CN108548134A - Lighting device - Google Patents

Abstract

The present invention provides a kind of lighting device, can inhibit dazzle and improve performing effect.Lighting device includes：Apparatus body is formed with opening in center；Light source portion, a plurality of light-emitting elements are equipped in a manner of around opening；And the lampshade of translucency, in a manner of covering the front-surface side of apparatus body of the opening containing light source portion and apparatus body, and be mounted on apparatus body, lampshade is the relatively small region of transmitance of the light to be irradiated from light-emitting component, be mixed with the relatively large region of transmitance of light in a manner of and be integrally formed.Lampshade is made of transparent resin base material.The relatively small region of transmitance of the light of lampshade is the inner face side coating ink in lampshade and is formed.The relatively large region of transmitance of the light of lampshade is formed by uncoated ink, is also formed in against the region of light-emitting component.Ratio shared by the relatively small region of transmitance of the light of lampshade is more than the ratio shared by the relatively large region of transmitance of the light of lampshade.

Description

lighting device

This application is the original application number 201310104821.5, the application date is March 28, 2013 (priority date is August 31, 2012, September 10, 2012), and the title of the invention is a divisional application of "lighting cover and lighting device" .

technical field

An embodiment of the present invention relates to a lighting device using a light emitting element such as a light emitting diode (hereinafter referred to as an LED (Light Emitting Diode)) as a light source.

Background technique

Recently, along with higher output and higher efficiency of LEDs, lighting devices using LEDs as light sources have been developed, which can be used indoors or outdoors and can be expected to have a longer life. This lighting device is obtained by mounting a plurality of LEDs on a board to obtain a predetermined brightness, and is used, for example, as a ceiling light for ordinary houses mounted on a ceiling surface or the like.

In this kind of lighting device, since the brightness of the LED as the light source is high, and the directivity of the emitted light is strong, etc., in order to disperse and radiate the light uniformly, a diffuser (shade) is arranged on the front surface side of the LED. )).

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2009-117160

However, with the diversification of lifestyles, as a function required of these lighting devices, it is desired not only to simply illuminate the surroundings, but also to design the light to improve the performance effect, so that it can be improved as a lighting device. additional value.

Contents of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting device capable of suppressing glare to enhance the performance effect of sparkle, and to increase added value as a creative lighting device.

The present invention proposes an illuminating device, comprising: an appliance body, an opening is formed in the center of the appliance body; a light source portion is provided with a plurality of light-emitting elements surrounding the opening; a translucent lampshade, The front surface side of the appliance body including the opening of the light source part and the appliance body is covered, and is mounted on the appliance body, and the lampshade is a light-transmitting lens for the light irradiated from the light emitting element. A region with a relatively small transmittance and a region with a relatively high light transmittance are mixed and formed integrally, wherein the lampshade is made of a transparent resin base material, and the light transmittance of the lampshade is The relatively small area is formed by coating the inner surface of the lampshade with ink, and the area with relatively high light transmittance of the lampshade is formed by not applying ink, and is also formed on the opposite side of the lampshade. The area of the light-emitting element, and furthermore, the proportion of the area of the lampshade with a relatively small light transmittance is greater than the proportion of the area of the lampshade with a relatively high light transmittance.

In one embodiment, the visible light transmittance of the region other than the relatively high light transmittance region of the globe is 80% or less.

In one embodiment, the lighting device further includes: a diffusion member integrally formed in an annular shape along the arrangement of the light emitting elements.

The effect of the invention

According to the embodiments of the present invention, it is possible to provide a lighting device capable of suppressing glare to enhance performance effects and increase added value as a lighting device.

Furthermore, according to an embodiment of the present invention, it is possible to provide a lighting cover and a lighting device that can increase added value as a lighting device that does not lower the illuminance of the irradiation surface.

Description of drawings

FIG. 1 is a perspective view showing a lighting device according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view showing the lighting device according to the embodiment of the present invention.

Fig. 3 is a schematic plan view showing a cover member and a lighting device cover removed, viewed from below, in the lighting device according to the embodiment of the present invention.

Fig. 4 is a cross-sectional view showing a lighting fixture according to an embodiment of the present invention.

Fig. 5 is an enlarged cross-sectional view showing part A in Fig. 4 .

