JP2006019160A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device in which focusing, diffusion, and reflection of LED light are carried out efficiently and removal of optical spots, softness of light, energy saving, and high efficiency etc. are further improved. <P>SOLUTION: The emitting light of a plurality of LED elements 19 provided inside the case 2 is diffused by a first lens 20 as a first stage, then it is reflected and diffused by a reflection and diffusion member 14 as a second stage, and by focusing the light at one focusing point O on the center axis of an optical path forming member 15, the optical energy is stored sufficiently in the case 2 and then, the light is emitted to the outside from the opening part 30 efficiently through the space in the optical passage forming member 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an illuminating device using an LED (light emitting diode) as a light source, and more particularly to an illuminating device applied as a household lamp, a store lamp, an emergency lamp, a street lamp, a decoration lamp, and other various lamps.

  Conventionally, fluorescent lamps, incandescent lamps, and the like are commonly used as this type of lighting device, but there are problems such as high power consumption and short useful life of the light source.

  On the other hand, recently developed lighting devices using LEDs as light sources are characterized by low power consumption and long service life, and can be applied to various lighting devices from the viewpoint of energy saving and low cost. (For example, refer to Patent Documents 1 and 2).

  In these technologies, a plurality of LED elements are arranged outwardly at a portion corresponding to a filament of a conventional light bulb or the like, and light is efficiently emitted. However, since the light emitted from the LED elements is spindle-shaped narrow area irradiation light, when light emitted from a plurality of LED elements is applied as direct light, it becomes a point light source, and the boundary area between the light sources becomes a dark part, so-called Optical spots occur, and it is difficult to obtain a uniform lighting effect such as an incandescent bulb or a fluorescent lamp.

On the other hand, for example, in the field of vehicle lamps, by converging light emission by facing a plurality of LED elements at a predetermined angle, by dispersing light with a diffusion lens, or by reflecting and diffusing light with a concave mirror, Techniques for removing optical spots have been proposed (see, for example, Patent Documents 3, 4, 5, etc.).
JP 2002-304903 A JP 2003-281925 A JP 2001-332104 A JP 2002-100217 A Japanese Patent Laid-Open No. 2004-55482

  However, in the above-described LED light emission focusing, dispersion by a diffusion lens, or reflection reflection technology of light by a concave mirror, focusing, dispersion, reflection, etc. are performed in the immediate vicinity of the light source using a high-intensity LED element. It is configured to emit extremely intense light. For this reason, for example, as a technique for improving the energy saving, high efficiency, etc., which is gentle to the eyes with soft light applied as household lamps, store lamps, emergency lights, street lamps, decorative lamps and other various lamps Not suitable.

  The present invention has been made in view of such circumstances, and allows LED light to be efficiently focused, diffused, and reflected, thereby removing optical spots, softening light, saving energy, improving efficiency, and the like. It is an object of the present invention to provide a lighting device that is extremely effective as a household lamp, a store lamp, an emergency lamp, a street lamp, a decorative lamp, and other various lamps.

  Another object of the present invention is to provide an illuminating device that uses LEDs to produce more uniform light, is safe and economical, can extend the life of a light source, and can be easily replaced with a light source unit. And

  In order to achieve the above object, in the invention according to claim 1, a housing having an opening formed on one side surface, a plurality of LED elements provided around the opening in the housing, and the LEDs A lens that diffuses light emitted from the element toward the inside of the housing, and a curved plate that is provided inside the housing and reflects and diffuses the light emitted from the LED element diffused through the lens And a cylindrical light path forming member that communicates from the vicinity of the center of curvature of the reflection diffusing member to the opening, and the light that is reflected and diffused by the curvature of the reflection diffusing member is the light path forming member. The light beam converged at one point on the central axis of the light source, and the light focused at the one point is emitted to the outside from the opening of the housing through the space in the light path forming member. A lighting device is provided.

  In the invention which concerns on Claim 2, the some LED element provided by the housing | casing which formed the opening part in one side surface, the side surface adjacent to the said opening part in this housing | casing mutually opposingly, and this each LED element A lens that diffuses light emitted from the LED, a reflection diffusing member that is provided on the inner side of the housing so as to face the opening and reflects and diffuses light emitted from the LED element diffused through the lens, A plurality of points on the central axis of the light path forming member. There is provided an illuminating device characterized in that the light focused to each point is emitted to the outside from the opening of the housing through the space in the light path forming member.

