JP6664160B2 - Covers, lamps and lighting devices - Google Patents

Description

  The present invention relates to a lighting device using an LED (Light Emitting Diode), a cover used for the lighting device, and a lighting device using the lighting device. In particular, the present invention relates to a form of a cover in a lamp that is a light bulb shaped lamp and an attachment structure between the cover and a main body.

2. Description of the Related Art Conventionally, there has been disclosed a technology for widening the light distribution of a small LED lamp that uses an LED as a light source and can be replaced with a mini-krypton bulb.
Patent Literature 1 to Patent Literature 3 disclose small LED lamps aiming at widening light distribution using a light guide.

JP 2014-235802 A Japanese Patent No. 5686198 Japanese Patent No. 5178930

Patent Literature 1 discloses a technique in which processing is performed inside a globe for the purpose of increasing the light distribution.
Patent Literature 2 discloses a technique in which a globe is divided into a plurality of parts and a light distribution area is widened.
Patent Literature 3 discloses a technique of disposing a light guide material inside a globe for the purpose of broadening light distribution.
All of the techniques disclosed in Patent Documents 1 to 3 require a complicated configuration for wide light distribution, and thus have a problem that they cannot be reduced in size and weight.

  The present invention provides a cover, a lamp using the cover, and a lamp equipped with the lamp, which can obtain a wide light distribution at low cost without hindering downsizing and weight reduction by realizing a wide light distribution with a simple configuration. It is intended to provide a device.

The cover according to the present invention is a cover attached to a main body having a light source portion and an annular peripheral portion provided around the light source portion while covering the light source portion, and is configured by one component, A cover mounting portion which is formed in an annular shape with a diameter smaller than the maximum outer diameter of the cover and which is attached to the peripheral portion, and the outer periphery of the cover which forms the maximum outer diameter of a portion of the outer peripheral surface of the cover excluding the cover attaching portion from the outer peripheral surface with an annular recess formed between the parts and cover attachment portion.

  According to the cover according to the present invention, the cover mounting portion, which is formed of a single component, is formed in a ring shape with a diameter smaller than the maximum outer diameter of the cover, and is mounted on the peripheral portion of the main body portion, and the outer peripheral surface portion of the cover Since the outer peripheral surface is provided with a cover outer peripheral portion having a maximum outer diameter of a portion excluding the cover attaching portion from the outer peripheral surface portion and an annular concave portion formed between the cover attaching portion, it is difficult to reduce the size and weight of the lamp. Thus, a wide light distribution can be obtained at low cost.

FIG. 2 is an exploded perspective view of the lamp 100 according to the first embodiment. FIG. 2 is a perspective view of the lamp 100 according to the first embodiment. 3A and 3B are diagrams illustrating the lamp 100 according to Embodiment 1, wherein FIG. 3A is a plan view and FIG. 4A and 4B are diagrams showing the lamp 100 according to the first embodiment, wherein FIG. 3A is a front view, FIG. 3B is a cross-sectional view taken along line AA of FIG. 3A, and FIG. -B sectional drawing. FIG. 2 is an exploded perspective view of the internal housing 2 according to the first embodiment. 2A and 2B are diagrams illustrating the internal housing 2 according to the first embodiment, where FIG. 2A is a bottom view and FIG. FIGS. 7A and 7B are diagrams showing the internal housing 2 according to the first embodiment, wherein FIG. 6A is a front view of FIG. 6B, FIG. 6B is a right side view of FIG. 6B, and FIG. FIG. 6B is a rear view of FIG. FIGS. 8A and 8B are diagrams showing the internal housing 2 according to the first embodiment, in which FIG. 7A is a cross-sectional view taken along line DD of FIG. 7B, and FIG. 7B is a line CC of FIGS. Sectional view. FIG. 3 is a diagram showing a state where the power supply unit 5 is housed in the internal housing 2 according to the first embodiment. FIG. 2 is an exploded perspective view of the internal housing 2a according to the first embodiment. 3A and 3B are diagrams illustrating a main body unit 3 according to the first embodiment, in which FIG. 3A is a perspective view as viewed from above, and FIG. 3B is a perspective view as viewed from below. 3A and 3B are diagrams illustrating a main body unit 3 according to the first embodiment, where FIG. 3A is a plan view and FIG. 13A and 13B are diagrams illustrating the main body 3 according to the first embodiment, where FIG. 12A is a front view, FIG. 12B is a cross-sectional view taken along line E-E of FIG. 12A, and FIG. FF sectional drawing. 14A and 14B are diagrams illustrating a main body unit 3 according to the first embodiment, in which FIG. 13A is an enlarged view of a part A of FIG. 13B, and FIG. 13B is an enlarged view of a part B of FIG. FIG. 2 is a perspective view of a cover 4 according to the first embodiment. 2A and 2B are diagrams illustrating a cover 4 according to the first embodiment, wherein FIG. 2A is a plan view and FIG. 17A and 17B are diagrams illustrating the cover 4 according to the first embodiment, where FIG. 16A is a front view, FIG. 16B is a cross-sectional view taken along line DD of FIG. 16A, and FIG. -C sectional drawing. 18A and 18B are diagrams illustrating the cover 4 according to the first embodiment, wherein FIG. 17A is an enlarged view of a Q part of FIG. 17C and FIG. 17B is an enlarged view of a P part of FIG. FIG. 5 is a diagram showing the function and effect of the optical characteristics of the concave portion 410 according to the first embodiment. FIG. 4 is a light distribution characteristic diagram for explaining optical effects of the lamp 100 according to the first embodiment. FIG. 3 is a diagram showing an attachment structure between a main body 3 and a cover 4 according to the first embodiment. 5A and 5B are diagrams illustrating an attachment structure of the main body 3 and the cover 4 according to the first embodiment, wherein FIG. 4A is an enlarged view of a portion Q1 of FIG. 4C and FIG. 4B is a view of P1 of FIG. Part enlarged view. FIG. 3A is a diagram illustrating an attachment structure between the main body 3 and the cover 4 according to the first embodiment, and FIG. 2A is a cross-sectional view of the attachment structure between the main body 3 and the cover 4 cut in a circumferential direction of an axis O; () Is a cross-sectional view of the mounting structure of the main body 3 and the cover 4 taken along a plane orthogonal to the axis O. The figure which shows the illuminating device 3000a which mounted the lighting fixture 100 which concerns on Embodiment 1 to the hanging type luminaire 200. FIG. The figure which shows the illuminating device 3000b which mounted the lighting fixture 100 which concerns on Embodiment 1 to the illuminating fixture 300 of an embedded type. The figure which shows the illuminating device 3000c which mounted the lighting fixture 100 which concerns on Embodiment 1 in the lighting fixture 400 of an embedded type.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the embodiments described below. Further, in the following drawings, the relationship between the sizes of the components may be different from the actual one. In the description of the embodiments, when directions or positions such as top, bottom, left, right, front, rear, front, and back are indicated, those notations are described as such for convenience of explanation. It does not limit the arrangement, orientation, and the like of the devices, instruments, components, and the like.

Embodiment 1 FIG.
*** Explanation of the configuration of the lamp 100 ***
FIG. 1 is an exploded perspective view of a lamp 100 according to the present embodiment.
FIG. 2 is a perspective view of the lamp 100 according to the present embodiment.
3A and 3B are diagrams showing the lamp 100 according to the present embodiment, wherein FIG. 3A is a plan view and FIG. 3B is a bottom view.
4A and 4B are diagrams showing the lamp 100 according to the present embodiment, wherein FIG. 4A is a front view, FIG. 4B is a cross-sectional view taken along line AA of FIG. 3A, and FIG. It is BB sectional drawing of a).

The lamp 100 has a base 1, an inner housing 2, a main body 3, a cover 4, a power supply 5, and a light source 6.
As shown in FIG. 1, the central axis of the lamp 100 is an axis O.
The direction parallel to the axis O is called the axial direction or the direction of the arrow Z (Z direction). The one end in the axial direction refers to the upper part in FIG. The other end in the axial direction refers to the lower part in FIG.
An upward direction of the lamp 100 is referred to as an upward direction or a light emitting direction. The downward direction of the lamp 100 is referred to as a downward direction or a direction opposite to the light emitting direction. Note that the direction of the light emitted from the light source is referred to as a light emitting direction.
The direction orthogonal to the axis O is called a radial direction. As shown in FIG. 3, the direction of arrow X (X direction) and the direction of arrow Y (Y direction) are examples of the radial direction. Further, the direction rotating around the axis O is referred to as a circumferential direction.
The lamp 100 is, specifically, a mini-krypton-type small light bulb using an LED as a light source.

