CN220817537U

CN220817537U - Lighting device and lighting fixture

Info

Publication number: CN220817537U
Application number: CN202322224670.9U
Authority: CN
Inventors: 矢野翔吾; 打保笃志; 松本雅人; 金泽有岐也
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2022-09-29
Filing date: 2023-08-17
Publication date: 2024-04-19
Anticipated expiration: 2033-08-17
Also published as: JP2024049680A

Abstract

Provided are a lighting device and a lighting fixture capable of improving the degree of freedom of the layout of a plurality of light sources included in one of a 1 st and a 2 nd light emitting units. An LED lamp (1) as an example of a lighting device is provided with: a 1 st light-emitting unit (10); a 2 nd light emitting unit (20); a base (30) having a placement surface that includes a 1 st region (31 a) in which the 1 st light-emitting unit is placed and a 2 nd region (31 b) in which the 2 nd light-emitting unit is placed; an optical member (40) having a 1 st light-transmitting portion (41) and a 2 nd light-transmitting portion (42); and a power supply unit (50) for supplying power to the 1 st and 2 nd light emitting units, wherein the optical member is configured such that the light distribution angle of the 1 st light emitting unit that transmits the 1 st light transmitting unit is smaller than the light distribution angle of the 2 nd light emitting unit that transmits the 2 nd light transmitting unit, and wherein, in a plan view, an insertion hole (61 a) into which a power line is inserted is present in the 1 st region, and the power line connects at least one of the 1 st and 2 nd light emitting units and the power supply unit.

Description

Lighting device and lighting fixture

Technical Field

The present utility model relates to a lighting device and a lighting fixture, and more particularly, to a lighting device as an example of an LED lamp using a light emitting Diode (LED: LIGHT EMITTING Diode) and a lighting fixture including the lighting device.

Background

Solid state light emitting devices such as LEDs are used as light sources for various products because they are small, high-efficiency, and long-life. For example, LED illumination using LEDs has been put to practical use.

As LED lighting, a capped LED lamp such as a bulb-type LED lamp (LED bulb) that replaces a conventionally known bulb-type fluorescent lamp or incandescent bulb, or a straight tube LED lamp that replaces a straight tube type fluorescent lamp is known. In addition, lighting fixtures such as ceiling lights, downlights, and spotlights are also known as LED lighting.

The LED lamp with the base is detachably mounted on a lamp holder of an appliance installed on a ceiling or the like. As such an LED lamp, a flat-type lighting device is known (for example, patent document 1).

The flat lighting device includes a lamp base of GX53 type or the like, and includes an LED module as a light emitting portion including a plurality of LEDs (light sources), a power source portion for lighting the LED module, a flat case accommodating the power source portion, a translucent cover as an optical member covering the LED module, and a pair of pins electrically connected to the power source portion.

Patent document 1: international publication No. 2012/005239

Disclosure of utility model

Lighting devices including two light emitting units, i.e., a 1 st light emitting unit and a 2 nd light emitting unit each having a plurality of light sources such as LEDs, have been studied. The lighting device comprises: a base provided with a 1 st light-emitting part and a 2 nd light-emitting part; a power supply unit for supplying power to the 1 st light emitting unit and the 2 nd light emitting unit; and an optical member covering the 1 st light-emitting portion and the 2 nd light-emitting portion and transmitting light from the 1 st light-emitting portion and the 2 nd light-emitting portion. In this case, the optical member is configured such that, for example, optical characteristics such as a light distribution angle are different between light transmitted by the light of the 1 st light emitting portion and light transmitted by the light of the 2 nd light emitting portion.

In such a lighting device, the 1 st light-emitting portion and the 2 nd light-emitting portion are disposed on one surface side of the base, and the power supply portion is disposed on the other surface side of the base. That is, the base is present between the 1 st light emitting section and the 2 nd light emitting section and the power supply section. Therefore, a through hole into which a power line is inserted is provided in the base, and the power line connects the 1 st light emitting unit and the 2 nd light emitting unit to the power supply unit.

However, if the through-holes are provided in the base where the 1 st light-emitting portion and the 2 nd light-emitting portion are arranged, restrictions are placed on the layout of the plurality of light sources included in the 1 st light-emitting portion and the 2 nd light-emitting portion. As a result, it is difficult to obtain desired optical characteristics for the light of each of the 1 st light-emitting portion and the 2 nd light-emitting portion of the transmission optical member.

The present utility model has been made in view of the above-described problems, and an object of the present utility model is to provide a lighting device and a lighting fixture capable of improving the degree of freedom in layout of a plurality of light sources included in one of a 1 st light emitting unit and a 2 nd light emitting unit even if a through hole through which a power line is inserted is provided in a base.

In order to achieve the above object, an illumination device according to the present utility model includes: a 1 st light emitting unit which emits 1 st light; a 2 nd light emitting unit for emitting 2 nd light; a base having a placement surface including a 1 st region in which the 1 st light-emitting unit is placed and a 2 nd region in which the 2 nd light-emitting unit is placed; an optical member that covers the 1 st light-emitting portion and the 2 nd light-emitting portion, and has a 1 st light-transmitting portion through which the 1 st light is transmitted and a 2 nd light-transmitting portion through which the 2 nd light is transmitted; and a power supply unit that is disposed on the opposite side of the placement surface side of the base and supplies electric power to the 1 st light emitting unit and the 2 nd light emitting unit, wherein the optical member is configured such that a light distribution angle of the 1 st light transmitted through the 1 st light transmitting unit is smaller than a light distribution angle of the 2 nd light transmitted through the 2 nd light transmitting unit, and an insertion hole through which an electric power line is inserted is present in the 1 st region of the placement surface in a plan view, and the electric power line connects at least one of the 1 st light emitting unit and the 2 nd light emitting unit with the power supply unit.

In the opening portion of the insertion hole on the optical member side, the portion on the 2 nd region side may be higher than the portion on the 1 st region side.

Further, the power supply unit may include an insulating cover disposed between the base and the power supply unit, and the insertion hole may be provided in the insulating cover.

The insulating cover may have a cylindrical portion protruding therefrom, and the insertion hole may be a cylindrical hole of the cylindrical portion.

In addition, a through hole may be provided in the 1 st region of the placement surface of the base, and the tubular portion may pass through the through hole of the base.

In addition, at least one of the 1 st light emitting unit and the 2 nd light emitting unit may be an LED module including a substrate and a plurality of LED packages arranged on the substrate, and in the LED module, the plurality of LED packages may be arranged symmetrically with respect to a straight line passing through a center of the lighting device and a center of the insertion hole at least in a vicinity of the insertion hole.

The power line passing through the insertion hole may be connected to the substrate at a position between two adjacent LED packages among the plurality of LED packages in the substrate of the LED module.

The power line may be connected to the power supply unit and the substrate of the LED module in a pair, and a plurality of the plurality of LED packages may be arranged between a 1 st connection unit and a 2 nd connection unit, wherein the 1 st connection unit is a connection portion between one of the pair of power lines and the substrate, and the 2 nd connection unit is a connection portion between the other of the pair of power lines and the substrate.

The 1 st connecting portion and the 2 nd connecting portion may be arranged line-symmetrically with respect to the straight line.

The 2 nd light emitting unit may be located outside the 1 st light emitting unit.

The 1 st light transmitting portion may collect the 1 st light, and the 2 nd light transmitting portion may diffuse the 2 nd light.

The insertion hole may be injection molded with a resin material in a state where the power line is inserted.

Further, an aspect of the present utility model relates to a lighting device, comprising: the lighting device and the appliance with the lighting device removably mounted thereon.

Effects of the utility model

According to the present utility model, the degree of freedom in layout of the plurality of light sources included in the 2 nd light emitting portion arranged in the 2 nd region of the base can be improved.

Drawings

Fig. 1 is a perspective view of an LED lamp according to the embodiment when viewed from obliquely above.

Fig. 2 is a perspective view of the LED lamp according to the embodiment when viewed obliquely from below.

Fig. 3 is an exploded perspective view of the LED lamp according to the related embodiment.

Fig. 4 is a top view of an LED lamp according to the embodiment.

Fig. 5 is a cross-sectional view of an LED lamp of the related embodiment of the V-V line of fig. 4.

Fig. 6 is a cross-sectional view of an LED lamp of the related embodiment of line VI-VI of fig. 4.

Fig. 7 is a perspective view of an optical member of the LED lamp according to the embodiment, as seen from the inner surface side.

Fig. 8 is a perspective view of an optical member of the LED lamp according to the embodiment, as seen from the outer surface side.

Fig. 9 is a perspective view showing an enlarged part of an insulating cover of the LED lamp according to the embodiment.

Fig. 10 is a perspective view showing the tube portion and the peripheral portion of the tube portion in a state where the power line is not inserted into the insertion hole.

Fig. 11 is a perspective view showing the tube portion and the peripheral portion of the tube portion in a state where the electric power line is inserted into the insertion hole.

Fig. 12 is a diagram showing a state when the LED lamp according to the embodiment irradiates illumination light in a condensing mode.

Fig. 13 is a diagram showing a state when the LED lamp according to the embodiment irradiates illumination light in a diffuse mode.