Explanation of symbols

1: Ontology

2: Light source department

3: Diffusion member (lens member)

4: lighting device

5: Lighting device cover

6: Mounting part (adapter guide part)

7: lampshade

11: opening

12: flat part

13: Step difference department

14: concave part

15: Elastic member

21: Substrate

22, 22a: light emitting element (LED)

31: protruding part

33: flat part

41: Circuit board

42: circuit parts

51: side wall

52: front wall

53: opening

61: Snap-in port

62: Electrical Auxiliary Parts

71a: Area with relatively small light transmittance

71b: Area with relatively large light transmittance

75: Lampshade catcher

A: Adapter

A1: locking part

C: Appliance installation surface (ceiling surface)

Cb: wiring device (main body of ceiling lamp holder)

S: screw

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5 . In each drawing, the wiring connection relationship via wires or the like is sometimes omitted. In addition, the same code|symbol is attached|subjected to the same part, and repeated description is abbreviate|omitted.

The lighting fixture according to the present embodiment is a lighting fixture for ordinary residences which is mounted on a ceiling lamp holder main body provided on a fixture mounting surface as a lighting fixture for indoor lighting by light emitted from a light source unit. In the wiring device, the light source unit has a plurality of light emitting elements mounted on a substrate.

In FIGS. 1 to 4 , the lighting fixture includes a main body 1 , a light source unit 2 , a diffusion member (for example, a transmissive refraction member) 3 , a lighting device 4 , a lighting device cover 5 , a mounting unit 6 and a lamp cover 7 . And the lighting fixture is equipped with the adapter A electrically and mechanically connected to the ceiling socket main body Cb provided in the ceiling surface C which is a fixture mounting surface. Such a lighting fixture has a circular appearance, the front side is used as a light irradiation surface, and the back side is used as an attachment surface to the ceiling surface C. As shown in FIG.

The main body 1 is a circular chassis (chassis) formed from a flat plate of a metal material such as cold-rolled steel plate, and a circular opening 11 is formed in a substantially central portion. . Further, on the outer peripheral side of the flat portion 12 on the inner side to which the light source unit 2 is attached, a step portion 13 toward the back side and a groove-shaped concave portion 14 are formed. Furthermore, an elastic member 15 is provided on the back side of the main body 1 .

The light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21 (in FIG. 2 , the illustration of the light emitting elements 22 is omitted). The board|substrate 21 is arrange|positioned so that four circular-arc-shaped board|substrates 21 which have predetermined width dimension may abut, and are formed in substantially circular shape as a whole. That is, the substantially annular substrate 21 as a whole includes four divided substrates 21 .

By using the substrate 21 divided in this way, thermal shrinkage can be absorbed by the divided portion of the substrate 21 and deformation of the substrate 21 can be suppressed. In addition, although it is preferable to use the board|substrate 21 divided into several pieces, it is also possible to use the board|substrate integrally formed in substantially circular ring shape.

The substrate 21 is a flat plate made of glass epoxy resin (FR-4) as an insulating material, and a wiring pattern (pattern) is formed with copper foil on the surface side. Furthermore, on the wiring pattern, that is, on the surface of the substrate 21, a white resist (resist) layer functioning as a reflective layer is applied. In addition, when an insulating material is used as the material of the substrate 21, a ceramics material or a synthetic resin material can be applied. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one side of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation is applicable.

The light emitting element 22 is an LED, and is a surface mount type LED package. The LED packages are mounted along the circumferential direction of the plurality of annular substrates 21, that is, on the approximate circumference centered on the mounting portion 6, and are mounted over a plurality of rows. Side these 2 columns while installing. In addition, as the LED packages, LED packages with daylight white light emission color and light bulb color LED packages are used, and these LED packages are arranged alternately, and adjacent light emitting elements 22 in each row are arranged at substantially equal intervals. Toning can be performed by adjusting the current or the like flowing through the daylight white LED package and the lightbulb color LED package.

In addition, a light-emitting element 22a for an always-on lamp is mounted on a specific substrate 21 (right side in FIG. 3 ). For this light emitting element 22a, the same LED package as the lightbulb-color LED package mounted in the ring-shaped main light source is used. Thereby, commonality of components is realized.

In addition, the light emitting elements 22 do not necessarily need to be mounted in multiple rows. For example, they may be installed in one row along the circumferential direction. The number of columns or the number of light emitting elements 22 can be appropriately set according to the required output.