As shown in FIG. 4A, the lamp 100 according to the present embodiment aims at wide light distribution, and therefore, it is desirable that the boundary between the main body 3 and the cover 4 be provided as close to the base 1 as possible. .
Specifically, the ratio of the height dimension (L6 + L7 + L8 + L9 + D1) of the cover 4 to the longitudinal dimension L1 of the lamp 100 is 37% to 43%. In particular, 39% to 41% is desirable.

<Description of base 1>
The base 1 is specifically a base of E17. The base 1 is screwed into a screw portion 210 at a lower portion of the internal housing 2 and attached to the internal housing 2.
As shown in FIGS. 1 to 4, the base 1 includes a screw portion 10 that is screwed into the screw portion 210 of the inner housing 2, an eyelet portion 12 at a lower end portion of the base 1, and an eyelet formed from the eyelet portion 12 to the inside of the base. It has a hole 13. The base 1 is also referred to as a power receiving unit that receives power from a socket 201 of the lighting fixture 200 described below. In addition, the base 1 has a function as a shell of the lamp 100.

<Description of Internal Cases 2 and 2a>

FIG. 5 is an exploded perspective view of the inner housing 2 according to the present embodiment.
FIGS. 6A and 6B are views showing the inner housing 2 according to the present embodiment, wherein FIG. 6A is a bottom view and FIG. 6B is a plan view.
7A and 7B are views showing the inner housing 2 according to the present embodiment, in which FIG. 7A is a front view of FIG. 6B, FIG. 7B is a right side view of FIG. FIG. 7C is a rear view of FIG.
FIGS. 8A and 8B are views showing the inner housing 2 according to the present embodiment, wherein FIG. 8A is a cross-sectional view taken along the line DD of FIG. 7B, and FIG. 8B is a sectional view of FIGS. It is CC sectional drawing of.
FIG. 9 is a diagram showing a state where power supply unit 5 is housed in internal housing 2 according to the present embodiment.
FIG. 10 is an exploded perspective view of the inner housing 2a according to the present embodiment.

The internal housings 2 and 2a will be described with reference to FIGS.
The internal housing 2 is formed of an insulating material such as a resin.
The internal housing 2 is also called an insulating housing, a resin housing, or a housing.
The inner housing 2 may be formed by using an additive manufacturing technology (generally referred to as a 3D printer) in addition to the injection molding method.

The internal housing 2 has a cylindrical tubular part 20 having an outer peripheral part 21 and an inner peripheral part 22, and a lid part 25 for closing an upper part of the cylindrical part 20.
The cylindrical portion 20 and the lid portion 25 are formed of an insulating material such as a resin.

A screw portion 210 into which the base 1 is screwed is formed below the outer peripheral portion 21 of the cylindrical portion 20.
A screw is cut on the outer periphery of the screw portion 210.
A first opening end 23 is formed at the lower end of the screw portion 210, that is, at the base 1 side.
A second opening end 24 is formed at the upper end of the cylindrical portion 20, that is, on the light source 6 side.
The first open end 23 communicates with the second open end 24.

The outer peripheral portion 21 of the cylindrical portion 20 includes an insertion guide convex portion 212 serving as a guide when the internal housing 2 is inserted into the main body portion 3, and a flange portion 211 locked at a lower portion of the main body portion 3.
The flange 211 of the inner housing 2 is exposed between the main body 3 and the base 1.
The flange portion 211 is formed at the boundary between the outer peripheral portion 21 and the screw portion 210 so as to protrude annularly from the outer peripheral portion 21. The flange 211 is an outer shell of the lamp 100.
As shown in FIGS. 8A and 8B, the flange portion 211 is provided between the lower end portion and the upper end portion of the screw portion 210 in order to realize high fixture mounting property and design of the lamp 100. It is formed with a curved surface. Specifically, Rp = approximately 1.9 mm is preferable.

  The screw portion 210 of the outer peripheral portion 21 has an electric wire arrangement groove 213 formed by cutting a threaded portion in the axial direction. The electric wire arrangement groove 213 has an electric wire arranged in the groove portion.

The second opening end 24 is provided with a rib 221 in which a screw hole 222 for screwing the light source unit 6 and the lid unit 25 is formed. Ribs are also called bosses.
As shown in FIGS. 6B and 8A, the first convex portion 223 and the second convex portion 224 are formed on the inner peripheral portion 22 with the rib 221 interposed therebetween. The first convex portion 223 and the second convex portion 224 have different lengths in the axial direction, and have different upper end portions. By forming the first protrusion 223 and the second protrusion 224 in this way, the insertion position and the insertion direction of the lighting circuit board 50 of the power supply unit 5 are specified. The first protrusion 223 and the second protrusion 224 are guides for specifying an insertion position and an insertion direction of the lighting circuit board 50 of the power supply unit 5. The first protrusion 223 and the second protrusion 224 are formed according to the outer shape of the lighting circuit board 50.

The lid 25 is attached so as to cover the second opening end 24 of the cylinder 20.
The lid portion 25 is formed with a screw through portion 26 through which the rib 221 of the cylindrical portion 20 is penetrated and a screw is passed, and a wire through hole 27 through which the wire is passed.
As the thickness dimension D3 (see FIG. 10) of the lid section 25, a dimension that maintains electrical insulation between the power supply section 5 and the light source arrangement section 30 is selected. In addition, due to a demand for downsizing the lamp 100, the thickness D3 of the lid 25 must be equal to or less than the protrusion L15 (see FIG. 8B) of the rib 221 protruding from one end of the cylindrical portion 20. Is preferred.

FIG. 10 shows an internal housing 2a having a different lid. The inner housing 2a includes a lid 25a in which a screw penetration 26a having a shape different from that of the lid 25 is formed. The screw penetration part 26a of the lid part 25a is notched to the periphery of the lid part 25a.
Note that the shapes of the screw through portions 26 and 26a and the electric wire through holes 27 need not be the shapes shown in FIG. 5 or FIG. 10, and may be other shapes.

<Description of power supply unit 5>
The power supply section 5 is housed in the housing section 220 of the cylindrical internal housing 2.
The power supply unit 5 has a lighting circuit board 50. As shown in FIG. 4B, power is supplied from the base 1 to the power supply unit 5 through the first wire pair 8 to turn on the light source unit 6. The power supply unit 5 is also referred to as a lighting circuit for driving the light source unit 6 and a driving circuit. The first wire pair 8 is also called an external power input line.

The lighting circuit board 50 has a long shape, and is disposed in the housing portion 220 of the internal housing 2 such that the longitudinal direction is along the central axis OO of the lamp 100.
As shown in FIG. 9, the lighting circuit board 50 is held by the inner peripheral portion 22 of the inner casing 2 and the rib 221 projecting inward from the inner peripheral portion 22 on both longitudinal sides on the light source section 6 side.
The outer shape of the lighting circuit board 50 in the longitudinal direction is formed along the inner peripheral portion 22 of the inner housing 2. The width dimension on the side of the base 1 is formed smaller than the width dimension W16 on the side of the light source section 6, and the longitudinal side portions are formed so that the width changes at different positions in the longitudinal direction.

The change in the width at both longitudinal sides of the lighting circuit board 50 corresponds to the shape of the first convex portion 223 and the second convex portion 224 formed on the inner peripheral portion 22 of the internal housing 2. The first protrusion 223 and the second protrusion 224 guide the insertion of the lighting circuit board 50 so that the insertion position and the insertion direction (front and back) of the lighting circuit board 50 are not reversed. Even if it is attempted to insert the lighting circuit board 50 in the opposite direction, the lighting circuit board 50 remains in an incompletely inserted state in the accommodating portion 220, so that it is easy to confirm the orientation of the lighting circuit board 50 in the assembling work, and it is possible to improve manufacturing quality and manufacturing efficiency. it can.
Note that the number of lighting circuit boards 50 need not be one. The lighting circuit board 50 may be divided into a plurality.

<Description of main body 3>
FIGS. 11A and 11B are views showing the main body 3 according to the present embodiment, wherein FIG. 11A is a perspective view seen from above, and FIG. 11B is a perspective view seen from below.
FIGS. 12A and 12B are diagrams showing the main body 3 according to the present embodiment, wherein FIG. 12A is a plan view and FIG. 12B is a bottom view.
13A and 13B are diagrams showing the main body 3 according to the present embodiment, wherein FIG. 13A is a front view, FIG. 13B is a cross-sectional view taken along line EE of FIG. 12A, and FIG. It is FF sectional drawing of (a).
FIGS. 14A and 14B are diagrams showing the main body 3 according to the present embodiment, in which FIG. 14A is an enlarged view of a part A of FIG. 13B, and FIG. 14B is an enlarged view of a part B of FIG. It is.