  In the invention according to claim 3, a housing having an opening formed on one side surface, a plurality of LED elements provided on the side surface adjacent to the opening in the housing, and light emitted from each LED element is diffused And a reflection diffusing member that is provided inside the casing so as to face the opening and the LED elements, and reflects and diffuses light emitted from the LED elements diffused through the lens. The illumination device is characterized in that the reflection diffusing member is set so that the reflected and diffused light is emitted from the opening of the casing to be converged toward the outside.

  In the invention which concerns on Claim 4, the housing | casing which formed the opening part in one side surface, the some LED element provided in the side surface adjacent to the said opening part in this housing | casing, and the light emitted from each LED element are diffused And a reflection diffusing member that is provided inside the casing so as to face the opening and the LED elements, and reflects and diffuses light emitted from the LED elements diffused through the lens. The illumination device is characterized in that the reflection diffusing member is set so that the reflected and diffused light is emitted in a state of diffusing outward from the opening of the casing.

  In the invention which concerns on Claim 5, the lighting fixture in any one of Claims 1 thru | or 4 which provided the lens or cover which consists of a transparent or translucent member in the opening part of the said housing | casing is provided.

  According to a sixth aspect of the present invention, there is provided the lighting apparatus according to any one of the first to fifth aspects, wherein each of the LED light sources is configured as a unit that can be attached to and detached from the housing.

  In the invention which concerns on Claim 7, the opening of the said housing | casing and the unit of each said LED light source provide the lighting fixture in any one of the Claims 1 thru | or 6 comprised in the shape of a circle or an array.

  According to the present invention, after the light emitted from the plurality of LED elements provided in the housing is diffused as the first stage by the lens, the second stage of reflection diffusion is performed by the reflection diffusion member, and the light path forming member is formed. After focusing at one point or a plurality of points on the central axis of the light and sufficiently storing the light energy in the housing, it is efficiently discharged to the outside through the space in the light path forming member. By adopting the configuration, there are no optical spots from the LED light source, and the softness of light, energy saving, and high efficiency can be further enhanced.

  In addition, LEDs can be used to produce more uniform light, and can be safe and economical, extend the life of the light source, and can easily replace the light source unit.

  Therefore, it is possible to provide a lighting device that is extremely effective as a household lamp, a store lamp, an emergency lamp, a street lamp, a decoration lamp, and other various lamps.

  Hereinafter, embodiments of a lighting device according to the present invention will be described with reference to the drawings. In the following description, the case where the present invention is applied as a household ceiling lighting fixture will be described. However, various lighting fixtures such as store lamps, emergency lights, street lamps, decorations, etc. may be used by changing the size, orientation, shape, etc. It can be applied as a lighting fixture and other various lighting fixtures.

[First Embodiment (FIGS. 1 to 3)]
FIG. 1 is a longitudinal sectional view showing a first embodiment of a lighting device according to the present invention, and FIG. 2 is an exploded view showing components of the lighting device for each unit. FIG. 3 is a plan view showing the configuration of the LED power supply unit.

  As shown in FIGS. 1 and 2, the illuminating device 1 (1a) of this embodiment is roughly divided into a housing 2, a power supply circuit unit 3, a reflection diffusion unit 4, an LED power supply unit 5, and a light emission diffusion unit 6. Etc.

  The housing 2 is configured as a main body for incorporating the power supply circuit unit 3, the reflection diffusion unit 4, the LED power supply unit 5, and the light emission diffusion unit 6, and includes, for example, a horizontal disk-shaped top wall 2a and the ceiling wall 2a. A short cylindrical peripheral wall 2b that hangs down from the peripheral edge of the wall 2a.

  A through hole 7 for mounting the power supply circuit unit is formed at the center position of the top wall 2a. Further, the lower surface (one side surface) of the housing 2 is opened as a whole, and this opening becomes a small-diameter opening 30 by incorporating the light path forming member 15 of the reflection diffusion unit 4 as described later. It is formed.

