JP2003110149A - Light-emitting unit and illuminator using the light- emitting unit - Google Patents

Light-emitting unit and illuminator using the light- emitting unit

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Publication number
JP2003110149A
JP2003110149A JP2001303822A JP2001303822A JP2003110149A JP 2003110149 A JP2003110149 A JP 2003110149A JP 2001303822 A JP2001303822 A JP 2001303822A JP 2001303822 A JP2001303822 A JP 2001303822A JP 2003110149 A JP2003110149 A JP 2003110149A
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JP
Japan
Prior art keywords
light
light emitting
emitting unit
bottom surface
surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001303822A
Other languages
Japanese (ja)
Other versions
JP2003110149A5 (en
Inventor
Nobuyuki Matsui
Hideo Nagai
Tetsushi Tamura
伸幸 松井
秀男 永井
哲志 田村
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP2001303822A priority Critical patent/JP2003110149A/en
Publication of JP2003110149A publication Critical patent/JP2003110149A/en
Publication of JP2003110149A5 publication Critical patent/JP2003110149A5/ja
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To provide an illuminator which is provided with several light sources having different colors and exhibits high color-mixture capability. SOLUTION: The illuminator 2 has several light-emitting diodes 201-203 which are mounted on a substrate 23. It is provided with a color-mixture layer formed of a transparent resin in the form of a column whose bottom is the circular region of the substrate 23 including the light-emitting diodes 201-203, a light distribution layer formed of a transparent resin whose lower bottom is the upper bottom of the color-mixture layer and which has an upper bottom larger than its lower bottom and a light reflector 22 which supports them. The interface between the color mixture layer and the resin layer and the interface between the light distribution layer and the resin layer are mirror surfaces.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
Light emitting unit having a plurality of light sources
Lighting device using a light source, particularly from the plurality of light sources
The present invention relates to a technology for mixing colors of light. 2. Description of the Related Art In recent years, as a lighting device for the next generation, it has been developed.
Research and development of lighting devices using photodiodes are actively pursued
Have been. In order to improve the emission color of such a lighting device,
For example, Japanese Patent Application Laid-Open No. 11-16 / 1999
In Japanese Patent No. 3418, light emitting diodes of multiple colors are used.
A light source capable of mixing colors of emitted light is disclosed.
You. [0003] That is, according to the light source, emission of a plurality of colors is performed.
The photodiodes are placed close to each other, and these
The light emitted from the light emitting diode is diffused by a diffuser, etc.
That is, the color mixing property can be improved. [0004] However, the light emitting device
The light emitted by the iodine is high in brightness,
Does not mix well and is close due to mounting limitations
There is a limit to the arrangement in the first place. Also, use a diffusion plate, etc.
However, this only slightly relaxes the directivity,
The reality is that no color mixing effect can be obtained. Further, as a practical problem, it is necessary to improve the color mixing property.
The light emitting area of the lighting device
is important. Because, even if the color mixture is high,
Since it became a lighting device with a small light emitting area like a point light source,
Is not practical. The present invention
It is made in view of the problem, and different emission colors
A lighting device having a plurality of light sources having a light emitting area.
Providing lighting devices with high color mixing without narrowing
Aim. [0006] To achieve the above object,
Therefore, the light emitting unit according to the present invention has different emission colors.
Light-emitting unit with multiple light-emitting bodies mounted on a substrate
And a region including the luminous body of the substrate is defined as a lower bottom surface.
Color mixture with a reflective surface on the inner peripheral surface
Part and the upper bottom surface of the mixed color portion as a lower bottom surface, and
A truncated cone with a large bottom surface
Is a reflective surface, and the inside is a translucent material.
And a light distribution unit filled with
You. [0007] In this way, different light emission occurs in the color mixture portion.
Good color mixing of light emitted from light emitters with light color
can do. The emitted light from the illuminant continues,
The light-emitting area, which has become smaller during the color mixing process, is enlarged by the light distribution section.
It is. Therefore, according to the present invention, the light emitting area is reduced.
It is possible to provide a lighting device with high color mixing without
You. [0008] Here, the truncated cone is defined as an upper base and a lower base.
Figures with similar bottoms (for example, both top and bottom bottoms are circular
Only the area is different. ), Not limited to
And a figure whose bottom is not similar (for example,
On the other hand, the bottom surface is circular. What is)
Shall be included. Further, the light emitting unit according to the present invention
Mounts multiple illuminants with different emission colors on a board
The light emitting unit of the substrate
Is defined as the lower bottom surface, and the area is smaller than the lower bottom surface.