Fig. 14 is an enlarged view showing a tube portion of an insulating cover of an LED lamp according to the embodiment and a peripheral portion of the tube portion.

Description of the reference numerals

1LED lamp (Lighting device)

10 St light emitting part 1

20 Nd light emitting part

21. Substrate board

22 LED package

30. Base station

31A zone 1

31B region 2

34. Through hole

40. Optical component

41 St light-transmitting portion

42 Nd light transmitting portion

50. Power supply unit

60. Insulating cover

61. Barrel part

61A through-hole

Detailed Description

Embodiments of the present disclosure will be described below with reference to the drawings. The embodiments described below each represent a specific example of the present utility model. Accordingly, the numerical values, shapes, materials, components, arrangement positions of components, connection modes, and the like shown in the following embodiments are examples, and are not intended to limit the present utility model. Accordingly, among the constituent elements of the following embodiments, the constituent elements not described in the independent claims showing the uppermost concepts of the present disclosure are described as arbitrary constituent elements.

The drawings are schematic and are not necessarily strictly illustrated. In the drawings, substantially the same structures are denoted by the same reference numerals, and the repetitive description thereof will be omitted or simplified. In the present specification, the terms "upper" and "lower" do not necessarily refer to an upper part (vertically upper) and a lower part (vertically lower) in absolute spatial recognition.

(Embodiment)

First, the overall structure of the LED lamp 1 according to the embodiment will be described with reference to fig. 1 and 2. Fig. 1 is a perspective view of the LED lamp 1 according to the embodiment when viewed from obliquely above, and fig. 2 is a perspective view of the LED lamp 1 when viewed from obliquely below.

The LED lamp 1 is an example of a lighting device, and irradiates light. As shown in fig. 1 and 2, the LED lamp 1 is a thin flat lamp. Specifically, the LED lamp 1 is a flat (disk-like) illumination light source having a flat and cylindrical overall shape. For example, the external dimension of the LED lamp 1 is phi 70mm, but the present invention is not limited thereto.

The LED lamp 1 is a replacement lamp that is attached to a lamp holder, and is detachably attached to the lamp holder. The LED lamp 1 is mounted to a lamp socket and is turned on by power supplied through the lamp socket. The lamp holder is mounted on an appliance or a bracket arranged on building materials such as a ceiling, a wall, a floor and the like, or directly arranged on the building materials. By mounting the LED lamp 1 to a lamp holder, a lighting fixture such as a headlight, a spotlight, or a ceiling lamp is constituted. Such a lighting fixture includes, for example, the LED lamp 1 and a fixture to which the LED lamp 1 is detachably attached.

In the present embodiment, the LED lamp 1 has a base attached to a lamp socket. Specifically, the LED lamp 1 has a GX53 base detachably attached to a GX53 socket. The base of the LED lamp 1 is not limited to the GX53 base, and may be another base such as a GH76p base. The LED lamp 1 may be a lighting device without a base.

Next, a detailed configuration of the LED lamp 1 according to the present embodiment will be described with reference to fig. 3 to 6. Fig. 3 is an exploded perspective view of the LED lamp 1 according to the embodiment. Fig. 4 is a plan view of the LED lamp 1. In fig. 4, (a) is a plan view of the optical member 40 in a mounted state, and (b) is a plan view of the optical member 40 in a removed state. Fig. 5 is a cross-sectional view taken along line V-V of fig. 4, and fig. 6 is a cross-sectional view taken along line VI-VI of fig. 4. In fig. 6, a pair of power lines 131 and a pair of power lines 132 inserted through the insertion hole 61a are omitted.

As shown in fig. 3 to 6, the LED lamp 1 includes a 1 st light emitting portion 10, a 2 nd light emitting portion 20, a base 30, an optical member 40, a power supply portion 50, an insulating cover 60, a 1 st holder 70, a 2 nd holder 80, a heat sink 90, a housing 100, and pins 110.

In the present embodiment, the optical member 40 and the housing 100 are outline members. Accordingly, the optical member 40 and the housing 100 constitute a housing, and the various components described above, such as the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20, are housed in the housing.

The 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are light source units that emit light, respectively. Specifically, the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are light emitting modules that emit light of a predetermined color, and emit white light as illumination light, for example. In the present embodiment, the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are LED modules each having a plurality of LEDs as a plurality of light sources. The light emitted from the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 is transmitted through the optical member 40 and emitted to the outside of the LED lamp 1.

The 1 st light emitting unit 10 is a light emitting module that emits 1 st light. In the present embodiment, the 1 st light emitting unit 10 irradiates white light as 1 st light. In the present embodiment, the 1 st light emitting unit 10 is a COB (Chip On Board) LED module, and includes a substrate 11 and an LED light emitting unit 12 disposed On the substrate 11, as shown in fig. 3 to 6.

The substrate 11 is a mounting substrate for mounting the LEDs included in the LED light emitting section 12. As a base material constituting the substrate 11, a ceramic substrate, a resin substrate, a metal base substrate, or the like is used. In the present embodiment, the shape of the substrate 11 in a plan view is substantially rectangular. Specifically, the shape of the substrate 11 in a plan view is a shape in which a part (corner or the like) of a square is cut out. The shape of the substrate 11 in plan view is not limited to a square or rectangular shape, and may be a circular shape or the like.

The substrate 11 is formed with a pair of terminals 11a (see fig. 4) for receiving dc power for emitting light from the LEDs included in the LED light emitting unit 12 from the outside, and a metal wiring having a predetermined pattern for connecting the pair of terminals 11a and electrically connecting the LEDs to each other. In order to protect the metal wiring and secure insulation and voltage resistance, a resist made of an insulating resin material may be formed on the surface of the substrate 11 so as to cover the metal wiring.

In the present embodiment, the pair of terminals 11a are electrodes formed on the surface of the substrate 11. The pair of terminals 11a are electrically connected to the power supply unit 50 via a pair of power lines 131. In addition, the pair of terminals 11a may be connector terminals instead of electrodes.

The LED light emitting unit 12 includes a plurality of LED chips as a plurality of LEDs mounted on the substrate 11, and a sealing member for sealing the plurality of LED chips.

In the 1 st light emitting section 10, the LED of the LED light emitting section 12 is a bare chip that emits visible light of a single color. The LED is, for example, a blue LED chip that emits blue light if energized. A plurality of LEDs are arranged in a matrix on the substrate 11, for example. In addition, at least 1 LED may be provided.

The sealing member of the LED light emitting unit 12 is made of a light-transmitting insulating resin material such as silicone. The sealing member of the present embodiment contains a phosphor as a wavelength conversion material that converts the wavelength of light from an LED (LED chip). The sealing member is, for example, a phosphor-containing resin in which a phosphor is dispersed in a silicone resin. That is, the sealing member is a phosphor-containing resin in which a phosphor is contained in a light-transmitting resin, and the wavelength of light from the LED chip is converted (color converted) to a predetermined wavelength.

When the LED is a blue LED chip that emits blue light, for example, a YAG-based yellow phosphor can be used as the phosphor contained in the sealing member to obtain white light. In this case, the yellow phosphor absorbs a part of the blue light emitted from the blue LED chip and is excited, and emits yellow light. The yellow light is mixed with blue light not absorbed by the yellow phosphor, and is emitted from the LED light emitting unit 12 as white light. In addition, a light diffusing material such as silica or a filler may be dispersed in the sealing member.

As shown in fig. 3 and 4, in the present embodiment, the sealing member of the LED light emitting unit 12 is formed in a circular shape in a plan view so as to seal all the LEDs together. The outer shape of the sealing member defines the outer shape of the LED light emitting section 12. In this case, by forming annular projections (dams) on the substrate 11, the liquid sealing member is caught by the projections when the liquid sealing member is applied on the substrate 11.

The sealing member may seal the LEDs together in a shape other than a circular shape (for example, a rectangular shape). The sealing member may seal a plurality of LEDs in a linear manner, instead of sealing all the LEDs together, or may seal the LEDs individually.

The 2 nd light emitting unit 20 is a light emitting module that emits 2 nd light. In the present embodiment, the 2 nd light emitting unit 20 irradiates white light as the 2 nd light. The color temperature of the white light emitted from the 2 nd light emitting unit 20 as the 2 nd light may be the same as or different from the color temperature of the white light emitted from the 1 st light emitting unit 10 as the 1 st light. For example, the color temperature of the white light emitted from the 1 st light emitting unit 10 may be higher than the color temperature of the white light emitted from the 2 nd light emitting unit 20, or the color temperature of the white light emitted from the 2 nd light emitting unit 20 may be higher than the color temperature of the white light emitted from the 1 st light emitting unit 10. In the present embodiment, the color temperature of the white light emitted from the 1 st light emitting unit 10 is set to be higher than the color temperature of the white light emitted from the 2 nd light emitting unit 20. As an example, the color temperature of the white light emitted from the 1 st light emitting unit 10 is about 5000K, and the color temperature of the white light emitted from the 2 nd light emitting unit 20 is 2700K.

The 2 nd light emitting unit 20 is an SMD (Surface Mount Device: surface mounted device) LED module, and includes a substrate 21 and a plurality of LED packages 22 arranged as leds on the substrate 21, as shown in fig. 3 to 6.