  The power supply circuit unit 3 includes a power supply circuit board 8 that is fitted in parallel (horizontally) to the inner surface (lower face) of the top wall 2a of the casing 2, a transformer mounted on the lower face side of the power supply circuit board 8, and other components. A power supply circuit component 9 and a power supply terminal 10 mounted on the upper surface side of the power supply circuit board 8 are provided. The power supply terminal 10 is fitted and fixed in a through hole 7 provided in the top wall 2 a of the housing 2. In the illustrated example, the power supply terminal 10 is shown as a plug type for insertion, but may be a screw type that is screwed into a household socket or the like (not shown).

  Further, a connection terminal (for example, female connector) 11 (11 a) is connected to the end portion of the power supply circuit board 8 by a power supply wiring 12. The power supply circuit unit 3 composed of these components is detachably fixed to the housing 2 with screws or other fixing tools (not shown).

  The reflection diffusion unit 4 includes a ring-shaped base portion 13 joined to the lower end of the peripheral wall 2b of the housing 2, and a curved plate-shaped reflection diffusion member 14 (14a) integrally connected to the upper end edge of the base portion 13. The cylindrical light path forming member 15 is located below the center portion of the reflection diffusing member 14 and is connected to the base portion 13 by an arm (not shown).

  The reflection diffusing member 14 has a downward concave hemispherical shape, and the concave surface (lower surface) is a mirror surface or a surface having a surface finish roughness of a certain level or more colored in a bright color (for example, white, other light color), For example, it is a high-precision machined surface. The light path forming member 15 has a vertical cylindrical shape with upper and lower surfaces opened, and the inner peripheral surface thereof is a mirror surface or a surface roughness of a certain level or more colored in a bright color like the lower surface of the reflection diffusing member 14. It is a high-precision machined surface having a thickness.

  Similarly to the power supply circuit unit 3 described above, the reflection diffusion unit 4 made of these components is also detachably assembled and fixed to the housing 2 with screws and other fixing tools (not shown). The ring-shaped base portion 13 of the reflection diffusion unit 4 is joined to the lower end portion of the peripheral wall 2b of the housing 2 and constitutes a part of the housing 2 on the outer surface.

  As shown in FIG. 3 (plan view), the LED power supply unit 5 is configured as a ring-shaped member that is assembled in close contact with the lower inner peripheral position of the reflection diffusion unit 4. That is, the LED power supply unit 5 includes a channel-shaped peripheral frame member constituted by an outer peripheral ring wall 16, an inner peripheral ring wall 17 and a bottom wall connecting these lower ends, and a channel groove in the peripheral frame member. A disk-shaped LED board 18 provided on the LED board, a plurality of LED elements 19 arranged on the LED board 18 in a ring shape at a predetermined pitch corresponding to the required illuminance, and light diffusion covering each of the LED elements 19 Lens (first lens) 20 and a connection terminal (for example, male connector) 11 b coupled to the connection terminal 11 a of the power circuit board 8.

  The outer surface side of the outer peripheral ring wall 16 is closely fixed to the inner peripheral surface of the base portion 13 of the reflection diffusion unit 4 in a state where the vertical height is matched. Further, the upper end of the inner ring wall 17 is in contact with the lower end of the light path forming member 15 in the reflection diffusion unit 4 and becomes a part of the light path forming member 15 that forms a circular light path in plan view. And the internal-diameter cross-sectional area of the optical path formation member 15 comprised in this way turns into a cross-sectional area of the opening part 30 of this invention.

  The connection terminal 11 b that is a male connector is coupled to the connection terminal 11 a that is a female connector of the power circuit board 8. As a result, a power supply circuit as the illumination device 1 is formed, current can be supplied from a power supply (not shown) via the power supply terminal 10, and light emission by each LED element 19 is possible.

  Each LED element 19 is set with the light emitting surface facing upward, and a combination of the LED elements 19 constitutes an LED light source. The light L1 emitted upward from each LED element 19 is directed toward the inner surface of the reflection diffusion member 14 by the first lens 20 and diffused in the inner diameter side, outer diameter side, circumferential direction, and the like of the housing 2. The behavior of this light will be described in detail later.