The LED package generally includes: an LED chip (chip), which is arranged on a body formed of ceramics or synthetic resin; and a light-transmitting resin for molding (mold) such as epoxy resin or silicone resin, The LED chip is sealed. The LED chip is a blue LED chip that emits blue light. Phosphor is mixed into the light-transmitting resin so that it can emit daytime white or bulb-colored light.

In addition, LED chips can be directly mounted on the substrate 21 , and can also be mounted as cannonball-shaped LEDs, and the mounting method or form is not particularly limited.

The diffusion member 3 is a lens member, for example, made of insulating transparent synthetic resin such as polycarbonate or acryl resin, and has reinforced insulation performance. Further, the diffusion member 3 is integrally formed in a substantially annular shape along the arrangement of the light emitting elements 22 , and is arranged to cover the entire surface of the substrate 21 including the light emitting elements 22 .

In addition, the lens member has two mountain-shaped protrusions 31 with a constant cross-sectional shape formed continuously in the circumferential direction on the inner and outer peripheral portions of the substantially annular shape facing the light emitting element 22 . Therefore, the U-shaped groove 32 is arranged to face the plurality of light-emitting elements 22 , and the plurality of light-emitting elements 22 are accommodated in the U-shaped groove 32 and covered.

Further, flat portions 33 extending in the width direction are formed from these protrusions 31 , thereby covering the entire surface of the substrate 21 .

According to the lens member configured in this way, as shown in FIG. 5 , the light emitted from the plurality of light emitting elements 22 is mainly diffused and radiated in the inner and outer peripheral directions on the circumference by the protrusions 31 . That is, the light emitted from the light emitting element 22 is diffused and radiated mainly in a radial direction with the center of the ring shape where the light emitting element 22 is arranged as the origin.

Therefore, the uniformity of the irradiation light of the light emitted from the plurality of light emitting elements 22 can be improved by the lens member. Furthermore, it is possible to suppress the graininess due to the luminance of each light emitting element 22 . In this case, it is desirable to set the light distribution angle by diffusion to about 120° to 160°.

Furthermore, since the flat portion 33 is formed on the diffusion member 3 so as to cover the entire surface of the substrate 21, the charging portion is covered and protected by the diffusion member 3 having reinforced insulation performance.

In addition, the diffusion member 3 may not be integrally formed in a substantially annular shape. For example, the diffusion member 3 may be formed separately for each of the divided substrates 21 corresponding to the divided substrates 21 . At this time, each of the plurality of light emitting elements 22 mounted on one substrate 21 is continuously covered with the diffusion member 3 .

Furthermore, the diffusion member 3 is not limited to a lens member, and a prism or the like may be applied so that the diffusion member 3 has anisotropy in the irradiation range of the light emitting element 22 .

As typically shown in FIGS. 4 and 5 in the light source unit 2 configured as above, the substrate 21 is located around the mounting portion 6 , and the mounting surface of the light emitting element 22 is arranged facing the front side, ie, facing the downward irradiation direction. Furthermore, the back surface side of the substrate 21 is mounted in close contact with the flat portion 12 on the inner surface side of the main body 1 . Specifically, the diffusion member 3 is overlapped from the front surface side of the substrate 21, and the diffusion member 3 is mounted on the main body 1 by a fixing device such as a screw S, so that the substrate 21 is sandwiched between the main body 1 and the diffusion member 3. spaced and secured by compression. That is, the board|substrate 21 and the diffusion member 3 are fastened with one screw S. As shown in FIG.

Therefore, the substrate 21 is thermally bonded to the main body 1, and the heat from the substrate 21 is conducted from the back side to the main body 1 and dissipated. In addition, the surface contact between the substrate 21 and the body 1 is not limited to the case where the entire surface of the substrate 21 contacts the body 1 . Partial surface contact is also possible.

In addition, since the flat portion 33 of the diffusion member 3 is in close contact with the mounting surface side of the substrate 21, the heat can be transferred from the mounting surface side of the substrate 21 to the diffusion member 3, and then dissipated via the diffusion member 3. distribute. That is, it is also possible to dissipate heat from the front surface side of the substrate 21 .