The substrate 21 is a mounting substrate for mounting the LED package 22. As a base material constituting the substrate 21, a ceramic substrate, a resin substrate, a metal base substrate, or the like is used. In the present embodiment, the shape of the substrate 21 in a plan view is a ring shape. Specifically, the shape of the substrate 21 in a plan view is a circular ring. The shape of the substrate 21 in plan view is not limited to an annular shape, and may be a rectangular annular shape or the like. The substrate 21 may be divided into a plurality of pieces.

A pair of terminals 21a (see fig. 3 and 4) for receiving dc power for lighting the LED package 22 from the outside, and a predetermined pattern of metal wiring for connecting the pair of terminals 21a and electrically connecting the LED packages 22 to each other are formed on the substrate 21. In order to protect the metal wiring and secure insulation and voltage resistance, a resist made of an insulating resin material may be formed on the surface of the substrate 21 so as to cover the metal wiring.

In the present embodiment, the pair of terminals 21a are connector terminals. The pair of terminals 21a are electrically connected to the power supply unit 50 via a pair of power lines 132. For example, by inserting the pair of power lines 132 into the pair of terminals 21a, the pair of terminals 21a are electrically and mechanically connected to the pair of power lines 132. The pair of terminals 21a may be electrodes formed on the surface of the substrate 21 instead of the connector terminals.

The plurality of LED packages 22 are white LED light sources that emit white light, respectively. Specifically, each LED package 22 is a Surface Mount (SMD) type LED light source in which an LED is packaged, and includes a container (package), an LED chip mounted in the container, and a sealing member for sealing the LED chip.

The LED chip of the LED package 22 is an example of a semiconductor light emitting element that emits light by a predetermined direct current power, and is a bare chip that emits visible light of a single color. The LED chip is, for example, a blue LED chip that emits blue light if energized. The number of LED chips mounted on the LED package 22 may be not 1 but a plurality. In this case, the plurality of LED chips mounted on the LED package 22 may be two LED chips selected from a blue LED chip that emits blue light, a red LED chip that emits red light, and a green LED chip that emits green light. The LED package 22 may be configured to serve as an RGB white light source by setting the number of LED chips mounted on the LED package 22 to 3, i.e., a blue LED chip, a red LED chip, and a green LED chip.

The sealing member of the LED package 22 is made of a light-transmitting insulating resin material such as silicone. The sealing member of the present embodiment includes a phosphor as a wavelength conversion material that converts the wavelength of light from the LED chip. That is, the sealing member is a phosphor-containing resin in which a phosphor is contained in a light-transmitting resin, and the wavelength of light from the LED chip is converted (color converted) to a predetermined wavelength. The sealing member is filled in the recess of the container.

As the phosphor to be contained in the sealing member, for example, a YAG-based yellow phosphor can be used to obtain white light when the LEDs are 1 blue LED chip emitting blue light. In this case, the yellow phosphor absorbs a part of the blue light emitted from the blue LED chip and is excited, and emits yellow light. The yellow light is mixed with blue light not absorbed by the yellow phosphor, and is emitted from the LED package 22 as white light. In addition, a light diffusing material such as silica or a filler may be dispersed in the sealing member. The sealing member may not contain a fluorescent material. For example, in the case where 3 LED chips, that is, a blue LED chip, a red LED chip, and a green LED chip, are mounted on the LED package 22, the sealing member may not contain a phosphor.

As shown in fig. 4, a plurality of LED packages 22 are arranged in a circular ring shape on a circular ring-shaped substrate 21. In the present embodiment, the plurality of LED packages 22 are arranged in two rows in a circular ring shape. For example, when the external dimension of the LED lamp 1 is Φ70mm, the LED packages 22 located on the outer side of the two rows are arranged along a circle of Φ51mm, and the LED packages 22 located on the inner side of the two rows are arranged along a circle of Φ42.5 mm.

As shown in fig. 4 to 6, the 2 nd light emitting portion 20 is located outside the 1 st light emitting portion 10. That is, the 1 st light emitting section 10 is located inside the 2 nd light emitting section 20. Specifically, the annular substrate 21 of the 2 nd light-emitting portion 20 is positioned outside the substantially rectangular substrate 11 of the 1 st light-emitting portion 10, and the substrate 21 surrounds the entire periphery of the substrate 11 in a plan view. That is, the substantially rectangular substrate 11 of the 1 st light emitting section 10 is surrounded by the substrate 21 of the 2 nd light emitting section 20.

As shown in fig. 5 and 6, the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are disposed on the base 30 and supported by the base 30. The base 30 is a support base for supporting the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. In the present embodiment, the base 30 is a module board that supports the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 as LED modules.

The base 30 has a 1 st surface 31 as a surface on which the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are arranged, and a 2 nd surface 32 opposite to the 1 st surface 31. The 1 st surface 31 of the base 30 is a surface on the optical member 40 side, and the 2 nd surface 32 of the base 30 is a surface on the power supply unit 50 side. The 1 st surface 31 and the 2 nd surface 32 are flat surfaces, but are not limited thereto.

The 1 st surface 31 is a layout surface including a1 st region 31a in which the 1 st light emitting unit 10 is arranged and a2 nd region 31b in which the 2 nd light emitting unit 20 is arranged. Specifically, the 1 st substrate 11 (1 st substrate) of the 1 st light-emitting unit 10 is disposed in the 1 st region 31a, and the 2 nd substrate 21 (2 nd substrate) of the 2 nd light-emitting unit 20 is disposed in the 2 nd region 31 b. That is, the 1 st surface 31 is a substrate arrangement surface. In the present embodiment, the substrate 11 of the 1 st light-emitting portion 10 and the substrate 21 of the 2 nd light-emitting portion 20 are placed on the 1 st surface 31 in contact with the 1 st surface 31. A thermally conductive sheet or the like may be interposed between the 1 st surface 31 of the base 30 and the substrates 11 and 21 of the 1 st and 2 nd light emitting units 10 and 20.

The 2 nd region 31b is located outside the 1 st region 31 a. Specifically, the 2 nd region 31b surrounds the entire circumference of the 1 st region 31 a. The 1 st region 31a is a circular region in plan view, and the 2 nd region 31b is a circular region surrounding the 1 st region 31 a. The circle constituting the outline of the 1 st region 31a and the circle constituting the outline of the 2 nd region 31b are concentric. In the present embodiment, the radius of the circle constituting the outer shape of the 1 st region 31a is smaller than the width (radial length) of the annular 2 nd region 31 b. That is, the width of the 2 nd region 31b is larger than the radius of the 1 st region 31 a. The center of the circle constituting the outline of the 1 st region 31a is the center of the LED lamp 1.

The base 30 also functions as a heat sink for dissipating heat generated by the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20. Accordingly, the base 30 is preferably made of a metal material such as aluminum or a resin material having high thermal conductivity. In the present embodiment, the base 30 is made of metal, for example, a metal plate made of aluminum.

The 1 st light emitting unit 10 and the 2 nd light emitting unit 20 arranged on the base 30 are fixed to the base 30.

As shown in fig. 4 to 6, the 1 st light emitting unit 10 is fixed to the base 30 by a screw 121. The screw 121 is an example of a fixing member for fixing the 1 st light emitting unit 10 to the base 30. In the present embodiment, the 1 st light emitting unit 10 is fixed to the base 30 not only by the screw 121 but also by the 1 st holder 70. Specifically, the 1 st light emitting unit 10 is fixed to the base 30 with the substrate 11 pressed against the base 30 by the 1 st holder 70. In this case, the 1 st holder 70, the substrate 11, and the base 30 are fastened together with the screw 121 by inserting the screw 121 into the screw hole 71 (see fig. 3 and 5) of the 1 st holder 70 and screwing the screw 121 into the screw hole 33a of the base 30 in a state in which the substrate 11 of the 1 st light emitting portion 10 is sandwiched between a part of the 1 st holder 70 and the base 30. Thereby, the 1 st light emitting unit 10 can be fixed to the base 30. As shown in fig. 3 and 4, 3 screws 121 are used, but the present invention is not limited thereto. Further, as shown in fig. 4, 3 screws 121 may be provided at the peripheral edge portion of the 1 st region 31a in the 1 st surface 31 of the base 30.

The 1 st holder 70 is a light source holder that holds the 1 st light emitting portion 10. The 1 st holder 70 is made of an insulating resin material such as polybutylene terephthalate (PBT; polybutylene terephthalate).

As shown in fig. 4 and 6, the 2 nd light emitting portion 20 is fixed to the base 30 by a screw 122. The screw 122 is an example of a fixing member for fixing the 2 nd light emitting portion 20 to the base 30. In the present embodiment, the 2 nd light emitting portion 20 is directly fixed to the base 30 only by the screw 122. Specifically, the 2 nd light emitting portion 20 can be fixed to the base 30 by inserting the screw 122 into the screw hole 21b (see fig. 3 and 6) formed in the substrate 21 of the 2 nd light emitting portion 20 and screwing the screw 122 into the screw hole 33a of the base 30. As shown in fig. 3 and 4, 3 screws 122 are used, but the present invention is not limited thereto. Further, 3 screws 122 may be provided at the peripheral edge portion of the 2 nd region 31b in the 1 st surface 31 of the base 30. In this case, screw holes 21b of the base plate 21 are formed at the outer peripheral end portion of the base plate 21.