Frusto-conical cone with an upper bottom surface, the inner surface of which is reflective
The color mixing part that is the surface, and the upper bottom of the color mixing part is the lower bottom.
With an upper bottom surface having a larger area than the lower bottom surface.
It is a pyramid whose inner peripheral surface is a reflective surface.
And a light distribution unit in which the inside is filled with a translucent substance.
It is characterized by that. In this way, the light is released from the luminous body.
The light path drawn when the emitted light passes through the mixed
Color mixing effect
Fruit can be improved. If the reflecting surface is a mirror surface,
Efficient light emitting unit with reduced light loss from light emitter
Can be released outside. Also, the reflection surface has a predetermined color.
It may be painted. In this way,
By the combination of the emission color of the light body and the paint color of the reflective surface,
Adjust the color of the light emitted by the light emitting unit to the desired light color
be able to. The color mixing section fills the light distribution section.
Has a higher refractive index than that of a translucent material
The inside is filled with a translucent substance
The refractive index of the translucent substance filling the light distribution section is the refractive index of air.
It is characterized by being larger than. In this way,
As light emitted from the light body is released into the air,
The interface between the color section and the light distribution section, and the interface between the light distribution section and the air
The light emitting unit
The light area can be further enlarged. Further, the interface between the color mixing section and the light distribution section is located at the front.
Bulges toward the color mixing portion, or the upper bottom surface of the light distribution portion is
It is characterized in that it protrudes toward the light distribution section. like this
In this case, the light emitted from the illuminant is transmitted to the interface between the color mixing section and the light distribution section.
At one or both interfaces between the light distribution section and the air.
Folding, so the light emitting area of the light emitting unit
Can be great. The lighting device according to the present invention has the above-described light source.
It is characterized by using an optical unit.
Achieves a significant reduction in thickness compared to lighting equipment, and is effective in space.
It is a great contribution to the use and improvement of the lighting environment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a lighting device according to the present invention will be described.
Embodiments will be described with reference to the drawings. (First Embodiment) FIG. 1 shows an illumination device according to the first embodiment.
It is an outline view showing the composition of the lighting device. In FIG.
The lighting device 1 includes a main body 11 and a power supply device 12.
The power supply 12 is used to receive power from a commercial power supply.
One connected to the power plug 13 with the power cable
On the other hand, the power supplied from commercial power
Power supply to the main unit 11
Cable. The main body 11 has many light emitting units on a substrate.
These light-emitting units are mounted
Illumination light is emitted by receiving power supply from the source device 12.
FIG. 2 is a circuit diagram showing a circuit configuration of the main body unit 11.
FIG. In FIG. 2, an electronic circuit provided in the main body 11
Has four electrode terminals 110-113, and these electrode terminals
Power supplied to the light emitting unit 114 and the like.
You. Each light emitting unit including the light emitting unit 114
Have different emission colors (eg, red, green, and blue)
Three colors. 3) light emitting diodes
So that the amount of light can be adjusted for each emission color.
It has pole terminals. Electrode terminals 110 to 1 of main body 11
12 corresponds to each light emission color of the light emitting diode.
The electrode terminal 113 is used for grounding which is shared between the emission colors.
Electrode terminals. The electrode terminals 110 to 113 are, for example,
A socket fixed to the substrate constituting the portion 11
The power cable at the end of the power cable
The power plug 13 is inserted and electrically connected to the power supply 12.
Connected. In addition, the tip of the power cable is
And screwed to the corresponding electrode terminals 110-113
You may. Next, the light emitting unit will be described in more detail.
I will tell. FIG. 3 shows the configuration of the light emitting unit.
3A is a plan view of the light emitting unit, and FIG.
It is the sectional perspective view. In FIG.
The unit 2 has a square shape in plan view, and the length of one side is
8.0 mm. In the center of the square
There is a circular area centered on the heart and the light emitting diode 201
To 203 are provided. The light emitting diodes 201 to 203 are respectively
Arranged in such a way that an equilateral triangle is formed when connecting the center positions
Have been. The length of one side of this equilateral triangle is 1.0mm
Yes, the square and the center are substantially the same. Each light emitting diode
The chip is a bare chip of about 0.3 mm square.