As shown in FIGS. 2 to 4 , the lighting device 4 includes a circuit board 41 and circuit components such as a control integrated circuit (Integrated Circuit, IC), a transformer (transformer), and a capacitor (condenser) mounted on the circuit board 41. 42. The circuit board 41 is formed in a substantially arc shape so as to surround the mounting portion 6 , is electrically connected to the adapter A side, and is connected to a commercial AC power supply via the adapter A. Therefore, the lighting device 4 receives the AC power supply to generate a DC output, and supplies the DC output to the light emitting element 22 via a wire to control the lighting of the light emitting element 22 .

Such a lighting device 4 is disposed between the mounting portion 6 and the light source portion 2 (ie, the substrate 21 ).

As shown in FIGS. 2 and 4 , the lighting device cover 5 is formed in a substantially short cylindrical shape from a metal material such as cold-rolled steel sheet, and is attached to the main body 1 so as to cover the lighting device 4 . The side wall 51 is inclined so as to expand toward the rear side, and the front wall 52 is formed with an opening 53 corresponding to the mounting portion 6 . Therefore, part of the light emitted from the light emitting element 22 is reflected by the side wall 51 toward the front surface side, and is effectively used. In addition, an arc-shaped guide concave portion concave toward the back side is formed on the peripheral edge of the opening portion 53 .

The attachment part 6 is an adapter guide formed in a substantially cylindrical shape, and an engaging opening 61 through which the adapter A is inserted and engaged is provided at the center of the adapter guide. The adapter guide portion is arranged corresponding to the opening 11 formed in the central portion of the main body 1 . A base is formed on the outer circumference of the adapter guide so as to protrude from the outer circumference, and electrical auxiliary parts such as an infrared remote control signal receiving unit and an illuminance sensor (sensor) are arranged on the base. 62.

In addition, the attachment part 6 does not necessarily have to be what is called an adapter guide part etc. FIG. For example, it may be an opening formed in the main body 1 etc., and mainly refers to a member or part that faces the ceiling lamp holder main body Cb as a wiring fixture and engages the adapter A.

The shade 7 is formed in a substantially circular shape from a light-transmitting, milky-white, diffusible material such as acrylic resin.

Furthermore, the globe 7 is detachably attached to the outer peripheral portion of the main body 1 so as to cover the front side of the main body 1 including the light source unit 2 . Specifically, by turning the shade 7 , the shade mounting member provided on the shade 7 is engaged with the shade receiving member 75 disposed on the outer peripheral edge of the main body 1 . The recess 14.

A light transmission control portion 71 is formed on the inner surface of the globe 7 . The light transmission control portion 71 is formed so that a region 71a having a relatively low light transmittance and a region 71b having a relatively high light transmittance are mixed.

Specifically, the light transmission control part 71 is formed by performing silk printing on the inner surface of the lampshade 7, and in the region 71a with a relatively small light transmittance, a plurality of areas with a relatively high light transmittance are formed. area 71b. The region 71a with a relatively small transmittance of light is, for example, a portion coated with white ink (ink), and the region 71b with a relatively large transmittance of light is a portion not coated with white ink, which is coated with ink. In the area covered with white ink, it is formed by scattering many (innumerable) small circles.

That is, on the inner surface side of the globe 7 , a plurality of small circular portions are left to apply and print white ink.

Therefore, the transmission of light irradiated to the region 71a with a relatively small light transmittance is suppressed, and the transmission of light irradiated to the region 71b with a relatively large light transmittance, that is, to a plurality of small circular parts, is suppressed. can be performed well.

Here, the light transmittance is relatively small and relatively large refers to the relative relationship with the regions 71a and 71b. For example, the region 71a with a relatively small light transmittance is often formed with a predetermined transmittance. In some cases, the irradiated light from the light source unit 2 is diffused and irradiated to the downward irradiated surface, but there may be cases where the irradiated light is hardly transmitted, that is, substantially impermeable.

That is, the region other than the region 71b in which the light transmittance of the globe is relatively large is formed to have translucency, be milky white, and have diffusivity.

In addition, in the molding of the globe 7, a plurality of small circular parts (parts not coated with ink) are formed on the back side of a sheet made of acrylic resin or the like as the material. Screen printing, followed by press forming into a predetermined shape of a substantially circular shape.

Furthermore, the region 71 a having a relatively small light transmittance and the region 71 b having a relatively high light transmittance may be formed in an opposite relationship. That is, a plurality of small circle-shaped portions may be formed as regions with relatively low light transmittance. In this case, it is only necessary to appropriately set the diameter of the small circle according to the design.