The 1 st light emitting unit 10 and the 2 nd light emitting unit 20 emit light by the electric power supplied from the power supply unit 50. The 1 st light emitting section 10 and the 2 nd light emitting section 20 are independently driven by the power supply section 50. Thus, the current path from the power supply unit 50 to the 1 st light emitting unit 10 and the current path from the power supply unit 50 to the 2 nd light emitting unit 20 are separated.

Specifically, the 1 st light emitting unit 10 and the power supply unit 50 are electrically connected by a pair of power lines 131 (1 st power line) shown in fig. 3 and 4. Specifically, the pair of terminals 11a of the substrate 11 in the 1 st light emitting unit 10 and the power supply unit 50 are connected by a pair of power lines 131. In this case, one end of the pair of power lines 131 is connected to one of the pair of terminals 11a, and the other end of the pair of power lines 131 is connected to the other of the pair of terminals 11 a.

The 2 nd light emitting unit 20 and the power supply unit 50 are electrically connected by a pair of power lines 132 (2 nd power line) shown in fig. 3 and 4. Specifically, the pair of terminals 21a of the substrate 21 in the 2 nd light emitting unit 20 and the power supply unit 50 are connected by a pair of power lines 132. In this case, one end of the pair of power lines 132 is connected to one of the pair of terminals 21a, and the other end of the pair of power lines 132 is connected to the other of the pair of terminals 21 a.

The pair of power lines 131 and 132 are power lines for supplying power to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. In the present embodiment, dc power is supplied from the power supply unit 50 to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. Thus, one of the pair of power lines 131 is a high-potential-side power supply line, and the other of the pair of power lines 131 is a low-potential-side power supply line. Similarly, one of the pair of power lines 132 is a high-potential-side power supply line, and the other of the pair of power lines 132 is a low-potential-side power supply line. The pair of power lines 131 and the pair of power lines 132 are, for example, leads composed of a core wire formed of a conductive material such as alloy copper and an insulating resin coating film covering the core wire.

As shown in fig. 5 and 6, the base 30 is provided between the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 and the power supply unit 50. Thus, the base 30 is provided with a through hole 34 through which the pair of power lines 131 and the pair of power lines 132 are inserted. The through hole 34 is provided in the 1 st region 31a of the 1 st surface 31 of the base 30.

By supplying power from the power supply unit 50 to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20, light is emitted from the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. The light emitted from the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 enters the optical member 40. The optical member 40 is made of a light-transmitting material, and the light-transmitting optical member 40 that enters the 1 st light-emitting portion 10 and the 2 nd light-emitting portion 20 of the optical member 40 is emitted to the outside of the optical member 40.

As shown in fig. 5 and 6, the optical member 40 is a light-transmitting cover covering the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20. The optical member 40 is attached to an opening end portion of the opening 101 of the case 100. In this case, the optical member 40 may be fixed to the housing 100 by providing a locking structure such as a locking claw or a locking hole at the opening end portions of the optical member 40 and the housing 100, or the optical member 40 may be fixed to the housing 100 by fitting the optical member 40 into the housing 100, or by rotating the optical member 40 by forming screw grooves at the opening end portions of the optical member 40 and the housing 100, respectively.

The optical member 40 has a 1 st light-transmitting portion 41 through which the 1 st light emitted from the 1 st light-emitting portion 10 is transmitted, and a 2 nd light-transmitting portion 42 through which the 2 nd light emitted from the 2 nd light-emitting portion 20 is transmitted. Thus, the 1 st light emitted from the 1 st light emitting unit 10 enters the 1 st light transmitting unit 41 of the optical member 40, and is emitted to the outside through the 1 st light transmitting unit 41. The 2 nd light emitted from the 2 nd light emitting unit 20 enters the 2 nd light transmitting unit 42 of the optical member 40, and is emitted to the outside through the 2 nd light transmitting unit 42.

Note that not all of the light emitted from the 1 st light emitting portion 10 may be transmitted through the 1 st light transmitting portion 41. For example, a part of the light emitted from the 1 st light emitting portion 10 may be transmitted through the 2 nd light transmitting portion 42 or may be transmitted through a portion of the optical member 40 other than the 1 st light transmitting portion 41 and the 2 nd light transmitting portion 42. Similarly, not all of the light emitted from the 2 nd light emitting portion 20 may be transmitted through the 2 nd light transmitting portion 42. For example, a part of the light emitted from the 2 nd light emitting portion 20 may be transmitted through the 1 st light transmitting portion 41 or may be transmitted through a portion of the optical member 40 other than the 1 st light transmitting portion 41 and the 2 nd light transmitting portion 42.

The 1 st light transmitting portion 41 is disposed opposite to the 1 st light emitting portion 10, and the 2 nd light transmitting portion 42 is disposed opposite to the 2 nd light emitting portion 20. Thus, in a plan view, the 1 st light transmitting portion 41 is provided at a position overlapping the 1 st region 31a of the base 30 where the 1 st light emitting portion 10 is arranged, and the 2 nd light transmitting portion 42 is provided at a position overlapping the 2 nd region 31b of the base 30 where the 2 nd light emitting portion 20 is arranged. In the present embodiment, since the 1 st light emitting portion 10 is located inside the 2 nd light emitting portion 20, the 1 st light transmitting portion 41 is located inside the 2 nd light transmitting portion 42. The 2 nd light transmitting portion 42 is formed in a circular ring shape so as to surround the 1 st light transmitting portion 41.

The optical member 40 applies optical action to the light emitted from each of the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. For example, the optical member 40 may have a light distribution control function for controlling the light distribution of the light emitted from the 1 st light emitting unit 10 and the 2 nd light emitting unit 20.

In the present embodiment, the optical member 40 is configured such that the optical effect of the 1 st light transmitting portion 41 on the 1 st light and the optical effect of the 2 nd light transmitting portion 42 on the 2 nd light are different. That is, the optical member 40 is configured such that the optical characteristics of the light emitted from the 1 st light-transmitting portion 41 and the 2 nd light-transmitting portion 42 are different in the 1 st light-transmitting portion 41 and the 2 nd light-transmitting portion 42. In the present embodiment, the optical member 40 is configured such that the light distribution angle of the light emitted from the 1 st light transmitting portion 41 is different from the light distribution angle of the light emitted from the 2 nd light transmitting portion 42.

As an example, the 1 st light transmitting portion 41 has a light condensing function of condensing the light of the 1 st light emitting portion 10, and the 2 nd light transmitting portion 42 has a diffusing function of diffusing (scattering) the light of the 2 nd light emitting portion 20. Thus, the light distribution angle of the light incident on the 1 st light transmitting portion 41 and emitted from the 1 st light transmitting portion 41 (i.e., the light of the 1 st light emitting portion 10 after transmitting the 1 st light transmitting portion 41) is smaller than the light distribution angle of the light incident on the 2 nd light transmitting portion 42 and emitted from the 2 nd light transmitting portion 42 (i.e., the light of the 2 nd light emitting portion 20 after transmitting the 2 nd light transmitting portion).

In the present embodiment, the 1 st light transmitting portion 41 has a lens function. Specifically, as shown in fig. 7, the 1 st light transmitting portion 41 is a fresnel lens, and light is refracted and condensed by the 1 st light emitting portion 10. The 1 st light transmitting portion 41 is a fresnel lens, and includes a central protruding portion formed on an inner surface (light incident surface) of the 1 st light transmitting portion 41 and a plurality of annular protruding portions surrounding the central protruding portion in concentric annular shapes. The central protruding portion and the plurality of annular protruding portions form an annular shape of the fresnel lens. Fig. 7 is a perspective view of the optical member 40 of the LED lamp 1 as seen from the inner surface side.

For example, when the external dimension of the LED lamp 1 is Φ70mm, as shown in fig. 4 to 6, the outermost diameter Φ1 of the 1 st light-transmitting portion 41 (i.e., the outermost diameter of the fresnel lens) is Φ1=30.22 mm. In the present embodiment, the outermost diameter Φ1 of the 1 st light-transmitting portion 41 is smaller than the diameter of the 1 st region 31a of the 1 st surface 31 of the base 30. Thus, when the screw 121 is disposed at the peripheral edge portion of the 1 st region 31a of the base 30, the screw 121 can be easily disposed in the vicinity of the boundary portion between the 1 st light-transmitting portion 41 and the 2 nd light-transmitting portion 42 (i.e., in the vicinity of the outermost diameter portion of the 1 st light-transmitting portion 41).

As shown in fig. 4, the 3 screws 121 are arranged such that the center of each screw 121 is arranged along a circle Φ2=29.2 mm. The 3 screws 121 are not arranged at equal intervals, but may be arranged at equal intervals of 120 °.