The configuration of the main body 3 will be described with reference to FIGS. 1 to 4 and FIGS. 11 to 14.
The main body 3 has a light source arrangement part 30 in which the light source part 6 is arranged, and an annular peripheral part 33 provided around the light source arrangement part 30 in a direction opposite to the light emission direction of the light source part 6.

The light source arranging part 30 is an upper surface part of the main body part 3, and the light source part 6 is attached in a state where the heat transfer part 62 which is the back surface of the light source circuit board 60 is in contact with the light source arranging part 30.
Further, the main body 3 includes a cylindrical portion 36 that houses the internal housing 2 therein. The internal housing 2 is inserted from the opening end 365 at the lower part of the cylindrical portion 36. The tubular portion 36 has a function of an outer portion of the lamp 100.
The cylindrical portion 36 is connected to the peripheral portion 33 and includes a conical portion 361 whose diameter gradually decreases downward from the peripheral portion 33 and a cylindrical cylindrical portion 360 formed below the conical portion 361. Prepare. The lower end of the cylindrical portion 360 becomes the opening end 365.
The cylindrical portion 36 includes an outer peripheral portion 362 which is an outer peripheral surface, and an inner peripheral portion 363 which is an inner peripheral surface. An insertion guide recess 364 that is a recess is formed in the inner peripheral portion 363. The insertion guide concave portion 364 engages with the insertion guide convex portion 212 of the internal housing 2 to guide the insertion of the internal housing 2 into the cylindrical portion 36.

The main body 3 is formed of a material such as a metal having thermal conductivity, and is also referred to as an external housing, a heat conductive housing, and a heat radiating unit.
The main body 3 has a function of stably maintaining the form as the outer shell of the lamp 100 and a function of dissipating operating heat generated from the light source element 67 of the light source unit 6 to the outside of the lamp 100. The material of the main body 3 is desirably a metal material such as aluminum or titanium when giving priority to material cost and moldability. Alternatively, an alloy material containing these metals, a resin material mixed with a thermally conductive filler, ceramic, or the like can be used.
Further, the main body 3 may be formed by using an additive manufacturing technology in addition to the injection molding method and the cutting method.

The light source arranging portion 30 has a mounting surface portion 37 that contacts the light source circuit board 60 of the light source portion 6.
When the light source unit 6 is attached to the light source placement unit 30, the screw through hole 31 communicating with the screw through hole 65 of the light source circuit board 60, and the wire through hole communicating with the wire insertion hole 66 of the light source circuit board 60. 32 are formed.
The shape of the screw through hole 65 and the electric wire insertion hole 66 of the light source circuit board 60 and the shape of the screw through hole 31 and the electric wire through hole 32 of the light source disposing portion 30 need not be the shapes shown in FIG. 1, FIG. 11, or FIG. Well, other forms are acceptable.

The peripheral part 33 is provided in a direction opposite to the light emission direction of the light source part 6 from around the light source arrangement part 30. The peripheral portion 33 is a main body attaching portion for attaching the cover 4 to the main body 3.
The peripheral portion 33 includes an annular peripheral wall portion 34 provided in a direction opposite to the light emission direction from the periphery of the light source disposing portion 30, an annular bottom surface portion 35 protruding from the root of the peripheral wall portion 34, and at least a part of the peripheral wall portion 34. And a mounting projection 340 projecting from Further, the mounting projection 340 has an opposing portion 343 (see FIG. 14) opposing the bottom surface portion 35. The peripheral portion 33 has a groove 350 in a part of the bottom surface 35.

The peripheral wall portion 34 is an annular wall portion formed downward from the periphery of the light source disposition portion 30.
As shown in FIG. 12A, the mounting protrusions 340 are provided at four positions on the peripheral wall portion 34 at equal intervals. Note that the mounting position of the mounting protrusion 340 and the number of the mounting protrusions 340 are not limited to FIG. The number of the peripheral wall portion 34 may be two, three, or four or more. Also, the intervals need not be equal.
Further, between two adjacent mounting projections 340, an installation guide portion 344 that guides the mounting of the cover 4 to the peripheral portion 33 is formed. In the present embodiment, four mounting projections 340 are formed.

  As shown in FIG. 14A, the mounting guide portion 344 includes an inclined portion 345 continuously inclined downward from the light source disposition portion 30 and an outer periphery formed substantially vertically downward from a lower end portion of the inclined portion 345. A portion 346. The outer peripheral portion 346 may be inclined so as to substantially spread downward. In this case, the inclination angle of the outer peripheral portion 346 is sufficiently smaller than the inclination angle of the inclined portion 345.

The groove 350 formed in the bottom surface 35 is formed in the mounting guide 344 on the bottom surface 35.
As shown in FIG. 12A and FIG. 14A, the groove 350 includes an inner peripheral portion 351, an outer peripheral portion 352, a bottom portion 353, and both side end portions 354. The side ends 354 on both sides are referred to as side ends 354a and 354b.

As shown in FIG. 14B, the mounting projection 340 includes an inclined portion 341 that is inclined downward continuously from the light source disposition portion 30 and an outer periphery formed substantially vertically downward from the lower end of the inclined portion 341. And a facing portion 343 formed from the lower end of the outer peripheral portion 342 toward the inside of the main body 3 to the peripheral wall portion 34.
The facing portion 343 faces the bottom surface portion 35. The facing portion 343 is also referred to as a locking portion for locking the cover 4.

<Description of Light Source 6>
The light source unit 6 is attached to the light source arrangement unit 30 of the main body unit 3.
The light source section 6 includes a light source circuit board 60 and a light source element 67 mounted on the mounting section 61 which is a mounting surface of the light source circuit board 60. The light source element 67 is, specifically, an LED. Further, a screw through hole 65 is formed in the light source circuit board 60, and is attached to the main body 3 using the screw 7. The light source unit 6 is fixed to the light source placement unit 30 in a state where the heat transfer unit 62 on the back surface of the mounting unit 61 of the light source circuit board 60 and the light source placement unit 30 are in contact with each other.
Further, the light source circuit board 60 is formed with an electric wire insertion hole 66 through which an electric wire connected to the power supply unit 5 is inserted.

  As shown in FIG. 1, the screw 7 penetrates the screw through hole 65 of the light source circuit board 60, the screw through hole 31 of the light source disposing portion 30, and the screw through portion 26 of the lid 25, and is provided on the rib 221. Screwed into hole 222. The light source 6, the main body 3, the lid 25 of the internal housing 2, and the cylinder 20 are integrally fixed by the screws 7.

  The second wire pair 9 shown in FIG. 9 penetrates through the wire through hole 27 of the lid 25, the wire through hole 32 of the light source placement unit 30, and the wire insertion hole 66 of the light source circuit board 60. 61 is electrically connected. The second wire pair 9 is electrically connected to the mounting portion 61 by soldering, welding, crimping using an anisotropic conductive sheet, a connector, or the like. The second wire pair 9 is also called a lighting power output line.

<Description of cover 4>
FIG. 15 is a perspective view of the cover 4 according to the present embodiment.
FIG. 16 is a diagram showing the cover 4 according to the present embodiment, wherein (a) is a plan view and (b) is a bottom view.
17A and 17B are diagrams showing the cover 4 according to the present embodiment, wherein FIG. 17A is a front view, FIG. 17B is a cross-sectional view taken along line DD of FIG. 16A, and FIG. It is CC sectional drawing of a).
FIGS. 18A and 18B are diagrams showing the cover 4 according to the present embodiment, in which FIG. 18A is an enlarged view of a Q part of FIG. 17C, and FIG. 18B is an enlarged view of a P part of FIG. is there.
FIG. 19 is a diagram illustrating the function and effect of the optical characteristics of the concave portion 410 according to the present embodiment.
FIG. 20 is a light distribution characteristic diagram illustrating an optical effect of the lamp 100 according to the present embodiment.

The configuration of the cover 4 will be described with reference to FIGS. 1 to 4 and FIGS.
The cover 4 is a light-transmitting cover composed of one component. The cover 4 is attached to the main body 3 while covering the light source 6. The cover 4 is formed using a resin material having a lower thermal conductivity than the main body 3.
In the lamp 100 according to the present embodiment, since the cover 4 occupies a large portion of the outer shell, it is assumed that the user grips the cover 4 when attaching or detaching the lamp 100 to or from the lighting fixture 200. The cover 4 is formed using a resin material having a lower thermal conductivity than the main body 3. Therefore, even if the user touches the lamp 100 immediately after turning off the light, the user does not feel discomfort. In addition, the risk of injury such as burns can be significantly reduced.
The main part 40 is formed including a light transmissive material. The main part 40 is formed to include a light diffusing material.

