JP6230275B2 - Lighting lamp and lighting device - Google Patents

Description

  The present invention relates to an illumination lamp and an illumination device.

  Conventionally, there is a light bulb type LED lamp as an illumination lamp. In LED lamps, light emitted from a light source is diffused using a substantially spherical large globe to distribute light to the base part side, or an optical element that performs reflection or the like is provided to actively reflect light to the base part side. Wide distribution of light has been achieved. As a prior art using this type of optical element, for example, there are Patent Documents 1 to 3.

  Patent Documents 1 to 3 describe a housing unit, a light source provided on an end surface of the housing unit, a globe that covers an emission side of the light source and attached to the housing unit, and an optical element that reflects light emitted from the light source. And. The positional relationship between the optical element and the light source is important in order to obtain desired light distribution characteristics. However, in Patent Document 1, the optical element is configured to be attached to a substrate on which the light source is placed. Patent Document 2 has a structure in which an optical element is attached to a housing part or a globe, and Patent Document 3 has a structure in which an optical element is attached to a holder member for holding a lighting circuit provided in the housing part. .

JP2012-054072A (FIG. 1, abstract) JP 2012-094320 A (FIG. 1, FIG. 12, abstract) JP 2012-150886 A (FIG. 1, abstract)

  Although all of Patent Documents 1 to 3 have improvements in terms of wide light distribution, the arrangement of optical elements is complicated and redundant, and there is a demand for miniaturization (and weight reduction) and cost reduction of illumination lamps. It is not fully responded to.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a simple and low-cost illumination lamp and illumination device for achieving wide light distribution.

An illumination lamp according to the present invention includes a light source, a translucent outer portion that covers an emission side of the light source, and transmits light emitted from the light source, and an outer portion and a base portion are joined to both ends, and the outer portion A light source is mounted on the end face of the side, a commercial power supplied via the base part is converted into driving power for turning on the light source, and a casing part containing a lighting circuit that supplies the light source is emitted from the light source And an optical element having a second optical element part that causes at least one of light guide, diffusion, reflection, and transmission to light emitted from the light source. and Ri single piece der the optical element, the outer portion includes a first outer portion, the first outer portion is constituted by joining a second outer portion which is configured separately, the optical element Is formed integrally with the second outer portion .

  According to the present invention, wide light distribution can be achieved with a simple structure, and cost can be reduced.

It is a figure which shows the main structures of the illumination lamp which concerns on Embodiment 1 of this invention. It is a figure explaining the structure of the globe of FIG. 1 and an optical element. It is explanatory drawing of the optical path of the illumination lamp of FIG. It is a figure which shows the modification 1 of a structure of the glove | globe of FIG. 1, and an optical element. It is a figure which shows the modification 2 of a structure of the glove | globe of FIG. 1, and an optical element. It is a figure which shows the structural example of the illuminating device which concerns on Embodiment 2 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of drawing shown below. Moreover, the same code | symbol is attached | subjected to the same structure in each figure.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating a main configuration of an illumination lamp according to Embodiment 1 of the present invention. FIG. 1A is a partial perspective view of the illumination lamp as viewed from the front side, and FIG. 1B is a plan view as viewed from the top side of the globe 2 toward the base 4 side.
As shown in FIG. 1, the illumination lamp 100 is a light bulb-type illumination lamp having a light source 1, a globe 2 that is an outer shell, a casing 3, a base 4, an optical element 5, and a lighting circuit (not shown). .

  In the first embodiment, the light source 1 includes a light emitting diode (Light Emitting Diode, hereinafter referred to as an LED) 10 and a LED substrate 11 on which the LED 10 is mounted. In addition to the LED 10 and the LED substrate 11, the components of the light source 1 are electrically connected to a lighting circuit (not shown), and a wiring member (such as a wire harness or connector) that transmits driving power from the lighting circuit to the light source 1 ( (Not shown) and necessary electronic components according to the design specifications of the illumination lamp 100 are included.

  The globe 2 is made of a material that transmits light emitted from the light source 1 (for example, a material having translucency such as glass or resin), and is disposed so as to cover the light emission side of the light source 1. As the resin constituting the globe 2, for example, polycarbonate or acrylic is selected according to product specifications. In the example of FIG. 1, the globe 2 has a curved outer shape. The globe 2 has a function of diffusing, condensing and reflecting light according to the specifications of the illumination lamp 100. These functions are realized directly by the base material itself by forming a diffusion layer (or surface), a lens, a reflective layer (or surface), etc. when molding the glass or resin that is the base material of the globe 2. Alternatively, another member that realizes these functions may be combined on the surface of the base material.