Furthermore, the region 71 b with a relatively high light transmittance may also be formed by a small hole penetrating inside and outside the lampshade 7 . In this case, it is also possible to form a region having a relatively low light transmittance mixed with a region having a high light transmittance.

In this way, the structure formed in such a manner that the regions 71a with relatively low light transmittance and the regions 71b with relatively high light transmittance are mixed can adopt various structures, and are not limited to specific ones. structure.

In addition, the distance between the diffusion member 3 and the globe 7 is set to 20 mm to 60 mm, preferably 30 mm to 50 mm. Accordingly, the uniformity of the irradiated light becomes good, and the heat conducted from the mounting surface side of the substrate 21 to the diffusion member 3 is efficiently dissipated via the globe 7 .

Furthermore, the globe 7 is a translucent film made of a resin sheet having a plurality of openings 71b formed on the inner surface of a transparent substrate including a mirror surface, for example, a transparent acrylic resin or the like. In addition, for a transparent acrylic resin, it is desirable that the internal transmittance of the acrylic resin and the external transmittance including the surface (interface) are high, or that the surface (interface) includes an optical mirror surface and is glossy. , High permeability material. That is, as long as the transparent acrylic resin has low diffusivity and can see through the lampshade 7 to see through the base material of an article located in front of it, it may be a prism-processed one whose surface is concavo-convex.

The light-transmitting film 71 a formed on the inner surface of the globe 7 is a white film formed by, for example, silk screen printing. The plurality of openings 71 b formed in the light-transmitting film 71 a are formed to have a size of approximately 0.5 mm to 5 mm in diameter. If the opening 71b is less than 0.5mm, the light passing through the opening 71b will be weak when the lampshade 7 is attached to the fixture body, and the ratio of the light emitting elements 22 existing on the straight line connecting the viewing point and the opening 71b will become less. Therefore, it is difficult to obtain light shining brilliantly from the light emitting element 22 through the opening 71b. On the other hand, if the opening 71b is 5 mm or more, there is a possibility that a plurality of light-emitting elements 22 will be irradiated from one opening 71b, and thus the feeling of dazzling rather than the feeling of sparkle may be felt. Therefore, ideally, the opening 71 b not subjected to screen printing is preferably smaller than the light emitting element 22 , and the opening diameter of the opening 71 b is optimally about 0.7 mm to 2 mm.

In addition, in the present embodiment, the formation region of the opening 71b is formed to cover at least the region facing the light emitting element 22 mounted along the circumferential direction of the annular substrate. That is, the opening 71 b is not formed in the central area surrounded by the light emitting elements 22 , that is, in the central area of the globe 7 . Furthermore, the openings 71 b of various sizes formed along the circumferential direction of the globe 7 covering widely the region facing the light emitting element 22 are randomly and densely formed. In the region where the opening 71b is formed, the ratio of the opening 71b to the light-transmitting film is preferably 0.3% to 0.6%. If the opening 71b is less than 0.3%, the ratio of no light-emitting element 22 on the straight line connecting the viewpoint and the opening 71b increases, so the number of openings 71b that cannot feel light increases, and the number of openings that emit light brightly increases. few. On the other hand, if the number of openings 71b exceeds 0.6%, there will be too many openings 71b that feel light, and fewer openings 71b that will not feel light. Therefore, compared with the flickering feeling caused by visually observing the flickering of the plurality of independent openings 71b irregularly by moving the viewpoint, the number of flickering is reduced, the feeling of glare, and the possibility of discomfort are increased. Therefore, it can be said that the formation area of the opening 71b is preferably 0.3% to 0.6% of the light-transmitting film. Furthermore, the proportion of openings 71b in the entire globe 7 in this embodiment is about 0.5%, and when no opening 71b is formed in the central region, the ratio of openings 71b in the entire globe 7 is preferably about 0.4%.