The cover 4 is attached to the main body 3 having the light source unit 6 and an annular peripheral portion 33 provided around the light source unit 6 while covering the light source unit 6.
The cover 4 is formed of a single component, and includes an annular cover attachment portion 43 having a diameter W28 smaller than the maximum outer diameter W1 of the cover 4 and attached to the peripheral portion 33.
As shown in FIGS. 15 and 17, the cover 4 has an opening 401 having a diameter smaller than the maximum outer diameter W1 of the cover 4. The cover attaching portion 43 which is the edge of the opening 401 is attached to the outside of the peripheral portion 33 of the main body 3. The diameter W28 of the cover attaching portion 43 is smaller than the maximum outer diameter W1 of the cover 4.
As shown in FIG. 17, the diameter of the inner peripheral portion of the cover attaching portion 43 is smaller than the diameter of the outer peripheral portion M of the cover 40 which is the maximum diameter of the main portion 40, that is, the maximum outer diameter W1 of the cover 4. In addition, the diameter of the outer peripheral portion of the cover mounting portion 43 is smaller than the diameter of the outer peripheral portion M of the cover 40, which is the maximum diameter of the main portion 40, that is, the maximum outer diameter W1 of the cover 4.

The cover 4 is also called a light transmission part, a light transmission part, a light diffusion part, and a globe.
The cover attaching portion 43 has a cover convex portion 45 protruding toward the inside of the opening 401 and having a cover convex portion 45 stopped between the facing portion 343 of the main body 3 and the bottom surface portion 35 (FIG. 22 (a)). That is, at least a part of the cover attaching portion 43 has the cover convex portion 45 projecting from the inner peripheral portion of the cover attaching portion 43 toward the center of the cover attaching portion 43. The cover projection 45 is also called an overhang.
Further, the cover 4 has mounting claws 46 provided in a direction opposite to the light emission direction from the cover convex portion 45, and has the mounting claws 46 inserted into the grooves 350 (FIG. 22B). reference).
The cover 4 is attached by engaging the cover attaching portion 43 with the peripheral portion 33 that is the main body attaching portion from outside the peripheral portion 33.
The mounting structure between the cover 4 and the main body 3 will be described later.

As shown in FIG. 15, the cover 4 has a main portion 40 having an outer shape of a substantially spherical body and an inner space of a substantially spherical shape formed inside, and a maximum outer diameter W1 of the cover 4 which is the maximum diameter of the main portion 40. It has a smaller diameter W28 and a cover mounting portion 43 formed on a part of the main portion 40. The cover 4 has an outer peripheral surface 41 that is an outer peripheral surface and an inner peripheral surface 42 that is an inner peripheral surface.
The cover 4 has a main portion 40 in which the outer peripheral surface portion 41 and the inner peripheral surface portion 42 have a substantially spherical shape, and a substantially spherical internal space is formed inside the inner peripheral surface portion 42, and a part of the main portion 40 has an annular shape. And a cover attaching portion 43 formed.
The cover attachment portion 43 is, specifically, an edge of an opening 401 formed in the main portion 40.
The main part 40 is a light output part that emits light emitted by the light source element 67.

In the cover 4, an annular concave portion 410 is formed in the outer peripheral surface portion 41 near the cover attaching portion 43.
The cover 4 is formed between an outer peripheral portion M of the outer peripheral surface 41 that is the outer peripheral surface of the cover 4 and a maximum outer diameter W1 of a portion obtained by removing the cover attaching portion 43 from the outer peripheral surface 41 and the cover attaching portion 43. An annular concave portion 410 is formed in the outer peripheral surface portion 41. The outer peripheral portion M of the maximum outer diameter W1 of the cover 4 is a portion of the maximum diameter of the cover 4, that is, an outer peripheral portion of a portion of the cover 4 that expands most, and is also referred to as a maximum diameter portion.
The cover 4 is configured by a curved surface in which a region of the outer peripheral surface portion 41 where the concave portion 410 is not formed is continuous.
The cover 4 is configured by a spherical surface in which a region of the outer peripheral surface portion 41 where the concave portion 410 is not formed is continuous. That is, the outer peripheral surface portion 41 has a form in which a part of the spherical surface is missing. The outer peripheral surface portion 41 is a spherical surface in which a region where the concave portion 410 is not formed is smoothly continuous, and the concave portion 410 is formed by depressing a part of the spherical surface.

  As shown in FIG. 19, the cover 4 includes a concave portion 410 formed along the cover attaching portion 43 between the cover attaching portion 43 and the cover outer peripheral portion M of the main portion 40 along the cover attaching portion 43. Prepare. That is, the concave portion 410 is an annular recess provided substantially parallel to the annular shape of the cover attachment portion 43.

As shown in FIGS. 18 and 19, the concave portion 410 includes a bottom portion 413, a first inclined portion 412 that is inclined from the top portion 402 side of the cover facing the cover attaching portion 43 toward the bottom portion 413, and an outer periphery from the bottom portion 413. And a second inclined portion 411 inclined to the surface portion 41. The boundary between the outer peripheral surface portion 41 and the first inclined portion 412, the boundary between the first inclined portion 412 and the bottom portion 413, the boundary between the bottom portion 413 and the second inclined portion 411, the second inclined portion 411 and the outer peripheral surface portion 41 Is constituted by a smoothly continuous curved surface.
Note that each of the first inclined portion 412, the bottom portion 413, and the second inclined portion 411 may form a plane. However, it is preferable that the first inclined portion 412, the bottom portion 413, the second inclined portion 411, and the outer peripheral surface portion 41 are formed of a smoothly continuous curved surface as a whole.

The first inclined portion 412 has a curved surface portion 4121 protruding toward the cover attaching portion 43.
Further, it is preferable that the width of the first inclined portion 412 in the axial direction from the center of the cover attaching portion 43 toward the top portion 402 is larger than the width of the second inclined portion 411 in the axial direction.

As shown in FIG. 18A, the concave portion 410 includes a first inclined portion 412, a second inclined portion 411, and a bottom portion 413. In the outer peripheral surface portion 41, the first inclined portion 412, the second inclined portion 411, and the bottom portion 413 are connected by a smooth curved surface. That is, the outer peripheral surface portion 41 is formed of a continuous curved surface.
Since the diameter of the opening 401 of the cover 4 is smaller than the maximum diameter W1 of the cover 4, blow molding (hollow molding) is more suitable as a manufacturing method than injection molding (injection molding) that requires a mold having a complicated configuration. . In blow molding, it is necessary to engage with the mold so that the resin material does not come off from the mold due to air pressure in the step of blowing gas, and the concave portion 410 formed to engage with the mold is used in blow molding. This is a preferred embodiment. In other words, the cover 4 can regulate the movement of the resin material in the step of blowing the gas by the concave portion 410.

The concave portion 410 is formed on the outer peripheral surface portion 41 of the main portion 40.
The concave portion 410 has a thickness smaller than the thickness of any part of the main portion 40. As shown in FIG. 18B, the depth W29 of the groove is smaller than the thickness of any part of the main part 40.
The thickness of the portion where the concave portion 410 is formed is smaller than the thickness of the portion where the concave portion 410 is not formed.

The cover mounting portion 43 is formed integrally with the main portion 40 in an annular shape outside the opening 401 having a diameter smaller than the maximum outer diameter W1 of the main portion 40.
The cover mounting portion 43 has a contact surface portion 44 that comes into contact with the bottom surface portion 35 of the main body portion 3, and a cover convex portion 45 that projects toward the center of the opening 401 along the contact surface portion 44.
The cover 4 is attached to the main body 3 by engaging the cover projection 45 of the cover attachment section 43 with the attachment projection 340 of the peripheral section 33.

As shown in FIGS. 17B and 17C and FIG. 18, the cover projection 45 of the cover mounting portion 43 has a protrusion W30 from the peripheral wall portion 34 smaller than the maximum thickness D1 of the cover 4. Is preferred.
In addition, as shown in FIG. 14B and FIG. 18, it is preferable that the overhang dimension W30 of the cover projection 45 of the cover attachment section 43 is equal to or greater than the overhang dimension W36 of the attachment projection 340 of the peripheral section 33. That is, it is preferable that the overhang dimension W30 of the cover projection 45 is the same as the overhang dimension W36 of the attachment projection 340 or larger than the overhang dimension W36 of the attachment projection 340.

  The cover projection 45 is formed in an annular shape at the edge of the opening 401. Further, a plurality of cover protrusions 45 may be formed on the edge of the opening 401. That is, the cover projection 45 may be divided into a plurality of parts. When the cover protrusion 45 is divided into a plurality of parts, the cover protrusion 45 is formed at a position corresponding to the mounting protrusion 340 of the main body 3 when the cover 4 is mounted on the main body 3.