It has electrode terminals on the upper and lower surfaces, and the electrode terminals on the upper surface are
Patterned on the substrate of body part 11 and gold plated on the surface
(Hereinafter simply referred to as “Cu pattern”)
Write. ) Is wire bonded. As shown in FIG. 3B, the light emitting unit 2
Mounted the light emitting diodes 201 to 203 on the substrate 23
And a resin layer 21 on a substrate 23.
A reflection plate 22 is formed. The resin layer 21 is a transparent resin
And emits light emitted from the light emitting diodes 201 to 203.
Let through. Also, a surface of the reflection plate 22 that is in contact with the resin layer 21.
Is a reflective surface (a mirror surface in the present embodiment).
To reflect light traveling from the resin layer 21 to the reflection plate 22.
You. The substrate 23 includes a light emitting diode 201.
To 203 to supply an appropriate current according to the emission color.
A Cu pattern is formed so as to be able to be used.
In this way, the amount of current is adjusted and the entire lighting device 1 is adjusted.
Thus, a more suitable light color can be achieved. In addition,
The plate 23 may be a multi-layer substrate, which matches the Cu pattern.
It is desirable to select the number of layers. FIG. 4 is an enlarged view of FIG. 3B.
The resin layer 21 has a light distribution layer 21a and a color mixing layer 2 according to its function.
1b. The color mixing layer 21b has a bottom diameter.
3.0mm and 0.8mm height from cylindrical translucent resin
Has become. In addition, the light distribution layer 21a is formed such that
1b, a circle with a diameter of 3.0mm, like the upper bottom
The surface is the same as the upper surface of the light-emitting unit 2 and has a positive side of 8.0 mm on one side.
It is made of a rectangular truncated cone-shaped translucent resin. As described above, the color mixing layer 21b of the reflection plate 22
The surface S3 in contact with the light-emitting diode is a reflection surface.
Light emitted from 201 to 203 is reflected many times on the reflecting surface S3
Is done. Thereby, the light emitting diodes 201 to 203
The light emitted by the light source passes through the optical path until it escapes from the color mixing layer 21b.
Prolonged and mixed colors. The light distribution layer 1 is removed from the color mixing layer 21b.
The light entering the light distribution layer 2a travels through the light distribution layer 21a,
Incident on the interface S1 between the oil layer 21 and the outside air at a shallow angle
And is reflected at the interface S1. As described above, the reflection plate 22
The surface S2 in contact with the light distribution layer 21a is also a reflection surface,
The light reflected at the interface S1 travels inside the light distribution layer 21a and
When it reaches the launch surface S2, it is reflected again to the interface S1
U. At this time, the light emitting diodes 201-203
The emitted light is reflected away from the color mixing layer 21b.
Each time the light is reflected by the reflecting surface S2, the light strikes the interface S1.
Incident on the interface S1 at a deeper angle.
When the incident angle becomes smaller than the critical angle, it passes through the interface S1.
Then, it goes out of the light emitting unit 2. In this way,
The effect of expanding the light emitting area of the entire light emitting unit 2 is obtained.
be able to. That is, the color mixture in the color mixture layer 21b is
Light-emitting diodes 201 and 2 whose light-emitting areas have been reduced in the process
03 is transmitted through the light distribution layer 21a.
As a result, the light emitting area can be increased without impairing the color mixing. FIG. 5 shows a case where the light emitting unit 2 is provided with the resin layer 21 and the opposite side.
It is the top view which looked at the state in the state where the shooting plate 22 was removed.
Cu patterns 23a to 23f are patterned on the substrate 23.
Have been The light emitting diode 201 has one electrode
Dieboard with Ag paste directly on Cu pattern 23d
The other electrode by wire bonding
It is connected to the Cu pattern 23a. Similarly, departure
The photodiode 202 is provided on the Cu patterns 23b and 23e,
The light emitting diode 203 is mounted on the Cu patterns 23b and 23e.
Each is connected. In this way, the phase of each light emitting unit is different.
Light emitting diodes 201 to 203 having different emission colors
The light emitted from the lighting device 1 is mixed with the
A high lighting device can be provided. In particular, the color mixing layer 21b
The light path of the light emitted from the light emitting diodes 201 to 203
By reducing the thickness of the lighting device 1 by extending
A color mixing effect can be obtained. FIG. 6 shows three light emitting diodes 201-2.
03 is the vertex of an equilateral triangle whose center is 1 mm on each side
Of each light emitting diode
Figure showing field pattern (far field pattern)
is there. In FIG. 6, light emitting diodes 201 to 203 are
Far field patterns FFP1 to FFP3 respectively
Present. The far field patterns FFP1 to FFP
The color mixing property is high in the portion where FP3 overlaps each other. On the other hand, the far field pattern
The hatched part in FFP1 to FFP3 indicates another fur feel.