  The light emitting diffusion unit 6 is configured as a cover made of, for example, a concave lens. For example, a constant radius portion on the outer peripheral side connected to the lower portion of the LED power supply unit 5 is a flat portion 21 having a constant thickness, and a portion corresponding to the opening 30 from which light is emitted is a concave lens (second lens) 22. It is configured as. In the second lens portion, light emitted from the inside of the housing 2 can be diffused.

  The LED power supply unit 5 and the light emission diffusion unit 6 are also detachably assembled and fixed to the housing 2 with screws or other fixing tools (not shown), similar to the reflection diffusion unit 4 and the power supply circuit unit 3 described above. .

  Next, the details of the behavior of light and the optical configuration therefor will be described with reference to FIG.

  Due to the assembly configuration of each unit described above, the lighting device 1 (1a) of the present embodiment is provided around the casing 2 in which the opening 30 is formed on one side surface (lower surface) and the opening 30 in the casing 1. The plurality of LED elements 19, the first lens 20 that diffuses the light L 1 emitted from each LED element 19 toward the inside of the housing 2, and the first lens 20 provided inside the housing 2. A curved plate-like reflection / diffusion member 14 that reflects and diffuses light emitted from each LED element 19 diffused through the light source, and a cylindrical light passage forming member that communicates from the vicinity of the center of curvature of the reflection / diffusion member 14 to the opening 30. 15 (including 13; the same applies hereinafter) and the second lens 22.

  With such a configuration, the curvature of the reflection diffusing member 14 is such that the reflected and diffused light L2 is focused on one point O on the central axis of the light path forming member 15 (hereinafter referred to as “focusing point”). It is set. Then, the light L3 after being focused on the one focusing point O is emitted to the outside from the opening 30 of the housing 2 through the space in the light path forming member 15.

  That is, in the lighting device 1 of the present embodiment, light is emitted from each LED element 19 by supplying current from the LED power supply unit 5 to each LED element 19. In this case, since each LED element 19 is disposed around the opening 30 of the housing 2 and is isolated from the opening 30 by the light path forming member 15, the light L1 emitted from each LED element 19 is It is diffused upward by the first lens 20. Various diffusion directions can be set according to the shape and type of the first lens 20. In the present embodiment, the light L1 diffuses in the radial direction and the circumferential direction in the housing 2 as described above.

  Next, the light L1 reaches the concave reflection diffusing member 14 having a downward hemispherical shape, is reflected in multiple directions corresponding to the direction of each light L1 from the first lens 20, and is reflected and diffused in the second stage. It becomes light L2. In the present embodiment, the light L2 is set to converge at one converging point O that is the inward position of the housing 2 on the central axis of the light path forming member 15 due to the curvature of the reflection diffusing member 14. Finally, a lot of light L2 is focused on this focusing point O.

  And the light L3 after converging to the condensing point O is filled in the closed space in the housing | casing 2 enclosed by the reflection-diffusion member 14 and the optical path formation member 15, and while becoming high energy, each LED element 19's The shape of the point light source disappears. As a result, the light L3 is soft and free of optical spots, passes downward through the optical path forming member 15, passes through the second lens 22 in the opening 30, and is emitted to the outside.

  In this case, in the present embodiment, the second lens 22 is configured as a concave lens, and the focusing point O is on the central axis of the light path forming member 15, so the light L3 from the focusing point O is directed downward. In addition, the light L3 emitted from the focusing point O is also refracted by the action of the concave lens, and as a result, most of the light L3 is emitted in parallel downward.

  With the above operation, according to the present embodiment, the light emitted from the plurality of LED elements 19 provided inside the housing 2 is diffused as the first stage by the first lens 20, and then the second light is diffused by the reflection diffusion member 14. After performing stepwise reflection diffusion and focusing at one focusing point O on the central axis of the light path forming member 15, the light energy is sufficiently stored in the housing 2. It can be efficiently discharged from the opening 30 through the space. Therefore, there is no optical spot from the LED element 19, and the softness of light, energy saving, and high efficiency can be further enhanced.

  In the present embodiment, the housing 2, the power supply circuit unit 3, the reflection diffusion unit 4, the LED power supply unit 5, the light emission diffusion unit 6 and the like are configured so as to be detachable. Can be done easily. In addition, when the LED element 19 is used, the service life is longer than that of the conventional light source, and there is no heat generation. Therefore, the number of times of replacing the LED power supply unit 5 can be reduced, and also when the replacement is necessary. It can be performed safely, easily and economically without fear of burns.