The cover attaching portion 43 is formed integrally with the main portion 40, and has an attaching claw portion 46 erected from the contact surface portion 44 in the normal direction of the contact surface portion 44. The mounting claw portion 46 is inserted into the groove portion 350 of the peripheral portion 33.
As shown in FIG. 18B, the mounting claw portion 46 includes an inner peripheral portion 460, an outer peripheral portion 461, a front end portion 462, and side end portions 463 on both sides. As shown in FIG. 9, the side ends 463 on both sides are referred to as side ends 463a and 463b. The mounting claw portion 46 has a substantially triangular cross section obtained by cutting the circumferential direction of the axis O. In addition, the cross section of the mounting claw portion 46 in the circumferential direction of the axis O may be other than a substantially triangular shape. Since the mounting claw 46 has a substantially triangular cross section, it can be easily inserted into the groove 350 of the main body 3.

As shown in (b) and (c) of FIG. 17 and (b) of FIG. 18, the mounting claw portion 46 has an upright dimension L26 rising from the cover projection 45 smaller than the maximum thickness dimension D1 of the cover 4. Is preferred.
In addition, as shown in FIGS. 14A and 18B, the mounting claw portion 46 preferably has a vertical dimension L26 equal to or less than a depth dimension L24 of the groove 350.

The mounting claw portion 46 is formed on a part of the annular cover convex portion 45. The mounting claws 46 are formed at positions corresponding to the grooves 350 of the main body 3 when the cover 4 is mounted on the main body 3.
The circumferential total angle at which the mounting claw portion 46 is formed in the cover mounting portion 43 is smaller than the circumferential total angle at which the groove portion 350 is formed at the peripheral portion 33 of the main body 3. That is, the ratio of the portion where the mounting claw portion 46 is formed to the annular edge portion of the opening 401 is smaller than the ratio of the portion where the groove portion 350 is formed to the peripheral portion 33.
It is preferable that the circumferential width W27 of the mounting claw portion 46 shown in FIG. 17 be smaller than the circumferential width W19 of the groove portion 350 of the main body 3 shown in FIG. That is, the circumferential length of the mounting claw portion 46 is preferably shorter than the circumferential length of the groove portion 350 of the main body 3. Note that the circumferential length of the mounting claw portion 46 and the circumferential length of the groove portion 350 of the main body 3 may be substantially the same.

Here, the concave portion 410 will be described in more detail.
As shown in FIG. 19, the concave portion 410 is formed on at least a part of the outer peripheral surface portion 41 on the side of the mouthpiece 1 with respect to the cover outer peripheral portion M which is the maximum diameter portion of the cover 4.
The concave portion 410 is formed on at least a part of the outer peripheral surface portion 41 on the side of the base 1 with respect to the light source portion 6.
The concave portion 410 is formed on at least a part of the outer peripheral surface portion 41 on the side of the base 1 with respect to the light source element 67 of the light source portion 6.
The concave portion 410 is formed on at least a part of the outer peripheral surface portion 41 on the base 1 side with respect to the light source circuit board 60 of the light source portion 6.
In addition, the concave portion 410 is formed on at least a part of the outer peripheral surface portion 41 on the base 1 side with respect to the mounting portion 61 of the light source unit 6. That is, the concave portion 410 is formed on the outer peripheral surface portion 41 between the upper end of the light source element 67 and the cover attaching portion 43.

Since the concave portion 410 is formed at the above-described position in the outer peripheral surface portion 41, the concave portion 410 has a relative value of 60% or less with respect to the central luminous intensity (a luminous flux value in the direction of an angle of 0 ° on the central axis OO). Is provided in the region of the outer peripheral surface portion 41. Therefore, in the vicinity of the concave portion 410, the light emitted from the outer peripheral surface portion 41 does not give an extremely discontinuous impression. Further, since the concave portion 410 is formed by a continuous curved surface, there is no extreme change in the thickness dimension, and the change in light transmittance becomes extremely smooth.
As shown in FIG. 19, the area of the outer peripheral surface portion 41 where the relative value to the central luminous intensity (luminous flux value at the angle of 0 ° on the central axis OO) is 60% or less is the maximum diameter portion. It is provided closer to the base than the outer peripheral portion M. Therefore, the user does not directly visually recognize the recess 410 and the slightly discontinuous change in the irradiation light in the vicinity of the recess 410.
For this reason, in the present embodiment, the lamp 100 is excellent in all of the optical specifications and visual characteristics, and there is no optical discomfort associated with the shape of the recess 410.

FIG. 20 shows a light distribution characteristic diagram illustrating an optical effect of the lamp 100 according to the present embodiment. The broken line indicates the light distribution characteristics of the lamp using the cover without the concave portion 410, and the solid line indicates the light distribution characteristics of the lamp 100 according to the present embodiment using the cover 4 with the concave portion 410. In order to compare the light distribution characteristics, central luminous intensity (a luminous flux value in a direction of an angle of 0 ° on the central axis OO) is aligned and overlapped. One scale in the radial direction indicates 20%, and one scale in the circumferential direction, that is, one angle direction indicates 20 °.
Although a difference appears in the light distribution characteristics in a region of approximately 100 ° or more, the difference between the two characteristics shows the maximum value in the range of 180 ° to 240 °. Due to the formation of the concave portion 410, the angle (light distribution angle) at which the relative value with respect to the central luminous intensity (luminous flux value at the angle of 0 ° on the central axis OO) becomes 50% is from about 200 ° to about 220 °. The improvement effect of about 20 ° has been confirmed.

  In addition, it is difficult to recognize the inclination of the cover 4 itself, which is a substantially spherical body, but in the cover 4 according to the present embodiment, the concave portion 410 formed along the edge of the opening 401, which is the opening end, is inclined. Support recognition. Such a support is suitable for attaching the cover 4 to the main body 3. That is, the user can attach the cover 4 to the main body 3 while confirming the parallelism between the concave portion 410 formed along the edge of the opening 401 and the bottom surface 35 of the main body 3. 4 can be accurately attached to the main body 3 without tilting. Therefore, manufacturing quality, initial quality, and aging quality can be reliably maintained.

  In addition, the formation of the concave portion 410 also has an effect that the cover 4 is fitted to the fingertip and easily gripped when the user attaches or detaches the lamp 100 to or from the lighting fixture.

Here, the first inclined portion 412 will be described.
As shown in FIG. 19, in a cross-sectional view along the central axis OO, the normal direction to the tangent to the cover 4 whose outer peripheral surface 41 is a substantially spherical body is the direction of dashed arrows r1, r2, and r3. The direction of the normal to the tangent line of the first inclined portion 412 is the direction of the solid arrows r2a and r3a.
The direction of the solid arrows r2a, r3a, which is the normal direction to the tangent line of the first inclined portion 412, is based on the direction of the dashed arrows r1, r2, r3, which are the normal directions to the tangent line of the cover 4. Is facing the base 1. That is, in the first inclined portion 412, light is more easily applied to the base 1 side than in the case of a substantially spherical body.
That is, r2 becomes r2a and r3 becomes r3a as compared with the case where the cover does not have the concave portion 410. Here, the angle θr2 between r2 and r2a is θr2> 0 °, and the angle θr3 between r3 and r3a is θr3> 0 °.

The direction of the solid arrows r2a and r3a, which are normal directions to the tangent line of the first inclined portion 412, is gradually directed toward the base 1 from the upper end to the lower end. Is formed. That is, the relationship is θr3>θr2> 0 °.
Therefore, light can be applied to the base 1 on the side of the base 1 where the luminous intensity or the amount of light emitted from the outer peripheral surface 41 of the cover 4 is further attenuated.

  Further, in a cross-sectional view along the central axis OO, the portion where the first inclined portion 412 of the cover 4 is formed is formed such that the thickness dimension gradually decreases from the upper end to the lower end. Have been. That is, the light transmittance of the cover 4 is further increased on the side of the base 1 where the light intensity or the amount of light emitted from the outer peripheral surface portion 41 of the cover 4 is attenuated. Can be. That is, | r3a |> | r2a |> | r1 |. The length of the arrow r in FIG. 19 schematically indicates the magnitude of light extraction efficiency, not the absolute luminous intensity (light amount). | R3a |, | r2a |, | r1 | indicate the magnitude of light extraction efficiency in each direction.