As shown in fig. 4, at least a part of the screw 121 overlaps the 1 st light-transmitting portion 41 of the optical member 40 in a plan view (when viewed from the light emission direction side of the LED lamp 1). With this structure, the screw 121 is disposed below the 1 st light transmitting portion 41 while the screw 121 is blocked by the 1 st light transmitting portion 41, so that it is difficult to see the screw 121 beyond the 1 st light transmitting portion 41 as a fresnel lens. Thus, the screw 121 is difficult to be recognized by the user when the LED lamp 1 is turned off, so that the design of the LED lamp 1 at the time of turning off can be improved. In this case, as shown in fig. 5 and 6, the center of the screw 121 may be located inside the outermost portion of the 1 st light transmitting portion 41. I.e. may be phi 2< phi 1. This makes it more difficult to see the screw 121 beyond the 1 st light transmitting portion 41, and thus the design of the LED lamp 1 can be further improved.

The plurality of LED packages 22 of the 2 nd light emitting portion 20 may be arranged at positions outside the outermost portion of the 1 st light transmitting portion 41. That is, the plurality of LED packages 22 may be arranged along a circle having a diameter larger than the outermost diameter of the fresnel lens constituting the 1 st light transmitting portion 41. Accordingly, the LED package 22 of the 2 nd light emitting portion 20 can be suppressed from being reflected on the 1 st light transmitting portion 41 as the fresnel lens when the 2 nd light emitting portion 20 is turned on, and thus the design of the LED lamp 1 can be improved.

The 2 nd light transmitting portion 42 has a function of diffusing light by scattering and reflecting the incident light. Specifically, as shown in fig. 7, a plurality of shallow recesses 42a (concave portions) are formed in the inner surface of the 2 nd light transmitting portion 42. The plurality of concave portions 42a are formed so as to be substantially entirely covered with the 2 nd light-transmitting portion 42. This allows the 2 nd light transmitting portion 42 to have a light diffusing function, so that light transmitted through the 2 nd light transmitting portion 42 can be diffused.

In the present embodiment, the inner surface of the 2 nd translucent portion 42 is also embossed. That is, the surface of the shallow recess 42a of the 2 nd light transmitting portion 42 is embossed. As described above, since the inner surface of the 2 nd light transmitting portion 42 is embossed, the minute uneven structure can be formed on the inner surface of the 2 nd light transmitting portion 42, and therefore the inner surface of the 2 nd light transmitting portion 42 can be made to be a white and hazy surface like frosted glass. In this way, by embossing in addition to forming the plurality of shallow concave portions 42a on the inner surface of the 2 nd light transmitting portion 42, the diffusion degree of the 2 nd light transmitting portion 42 can be improved.

In the present embodiment, the 2 nd light transmitting portion 42 is provided with the light diffusing function by forming both the plurality of shallow concave portions 42a and the minute uneven structure by embossing on the inner surface of the 2 nd light transmitting portion 42, but the present invention is not limited thereto. For example, the 2 nd light transmitting portion 42 may have a light diffusing function by forming only one of a plurality of shallow concave portions 42a and a minute concave-convex structure on the inner surface of the 2 nd light transmitting portion 42.

In the present embodiment, the process of forming the minute uneven structure on the inner surface of the 2 nd light transmitting portion 42 is embossing, but the present invention is not limited thereto. For example, the inner surface of the 2 nd light-transmitting portion 42 may be subjected to etching, sandblasting, or the like to form a minute uneven structure on the inner surface of the 2 nd light-transmitting portion 42.

The method of providing the light diffusion function to the 2 nd light transmission portion 42 is not limited to the method of forming the shallow concave portion 42a and the minute concave-convex structure on the inner surface of the 2 nd light transmission portion 42, and a light diffusion film may be formed on the inner surface of the 2 nd light transmission portion 42, or a dot pattern for light diffusion may be printed on the 2 nd light transmission portion 42, or a light diffusion material may be dispersed inside the 2 nd light transmission portion 42, or a lens for light diffusion may be formed on the 2 nd light transmission portion 42. As the light diffusion film, a milky white resin film containing a light diffusion material such as silica or calcium carbonate can be used. As a lens for diffusing light, a lens array or a divergent lens for diffusing (diverging) light by refraction may be used.

As shown in fig. 8, a plurality of shallow recesses 40a (concave portions) are formed on the outer surface (light emitting surface) of the optical member 40. The plurality of concave portions 40a are formed so as to be substantially entirely spread over the outer surface of the optical member 40. Thus, the shallow concave portion 40a is formed on the outer surface of the 1 st light transmitting portion 41 and the outer surface of the 2 nd light transmitting portion 42. Fig. 8 is a perspective view of the optical member 40 of the LED lamp 1 as seen from the outer surface side. By forming the shallow concave portion 40a on the outer surface of the 1 st light transmitting portion 41 in this way, the light condensed by the 1 st light transmitting portion 41 is scattered, and thus the granular sensation (light-dark difference) of the plurality of LEDs of the LED light emitting portion 12 can be suppressed. Further, by forming the shallow concave portion 40a on the outer surface of the 2 nd light transmitting portion 42, it is possible to scatter light diffused by the 2 nd light transmitting portion 42, to suppress the granular sensation (light-dark difference) of the plurality of LED packages 22, and to also diffuse light transmitted through the 2 nd light transmitting portion 42.

In addition, embossing is also performed on the outer surface of the optical member 40. That is, the surface of the shallow recess 40a of the outer surface of the optical member 40 is embossed. Thus, a fine concave-convex structure is formed on the outer surface of the optical member 40. In this case, the minute concave-convex structure (embossing) formed on the outer surface of the optical member 40 is different from the minute concave-convex structure (embossing) formed on the inner surface of the 2 nd light transmitting portion 42. Specifically, the minute concave-convex structure formed on the outer surface of the optical member 40 is an embossed pattern thinner than the minute concave-convex structure formed on the inner surface of the 2 nd light transmitting portion 42.

In the present embodiment, the surface of the central protruding portion of the 1 st light transmitting portion 41 constituting the fresnel lens is embossed. That is, a minute uneven structure (embossing) is formed on the surface of the central protruding portion of the 1 st light transmitting portion 41. In this case, the minute concave-convex structure formed on the surface of the central protruding portion may be a thin embossing. In addition, no embossing is formed on the surfaces of the plurality of annular protruding portions of the 1 st light transmitting portion 41. That is, in the 1 st light transmitting portion 41, embossments are formed only in the central protruding portion of the central protruding portion and the annular protruding portion. Further, no embossing may be formed on the surface of the central protruding portion of the 1 st light transmitting portion 41.

As described above, in the present embodiment, the 1 st light transmitting portion 41 (fresnel portion) has the shallow concave portion 40a formed on the outer surface and the thin embossed portion formed on the inner surface at the central protruding portion. The 2 nd light transmitting portion 42 (diffusion portion) has shallow recesses and embossments formed on both the outer surface and the inner surface.

Further, a pair of projections 43 are provided on the outer surface of the optical member 40. The pair of protrusions 43 function as holding portions for holding the fingers of a user when the LED lamp 1 is rotated and attached to the lighting fixture. Since the pair of projections 43 is provided, the LED lamp 1 can be easily rotated, and the LED lamp 1 can be easily attached to or detached from the lighting apparatus.

The optical member 40 is formed using a light-transmitting material. In the present embodiment, the optical member 40 is formed into a predetermined shape by a mold or the like using a transparent resin material such as acrylic or polycarbonate or a transparent material such as a glass material.

As shown in fig. 5 and 6, the power supply unit 50 is disposed on the 2 nd surface 32 side of the base 30. That is, the power supply unit 50 is disposed on the opposite side of the base 30 from the 1 st surface 31 side. The power supply unit 50 is housed in a space surrounded by the base 30 and the housing 100.

The power supply unit 50 constitutes a power supply circuit for supplying power to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. The power supply unit 50 generates electric power for causing the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20 to emit light. For example, the power supply unit 50 converts ac power supplied from the pair of pins 110 into dc power, and supplies the dc power to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20.

The power supply unit 50 includes a circuit board 51 and a plurality of circuit elements (not shown) mounted on the circuit board 51. The circuit board 51 is a Printed Circuit Board (PCB) on which a metal wiring pattern such as copper foil is formed. In the present embodiment, the circuit board 51 is a plate-like board with a part of a circular plate cut away, for example. The plurality of circuit elements are, for example, capacitance elements such as electrolytic capacitors and ceramic capacitors, coil elements (inductors) such as chopper coils and chopper transformers, transistor elements such as FETs, resistance elements such as resistors, diodes, and the like.

The power supply unit 50 may include a dimming circuit for dimming the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. The power supply unit 50 may include other control circuits such as a wireless communication circuit.

As shown in fig. 5 and 6, the power supply unit 50 is covered with an insulating cover 60. The insulating cover 60 is disposed between the base 30 and the power supply unit 50. The insulating cover 60 is made of an insulating resin material such as PBT.

As shown in fig. 3 to 6, the insulating cover 60 is provided with an insertion hole 61a through which the pair of power lines 131 and the pair of power lines 132 are inserted. As shown in fig. 4 and 6, the insertion hole 61a is provided at a position corresponding to the 1 st region 31a of the 1 st surface 31 of the base 30. That is, the insertion hole 61a is present in the 1 st region 31a of the 1 st surface 31 of the base 30 in a plan view.