Pattern overlaps little or no
Low color mixing properties. According to the present invention,
The low-reflection portion is reflected inward by the reflection surface S3, so that
Significantly compared to the case where light emitting diodes are
Color mixing can be improved. (Second Embodiment) Next, a second embodiment of the present invention will be described.
The lighting device according to the embodiment will be described with reference to the drawings.
I will explain it. Illumination device according to the second embodiment
The configuration is substantially the same as the configuration of the lighting device according to the first embodiment.
However, the resin layer 21 in the first embodiment is
Since there is a difference in the configuration of the corresponding parts,
The portion corresponding to the resin layer 21 will be described. In the first embodiment, the resin layer 21
Is simply made of transparent resin.
Resin layer 21 is composed of light distribution layer 21a and color mixing layer 21b.
Sex is different. That is, the refractive index of air is n1,
The refractive index of the optical layer 21a is n2, and the refractive index of the color mixing layer 21b is n.
When expressed as 3, the following relationship exists between them.
You. N1 <n2 <n3 To obtain a desired resin by adjusting the refractive index, for example,
Urethane, polycarbonate
ate), epoxy (Epoxy), silicon resin (silicon re)
The polymerization ratio may be adjusted in sin) or the like. Also, mixed colors
The refractive index n3 of the layer 1b is
It is desirable to set the value close to the refractive index.
The light extraction efficiency from the light emitting diodes 201 to 203
Can be enhanced. FIG. 7 shows a light emitting unit according to this embodiment.
Light emitted from the light emitting diode passing through the resin layer 21
FIG. 2 is a diagram illustrating the optical path. As shown in FIG.
In addition, light passing through the resin layer 21 causes a difference in refractive index between the resins.
Due to this, at the interface S4 between the light distribution layer 21a and the color mixing layer 21b
Refracted. Therefore, the angle of incidence when entering the interface S4
If θ1 is larger than 0 ° and smaller than the critical angle,
The angle θ2 at which the light enters the interface S1 is larger than θ1.
Become. Therefore, from the center of the light emitting unit 2 to the periphery
The heading light is better than in the first embodiment.
And move away from the center. That is, as described above
It is possible to make the refractive index different between the light distribution layer 21a and the color mixing layer 21b.
Can increase the light emission area.
In addition, it is possible to make the periphery of the light emitting unit glow brighter
it can. (Third Embodiment) The third embodiment of the present invention will now be described.
Regarding the lighting device according to the embodiment, referring to the drawings.
I will explain. The lighting device according to the present embodiment
It has substantially the same configuration as the lighting device according to the embodiment.
Therefore, in the following, the part that characterizes this embodiment
A description will be given focusing on the minutes. In the above embodiment, the light emission
The color mixing layer 21b of the unit 2 has a substantially cylindrical shape,
Diameter of layer 21b on substrate 23 side (lower bottom side) and light distribution layer
The diameter on the side (upper bottom side) in contact with 21a is almost the same.
ing. On the other hand, the color mixing layer in the present embodiment
21b, the diameter of the upper base is smaller than the diameter of the lower base.
ing. For this reason, the reflection layer 22 is in contact with the color mixing layer 21b.
Reflecting surface S3 is inclined toward the inside of the color mixing layer 21b.
ing. FIG. 8 shows a lighting device according to the present embodiment.
The cross section of one light emitting unit 2 is shown, and
FIG. 3 is a diagram showing an optical path of light passing through a resin layer 21. FIG.
As shown in FIG.
The light path of the light is mixed with the color mixture layer 2 because the reflection surface S3 is inclined.
It is difficult to escape from 1b. Therefore, the light emitting diodes 201 to 203
The optical path of the emitted light in the color mixing layer 21b is determined by the above-described embodiment.
Higher than the optical path in the form of
A good color mixing effect can be obtained. In this embodiment,
In this case, the light emitting diode is generated due to the inclination of the reflection surface S3.
The radiation light 201 to 203 is generated between the color mixing layer 21 b and the substrate 23.
Since the interface S5 can be easily irradiated, the interface S5 is used as a mirror surface.
The luminous efficiency of the entire light emitting unit 2 is improved. As described above, the reflecting surface S3 is inclined inward.
The more light emitting diodes 201 to 203 emit,
The optical path length before the light leaves the color mixing layer 21b becomes longer.