Next, the second inclined portion 411 will be described.
In a cross-sectional view along the central axis OO, the second inclined portion 411 is aligned with the central axis OO with reference to the direction of the solid arrow r3a that is the normal direction to the tangent at the lower end of the first inclined portion 412. Make an inclination angle that is close. That is, the inclination angle of the second inclined portion 411 is an angle that does not intersect with the normal direction (the direction of the solid arrow r3a) to the tangent line in the first inclined portion 412. That is, the angle formed by the first inclined portion 412 and the second inclined portion 411 is larger than 90 degrees.
Such a first inclined portion 412 and a second inclined portion 411 are suitable as a form in which the second inclined portion 411 does not block light emitted from the first inclined portion 412. In particular, at the lower end portion of the first inclined portion 412, since the thickness dimension is small, it is desired that the extraction efficiency of the light extracted through the cover 4 is highest. Therefore, the second inclined portion 411 includes the first inclined portion. It is preferable that the inclination angle θt be formed so as to have a predetermined angle with respect to the normal line direction to the tangent line of the lower end of 412 (θt ≧ 0 °).

  The cover 4 may be formed such that the thickness dimension gradually decreases toward the cover attachment section 43 based on the thickness dimension D1 of the top portion 402. When the cover 4 is formed of a material having a light diffusing property, the light transmissivity decreases and the light diffusivity improves as the thickness dimension increases, and the light transmissivity improves as the thickness dimension decreases. And the light diffusion property is reduced. Therefore, the lamp 100 can obtain wider light distribution characteristics.

  Also, in blow molding (hollow molding), when gas is blown into the melted parison, generally, the thickness of the top portion 402 extruded first becomes larger than the thickness of the open end portion extruded last. . This is also referred to as drawdown and is a difference in thickness dimension which is a drawback of blow molding (hollow molding). However, for the cover 4 according to the present embodiment, it is regarded as a preferable phenomenon for obtaining a wide light distribution characteristic. be able to.

  In addition, the cover 4 may be formed using an additional manufacturing technology (Additive Manufacturing Technology) other than the blow molding method (hollow molding method) and the injection molding method.

*** Mounting structure of body 3 and cover 4 ***
FIG. 21 is a diagram illustrating a mounting structure of the main body 3 and the cover 4 according to the present embodiment.
FIGS. 22A and 22B are views showing an attachment structure of the main body 3 and the cover 4 according to the present embodiment, wherein FIG. 22A is an enlarged view of a Q1 part of FIG. 4C, and FIG. It is a P1 part enlarged view of b).
FIGS. 23A and 23B are diagrams showing a mounting structure of the main body 3 and the cover 4 according to the present embodiment, and FIG. FIG. 2B is a cross-sectional view of the mounting structure of the main body 3 and the cover 4 taken along a plane orthogonal to the axis O.

First, an engagement structure between the cover protrusion 45 of the cover mounting portion 43 and the mounting protrusion 340 of the peripheral portion 33 will be described.
As shown in FIG. 21, the cover attaching portion 43 of the cover 4 is attached to the outside of the peripheral portion 33 of the main body 3.
As shown in FIG. 22, the cover attaching portion 43 is attached to the peripheral portion 33 outside the peripheral portion 33 so as to hold the peripheral portion 33 from the outside. The outer side of the peripheral portion 33 refers to the surface side of the peripheral wall portion 34 and the upper surface side of the bottom portion.
Therefore, when the cover attaching portion 43 is attached to the peripheral portion 33, the peripheral portion 33 is in a state of being covered by the cover 4, and is almost invisible from outside.
When the cover 4 is attached to the main body 3, the outer peripheral surface 41 of the cover 4 and the outer peripheral portion 362 of the main body 3 form a substantially continuous curved surface, and the design of the lamp 100 is improved.

  The cover convex portion 45 of the cover mounting portion 43 and the mounting convex portion 340 of the peripheral portion 33 are engaged with each other. The cover 4 including the cover attaching portion 43 is formed of a resin material and has flexibility, that is, elasticity. The cover projection 45 of the cover attachment portion 43 engages with the attachment projection 340 of the peripheral portion 33 while undergoing elastic deformation.

(A) of FIG. 22 is an enlarged view of a Q1 part of (c) of FIG. 4, and shows a state in which the cover protrusion 45 and the mounting protrusion 340 are engaged.
The cover convex portion 45 has an upper surface portion 450, an inner peripheral portion 451, and a lower surface portion 452. The lower surface 452 is the contact surface 44 described above.
When the cover 4 is pushed into the main body 3 from above, the cover 4 moves downward while the inner peripheral portion 451, which is an inclined surface, contacts the inclined portion 341. It is preferable to configure the respective inclination angles such that the inner peripheral portion 451 and the inclined portion 341 are in contact with each other. Due to the elastic force of the cover 4, the cover projection 45 gets over the mounting projection 340. Then, the cover convex portion 45 fits into a space region formed by the facing portion 343, the peripheral wall portion 34, and the bottom surface portion 35.
At this time, the lower surface portion 452 and the bottom surface portion 35 are in contact with each other, the upper surface portion 450 is locked by the facing portion 343, and the cover 4 is fixed to the main body portion 3.

Next, an engagement structure between the mounting claw portion 46 of the cover mounting portion 43 and the groove portion 350 of the peripheral portion 33 will be described.
As shown in FIG. 21, the cover 4 is mounted from above the main body 3 so that the mounting claw 46 and the groove 350 are located at corresponding positions.
As shown in FIG. 22B, the mounting claw portion 46 is inserted into the groove portion 350. At this time, the outer peripheral portion 352 of the groove 350 and the outer peripheral portion 461 of the mounting claw portion 46 abut. It is preferable to configure the respective inclination angles such that the outer peripheral portion 352 of the groove 350 and the outer peripheral portion 461 of the mounting claw portion 46 come into contact with each other.

As described with reference to FIG. 12A, the groove 350 is partially formed on the bottom surface 35 of the peripheral portion 33. By being partially formed in this way, the mounting claw portion 46 fitted into the groove portion 350 regulates the mutual rotation of the cover 4 and the main body portion 3.
As shown in FIGS. 23A and 23B, the circumferential width W19 of the groove 350 is formed to be larger than the circumferential width W27 of the mounting claw 46. Therefore, gaps CL1 and CL2 are formed between the side ends 354a and 354b of the groove 350 and the side ends 463a and 463b of the mounting claw 46, respectively. With such a configuration, the mounting claw portion 46 can rotate only inside the groove portion 350 by the gaps CL1 and CL2, and the rotation in the circumferential direction is restricted. The maximum value of the circumferential width of the gaps CL1 and CL2 is equal to or less than W34.

In the lamp 100 according to the present embodiment, since the cover 4 occupies a large portion of the outer shell, it is assumed that the user grips the cover 4 when attaching or detaching the lamp 100 to or from the lighting fixture 200. . As described above, since the mutual rotation of the cover 4 and the main body 3 is restricted, when the user attaches or removes the lamp 100 to or from the lighting fixture 200, only the cover 4 may idle. , And can be securely attached and detached.
When the rotation can be restricted by other means, the groove 350 may be formed in the bottom surface 35 of the peripheral portion 33 in an annular shape over the entire circumference. In this case, the man-hour required for forming the groove 350 can be reduced by molding using a mold or cutting the entire circumference.

  When the groove portion 350 and the mounting claw portion 46 are provided at a plurality of positions, the width may be different from each other, and the mounting angle of the cover 4, that is, the direction of the rotation direction may be regulated. Specifically, when the display is performed on both the surface of the cover 4 and the surface of the main body 3, the mutual positioning of the cover 4 and the main body 3 can be performed. Therefore, the mutual positional relationship between the cover 4 and the main body 3 can be prevented from varying for each product.

In the peripheral portion 33 of the main body 3, the peripheral wall 34 is recessed toward the central axis O of the lamp 100 in a region where the groove 350 is formed, and functions as an installation guide when the cover 4 is mounted on the main body 3. Having.
The groove 350 is filled with an appropriate amount of adhesive, and the mounting claw 46 can be adhesively fixed. Even if the adhesive is inserted (fitted) into the groove 350, the adhesive stays inside the groove 350 and is managed in such an amount that it does not protrude into the area of the main part 40 of the cover 4. Since the adhesive does not protrude into the region of the main portion 40, that is, the inner peripheral surface portion 42 and the outer peripheral surface portion 41, the optical characteristics are not deteriorated. Further, since the adhesive does not protrude outside the lamp 100, the design is excellent.
Alternatively, a method of bonding and fixing the mounting protrusion 340 of the main body 3 and the cover protrusion 45 of the cover 4 using an adhesive may be used. However, since the cover 4 including the cover attachment portion 43 is formed of a resin material and has flexibility, when the cover projection 45 is engaged with the attachment projection 340, the elastic deformation of the cover projection 45 is restored. The adhesive applied in advance may be scattered inside the cover due to the impact. When the engagement is performed in a state where a sufficient adhesive necessary for the adhesive fixing does not remain, a sufficient adhesive effect may not be obtained. Further, if the scattered adhesive adheres to the optical element such as the LED 67, there is a possibility that sufficient optical characteristics cannot be obtained. Furthermore, the adhesive applied to the mounting protrusion 340 may be wiped off by the cover protrusion 45, and may protrude outside the lamp 100 to impair the design.
Therefore, it is preferable to fill the groove portion 350 with an appropriate amount of adhesive and bond and fix the mounting claw portion 46.