In the present embodiment, the insertion hole 61a exists not only in the 1 st region 31a of the 1 st surface 31 but also in the 2 nd region 31 b. That is, the insertion hole 61a exists across the 1 st region 31a and the 2 nd region 31b, and exists in both the 1 st region 31a and the 2 nd region 31 b. However, the proportion of the insertion hole 61a is larger in the 1 st region 31a than in the 2 nd region 31 b. That is, the area of the insertion hole 61a in the 1 st region 31a is larger than the area of the insertion hole 61a in the 2 nd region 31 b. The insertion hole 61a may be formed only in the 1 st region 31a of the 1 st region 31a and the 2 nd region 31 b.

As shown in fig. 6 and 9, in the present embodiment, the insertion hole 61a is a cylindrical hole provided in the cylindrical portion 61 of the insulating cover 60. The cylindrical portion 61 is formed to protrude from the surface of the insulating cover 60 on the base 30 side toward the optical member 40. Fig. 9 is a perspective view showing a part of the insulating cover 60 in an enlarged manner. As shown in fig. 9, in the present embodiment, the cylindrical portion 61 has a substantially angular tubular shape, and the cylindrical portion 61 has a substantially rectangular shape in plan view. The shape of the cylindrical portion 61 is not limited to a rectangular cylinder, and may be a cylinder.

As shown in fig. 6, the portion on the 2 nd region 31b side is higher than the portion on the 1 st region 31a side in the opening portion on the optical member 40 side (upper side in fig. 6) of the insertion hole 61 a. Specifically, as shown in fig. 9, the height of the cylindrical portion 61 from the surface of the insulating cover 60 on the base 30 side is locally different, and as shown in fig. 6, the height of the cylindrical portion 61 on the 2 nd region 31b side is higher than the height of the cylindrical portion 61 on the 1 st region 31a side. That is, at the opening portion of the tube 61 on the optical member 40 side, the portion on the 2 nd region 31b side protrudes from the portion on the 1 st region 31a side. As shown in fig. 9, in the present embodiment, in the cylindrical portion 61 having an angular tubular shape, the height of 1 of the 4 side walls is higher.

As shown in fig. 6, the tubular portion 61 of the insulating cover 60 penetrates the through-hole 34 of the base 30. That is, the insulating cover 60 is disposed on the power supply portion 50 side of the base 30 in a state where the tubular portion 61 penetrates the through hole 34 of the base 30. The cylindrical portion 61 protrudes from the substrate 11 of the 1 st light emitting portion 10 and the substrate 21 of the 2 nd light emitting portion 20. That is, the opening end surface of the tube 61 on the optical member 40 side is located closer to the optical member 40 side than the surfaces of the substrate 11 and the substrate 21. Further, in the present embodiment, the tube 61 protrudes from the upper surface of the 1 st holder 70 for holding the 1 st light emitting part 10. Thus, the insulating cover 60 is disposed such that the cylindrical portion 61 protrudes from the 1 st holder 70.

As shown in fig. 10 and 11, the pair of power lines 131 and 132 are inserted into the insertion hole 61a of the tube 61 penetrating into the through hole 34 of the base 30. Fig. 10 is a perspective view showing the cylindrical portion 61 of the insulating cover 60 and the peripheral portion of the cylindrical portion 61 in a state where the pair of power lines 131 and the pair of power lines 132 are not inserted into the insertion hole 61a, and fig. 11 is a perspective view showing the cylindrical portion 61 and the peripheral portion of the cylindrical portion 61 in a state where the pair of power lines 131 and the pair of power lines 132 are inserted into the insertion hole 61 a.

As shown in fig. 11, the conductive portion inserted into one end of the pair of power lines 131 in the insertion hole 61a is connected to the pair of terminals 11a of the substrate 11 of the 1 st light emitting portion 10. The conductive portion inserted into one end of the pair of power lines 132 in the insertion hole 61a is connected to the pair of terminals 21a of the substrate 21 of the 2 nd light emitting portion 20.

Although not shown, the insertion hole 61a of the tube 61 is injection molded with a resin material such as silicone resin in a state where the pair of power lines 131 and the pair of power lines 132 are inserted. For example, after the pair of electric wires 131 and 132 are inserted into the insertion hole 61a of the tube 61, the insertion hole 61a is injection-molded by applying liquid silicone. This can block the insertion hole 61a with silicone, so that invasion of insects from the power supply unit 50 side to the 1 st light emitting unit 10 side (the 2 nd light emitting unit 20 side) through the insertion hole 61a can be suppressed. That is, the entrance of insects into the space region between the optical member and the 1 st light emitting portion 10 and the 2 nd light emitting portion 20 can be suppressed. Thus, it is possible to suppress that, after the LED lamp 1 is mounted to the lighting fixture, insects (or dead debris of insects) exist on the inner surface of the optical member 40 to appear as a black spot across the optical member 40.

As shown in fig. 5 and 6, the insulating cover 60 is provided with a recess 62a, and the recess 62a accommodates a screw leg of the screw 121 penetrating the screw hole 33a of the base 30. This can prevent occurrence of a defect in the power supply unit 50 due to the leg of the screw 121. As shown in fig. 6, the insulating cover 60 is provided with a recess 62b, and the recess 62b accommodates a screw leg of the screw 122 penetrating the screw hole 33b of the base 30. This can prevent occurrence of a defect in the power supply unit 50 due to the leg of the screw 122.

The power supply portion 50 is held by the 2 nd holder 80. The 2 nd holder 80 is a circuit holder that holds the power supply portion 50 constituting the power supply circuit. Specifically, the end of the circuit board 51 is locked by the locking claw 81 (see fig. 3) provided in the 2 nd holder 80, and the power supply unit 50 is held by the 2 nd holder 80. The 2 nd holder 80 is made of an insulating resin material such as polybutylene terephthalate (PBT). In the present embodiment, the 2 nd holder 80 is a frame body configured in a frame shape. The 2 nd retainer 80 is located between the bottom 103 of the housing 100 and the heat sink 90. The 2 nd holder 80 is provided with an insertion hole through which the pin 110 is inserted.

The heat sink 90 shown in fig. 3 and 5 is a heat radiating member that radiates heat generated by the 1 st light emitting unit 10 and the 2 nd light emitting unit 20, and is thermally coupled to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. Accordingly, the heat sink 90 may be made of a metal material or a resin material having high thermal conductivity in order to efficiently dissipate heat generated by the 1 st light emitting portion 10 and the 2 nd light emitting portion 20. In the present embodiment, the heat sink 90 is composed of aluminum. As shown in fig. 5, the heat sink 90 surrounds the power supply unit 50 and has a function of dissipating heat generated by the power supply unit 50. The heat sink 90 is disposed within the housing 100. Specifically, the heat sink 90 is placed on the bottom 103 of the housing 100. The heat sink 90 is formed in a frame shape having an L-shaped cross section.

As shown in fig. 5 and 6, the case 100 is a case that houses the power supply unit 50, the 2 nd holder 80, and the heat sink 90. As shown in fig. 3 and 5, the case 100 has a substantially bottomed tubular shape having an opening 101, and has a side wall 102 and a bottom 103.

As shown in fig. 5, the opening 101 of the housing 100 is closed by the base 30. The opening 101 is covered with the optical member 40. The side wall 102 of the housing 100 is cylindrical and is erected on the bottom 103.

As shown in fig. 1 and 5, the bottom 103 of the housing 100 is formed to have a step. Specifically, the bottom 103 is formed such that the center portion protrudes outward in a cylindrical shape. As shown in fig. 5 and 6, the 2 nd holder 80 is placed on the bottom 103. As shown in fig. 5, the bottom 103 is provided with an insertion hole through which the pin 110 is inserted. Since the pins 110 are two, two of the insertion holes are provided.

The case 100 is made of a resin material such as polybutylene terephthalate (PBT) or a metal material such as aluminum. In the present embodiment, the case 100 is an insulating case made of PBT. This makes it easy to ensure the insulation of the power supply unit 50. That is, the case 100 is an outer cover that constitutes the outer periphery of the LED lamp 1, and also functions as an insulating cover that covers the power supply unit 50.

The pins 110 are conductive lamp pins (base pins), and have a function of receiving power for causing the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 to emit light from the outside of the LED lamp 1. For example, AC power (e.g., AC power from a commercial power supply of AC 100V) is received from a lamp socket of a lighting fixture by a pair of pins 110. The pins 110 are electrically connected to the power supply unit 50, and the power received by the pins 110 is supplied from the power supply unit 50. In the present embodiment, the pins 110 are provided in two pairs. A pair of pins 110 are disposed in opposed positions. As shown in fig. 5, each pin 110 is inserted through an insertion hole provided in the bottom 103 of the housing 100 and an insertion hole provided in the 2 nd holder 80, and is fixed to the housing 100.

One end of each pin 110 is located inside the case 100 and electrically connected to the power supply unit 50. The other end of each pin 110 is exposed outside the housing 100, and is electrically connected to a conductive portion of a socket of the lighting fixture when the LED lamp 1 is mounted on the socket. Thus, the pins 110 also function as mounting portions for mounting the LED lamp 1 to the lighting fixture. The LED lamp 1 is held to the lighting fixture by mounting a pair of pins 110 to a lamp socket of the lighting fixture.