In addition, the transmittance of the screen-printed light-transmitting film of the globe 7 is preferably 40% to 80% or less. In this embodiment, the transmittance at a wavelength of 380 nm to 780 nm is set to about 60%. If the transmittance is 40% or less, the illuminance directly below will be low, and the luminous flux will be too low, making it difficult to use as a lighting fixture. Conversely, if the transmittance is 80% or more, the illuminance directly below is high, the light flux is sufficient, and the light from the light emitting element 22 is efficiently irradiated to the irradiation surface. However, the difference in luminance and illuminance between the opening 71b (light emitting surface luminance) and the screen-printed area, that is, the light-transmitting layer 71a area (background luminance) becomes small, so it is not possible to satisfy the brilliance caused by the light leaking from a plurality of openings. Shiny added value effect.

Thus, these conditions must be satisfied in order to provide a lighting fixture that ensures the illuminance required as a general lighting fixture and that has a sparkle feeling created by the non-screen-printed opening through the transparent lamp cover 7. It is caused by the irradiation light from the light emitting element 22 seen from the portion 71b.

Such a shade 7 is detachably attached to the outer peripheral portion of the main body 1 so as to cover the front side of the main body 1 including the light source unit 2 . Specifically, by turning the shade 7 , the shade mounting member provided on the shade 7 is engaged with the shade receiving member 75 arranged on the outer peripheral edge of the main body 1 . The recess 14.

In addition, the structure formed so that the opening part 71b of the globe 7 may mix with the light-transmitting layer 71a can adopt various structures, and is not limited to a specific structure. For example, an arrangement in which the openings 71 b are regularly arranged can also be adopted. Furthermore, a prism processing in which the surface is processed into a mirror surface may be performed at a position facing the region where the opening 71 b is formed in the globe 7 .

The adapter A is electrically and mechanically connected to the part of the ceiling lamp holder main body Cb provided on the ceiling surface C through a hook provided on the upper surface side, and has a substantially cylindrical shape; A pair of locking portions A1 are provided so as to always protrude toward the outer peripheral side by a built-in spring. This locking portion A1 is sunk by operating a lever provided on the lower surface side. And, a power cord (cord) connected to the lighting device 4 is derived from the adapter A, and is connected to the lighting device 4 via a connector (see FIG. 3 ).

Next, the mounting state of the lighting fixture to the ceiling surface C will be described with reference to FIG. 4 . First, the adapter A is electrically and mechanically connected to the ceiling lamp holder main body Cb preliminarily installed on the ceiling surface C. As shown in FIG. From this state, while aligning the engaging port 61 of the adapter guide portion of the mounting portion 6 with the adapter A, push up the appliance body from below until the locking portion A1 of the adapter A is securely engaged with the adapter guide portion. to the snap-in port 61 for installation. Then, the lampshade 7 is mounted to the body 1 . This installed state is the state shown in FIG. 4 , at this time, the elastic member 15 is interposed between the ceiling surface C and the back side of the main body 1 in a close contact state, and the lighting fixture is fixed to the ceiling surface C in a fixed state.

In addition, when detaching the lighting fixture, the shade 7 is removed, and the operation lever provided on the adapter A is operated to release the engagement of the locking portion A1 of the adapter A, thereby detaching the lighting fixture.

When the lighting fixture is mounted on the ceiling surface C, when power is supplied to the lighting device 4 , the light-emitting elements 22 are energized through the substrate 21 to light each light-emitting element 22 . The light emitted from the light emitting elements 22 is diffused in the radial direction by the diffusion member 3 that continuously covers the plurality of light emitting elements 22, and is radiated toward the front surface side. As for the light radiated to the front side, the light toward the light transmission control portion 72 of the globe 7 mainly passes through a plurality of small circular regions 71 b with relatively high light transmittance, and is irradiated through the globe 7 . At this time, the light irradiated from the light emitting element 22 is deflected, dispersed, and reflected by the diffusion member 3 , and is irradiated outward through the globe 7 toward each traveling direction.

When looking up at the irradiating light from the bottom of the lighting device, the light emitting element 22 will be seen directly through the region 71b which is arranged in a straight line with the light emitting element 22 and has a relatively high light transmittance, so that a strong sense of Light. On the other hand, even if there is no light source on the straight line connecting the region 71b with a relatively high light transmittance and the fulcrum, the light from the light emitting element 22 can be diffused by the diffusion member, and a weak light can be felt. Light. By using the diffusion member as a lens, the light from the light emitting element 22 can be viewed directly from various angles, so the frequency and intensity of the light can be increased.