Next, the dimensions of each part of the main body 3 and the cover 4 will be described.
The dimensions and form of lamp 100 according to the present embodiment are based on the form of model PS35 based on standard JEL118 established by the Japan Lighting Manufacturers Association. In the lamp 100 according to the present embodiment, the position of the light source element 67 of the light source unit 6 is smaller than the position of the base 1 by 50 mm toward the cover 4 in the direction of the central axis OO with respect to the lowermost end of the base 1. Side. With such an arrangement, the lighting device 100 can obtain a lighting effect close to that of a mini krypton bulb when lit.
That is, with reference to FIG.
Base 1 to light source arrangement section 30: L2 + L3 + L4 + L5 ≦ 50 mm
Base 1 to light source element 67: L2 + L3 + L4 + L6 + L7 ≦ 50 mm

In the lamp 100 according to the present embodiment, in order to obtain a wide light distribution characteristic with a simple configuration, the outer shell portion is constituted by the main portion 40 of the cover 4 up to the base 1. Therefore, the main body 3 has a smaller maximum outer diameter W17.
As shown in FIG. 12, the main body 3 preferably has a maximum outer diameter W17 of about 160% or less, particularly about 157% or less, with respect to a minimum outer diameter W20. Conversely, the minimum outer diameter W20 is preferably about 61% or more, particularly preferably 63% or more with respect to the maximum outer diameter W17.

Further, for the same reason, the length (height) of the main body 3, that is, L4 of the outer shell portion shown in FIG. 4 is reduced.
The length (height) L4 of the outer shell of the main body 3 is smaller than the length (height) L27 + L28 + L8 + L30 of the outer shell of the cover 4, that is, the main part 40 shown in FIG. , Approximately 65% or less.

As described above, in order to obtain a wide light distribution characteristic with a simple configuration, the lamp 100 according to the present embodiment includes the main portion 40 of the cover 4 up to the base 1 side. In addition, since the lamp 100 is required to have a high mounting property, the diameter of the cover 4 is reduced at the end of the base 1. As a result, the light source arrangement section 30 is also limited in size (area), and in order to obtain a wide light distribution characteristic, it is desired to arrange the light source element 67 on the light source circuit board 60 as outside as possible.
As shown in FIG. 13, it is preferable that the maximum outer diameter W22 of the light source disposing portion be approximately 85% or more of the maximum outer diameter W17 of the main body portion 3.

  As shown in FIG. 12A, the peripheral portion 33 of the main body 3 is preferably provided in a region of 80% or more of the maximum outer diameter W17 of the main body 3. In particular, the peripheral portion 33 of the main body 3 is preferably provided in a region of 85% or more of the maximum outer diameter W17 of the main body 3, and more preferably 86% or more. The maximum outer diameter W17 of the peripheral portion 33 is preferably 90% or less of the maximum outer diameter W1 of the cover 4, and more preferably 85% or less.

  In the peripheral portion 33, the maximum height dimension (L23 + L24) (see (a) of FIG. 14) is 20% or less of the height dimension (L21 + L22 + L23) of the main body 3 (see (a) of FIG. 13). Is more preferable, and particularly preferably 16% or less.

  As described above, in order to maximize the size (area) of the light source disposing portion 30, the peripheral portion 33 has a size of approximately 15% (7.5% on one side) with respect to the maximum outer diameter W17 of the main body portion 3. The area condenses the fitting and engaging configuration compactly.

As described above, in order to obtain a wide light distribution characteristic with a simple configuration, the lamp 100 according to the present embodiment includes the main portion 40 of the cover 4 up to the base 1 side. For this reason, the minimum outer diameter W28 of the main part 40 which is the outer shell part of the cover 4 becomes small. The maximum outer diameter W28 is about 86% or less with respect to the maximum outer diameter W1 of the cover 4, and conversely, the maximum outer diameter W1 which is the maximum outer diameter with respect to the minimum outer diameter W28 is about 117% or more.
For the same reason, the length (height) dimension L27 + L28 + L8 + L30 of the main portion 40 which is the outer shell portion of the cover 4 is increased. The length (height) dimension L27 + L28 + L8 + L30 of the main part 40, which is the outer shell part of the cover 4, is larger than the length (height) dimension L4 of the outer shell part of the main body part 3, which is about 156% or more.

In the present embodiment, the following lamp 100 has been described.
The lamp 100 includes a light source disposing portion 30 on one end side of which the light source portion 6 is disposed, and a housing portion on the other end side of which a power supply terminal mounting portion (screw portion 210) to which the base 1 serving as a power supply terminal is mounted is formed. . The housing section includes the main body section 3 and the internal housing 2. The cover 4 is attached to the housing.
The housing portion has a mounting projection 340 formed between the power supply terminal mounting portion (screw portion 210) and the light source mounting portion 30 and extending outward from the light source mounting portion 30. The cover 4 has a cover convex portion 45, and is attached to the housing by engaging the cover convex portion 45 with the mounting convex portion 340.
The cover 4 is attached to the base 1 with reference to the light source disposing portion 30 of the main body 3.

The lamp 100 includes a cylindrical base 1, a cylindrical internal housing 2 attached to the inside of the base 1 concentrically with the base 1, and a part of the peripheral wall of the internal housing 2 concentric with the internal housing 2. An outer shell portion is formed of a main body portion 3 to be covered and a cover 4 attached to the main body portion 3 so as to cover an end of the housing portion (the main body portion 3 and the inner housing 2) opposite to the base 1.
The outer shell has a maximum dimension (L1) in the axial direction of the base 1 and a maximum dimension (outer diameter W1 of the cover) in a direction perpendicular to the axis of the base 1 that are equal to or smaller than the dimensions specified by the model PS35 of JEL110. The dimensions.
The maximum dimension (L1) of the outer shell in the axial direction of the base 1 is 70 mm or less.
The maximum dimension of the outer shell portion (cover outer diameter W1) in a direction orthogonal to the axis of the base 1 is 35 mm or less.

*** Explanation of lighting equipment ***
FIG. 24 is a diagram showing a lighting device 3000a in which the lamp 100 according to the present embodiment is mounted on a hanging type lighting device 200.
The lighting fixture 200 is mounted on a mounting portion 2000 such as a ceiling surface.
The lighting fixture 200 includes a device main body 200a, a socket 201, a power cord 203, and a hooking ceiling 204.
The lamp 100 is mounted on the socket 201 of the lighting fixture 200.
Broadening the light distribution of the lamp 100 according to the present embodiment increases the brightness on the ceiling side. In the lamp 100 according to the present embodiment, the load on the power cord 203 is reduced by reducing the weight of the lamp 100.

FIG. 25 is a diagram illustrating a lighting device 3000b in which the lighting device 100 according to the present embodiment is mounted on a lighting device 300 of an embedded type.
The lighting fixture 300 is mounted in a mounting hole 4000 provided in a mounting portion 2000 such as a ceiling surface.
The lighting fixture 200 includes a device main body 301 including a reflector, a decorative frame, and the like, and a socket 201.
The lamp 100 is mounted on the socket 201 of the lighting fixture 300.
By increasing the light distribution of the lamp 100 according to the present embodiment, the brightness of the upper portion of the reflector increases. In addition, the downsizing of the lamp 100 improves the mountability to the apparatus main body 301. Moreover, the burden on the apparatus main body 301 is reduced by reducing the weight of the lamp 100.

FIG. 26 is a diagram illustrating a lighting device 3000c in which the lamp 100 according to the present embodiment is mounted on a lighting device 400 of an embedded type.
The lighting device 3000c is a ceiling-embedded lighting device attached to a mounting hole 4000 formed in a mounting portion 2000 such as a ceiling surface.

The lighting fixture 400 includes a device main body 4011 including a reflector and a decorative frame, a holding arm 4021, a socket 201, and a terminal block 403.
Broadening the light distribution of the lamp 100 according to the present embodiment increases the brightness of the entire reflector. In addition, the downsizing of the lamp 100 improves the mountability to the apparatus main body. Moreover, the burden on the apparatus main body 4011 is reduced by reducing the weight of the lamp 100.