Thus, color mixing can be improved. Therefore, the effects of the present invention
In order to obtain the result, the point where the reflection surface S3 contacts the substrate 23
The angle formed by the reflection surface S3 with respect to the substrate 23 is 9
0 ° or the reflection surface S3 is within the color mixture layer 21b.
It is desirable to be inclined toward the side. (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described.
Regarding the lighting device according to the embodiment, referring to the drawings.
I will explain. In the present embodiment, another embodiment
Focuses on the differences between the
I will describe. FIG. 9 illustrates a lighting device according to the present embodiment.
As for the light emitting unit 2 to be formed,
It is a surface perspective view. As shown in FIG. 9, the light distribution layer 21a and the color mixing layer 2
The interface S4 of 1b faces the light emitting diodes 201 to 203
It is bulging out. Also, the interface between the light distribution layer 21a and the outside air
S1 also bulges toward light emitting diodes 201-203
ing. These interfaces S1 and S4 are, for example, substantially cylindrical.
Spherical surface around the rotation center axis of the mixed layer 12b
Is parabolic. With such a structure, a light emitting diode
The optical path of the light emitted by the interface S1 and S4
So that it is directed toward the periphery of the light emitting unit 2
Since it is refracted, the same effect as in the second embodiment,
That is, the light emitting area of the light emitting unit 2 is increased.
And brighter light around the light emitting unit.
Can be made. In this embodiment, the interface S1,
The case where both S4 are bulged has been described.
Even if only one of the interfaces swells, the same effect is obtained.
Obtainable. The present invention has been described based on the embodiments.
However, the present invention is limited to the above-described embodiment.
It goes without saying that the following modified example is implemented.
be able to. (Modification) (1) In the above embodiment, a plurality of light emitting dies
Mixes the light emitted by the Aether and the light emitting area of the light emitting unit
Have been described in several ways to increase
It is also possible to make it more effective
Can be obtained. For example, the resin filled in the light distribution layer has
The refractive index differs from the refractive index of the resin filled in the color mixture layer.
The light-emitting diode between the light distribution layer and the color mixing layer.
Bulging toward the side, the light emitting unit
The light area can be made larger. (2) Light emitting unit according to the first embodiment
The external dimensions of the above are illustrated, but this is only an example.
The effect of the present invention can be obtained even if
That is no different. However, the distance between light emitting diodes
The smaller the separation, the better the color mixing. About the shape of the color mixture layer
Even though the diameter surrounding the light emitting diode is smaller,
The higher the height from the light to the light distribution layer, the better the color mixing
Can be up. The height from the substrate to the light distribution layer is small.
Both must be higher than the light emitting diode. Glow
If the diameter surrounding the diode is made smaller,
The light distribution layer from the substrate
Even if the height is lower, the color mixing effect can be obtained,
Also, if the height from the substrate to the light distribution layer is higher,
Compared to when the height from the light to the light distribution layer is lower.
Even if the diameter surrounding the iodo is increased, the color mixing effect can be obtained.
You. (3) In the second embodiment.
Is the case where the refractive index is different between the light distribution layer and the color mixing layer.
However, the following may be used instead. You
That is, as it approaches the interface S1 from the substrate,
Alternatively, the refractive index may be continuously reduced. this
Even in this case, the same effect as in the second embodiment can be obtained.
Can be In the fourth embodiment, the boundary
The optical path is adjusted by expanding the surfaces S1 and S4.
Instead, the interface S1 or interface S4 is used as a Fresnel lens.
You may. By doing so, the interface S1 and the interface S
4 to reduce the height of the light-emitting unit by suppressing the height
Therefore, the overall size of the lighting device can be reduced.
Can be. (4) In the above embodiment,
The surfaces S2 and S3 of the firing plate 22 in contact with the resin layer 21 and the substrate 2
Although the surface S5 in contact with the resin layer 21 of No. 3 is a mirror surface,
Instead, paint with a color that matches the emission color of the lighting device.
You may. For example, an illumination device that emits white light is configured.
In the case of forming these surfaces S2, S3, S5
If you paint white, you can adjust the color of the light emitted by the lighting device.
It is effective for In addition, for example, the light color emitted by the lighting device
In order to obtain a bluish color, these surfaces S2, S
3. S5 may be painted blue. What light color
Even if this is the case, the light color and light emitting diode
Of the surfaces S2, S3, S5 from the relationship with the light color
If the color is determined, a desired illumination color can be obtained.