In the LED lamp 1 configured as described above, the illumination light can be irradiated in a plurality of modes by selectively controlling the turning on and off of each of the 1 st light emitting unit 10 and the 2 nd light emitting unit 20.

Specifically, as shown in fig. 12, the LED lamp 1 is set to the light-collecting mode by turning on the 1 st light-emitting unit 10 and turning off the 2 nd light-emitting unit 20 (when only the 1 st light-emitting unit 10 is turned on), and the LED lamp 1 emits the collected illumination light.

In the condensing mode of fig. 12, most of the light emitted from the 1 st light emitting portion 10 is transmitted through the 1 st light transmitting portion 41 of the optical member 40 and is emitted from the optical member 40 to the outside. At this time, the light emitted from the 1 st light emitting portion 10 is refracted by the 1 st light transmitting portion 41 as a fresnel lens and focused. Thus, the light transmitted through the 1 st light transmitting portion 41 and emitted to the outside is condensed to become condensed light.

In the present embodiment, the color temperature of the light of the 1 st light emitting unit 10 is 5000K which is diurnal white. Therefore, in the condensed mode, the light of the 1 st light emitting unit 10 having a condensed color temperature of 5000K can make the bright and dark atmosphere of the illumination space (room or the like) a natural feeling.

On the other hand, as shown in fig. 13, by turning on the 2 nd light emitting unit 20 and turning off the 1 st light emitting unit 10 (in the case where only the 2 nd light emitting unit 20 is turned on), the LED lamp 1 is put into the diffusion mode, and the diffused illumination light is irradiated from the LED lamp 1.

In the diffusion mode of fig. 13, most of the light emitted from the 2 nd light emitting portion 20 is transmitted through the 2 nd light transmitting portion 42 of the optical member 40 and is emitted from the optical member 40 to the outside. At this time, the light emitted from the 2 nd light emitting portion 20 is diffused by the 2 nd light transmitting portion 42 having a diffusion function. Thus, the light transmitted through the 2 nd light transmitting portion 42 and emitted to the outside is diffused to be divergent light. Therefore, the light distribution angle of the light of the 2 nd light emitting portion 20 transmitted through the 2 nd light transmitting portion 42 is larger than the light distribution angle of the light of the 1 st light emitting portion 10 transmitted through the 1 st light transmitting portion 41. That is, the light distribution angle of the 1 st light emitting unit 10 after transmitting the 1 st light transmitting unit 41 is smaller than the light distribution angle of the 2 nd light emitting unit 20 after transmitting the 2 nd light transmitting unit 42.

In the present embodiment, the color temperature of the light of the 2 nd light emitting portion 20 is 2700K of the bulb color. Thus, in the diffusion mode, the diffused light of the 2 nd light emitting portion 20 having a color temperature of 2700K can bring comfort to a person present in the illumination space.

In this way, the LED lamp 1 can emit illumination light in both the condensing mode (fig. 12) and the diffusing mode (fig. 13) by switching on and off the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. Thereby, different lighting environments can be realized by 1 LED lamp 1.

Specifically, the light distribution of the illumination light can be switched by switching the lighting of the 1 st light emitting unit 10 and the 2 nd light emitting unit 20. Therefore, the light distribution of the illumination light can be changed without replacing the LED lamp 1, and thus the light-dark atmosphere of the illumination space can be changed. In the present embodiment, not only the light distribution of the illumination light but also the color temperature of the illumination light can be switched simultaneously with the light distribution. That is, the light distribution and color temperature of the illumination light can be changed without replacing the LED lamp 1.

In the present embodiment, when the LED lamp 1 is irradiated with illumination light, one of the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 is turned off when the other is turned on, and the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are exclusively switched, but the present invention is not limited thereto. For example, there may be a mode in which the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are simultaneously turned on. When the LED lamp 1 is not irradiated with illumination light, both the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 are turned off. The on and off of the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 may be controlled by an infrared remote controller and/or a smart phone. In this case, the LED lamp 1 has a receiving unit that receives an infrared signal from an infrared remote controller and/or a wireless module that receives a wireless signal from a smart phone.

As described above, the LED lamp 1 according to the present embodiment includes: a 1 st light emitting unit 10; a 2 nd light emitting unit 20; a base 30 having a 1 st surface 31 as a disposition surface including a 1 st region 31a in which the 1 st light emitting portion 10 is disposed and a 2 nd region 31b in which the 2 nd light emitting portion 20 is disposed; an optical member 40 having a 1 st light-transmitting portion 41 through which light of the 1 st light-emitting portion 10 is transmitted and a 2 nd light-transmitting portion 42 through which light of the 2 nd light-emitting portion 20 is transmitted; and a power supply unit 50 for supplying power to the 1 st light emitting unit 10 and the 2 nd light emitting unit 20; the insertion hole 61a through which the power lines 131 and 132 are inserted is present in the 1 st region 31a in plan view.

In this way, since the insertion holes 61a through which the power lines 131 and 132 are inserted are present in the 1 st region 31a of the 1 st surface 31 of the base 30, the proportion of the insertion holes 61a can be reduced in the 2 nd region 31b of the 1 st surface 31 of the base 30. This can improve the degree of freedom in layout of the plurality of LED packages 22 included in the 2 nd light emitting portion 20 arranged in the 2 nd region 31b of the 1 st surface 31. Thus, the plurality of LED packages 22 included in the 2 nd light emitting portion 20 can be uniformly arranged. For example, since all the LED packages 22 of the 2 nd light emitting portion 20 can be easily arranged at equal intervals over the entire circumference, the luminance uniformity on the light emitting surface of the optical member 40 when the 2 nd light emitting portion 20 is lighted can be improved.

In the LED lamp 1 according to the present embodiment, the portion on the 2 nd region 31b side is higher than the portion on the 1 st region 31a side in the opening portion on the optical member 40 side of the insertion hole 61 a.

With this structure, the resin material that blocks the insertion hole 61a can be prevented from protruding to the 2 nd region 31b side. This can prevent the resin material that has blocked the insertion hole 61a from being caught by the LED package 22 of the 2 nd light emitting portion 20 disposed in the 2 nd region 31 b.

In the LED lamp 1 according to the present embodiment, the insertion hole 61a is provided in the insulating cover 60 disposed between the base 30 and the power supply unit 50. Specifically, the insertion hole 61a is a cylindrical hole provided in the cylindrical portion 61 of the insulating cover 60.

With this configuration, the power lines 131 and 132 inserted into the insertion hole 61a can be protected by the tube portion 61 of the insulating cover 60, so that breakage or breakage of the power lines 131 and 132 at the edge or the like of the through hole 34 of the base 30 can be suppressed. Further, by inserting the power lines 131 and 132 into the tube portion 61 of the insulating cover 60, the line engagement of the power lines 131 and 132 can be suppressed. For example, the power lines 131 and 132 can be suppressed from being sandwiched between the base 30 and the 1 st light emitting portion 10 or the 2 nd light emitting portion 20 or between the base 30 and the insulating cover 60.

In the LED lamp 1 according to the present embodiment, the tubular portion 61 of the insulating cover 60 penetrates the through-hole 34 provided in the 1 st region 31a of the base 30.

With this configuration, the line engagement of the power lines 131 and 132 can be further suppressed. In particular, the power lines 131 and 132 can be prevented from being sandwiched between the base 30 and the insulating cover 60. Further, by making the cylindrical portion 61 protrude from the substrate 11 of the 1 st light-emitting portion 10 and the substrate 21 of the 2 nd light-emitting portion 20, the electric lines of force 131 and 132 can be reliably prevented from being sandwiched between the base 30 and the 1 st light-emitting portion 10 or the 2 nd light-emitting portion 20.

In the LED lamp 1 according to the present embodiment, the 2 nd light emitting unit 20 includes a substrate 21 and a plurality of LED packages 22 arranged on the substrate 21. As shown in fig. 14, the plurality of LED packages 22 of the 2 nd light emitting unit 20 are arranged in the vicinity of the insertion hole 61a so as to be line-symmetrical with respect to a straight line L passing through the center of the LED lamp 1 and the center of the insertion hole 61a in a plan view.

With this structure, the resin material that has blocked the insertion hole 61a can be further prevented from being caught by the LED package 22 of the 2 nd light emitting portion 20 arranged in the 2 nd region 31 b.

As shown in fig. 14, in the LED lamp 1 according to the present embodiment, the power line 132 passing through the insertion hole 61a is connected to the substrate 21 at a portion between two adjacent LED packages 22 among the plurality of LED packages 22 in the substrate 21 of the 2 nd light emitting portion 20. In this case, as shown in fig. 14, a plurality of LED packages 22 may be arranged between the 1 st connection portion P1, which is a connection portion between one of the pair of power lines 132 and the substrate 21, and the 2 nd connection portion P2, which is a connection portion between the other of the pair of power lines 132 and the substrate 21.

With this configuration, the plurality of LED packages 22 included in the 2 nd light emitting unit 20 can be more uniformly arranged.