  In the first embodiment described above, the inner surface of each member other than the LED element 19, for example, the inner peripheral surface of the light path forming member 15, the inner surface side of the first lens 20, and the like are colored (pure white, etc.). It is desirable from the viewpoint of improving the light efficiency and obtaining soft light.

  In the present embodiment, since the second lens 22 serving as the light emitting diffusion unit 6 is mounted on the opening 30, an effect of enhancing the protection function of the internal device as a cover of the lighting device 1 can be obtained. The light emitting diffusion unit 6 as the cover member may be made of a transparent or translucent member. Further, although not shown, the light emitting diffusion unit can be applied to decorative lighting or the like as emitting decorative light by giving unevenness and other various shapes, coloring, and the like.

[Second Embodiment (FIG. 4)]
FIG. 4 is a longitudinal sectional view showing a second embodiment of the lighting device according to the present invention. Note that components corresponding to those in the first embodiment are described with reference to FIG. 4 assigned the same reference numerals as those in FIG. 1, and description of components that are the same as those in the first embodiment is omitted.

  In the illumination device 1 (1b) of the present embodiment, the LED elements 19 are arranged to face each other in the housing 2, and the light L1 emitted from the LED elements 19 is focused on a plurality of focusing points O1, O2, O3,. It is.

  That is, the illuminating device 1 of this embodiment is also comprised from the housing | casing 2, the power supply circuit unit 3, the reflection diffusion unit 4, the LED power supply unit 5, the light emission diffusion unit 6 etc. similarly to 1st Embodiment.

  An opening 30 is formed on one side surface (lower surface) of the housing 2, and a plurality of LED elements of the LED power supply unit 5 are arranged on the peripheral side surface adjacent to the opening 30 in the housing 2 so as to face each other. 19 is provided, and a first lens 20 that diffuses light emitted from each LED element 19 is provided.

  A horizontal plate-like reflection diffusing member 14 (14b) is provided inside the housing 2 so as to face the opening 30 and is emitted upward from the LED element 19 diffused through the first lens 20. Light (not shown; see L2 in FIG. 1) is reflected and diffused at various angles facing downward.

  Below the reflection diffusing member 14, there is provided a longitudinal light pipe-shaped light path forming member 15 communicating from the reflection diffusing member to the opening 30. The light path forming member 15 receives light L 1 from the LED element 19. A hole 23 to be passed is opened.

  In such a configuration, the arrangement of the LED elements 19 is set so that the light L1 emitted from the opposing elements is focused on a plurality of focusing points O1, O2, O3... On the central axis of the light path forming member 15. The light L3 focused at each focusing point is emitted to the outside from the opening 30 of the housing through the space in the light path forming member 15.

  Also in the second embodiment having such a configuration, similarly to the first embodiment, the light L1 emitted from the LED element 19 is diffused and emitted toward the opposing direction by the first lens 20, and the light L1 is The light L3 converged at the converging points O1, O2, O3... And converged is filled in the closed space in the casing 2 surrounded by the reflection diffusing member 14 and the light path forming member 15, and the energy is increased. At the same time, the shape of the point light source of each LED element 19 disappears.

  Then, the light L3 is soft and free from optical spots, passes downward through the optical path forming member 15, passes through the second lens 22 in the opening 30, and is emitted to the outside.

  In this case, also in this embodiment, the second lens 22 is configured as a concave lens, and the above O1, O2, O3... Are on the central axis of the optical path forming member 15. Therefore, these O1, O2, O3. The light L3 is refracted by the action of the concave lens and is emitted radially downward.

  Due to the above action, also in the present embodiment, the light emission L1 of the plurality of LED elements 19 provided in the housing 2 is diffused as the first stage by the first lens 20 and then converged in a form of colliding with each other. At the same time, the second stage of reflection diffusion is performed by the reflection diffusion member 14, and the light energy is sufficiently stored in the housing 2 by focusing at O 1, O 2, O 3... On the central axis of the light path forming member 15. Thereafter, the light can be efficiently discharged from the opening 30 to the outside through the space in the light path forming member 15. Therefore, there is no optical spot from the LED element 19, and the softness of light, energy saving, and high efficiency can be further enhanced.