  The casing 3 includes a resin casing 30 that houses a lighting circuit (not shown) therein, and a metal casing 31 that is attached to the outside of the resin casing 30. The resin casing 30 is formed using a resin material such as polycarbonate or acrylic, ceramic, or the like. The resin casing 30 has a space inside, and a lighting circuit (not shown) is included and held in this space. The metal casing 31 is formed using a metal material such as iron or aluminum.

The globe 2 and the casing 3 (the metal casing 31 thereof) are joined by an arbitrary joining means. For example, the following methods (1) to (4) can be used.
(1) A method of bonding the opening end of the globe 2 and the end of the metal casing 31 using an adhesive member or the like.
(2) A method of joining the opening end of the globe 2 and the end of the metal housing 31 using a screw or the like.
(3) A method in which the opening end of the globe 2 and the end of the metal casing 31 are screwed together.
(4) A method in which a locking structure (such as a concave portion and a convex portion, a claw portion and a claw receiving portion) is provided at the opening end portion of the globe 2 and the end portion of the metal housing 31 and joined.

  The base portion 4 has a structure in which one end is fitted into a socket 160 of a lighting device 150 (see, for example, FIG. 6 described later), and an input end that inputs commercial power to the lighting lamp 100 via the lighting device 150. It is. The other end of the base part 4 is fitted into the casing part 3, and commercial power is supplied to a lighting circuit (not shown) through the base part 4.

  In the example of FIG. 1, the light source 1 is attached to the end surface of the metal housing 31 opposite to the base 4, and the globe 2 is attached to the metal housing 31 so as to cover the light emission surface of the light source 1. It is attached. When the casing 3 having the resin casing 30 and the metal casing 31 and the globe 2 are combined, they form the outer shape of a light bulb shaped illumination lamp as a whole. Moreover, the housing | casing part 3 is joined to the nozzle | cap | die part 4 in one end side, and is joined to the glove 2 in the other end side.

  The lighting circuit (not shown) has an AC-DC converter circuit that converts AC power, which is commercial power, into direct current that drives the LED 10. The lighting circuit (not shown) converts the commercial power input from the base unit 4 into driving power for lighting the light source 1 and supplies the driving power to the light source 1. Preferably, the lighting circuit (not shown) includes a load fluctuation detection function, a control function for controlling the drive current output from the AC-DC converter circuit according to the load fluctuation, and commercial power in order to drive the LED 10 stably. And a filter function for removing or reducing noise flowing in and / or out through the supply path.

FIG. 2 is a diagram illustrating the configuration of the globe and the optical element in FIG. Hereinafter, the optical element 5 will be described with reference to FIGS. 2 and 1.
The optical element 5 includes a reflection part (first optical element part) 50 and a light guide part (second optical element part) 51. The reflection part 50 has an optical characteristic that reflects substantially all of the light incident on the surface thereof (substantially total reflection), and is disposed so as to face the LED substrate 11. The reflection part 50 is comprised by plate shape, and the outer-periphery edge part protrudes outward of the globe 2 as shown in FIG.1 (b). The light guide unit 51 has optical characteristics that cause light incident on the surface thereof to perform actions such as light guide, diffusion, reflection, and transmission. These optical characteristics are determined based on the product specifications of the illumination lamp 100. The light guide unit 51 is fixed to the surface of the reflection unit 50 on the LED substrate 11 side, and is formed in a substantially truncated cone shape that protrudes toward the LED side.

  The optical characteristics of the globe 2 and the optical element 5 may be obtained by processing the surface of the molded resin material, or a material that obtains an action such as light guide, diffusion, reflection, and transmission is mixed with the resin material in advance. Then, the globe 2 and the optical element 5 may be molded.

  The optical element 5 is an integrally molded product that is integrally molded with the globe 2. In this respect, it is preferable to use a resin material for the optical element 5 (and the globe 2).

  Each of the reflecting portion 50 and the light guide portion 51 of the optical element 5 substantially perpendicular to the axis of the illumination lamp 100 has a substantially circular cross section as shown in FIG. However, the cross-sectional shape of the globe 2 and the casing 3 of the illumination lamp 100 is not limited to a substantially circular shape (a polygon may be used).

  The maximum diameter of the optical element 5 is set to be equal to or less than the maximum diameter R of the outline of the illumination lamp 100. This satisfies the dimensional conditions that can be attached to a conventional lighting fixture, that is, when the lighting lamp 100 is replaced, interference with the lighting fixture is prevented. Conventionally, it is possible to share the individual packaging (box) specifications with the same dimensions as the illumination lamp, which is preferable from the viewpoint of distribution cost. In addition, the dimensions and outer shape of the reflection unit 50 and the light guide unit 51 are determined based on the product specifications of the illumination lamp 100.