*** Explanation of effects according to the present embodiment ***
In general, when the area of the cover is small, complicated optical elements are required to diffuse light and distribute light over a wide range.
According to the lamp 100 according to the present embodiment, the entire structure of the lamp 100 is simplified by improving the mounting structure of the cover 4 and the main body 3 and configuring the optical components by the cover 4 as one housing. Can be realized. Further, since the cover 4 is integrally formed, the reliability can be maintained for a long time.
Specifically, as shown in FIG. 4A, in the longitudinal direction of the lamp 100, the ratio of the main body 3 occupying the outer shell portion is reduced, and the ratio of the cover 4 occupying the outer shell portion is increased. I have.

In particular, in a small LED lamp having a small base such as an E17 type, in order to improve the adaptability and the mountability to the lighting fixture 200, it is necessary to have the same size and the same shape as a bulb generally called a mini krypton bulb. Is desired.
The dimensions and form of the lamp 100 according to the present embodiment are based on the form of the following model PS35 based on the standard JEL118 established by the Japan Lighting Manufacturers Association.
Ball diameter (maximum outer diameter W1 of cover): 35 mm
Length (L1): 70 mm or less Distance (L1-L8-L9-D1) from the base to the light source (emission center): 50 mm or less

Since the lamp 100 according to the present embodiment satisfies the above conditions and aims at wide light distribution, the boundary between the main body 3 and the cover 4 moves toward the base 1 and the diameter of the boundary ( W17, W28) are smaller in size than general small LED lamps.
In the lamp 100 according to the present embodiment, the optical component is only one cover 4 and has the following features in order to achieve a wide light distribution with this configuration.
(1) The light source element 67 is arranged as much as possible on the periphery of the light source arrangement part 30.
(2) A distance (≒ L8 + L9) between the light source element 67 and the cover 4 (see FIG. 4B) is secured. That is, the light source element 67 is arranged as close to the base 1 as possible.
That is, since the light source disposing portion 30 is smaller in diameter than a general small LED lamp, the space for attaching the cover 4 to the main body 3 is restricted. For this reason, it is necessary to devise the form and the mutual relationship between the cover mounting portion 43 of the cover 4 and the peripheral portion 33 of the main body 3.
Specifically, according to the lamp 100 according to the present embodiment, a compact mounting structure can be realized by employing a structure in which the cover 4 holds the main body 3.

  Further, according to the lamp 100 according to the present embodiment, the mounting claw portion 46 and the groove portion 350 can also serve to regulate the mutual rotation of the cover 4 and the main body 3. Therefore, with a simple configuration, when the user attaches or detaches the lamp 100 to or from the lighting fixture 200, the attachment and detachment can be reliably performed.

  Further, in the lamp 100 according to the present embodiment, the main body 3 is downsized, so that the mass is reduced. In the main body 3 having a relatively large specific gravity, the volume ratio of the lamp 100 is reduced. Therefore, even if any material is used for the main body 3, the lighting device 100 can be reduced in weight.

  As described above, according to the lamp 100 according to the present embodiment, a light bulb-shaped lamp that obtains a wide light distribution at low cost without hindering downsizing and weight reduction, and a lighting device including the light bulb-shaped lamp are provided. can do.

*** Other configuration ***
Although an LED is used as the light source element 67 in the present embodiment, a light source element other than the LED may be used. Specifically, an organic EL or a laser may be used as the light source element.
The lamp 100 has been described as an example of a mini krypton type small light bulb using an LED as a light source, but other forms of light bulb shaped lamps are also applicable.

Although the embodiments of the present invention have been described above, two or more of the embodiments may be combined and implemented. Alternatively, one of the embodiments may be partially implemented. Alternatively, two or more of the embodiments may be partially combined and implemented. In addition, this embodiment may be implemented in any combination as a whole or a part.
The above embodiment is essentially a preferred example, and is not intended to limit the scope of the present invention, its application, and application, and various modifications can be made as necessary. .

  1 cap, 10 screw portion, 12 eyelet portion, 13 eyelet hole, 2, 2a inner housing, 20 cylindrical portion, 21 outer peripheral portion, 210 screw portion, 211 flange portion, 212 insertion guide convex portion, 213 wire arrangement groove, 22 Inner circumference, 23 1st open end, 24 2nd open end, 220 receiving part, 221 rib, 222 screw hole, 223 first convex part, 224 second convex part, 25, 25a lid part, 26, 26a Screw penetration part, 27 electric wire penetration hole, 3 main body part, 30 light source arrangement part, 37 mounting surface part, 31 screw penetration hole, 32 electric wire penetration hole, 33 peripheral part, 34 peripheral wall part, 340 mounting convex part, 341 inclined part, 342 Outer peripheral part, 343 facing part, 344 mounting guide part, 345 inclined part, 346 outer peripheral part, 35 bottom part, 350 groove part, 351 inner peripheral part, 352 outer peripheral part, 353 bottom part, 354 354a, 354b side end, 36 cylinder, 360 cylinder, 361 cone, 362 outer circumference, 363 inner circumference, 364 insertion guide recess, 365 opening end, 4 cover, 40 main part, 401 opening, 402 Top portion, 41 outer peripheral surface portion, 410 concave portion, 411 second inclined portion, 412 first inclined portion, 413 bottom portion, 42 inner peripheral surface portion, 43 cover attaching portion, 44 contact surface portion, 45 cover convex portion, 450 upper surface portion, 451 inside Peripheral portion, 452 lower surface portion, 46 mounting claw portion, 460 inner peripheral portion, 461 outer peripheral portion, 462 tip portion, 463, 463a, 463b side end portion, 5 power supply portion, 50 lighting circuit board, 6 light source portion, 60 light source circuit Board, 61 mounting portion, 62 heat transfer portion, 65 screw through hole, 66 wire insertion hole, 67 light source element, 7 screw, 8 first wire pair, 9 second wire pair, 100 Lighting fixtures, 200, 300, 400 lighting fixtures, 201 sockets, 203 power cords, 204 hooking ceilings, 403 terminal blocks, 3000a, 3000b, 3000c lighting devices, 2000 mounting portions, 4000 mounting holes, 200a, 301, 4011 device body, 4021 Holding arm, 4121 curved surface, M cover outer periphery, W1 maximum outer diameter.

Claims (8)

A cover attached to a main body having a light source section and an annular peripheral section provided around the light source section while covering the light source section,
It is composed of one part,
An outer peripheral surface portion having an outer peripheral surface having a spherical shape, an inner portion having a hollow shape, and a main portion having an opening formed in a part of the outer peripheral surface portion;
A cover attaching portion that is an edge of the opening and is attached to the peripheral portion;
A concave portion annularly disposed so that the shape concave toward the inside from the outer peripheral surface is parallel to the opening on the outer peripheral surface portion ,
The opening has a diameter larger than the diameter of the peripheral portion, and is formed with a diameter smaller than the outer peripheral portion of the cover which is the maximum diameter of the outer peripheral surface portion,
The cover, wherein the recess is formed between the opening and an outer peripheral portion of the cover. The recess is
A bottom portion, a first inclined portion inclined from the outer peripheral surface portion on the side of the cover outer peripheral portion toward the bottom portion, and a second inclined portion inclined from the bottom portion to the outer peripheral surface portion on the side of the opening ;
A boundary between an outer peripheral surface portion and the first inclined portion, a boundary between the first inclined portion and the bottom portion, a boundary between the bottom portion and the second inclined portion, and a second inclined portion on the side of the outer peripheral portion of the cover; The cover according to claim 1, wherein a boundary between the portion and the outer peripheral surface portion on the side of the opening is formed by a continuous curved surface. The first inclined portion,
3. The cover according to claim 2 , wherein the cover has a curved surface portion protruding toward the cover attachment portion. The axial width toward the side of the first said cover outer peripheral portion from the side of the opening in the inclined portion, the cover according to claim 2 or claim 3 larger than the width of the axial direction of the second inclined portion. The cover according to any one of claims 1 to 4 , wherein a thickness of the portion where the concave portion is formed is smaller than a thickness of a portion where the concave portion is not formed. The light source unit,
A light source circuit board, comprising a light source element mounted on a mounting portion that is a mounting surface of the light source circuit board,
The recess is
The cover according to any one of claims 1 to 5 , wherein the cover is formed on the outer peripheral surface between the upper end of the light source element and the cover mounting portion. A cover according to any one of claims 1 to 6,
A light source section,
A light source arrangement portion in which the light source unit is disposed, possess a peripheral portion of the annular provided around the light source arrangement portion, a body portion in which the cover is attached,
Lamp with a. A lighting device comprising: the lighting device according to claim 7; and a lighting device to which the lighting device is attached.