be locked to the substrate 11 by snap-in. In this case, the end portion 11d of the substrate 11 may be formed in a protrusion shape as in the protrusion 11 in the above embodiment, but may not be formed in a protrusion shape. That is, a disk-shaped substrate 11 having no unevenness at the end may be used.

Further, in the above embodiment, the number of protruding portions 21 of the glove 20 is two, but the present invention is not limited to this. For example, the number of protrusions 21 may be only one or three or more. When a plurality of projecting portions 21 are provided, it is preferable that the plurality of projecting portions 21 are provided at equal intervals along the circumferential direction of the glove 20.

Further, in the above embodiment, in order to determine that the glove 20 is rotated to the correct position, a notch portion is provided in the outer housing 40 as a mark portion 43 corresponding to the convex portion 24 of the glove 20. Not limited to this. That is, the marking portion 43 for positioning the glove 20 is used as the notch portion, but the present invention is not limited to this. For example, the marking portion for positioning the glove 20 may be a convex portion provided on the outer housing 40, or a convex portion or a concave portion provided on a component of the LED bulb 1 other than the outer housing 40. There may be. Further, the marking portion for positioning the glove 20 is not limited to the structure and shape of the convex portion formed on the component of the LED bulb 1, and if it can be visually recognized when the glove 20 is attached, the LED bulb 20 can be visually recognized. It may be a pattern, a color, a seal, or the like attached to a component (outer housing 40, etc.) constituting 1. That is, it can be confirmed whether or not the glove 20 is rotating correctly depending on whether or not the convex portion 24 of the glove 20 is located within the range of the mark portion provided in a part of the LED bulb 1.

Further, in the above embodiment, the LED bulb is described as an example of the lighting device, but the present invention is a straight tube LED lamp that replaces the straight tube fluorescent lamp, or a flat type having a GX53 base, a GH76p base, or the like. It can also be applied to other LED lamps with a base such as LED lamps.

Further, in the above embodiment, as the lighting device, a lighting device with a base used by being attached to a lighting device has been described as an example, but any lighting device having an LED module and a glove (translucent cover) can be used. The lighting device according to the present invention can also be realized as a lighting fixture itself. Examples of such a lighting device include a lighting fixture such as a downlight, a spotlight, a ceiling light, or a stand light installed on a ceiling or the like.

Further, in the above embodiment, the light emitting element 12 is an SMD type LED element, but the present invention is not limited to this. For example, a COB (Chip On Board) type LED module in which a bare chip is directly mounted (primarily mounted) on a substrate may be used. That is, the LED chip itself may be adopted as the light emitting element 12. In this case, a plurality of LED chips may be collectively or individually sealed by the sealing member. As described above, the sealing member may contain a wavelength conversion material such as a yellow phosphor.

Further, in the above embodiment, the light emitting element 12 is a BY type white LED element that emits white light by the blue LED chip and the yellow phosphor, but the present invention is not limited to this. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with a blue LED chip to emit white light. Further, for the purpose of enhancing the color rendering property, a red fluorescent substance or a green fluorescent substance may be further mixed in addition to the yellow fluorescent substance. Further, an LED chip that emits a color other than blue may be used. For example, an ultraviolet LED chip that emits ultraviolet light having a shorter wavelength than the blue light emitted by the blue LED chip is used and is excited mainly by ultraviolet light. It may be configured to emit white light by a blue phosphor, a green phosphor and a red phosphor that emit blue light, red light and green light.

Further, in the above embodiment, the LED module 10 may be configured to be dimmable and / or tonal controllable. For example, the LED module 10 can perform RGB control by including a red LED light source that emits red light, a green LED light source that emits green light, and a blue LED light source that emits blue light. This makes it possible to realize an LED module capable of color matching control.

Further, in the above embodiment, the LED is exemplified as the light source of the light emitting element 12, but other solid light emitting elements such as a semiconductor light emitting element such as a semiconductor laser, an organic EL (Electroluminescence) or an inorganic EL may be used.

In addition, a form obtained by applying various modifications to the above-described embodiments and modifications that can be conceived by those skilled in the art, or components and functions in each of the above-described embodiments and modifications without departing from the spirit of the present invention. The present invention also includes a form realized by arbitrarily combining the above.

1,1A, 1B LED bulb (lighting device)
10 LED module (light emitting module)
11 Substrate 11a 1st surface 11b 2nd surface 11c Protrusion 12 Light emitting element 20, 20B Globe 20b Open end 21 Projection 22 1st wall 23 2nd wall 24 Convex 25 Arm 30 Circuit unit 40, 40A outer housing 43 mark part 50 base

Claims (11)

Light emitting module and
A glove covering the light emitting module is provided.
The light emitting module has a substrate having a first surface and a second surface opposite to the first surface, and a light emitting element arranged on the first surface of the substrate.
The inner surface of the glove is provided with a protrusion that protrudes to a position facing the second surface of the substrate .
The glove is configured to surround the entire side surface of the substrate.
The substrate has a protrusion facing the protrusion and has a protrusion.
The protrusion is formed so as to project outward from the end of the substrate.
Lighting equipment. The protrusion extends along the circumferential direction of the glove.
The lighting device according to claim 1 . A first wall portion is provided on the inner surface of the glove.
The first wall portion is located on the side of the protrusion and is provided near one end of the protrusion in the extending direction.
The lighting device according to claim 2 . The protrusion faces the protrusion of the substrate by rotating the glove, and the protrusion is opposed to the protrusion of the substrate.
The first wall portion is located in front of the protrusion with respect to the rotation direction of the glove.
The lighting device according to claim 3. A second wall portion is provided on the inner surface of the glove.
There is a gap equal to or larger than the width of the protrusion along the circumferential direction of the glove between the second wall portion and the protrusion.
The lighting device according to claim 3 or 4. A wall portion is provided on the inner surface of the glove.
The protrusion faces the protrusion by passing through a gap between the protrusion and the wall.
The lighting device according to claim 1. A plurality of the protrusions are provided.
The lighting device according to any one of claims 1 to 6 . The glove has an arm portion extending from the open end of the glove in the thickness direction of the substrate.
The protrusion is provided on the inner surface of the arm.
The lighting device according to claim 7 . The glove is held on the substrate,
The lighting device according to any one of claims 1 to 8 . A convex portion is provided on the outer peripheral surface of the glove, and a convex portion is provided.
The convex portion is located within the range of the mark portion provided in a part of the lighting device.
The lighting device according to any one of claims 1 to 9 . Moreover,
With the base
A circuit unit that generates electric power for causing the light emitting element to emit light by the electric power received by the base.
A housing for accommodating the circuit unit is provided.
The lighting device according to any one of claims 1 to 10 .

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