  By the way, when the LED substrate 11 is bonded to the outer surface of the housing part 3 (metal housing 31) only with an adhesive member such as an adhesive or an adhesive tape, a phenomenon such as dripping or peeling due to thermal stress or deterioration with time may occur. Is assumed. In order to avoid this phenomenon, the outer peripheral end of the light guide unit 51 on the reflective unit 50 side is extended to the LED mounting surface of the LED substrate 11 so as not to interfere with the LED 10, and the LED substrate 11 is pressed by the extended tip. You may make it do.

  In addition, the number and layout of LED10 mounted in the center part and peripheral part of LED board 11 are not limited to FIG.

FIG. 3 is an explanatory diagram of an optical path of the illumination lamp of FIG.
Light emitted from the LED 10 in the illumination lamp 100 is reflected by the reflecting portion 50 and irradiated in the direction opposite to the top of the globe 2, reflected by the reflecting portion 50 and irradiated to the side, and passes through the optical element 5 as it is. Irradiated from the outside. In this way, the illumination lamp 100 is an omnidirectional illumination lamp in which the light distribution angle exceeds 180 ° and the light orientation is achieved.

  As described above, according to the first embodiment, since the optical element 5 is formed integrally with the globe 2, the configuration is simple compared to the case where the optical element 5 is configured separately, and the number of parts can be reduced. The assembling process can be simplified and the cost can be reduced. Moreover, since the arrangement configuration of the optical element 5 is simple, it can contribute to the miniaturization (and weight reduction) of the illumination lamp 100.

  Further, since the optical element 5 is formed integrally with the globe 2, the dimension and arrangement of the optical element 5 can be selected without being influenced by the dimension of the LED 10.

  Moreover, since the outer peripheral edge part of the reflection part 50 protrudes to the outer side of the globe 2, heat can be radiated also from the reflection part 50, and heat dissipation can be improved.

  The illumination lamp 100 is not limited to the structure shown in FIG. 1 and can be variously modified as follows without departing from the gist of the present invention. In this case, the same effect can be obtained.

(Modification 1)
FIG. 4 is a diagram illustrating a first modification of the configuration of the globe and the optical element in FIG. 1.
As shown in FIG. 4, the globe 2 is separated into a direction perpendicular to the optical axis O, and is configured as a separate body of a first globe (first outer portion) 21 and a second globe (second outer portion), When the illumination lamp 100 is configured, it may be joined. The first globe 21 and the second globe 22 are not limited to having the same optical characteristics, and may have separate optical characteristics. For example, the first globe 21 is set to have a relatively high light transmittance, and the second globe 22 is set to have a relatively low light transmittance so that they have different optical characteristics. Also good.

  The optical element 5 is an integrally molded product formed integrally with the second globe 22. Hereinafter, an integrally molded product in which the second globe 22 and the optical element 5 are integrated is referred to as a second globe body 23. The 1st globe 21 and the 2nd globe body 23 are joined by arbitrary joining means. As arbitrary joining means, the following methods (1) to (4) can be used, for example.

(1) A method of bonding the opening end 21a on the optical element 5 side of the first globe 21 and the end 23a on the first globe 21 side of the second globe body 23 using an adhesive member or the like.
(2) A method of joining the opening end 21a on the optical element 5 side of the first globe 21 and the end 23a on the first globe 21 side of the second globe body 23 using a screw or the like.
(3) A screw thread and a screw groove are formed and screwed into the opening end 21a on the optical element 5 side of the first globe 21 and the end 23a on the first globe 21 side of the second globe body 23, respectively. Method.
(4) The opening end 21a on the optical element 5 side of the first globe 21 and the end 23a on the first globe 21 side of the second globe body 23 are locked together (concave and convex, claw and claw). A method of joining using a receiving part.

(Modification 2)
FIG. 5 is a diagram illustrating a second modification of the configuration of the globe and the optical element in FIG. 1.
In the first modification, the optical element 5 is integrated with the second globe 22, but in the second modification, the optical element 5 is integrated with the first globe 21. Hereinafter, an integrally molded product in which the first globe 21 and the optical element 5 are integrated is referred to as a first globe body 24. The joining means of the 1st globe body 24 and the 2nd globe 22 is the same as that of the above-mentioned modification 1, and methods, such as the following (1)-(4), can be used.