According to such a structure, the opening 71b is configured such that when the viewing point, the light-emitting element 22, and the region 71b with relatively high transmittance are on a straight line, strong light is felt. When the diffused light from the light emitting element 22, the view point, and the region 71b with a relatively high transmittance are located on a straight line, the light with a weak sense of sparkle will be felt. In the presence of the light emitting element 22 and the diffused light from the light emitting element, no flickering light is perceived.

In this way, regardless of whether the lighting device is viewed from above or viewed from the side of the lighting device, there are mixed parts where the light-emitting element 22 is seen as dot-shaped light and shines brilliantly with intense light. 1. The portion where the light emitting element 22 shines brilliantly with weak light and the portion where the light is not felt, can be visually observed with the glare caused by the light emitting element 22 suppressed. In addition, by moving the point of view, the areas that feel the sparkle change the intensity of light or flash repeatedly, so that by changing the position of observation, the decorative effect that each part can show the intensity of sparkle brilliantly and irregularly can be obtained. Furthermore, the uniformity of the irradiated light can be improved by the light passing through the region 71a having a relatively small light transmittance. Furthermore, in the present embodiment, by using different light emitting elements 22 of two colors, the plurality of openings 71b can be seen to blink brightly by mixing white light of daytime white and light of bulb color. Thereby, in terms of designability, a more excellent effect can be obtained.

On the other hand, since the back side of the substrate 21 is in surface contact with the main body 1, the heat generated from the light emitting element 22 is efficiently conducted to the main body 1 and dissipated over a large area. Moreover, a stepped portion 13 is formed along the outer periphery of the substrate 21 near the outer peripheral side of the substrate 21 , so the heat dissipation area can be increased by the stepped portion 13 , thereby improving the heat dissipation effect of the outer peripheral portion of the main body 1 . In addition, the step portion 13 can play a reinforcing effect of the main body 1 .

Furthermore, since the lighting device 4 is disposed between the mounting portion 6 and the board 21 , the influence of the heat from the board 21 on the lighting device 4 is reduced. This is because the heat of the substrate 21 tends to be conducted toward the outer peripheral direction of the main body 1 and dissipated.

In addition, since the flat portion 33 of the diffusion member 3 is in surface contact with the mounting surface side of the substrate 21 , heat can also be dissipated from the mounting surface side of the substrate 21 via the diffusion member 3 from the front surface side. Furthermore, at this time, since the diffusion member 3 covers the entire surface of the substrate 21, the charged portion is protected.

As described above, according to the present embodiment, when the lighting device is looked up, the light can be seen to be designed and the light of the point light source shines brightly, and a decorative effect can be obtained, thereby enhancing the performance effect. Furthermore, it is possible to provide a lighting fixture capable of improving the uniformity of irradiated light by providing the diffusion member 3 that continuously covers the light emitting elements 22 .

In addition, this invention is not limited to the structure of each said embodiment, Various deformation|transformation is possible in the range which does not deviate from the summary of invention. For example, the shape of the region 71b with a relatively high light transmittance in the light transmission control part 71 is not limited to a circle, and the hole of the light transmission control part formed on the entire lampshade can also be patterned. Be applicable.

Claims (3)

1. a kind of lighting device, which is characterized in that including：

Apparatus body is formed with opening in the center of the apparatus body；

Light source portion is equipped with a plurality of light-emitting elements in a manner of around the opening；

The lampshade of translucency, to cover containing the light source portion and the apparatus body of the opening of the apparatus body The mode of front-surface side, and it is mounted on the apparatus body, the lampshade is the transmission of the light to be irradiated from the light-emitting component The relatively small region of rate is integrally formed with mode that the relatively large region of transmitance of light is mixed,

Wherein, the lampshade is made of transparent resin base material,

The relatively small region of transmitance of the light of the lampshade be the lampshade inner face side be coated with ink and formed,

The relatively large region of transmitance of the light of the lampshade is to be formed by uncoated ink, and be also formed in opposite direction In the region of the light-emitting component,

In turn, the ratio shared by the relatively small region of the transmitance of the light of the lampshade is more than the transmission of the light of the lampshade Ratio shared by the relatively large region of rate.

2. lighting device according to claim 1, which is characterized in that

The visible light transmittance in the region other than the relatively large region of the transmitance of the light of the lampshade is 80% or less.

3. lighting device according to claim 1, which is characterized in that further include：

Pervasion component is formed integrally as annular shape along the configuration of the light-emitting component.