In the above embodiment, the resin layer 21 is transparent.
Although it is assumed that the resin layer 21 is made of resin,
To adjust the color of light emitted by the light device
Good. For example, to obtain a reddish light color, a resin layer
21 may be a reddish transparent resin. In the above embodiment, the light emission
There are three types of diodes according to their emission colors.
Instead of two types, according to the light color of the target lighting device
If you choose more than a kind of light emitting diode, the present invention
The effect can be obtained by implementing. (5) In the above embodiment, the light emitting unit is
It is assumed that the color mixture layer is substantially square in plan view, and the color mixing layer is circular in plan view.
But there could be other shapes instead.
No. FIG. 10 shows a shape other than the shape shown in the above embodiment.
FIG. 3 is a diagram illustrating an external appearance of a light emitting unit having a shape of a circle,
An external perspective view of a light-emitting unit that has a substantially hexagonal shape when viewed from above.
It is. In FIG. 10, at the center of the light emitting unit
Is a color mixing layer, which is a circular area with the same center as the hexagon
And a light emitting diode is mounted therein. This
In this case, the light emitting unit has a substantially square shape in a plan view.
The distance from the center of the light-emitting unit to the periphery
Light emitting unit
It is possible to suppress light amount unevenness of a single unit. Further, the color mixing layer is also, for example, a plan view.
Substantially triangular, with light emitting diodes placed at the three corners
You may. In addition, light emitting units and lighting devices as a whole
For the purpose of adjusting the light color, the light emitting die
If you want to change the brightness of your Aether,
When determining the arrangement of light emitting diodes in the color mixture layer
You may. (6) In the above embodiment,
The inclination of the surface of the light-projecting plate 22 in contact with the light distribution layer 21a and the reflection plate 22
Changes discontinuously with the inclination of the surface in contact with the color mixture layer 21b
The case was explained, but instead:
Is also good. That is, the side surface of the resin layer 21 is
The inclination angle may be changed continuously or continuously,
Even in this case, the effects of the present invention can be obtained. (7) In the above embodiment, 1
The number of light emitting diodes mounted on each light emitting unit is three
However, the present invention is not limited to this.
If two or more light emitting diodes are mounted on the
Fruit can be played. Also, the light emitting diode
Regarding colors, multiple light sources mounted on one light emitting unit
Some light emitting diodes with the same emission color
May be present. (8) In the above embodiment, the
No particular mention was made of the material of the firing plate 22, but
The following are mentioned as examples. The material of the reflection plate 22
For example, metals such as aluminum and stainless steel
To improve the heat dissipation efficiency from the front of the board
Can be. As a result, the light emitting diodes 201 to 203
And can extend the life of the
Prevents a decrease in luminous efficiency due to the rise and shifts the emission wavelength.
Can be prevented. Further, even if resin is used as the material of the reflection plate 22,
Good. In this case, apply aluminum plating to the surface of the resin
To form a reflective surface, and to prevent light from being transmitted into the reflective plate 22.
It should be prevented. The advantage of using resin is that
Good workability and light weight can be achieved.
Can be In addition, in the above embodiment, the light emitting
The radiation of the ions 201 to 203 passes through the resin layer 21
However, as for the material of the resin layer 21, the resin
May be replaced with a material other than resin such as glass.
No. As described above, according to the present invention,
By providing a color mixing layer, light emitted by light emitting diodes of multiple colors
Providing lighting devices with high color mixing because they mix colors
Can be. According to the present invention, a light distribution layer is provided to emit light.
Light can be spread to the periphery of the unit, so the light emitting area
And increase the amount of light around the light emitting unit.