  In this embodiment as well, as in the first embodiment, each of these units is attached and detached by the housing 2, the power supply circuit unit 3, the reflection diffusion unit 4, the LED power supply unit 5, the light emission diffusion unit 6, and the like. As it is configured, it can be easily assembled and disassembled, etc. By using the LED element 19, the service life is longer than that of the conventional light source, there is no heat generation, and the number of times the LED power supply unit 5 is replaced is reduced. In addition, when replacement is necessary, there is an effect that it can be performed safely, easily and economically without fear of burns.

[Third Embodiment (FIGS. 5 to 7)]
The present embodiment relates to a configuration example suitable for an array type lighting device. FIG. 5 is a longitudinal sectional view showing a first configuration example, and FIG. 6 is a longitudinal sectional view showing a second configuration example. FIG. 7 is a plan view showing the configuration of the LED power supply unit 5 applied to these illumination devices. Components corresponding to those in the first embodiment or the second embodiment will be described with the same reference numerals as those in FIGS. 1 and 4 in FIG. 5 and the same configurations as those in the first and second embodiments. The description of the portion is omitted.

  First, a first configuration example will be described with reference to FIGS. 5 and 7. This illuminating device 1 (1c) is comprised as the array form which has predetermined length in the paper surface front-back direction of FIG.

  That is, the illuminating device 1 of this embodiment is the same as that of each said embodiment by the point comprised from the housing | casing 2, the power supply circuit unit 3, the reflection diffusion unit 4, the LED power supply unit 5, the light emission diffusion unit 6, etc. However, an array-shaped opening 30 is formed on one side surface (lower surface) of the housing 2, and the other side surface (vertical side surface) adjacent to the opening 30 in the housing 2 is shown in FIGS. 5 and 7. Thus, the LED element 19 is arranged. A first lens 20 similar to the above is provided on the tip side of each LED element 19 to diffuse the light L1.

  In addition, a reflection diffusion member 14 (14 c) is provided inside the housing 2 so as to face the opening 30 and each LED element 19. The reflection diffusing member 14 has a concave surface with a semicircular arc shape in cross section, and reflects and diffuses light L1 from the LED element 19 diffused toward the side via the first lens 20 downward. ing.

  The reflection diffusing member 14 is set so that the reflected and diffused light L3 is emitted from the opening 30 of the housing 2 in a state of being converged toward the outside downward. That is, in the present embodiment, the reflection diffusing member 14 serves as an optical path forming member.

  In the present embodiment, the light emitting diffusion unit 6 is configured as a flat cover, for example.

  Even with such a configuration, after the light emitted from the plurality of LED elements 19 provided in the housing 2 is diffused as the first stage by the first lens 20, the second stage of reflection diffusion is performed by the reflection diffusion member 14. After the light energy is sufficiently stored in the case, the light can be emitted from the opening 30 of the case 2 while being focused toward the outside, and is applied as an array illumination device such as a conventional fluorescent lamp. can do. Also according to this configuration example, there are no optical spots from the LED light source, and the softness of light, energy saving, and high efficiency can be further enhanced. In addition, LEDs can be used to produce more uniform light, and can be safe and economical, extend the life of the light source, and can easily replace the light source unit.

  Next, a second configuration example of the present embodiment will be described with reference to FIGS. This illuminating device 1 (1d) is the same as that of the 1st structural example by the point comprised by the array form which has predetermined length in the paper surface front-back direction of FIG.

  The second configuration example is different from the first configuration example in that the reflection diffusion member 14 (14d) is configured in a flat plate shape, and the reflected and diffused light L3 is diffused from the opening 30 of the housing 2 toward the outside. It is in the setting to be released at. Other configurations are the same as those of the first configuration example shown in FIG.

  According to such a configuration, after the light emitted from the plurality of LED elements 19 provided in the housing 2 is diffused as the first stage by the first lens 20, the second stage of reflection diffusion is performed by the reflection diffusion member 14. After the light energy is sufficiently stored in the case, it can be emitted in a state of being diffused from the opening 30 of the case 2 to the outside, and is applied as an array type illumination device such as a conventional fluorescent lamp can do.