(1) A method of bonding the opening end 22a on the optical element 5 side of the second globe 22 and the end 24a on the second globe 22 side of the first globe body 24 using an adhesive member or the like.
(2) A method in which the opening end 22a on the optical element 5 side of the second globe 22 and the end 24a on the second globe 22 side of the first globe body 24 are joined using screws or the like.
(3) A screw thread and a screw groove are formed and screwed into the hole end 22a on the optical element 5 side of the second globe 22 and the end 24a on the second globe 22 side of the first globe body 24, respectively. Method.
(4) The opening structure 22a of the second globe 22 on the optical element 5 side and the end section 24a of the first globe body 24 on the second globe 22 side are engaged with each other (recesses and protrusions, claws and claws). A method of joining using a receiving part.

Embodiment 2. FIG.
Embodiment 2 relates to an illumination device to which the illumination lamp 100 is applied.

FIG. 6 is a diagram illustrating a configuration example of a lighting apparatus according to Embodiment 2 of the present invention.
The illumination device 150 is provided in the illumination lamp 100, the appliance main body 170 containing the illumination lamp 100, the socket 160 to which the cap portion 4 of the illumination lamp 100 is attached, and the appliance main body 170, and is emitted from the illumination lamp 100. And a reflector 180 that reflects light. The lighting device 150 shown in FIG. 6 is a lighting device that is inserted into a fixture mounting portion 190 formed on the ceiling and illuminates the room from the ceiling side. In addition to such a ceiling-mounted illumination device, for example, the illumination lamp 100 can be applied to an illumination device installed on a wall or an illumination device placed on a table.

  Note that a laser diode other than an LED or an organic EL may be used as the light emitting means (light emitting element) of the light source 1. At that time, the lighting circuit is designed in accordance with the characteristics of the respective light emitting means.

  DESCRIPTION OF SYMBOLS 1 Light source, 2 globe, 3 housing | casing part, 4 nozzle | cap | die part, 5 optical element, 10 LED, 11 LED board, 21 1st globe, 21a opening edge part, 22 2nd globe, 22a opening edge part, 23 1st 2 globe body, 23a end, 24 1st globe body, 24a end, 30 resin casing, 31 metal casing, 50 reflector, 51 light guide, 100 illumination lamp, 150 illumination device, 160 socket, 170 fixture Main body, 180 reflector, 190 Instrument mounting part.

Claims (5)

A light source;
A light-transmitting outer portion that covers an emission side of the light source and transmits light emitted from the light source;
The outer part and the base part are joined to both ends, the light source is placed on the end surface on the outer part side, and commercial power supplied via the base part is used as driving power for lighting the light source. A housing portion containing a lighting circuit for converting and supplying the light source;
An optical element having a first optical element portion that reflects light emitted from the light source, and a second optical element portion that causes at least one of light guide, diffusion, reflection, and transmission to light emitted from the light source; With
Ri single piece Dare and the optical element and the outer portion,
The outer portion is formed by joining a first outer portion and a second outer portion formed separately from the first outer portion, and the optical element is integrated with the second outer portion. An illumination lamp characterized in that it is formed . A light source;
A light-transmitting outer portion that covers an emission side of the light source and transmits light emitted from the light source;
The outer part and the base part are joined to both ends, the light source is placed on the end surface on the outer part side, and commercial power supplied via the base part is used as driving power for lighting the light source. A housing portion containing a lighting circuit for converting and supplying the light source;
An optical element having a first optical element portion that reflects light emitted from the light source, and a second optical element portion that causes at least one of light guide, diffusion, reflection, and transmission to light emitted from the light source; With
The outer portion and the optical element are integrally molded products,
The outer portion is formed by joining a first outer portion and a second outer portion formed separately from the first outer portion, and the optical element is integrated with the first outer portion. lighting lamp, characterized in that it is formed. 3. The illumination lamp according to claim 1, wherein the first optical element portion is formed in a plate shape, and an outer peripheral edge portion protrudes outward from the outer portion. 4. A light source;
A light-transmitting outer portion that covers an emission side of the light source and transmits light emitted from the light source;
The outer part and the base part are joined to both ends, the light source is placed on the end surface on the outer part side, and commercial power supplied via the base part is used as driving power for lighting the light source. A housing portion containing a lighting circuit for converting and supplying the light source;
An optical element having a first optical element portion that reflects light emitted from the light source, and a second optical element portion that causes at least one of light guide, diffusion, reflection, and transmission to light emitted from the light source; With
The outer portion and the optical element are integrally molded products,
Wherein the first optical element unit is configured in a plate shape, lighting lamp, characterized in that the outer peripheral edge portion projects outwardly of the outer portion. An illumination device comprising the illumination lamp according to any one of claims 1 to 4.

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