Further, the plurality of LED packages 22 arranged between the 1 st connection portion P1 and the 2 nd connection portion P2 may be arranged symmetrically with respect to a straight line L passing through the center of the LED lamp 1 and the center of the insertion hole 61 a. Further, the 1 st connecting portion P1 and the 2 nd connecting portion P2 may be arranged line-symmetrically with respect to the straight line L.

In the LED lamp 1 according to the present embodiment, the 2 nd light emitting portion 20 is located outside the 1 st light emitting portion 10.

With this structure, the degree of freedom in layout of the plurality of LED packages 22 included in the 2 nd light emitting portion 20 arranged in the outer region can be improved.

In the LED lamp 1 according to the present embodiment, the 1 st light transmitting portion 41 of the optical member 40 condenses the light of the 1 st light emitting portion 10, and the 2 nd light transmitting portion 42 of the optical member 40 diffuses the light of the 2 nd light emitting portion 20.

With this configuration, the degree of freedom in layout of the plurality of LED packages 22 included in the 2 nd light emitting unit 20 that emits light that is diffused by transmitting the 2 nd light transmitting unit 42 can be improved.

(Modification)

The lighting device and the like according to the present utility model have been described above based on the embodiments, but the present utility model is not limited to the above embodiments.

For example, in the above embodiment, 4 power lines, that is, the pair of power lines 131 and the pair of power lines 132, are inserted into the 1 insertion hole 61a, but the present invention is not limited thereto. Specifically, a plurality of insertion holes 61a may be provided, and a pair of power lines 131 and a pair of power lines 132 may be inserted into the plurality of insertion holes 61a, respectively.

In the above embodiment, the 1 st light emitting unit 10 is a COB type LED module, and the 2 nd light emitting unit 20 is an SMD type LED module, but the present invention is not limited thereto. For example, the 1 st light emitting unit 10 may be an SMD type LED module, and the 2 nd light emitting unit 20 may be a COB type LED module. In this case, the insertion hole 61a is present in the 1 st region 31a of the 1 st surface 31, and thus the degree of freedom in layout of the plurality of LED chips (light sources) included in the LED light emitting section of the 2 nd light emitting section 20 can be improved. Further, both the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 may be an SMD type LED module, or both the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 may be COB type LED modules. In the case where the 2 nd light emitting unit 20 disposed outside the 1 st light emitting unit 10 is a COB type LED module, a plurality of LED chips may be disposed on the substrate 21 in a circular ring shape, and a phosphor-containing resin for sealing the plurality of LED chips together may be formed in a circular ring shape. In addition, in the case where the 1 st light emitting section 10 located inside the 2 nd light emitting section 20 is made into an SMD type LED module, a plurality of LEDs may be densely packed in the center.

In the above embodiment, the 1 st light transmitting portion 41 and the 2 nd light transmitting portion 42 are integrally formed as the optical member 40, but the present invention is not limited thereto. For example, the 1 st light transmitting portion 41 and the 2 nd light transmitting portion 42 may be configured separately. In this case, the optical member 40 may be configured by connecting the 1 st light transmitting portion 41 as the 1 st optical member and the 2 nd light transmitting portion 42 as the 2 nd optical member.

In the above embodiment, the 1 st light transmitting portion 41 is configured to have an optical function of condensing transmitted light, and the 2 nd light transmitting portion 42 is configured to have an optical function of diffusing transmitted light, but the present invention is not limited thereto. For example, the 1 st light transmitting portion 41 may be configured to have an optical function of diffusing transmitted light, and the 2 nd light transmitting portion 42 may be configured to have an optical function of condensing transmitted light. In addition, one or both of the 1 st light transmission portion 41 and the 2 nd light transmission portion 42 may not have an optical function. In this case, a lens member that imparts an optical effect to the light emitted from the 1 st light emitting unit 10 and the 2 nd light emitting unit 20 may be separately provided or not provided.

In the above embodiment, the LED is configured to emit white light by the blue LED chip and the phosphor-containing resin containing the yellow phosphor, but the LED is not limited thereto. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used, and the resin may be combined with a blue LED chip to emit white light. In addition, for the purpose of improving the color rendering property, a red phosphor or a green phosphor may be mixed in addition to the yellow phosphor. Further, an LED chip that emits light of a color other than blue may be used, and for example, an ultraviolet LED chip that emits ultraviolet light having a wavelength shorter than that of blue light emitted from the blue LED chip may be used, and white light may be emitted from blue, green, and red phosphors that are excited mainly by ultraviolet light and emit blue, red, and green light.

In the above embodiment, one or both of the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20 may be configured to be capable of color adjustment control. For example, by providing one or both of the 1 st light-emitting unit 10 and the 2 nd light-emitting unit 20 with a red LED that emits red light, a green LED that emits green light, and a blue LED that emits blue light, RGB control can be performed by each light-emitting unit. In this case, the power supply section 50 has a color matching control circuit. The 1 st light emitting unit 10 and the 2 nd light emitting unit 20 of the above embodiment, which have different color temperatures of the emitted light, may perform the color adjustment control.

In addition, the present disclosure also includes forms obtained by applying various modifications to the above-described embodiments, which are conceivable to those skilled in the art, or forms obtained by arbitrarily combining the constituent elements and functions of the embodiments within the scope of the present utility model. Further, the present utility model includes any combination of two or more claims from among the plurality of claims described in the claims at the time of application of the present utility model insofar as there is no technical contradiction. For example, when claims in the form of reference to the present claims are set forth in the claims at the time of application of the present utility model as a plurality of claims or a plurality of claims in such a way that all the claims above are referred to in the technical range where there is no contradiction, all combinations of claims included in the plurality of claims or the plurality of claims are also included in the present utility model.

Claims

1. An illumination device, comprising:

a 1 st light emitting unit which emits 1 st light;

A 2 nd light emitting unit for emitting 2 nd light;

A base having a placement surface including a 1 st region in which the 1 st light-emitting unit is placed and a 2 nd region in which the 2 nd light-emitting unit is placed;

An optical member that covers the 1 st light-emitting portion and the 2 nd light-emitting portion, and has a 1 st light-transmitting portion through which the 1 st light is transmitted and a2 nd light-transmitting portion through which the 2 nd light is transmitted; and

A power supply unit which is disposed on the opposite side of the base from the disposition surface and supplies power to the 1 st light emitting unit and the 2 nd light emitting unit,

The optical member is configured such that a light distribution angle of the 1 st light transmitted through the 1 st light transmitting portion is smaller than a light distribution angle of the 2 nd light transmitted through the 2 nd light transmitting portion,

In a plan view, an insertion hole through which a power line is inserted is present in the 1 st region of the arrangement surface, and the power line connects at least one of the 1 st light emitting portion and the 2 nd light emitting portion with the power supply portion.

2. A lighting device as recited in claim 1, wherein,

In the opening portion of the insertion hole on the optical member side, the portion on the 2 nd region side is higher than the portion on the 1 st region side.

3. A lighting device as recited in claim 2, wherein,

Comprises an insulating cover arranged between the base and the power supply part,

The insertion hole is provided in the insulating cover.

4. A lighting device as recited in claim 3, wherein,

The insulating cover has a protruding cylindrical portion,

The insertion hole is a cylindrical hole of the cylindrical portion.

5. A lighting device as recited in claim 4, wherein,

A through hole is provided in the 1 st region of the placement surface of the base,

The tube portion penetrates the through hole of the base.

6. A lighting device as recited in any one of claims 1-5, wherein,

At least one of the 1 st light emitting unit and the 2 nd light emitting unit is an LED module having a substrate and a plurality of LED packages arranged on the substrate,

In the LED module, the plurality of LED packages are arranged symmetrically with respect to a straight line passing through a center of the lighting device and a center of the insertion hole at least in the vicinity of the insertion hole.

7. A lighting device as recited in claim 6, wherein,

The power line passing through the insertion hole is connected to the substrate at a portion between two adjacent LED packages among the plurality of LED packages in the substrate of the LED module.

8. A lighting device as recited in claim 6, wherein,

The power line is connected to the power supply unit and the substrate of the LED module,

A plurality of the plurality of LED packages are arranged between a1 st connection portion and a 2 nd connection portion, wherein the 1 st connection portion is a connection portion between one of the pair of power lines and the substrate, and the 2 nd connection portion is a connection portion between the other of the pair of power lines and the substrate.

9. A lighting device as recited in claim 8, wherein,

The 1 st connecting portion and the 2 nd connecting portion are arranged line symmetrically with respect to the straight line.

10. A lighting device as recited in any one of claims 1-5, wherein,

The 2 nd light emitting part is located outside the 1 st light emitting part.

11. A lighting device as recited in any one of claims 1-5, wherein,

The 1 st light transmitting portion condenses the 1 st light,

The 2 nd light transmitting portion diffuses the 2 nd light.

12. The lighting device as defined in any one of claims 1 to 5, wherein said insertion hole is injection molded with a resin material in a state where said power line is inserted.

13. A lighting fixture is characterized by comprising:

the lighting device of any one of claims 1-5; and

The lighting device is detachably mounted on the appliance.