[Other Embodiments]
In addition to the above embodiments, the present invention can be variously modified and applied.

  For example, the illumination light can be designed by applying various shapes as the cover member or the second lens.

  Further, spot light can be formed with light transmitted through the second lens, or the second lens can be cut (diamond cut, polyhedron) to diffusely reflect the emitted light.

  In addition, due to the difference in the shape of the power supply terminal, it can be developed into a corresponding product.

  In addition, the cover as the second lens can be processed and used, for example, for guiding an “emergency exit”.

The longitudinal cross-sectional view which shows 1st Embodiment of the illuminating device which concerns on this invention. The exploded view which shows the structural member of the said 1st Embodiment for every unit. The top view which shows the structure of the LED unit in the said 1st Embodiment. The longitudinal cross-sectional view which shows 2nd Embodiment of the illuminating device which concerns on this invention. The longitudinal cross-sectional view which shows the 1st structural example of 3rd Embodiment of the illuminating device which concerns on this invention. The longitudinal cross-sectional view which shows the 2nd structural example of 3rd Embodiment of the illuminating device which concerns on this invention. The top view which shows the structure of the LED unit in the said 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Case 3 Power supply circuit unit 4 Reflection diffusion unit 5 LED power supply unit 6 Light emission diffusion unit 7 Through hole 8 Power supply circuit board 9 Power supply circuit component 10 Power supply terminal 11 Connection terminal 12 Power supply wiring 13 Base 14 Reflection diffusion member 15 Light path forming member 16 Outer peripheral side ring wall 17 Inner peripheral side ring wall 18 LED substrate 19 LED element 20 Lens (first lens)
21 Flat part 22 Concave lens (second lens)
30 opening

Claims (7)

A housing having an opening formed on one side surface, a plurality of LED elements provided around the opening in the housing, and a lens that diffuses light emitted from each LED element toward the inside of the housing And a curved plate-like reflection diffusion member that is provided inside the housing and reflects and diffuses light emitted from the LED element diffused through the lens, and the opening from the vicinity of the center of curvature of the reflection diffusion member A cylindrical light path forming member that communicates with a portion, and the curvature of the reflection diffusing member is set to converge the reflected and diffused light at one point on the central axis of the light path forming member. An illuminating device characterized in that the focused light is emitted to the outside through an opening of the casing through a space in the light path forming member. A housing in which an opening is formed on one side surface, a plurality of LED elements provided in an arrangement facing each other on the side surface adjacent to the opening in the housing, and a lens that diffuses light emitted from each LED element; A reflection diffusing member that is provided on the inner side of the casing so as to face the opening and reflects and diffuses light emitted from the LED element diffused through the lens; and from the reflection diffusing member to the opening Each of the LED elements is configured such that light emitted from the opposing LED elements converges at a plurality of points on the central axis of the light path forming member. An illumination device characterized in that light focused on a point is emitted to the outside from an opening of the housing through a space in the light path forming member. A housing formed with an opening on one side surface, a plurality of LED elements provided on a side surface adjacent to the opening in the housing, a lens for diffusing light emitted from each LED element, and the housing A reflection diffusing member that is provided inwardly facing the opening and each LED element and reflects and diffuses light emitted from the LED element diffused through the lens. An illuminating device characterized in that the diffused light is set to be emitted in a state of being converged outward from the opening of the casing. A housing formed with an opening on one side surface, a plurality of LED elements provided on a side surface adjacent to the opening in the housing, a lens for diffusing light emitted from each LED element, and the housing A reflection diffusing member that is provided inwardly facing the opening and each LED element and reflects and diffuses light emitted from the LED element diffused through the lens. An illuminating apparatus characterized in that the diffused light is emitted in a state of diffusing outward from the opening of the housing. The lighting fixture according to any one of claims 1 to 4, wherein a lens or a cover made of a transparent or translucent member is provided in the opening of the housing. The lighting fixture according to claim 1, wherein each LED light source is configured as a unit that can be attached to and detached from the housing. The lighting fixture according to claim 1, wherein the opening of the housing and the units of the LED light sources are configured in a circular shape or an array shape.

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