Can be up.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view showing a schematic configuration of a lighting device according to a first embodiment of the present invention. FIG. 2 is a diagram showing a circuit configuration of an electronic circuit provided in a main body unit 11 constituting the lighting device 1. 3A and 3B are diagrams showing a configuration of the light emitting unit 2 constituting the main body 11, wherein FIG. 3A is a plan view of the light emitting unit 2, and FIG. FIG. 4 is a sectional perspective view of the light emitting unit 2 (FIG. 3)
FIG. 3B is an enlarged view of FIG. FIG. 5 is a plan view of the light emitting unit 2 in a state where a resin layer 21 and a reflection plate 22 are removed. FIG. 6 is a diagram illustrating a far-field pattern of each of the three light emitting diodes 201 to 203 when the centers thereof are located at the vertices of an equilateral triangle having a side of 1 mm. FIG. 7 is a diagram exemplifying an optical path of radiated light of a light emitting diode passing through a resin layer 21 in a light emitting unit 2 according to a second embodiment of the present invention. FIG. 8 is a view showing a vertical cross section of one light emitting unit 2 constituting a lighting device according to a third embodiment of the present invention, and also showing an optical path of light passing through a resin layer 21. . FIG. 9 is a diagram showing a cross section of a light emitting unit 2 included in a lighting device according to a fourth embodiment of the present invention. FIG. 10 is an external perspective view of a light emitting unit according to a modified example (5) of the present invention, which is a bird's-eye view of a light emitting unit having a substantially hexagonal shape in plan view. DESCRIPTION OF SYMBOLS 1 Illumination device 2, 114 Light emitting unit 11 Main body 12 Power supply device 13 Power plug 21 Resin layer 21 a Light distribution layer 21 b Color mixing layer 22 Reflector 23 Substrates 23 a to 23 f Cu patterns 110 to 113 Electrode terminals 201 to 203 Light emitting diodes FFP1 to FFP3 Far field patterns S1 to S5 Interface

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Nobuyuki Matsui             Matsushita Electric, 1006 Kadoma, Kazuma, Osaka             Sangyo Co., Ltd. F term (reference) 5F041 AA11 DA14 DA19 DA33 DA36                       DA43 DA82 DB08 DC08 DC22                       DC23 DC66 DC83 FF11

Claims (1)

  1. Claims 1. A light emitting unit comprising a plurality of light emitters having different light emission colors mounted on a substrate, wherein the lower surface is a region of the substrate including the light emitters. And a mixed color part whose inner peripheral surface is a reflection surface, and a truncated cone having an upper bottom surface having an upper bottom surface having a larger area than the lower bottom surface, wherein the upper bottom surface of the mixed color portion is a lower bottom surface, A light distribution unit having an inner peripheral surface serving as a reflective surface and an interior filled with a translucent substance. 2. A light-emitting unit in which a plurality of light-emitting bodies having different emission colors are mounted on a substrate, wherein a region including the light-emitting body of the substrate is a lower bottom surface, and the area is smaller than the lower bottom surface. A truncated cone having an upper bottom surface, a color mixing portion having an inner peripheral surface serving as a reflection surface, and an upper bottom surface having an upper bottom surface having an upper bottom surface having a larger bottom surface than the lower bottom surface. A light-emitting unit comprising: a truncated pyramid, an inner peripheral surface of which is a reflective surface, and a light distribution unit filled with a translucent substance. 3. The light emitting unit according to claim 1, wherein the reflection surface is a mirror surface. 4. The light emitting unit according to claim 1, wherein the reflection surface is painted in a predetermined color. 5. The color mixing section is filled with a translucent substance having a refractive index higher than that of a translucent substance filling the light distribution section, and The light emitting unit according to claim 1, wherein a refractive index of the translucent material filling the light distribution unit is higher than a refractive index of air. 6. The light emitting unit according to claim 1, wherein an interface between the color mixing section and the light distribution section swells toward the color mixing section. 7. The light emitting unit according to claim 1, wherein an upper bottom surface of the light distribution unit protrudes toward the light distribution unit. 8. A lighting device using the light emitting unit according to claim 1.
JP2001303822A 2001-09-28 2001-09-28 Light-emitting unit and illuminator using the light- emitting unit Pending JP2003110149A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005191111A (en) * 2003-12-24 2005-07-14 Kyocera Corp Package for storing light emitting element, and light emitting device
KR100583023B1 (en) * 2004-02-13 2006-05-23 에피테크 테크놀로지 코포레이션 A packaging of a light emitting diode
WO2006107012A1 (en) * 2005-04-04 2006-10-12 Nippon Sheet Glass Company, Limited Light emitting unit and lighting apparatus and image scanner using such light emitting unit
JP2007036199A (en) * 2006-06-01 2007-02-08 Kyocera Corp Light-emitting apparatus
JP2007110060A (en) * 2005-09-15 2007-04-26 Nichia Chem Ind Ltd Light emitting device
JP2007201448A (en) * 2005-12-27 2007-08-09 Showa Denko Kk Light emitting device mounting package, surface light source device, display, and manufacturing method thereof
JP2008501227A (en) * 2004-05-31 2008-01-17 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツングOsram Opto Semiconductors GmbH Optoelectronic semiconductor component and casing substrate for the component
JP2008060068A (en) * 2006-08-03 2008-03-13 Hitachi Maxell Ltd Illumination device and display device
JP2008084989A (en) * 2006-09-26 2008-04-10 Matsushita Electric Works Ltd Light-emitting apparatus and illumination appliance
JP2008523601A (en) * 2004-12-09 2008-07-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Lighting system
JP2008243959A (en) * 2007-03-26 2008-10-09 Matsushita Electric Works Ltd Light emitting device
WO2009063382A1 (en) * 2007-11-13 2009-05-22 Koninklijke Philips Electronics N.V. A lighting panel
JP2009164225A (en) * 2007-12-28 2009-07-23 Stanley Electric Co Ltd Light-emitting device and its manufacturing method
US7878680B2 (en) 2006-07-21 2011-02-01 Sony Corporation Light source module, light source apparatus and liquid crystal display

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115669A (en) * 1982-12-22 1984-07-04 Hitachi Ltd Drawing fitting device in diagram information processor
JPS62184584A (en) * 1986-02-07 1987-08-12 Matsushita Electric Ind Co Ltd Character recognizing device
JPH04188680A (en) * 1990-11-19 1992-07-07 Sharp Corp Led luminous display element
JPH10107325A (en) * 1996-09-30 1998-04-24 Nichia Chem Ind Ltd Light-emitting device and display using it
JPH10163533A (en) * 1996-11-27 1998-06-19 Omron Corp Light projector
JP2001203392A (en) * 2000-01-19 2001-07-27 Matsushita Electric Works Ltd Light-emitting diode

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115669A (en) * 1982-12-22 1984-07-04 Hitachi Ltd Drawing fitting device in diagram information processor
JPS62184584A (en) * 1986-02-07 1987-08-12 Matsushita Electric Ind Co Ltd Character recognizing device
JPH04188680A (en) * 1990-11-19 1992-07-07 Sharp Corp Led luminous display element
JPH10107325A (en) * 1996-09-30 1998-04-24 Nichia Chem Ind Ltd Light-emitting device and display using it
JPH10163533A (en) * 1996-11-27 1998-06-19 Omron Corp Light projector
JP2001203392A (en) * 2000-01-19 2001-07-27 Matsushita Electric Works Ltd Light-emitting diode

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005191111A (en) * 2003-12-24 2005-07-14 Kyocera Corp Package for storing light emitting element, and light emitting device
KR100583023B1 (en) * 2004-02-13 2006-05-23 에피테크 테크놀로지 코포레이션 A packaging of a light emitting diode
JP2008501227A (en) * 2004-05-31 2008-01-17 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツングOsram Opto Semiconductors GmbH Optoelectronic semiconductor component and casing substrate for the component
US8975646B2 (en) 2004-05-31 2015-03-10 Osram Opto Semiconductors Gmbh Optoelectronic semiconductor component and housing base for such a component
JP2008523601A (en) * 2004-12-09 2008-07-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Lighting system
JP2006314082A (en) * 2005-04-04 2006-11-16 Nichia Chem Ind Ltd Light-emitting unit, illuminating device using same unit and image reading apparatus
WO2006107012A1 (en) * 2005-04-04 2006-10-12 Nippon Sheet Glass Company, Limited Light emitting unit and lighting apparatus and image scanner using such light emitting unit
JP2007110060A (en) * 2005-09-15 2007-04-26 Nichia Chem Ind Ltd Light emitting device
JP2007201448A (en) * 2005-12-27 2007-08-09 Showa Denko Kk Light emitting device mounting package, surface light source device, display, and manufacturing method thereof
JP2007036199A (en) * 2006-06-01 2007-02-08 Kyocera Corp Light-emitting apparatus
US7878680B2 (en) 2006-07-21 2011-02-01 Sony Corporation Light source module, light source apparatus and liquid crystal display
JP2008060068A (en) * 2006-08-03 2008-03-13 Hitachi Maxell Ltd Illumination device and display device
JP2008084989A (en) * 2006-09-26 2008-04-10 Matsushita Electric Works Ltd Light-emitting apparatus and illumination appliance
JP2008243959A (en) * 2007-03-26 2008-10-09 Matsushita Electric Works Ltd Light emitting device
WO2009063382A1 (en) * 2007-11-13 2009-05-22 Koninklijke Philips Electronics N.V. A lighting panel
JP2009164225A (en) * 2007-12-28 2009-07-23 Stanley Electric Co Ltd Light-emitting device and its manufacturing method

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