TW201510438A - Light emitting diode lamp - Google Patents

Abstract

A light emitting diode lamp includes LEDs and a lamp cup. The LEDs are arranged in the lamp cup. The LEDs include white and red LEDs, the lamp cup includes a platform and a groove in configured in the platform. The white LEDs are arranged on the platform of the lamp cup, and the red LEDs are positioned in the groove. The present invention provides the light emitting diode lamp with high color rendering ability by employing ordinary white and red LEDs.

Description

Light-emitting diode lamp

The invention relates to a light-emitting diode lamp, in particular to a light-emitting diode lamp with high color rendering.

Light Emitting Diode (Light Emitting Diode) has the advantages of high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, long life, etc., and can be widely used as a light source in the field of illumination. .

In the conventional light-emitting diode lamp, the common white light-emitting diode assembly is formed by combining a blue light-emitting diode chip and a yellow light-emitting phosphor, and the blue light emitted by the blue light-emitting diode chip and the blue light are emitted. The yellow light emitted by the yellow fluorescent powder is mixed and turned into white light, wherein the red light component is small and the color rendering property is poor. Generally, in order to solve the problem of poor color rendering of light-emitting diode lamps, most manufacturers adopt a method of light-emitting diode assembly with high color rendering index to improve the color rendering of light-emitting diode lamps, which not only increases the cost, but also can not effectively use ordinary white light. Light-emitting diode components cause waste of production materials.

In view of the above, it is necessary to provide a high color rendering light-emitting diode lamp that does not use a light-emitting diode assembly having a high color rendering index.

A light-emitting diode lamp comprising a light-emitting diode assembly and a lamp cup, wherein the light-emitting diode assembly is disposed in the light cup, and the light-emitting diode assembly comprises a white light-emitting diode assembly and a red light-emitting diode assembly, the light The cup includes a platform and a recess recessed in the platform, the white light emitting diode assembly is disposed on the platform of the light cup, and the red light emitting diode assembly is disposed in the recess of the light cup.

The light-emitting diode lamp provided by the invention does not need to adopt the light-emitting diode component with high color rendering index, and the ordinary white light-emitting diode component is matched with the red light-emitting diode component to realize high color rendering of the light-emitting diode lamp. For manufacturers of light-emitting diode lamps, the cost of new product development can be reduced and production costs can be reduced. When the light-emitting diode lamp with high color rendering provided by the invention illuminates the article, the natural color of the article can be more realistically presented, and the light-emitting diode lamp provided by the invention can be applied to color inspection and clinical examination. It can also be used in places such as art galleries where the color rendering of lamps is highly demanding.

10‧‧‧ Subject

100‧‧‧ light cup

101‧‧‧ platform

102‧‧‧ Groove

1021‧‧‧ side wall

1022‧‧‧ bottom

201‧‧‧White light emitting diode assembly

202‧‧‧Red light emitting diode assembly

301‧‧‧First light diffusing component

302‧‧‧Second light diffusing component

20‧‧‧Light shell

FIG. 1 is a schematic diagram of a light-emitting diode lamp provided by the present invention.

2 is a schematic view of the main body of the light-emitting diode lamp of FIG. 1.

FIG. 3 is a comparison diagram of color rendering indexes of different combinations of white light emitting diode components and red light emitting diode components according to the present invention.

4, 5 and 6 are positional arrangements of a white light emitting diode assembly and a red light emitting diode assembly in different embodiments of the present invention.

FIG. 7 is a color temperature comparison diagram of a combination of different white light emitting diode components and red light emitting diode components of the present invention.

A method of manufacturing a light-emitting diode wafer of the present invention is shown in FIG.

Referring to FIG. 1 and FIG. 2, the LED device of the present invention comprises a main body 10 and a lamp housing 20. The electrical components in the main body 10 are electrically connected to an external power source (not shown) to obtain the LED. The main body 10 is mechanically and thermally connected to the lamp housing 20 when the lamp is operated.

The main body 10 includes a lamp cup 100, a white light emitting diode assembly 201, a red light emitting diode assembly 202, a first light diffusing component 301, a second light diffusing component 302, and first and second PCB boards. The lamp cup 100 includes a platform 101 and a recess 102 recessed in the platform 101. The first and second PCB boards are not shown in the figure, but it can be understood that the first and second PCB boards are respectively disposed in combination with the platform 101 and the recess 102, and are used for carrying the corresponding white light emitting diode assembly 201. And a red light emitting diode assembly 202. The inner surface of the lamp cup 100 is coated with a reflective paint to increase the amount of light emitted by the light-emitting diode lamp. It should be noted that a reflective plate may be disposed on the first and second PCB boards to increase the amount of light emitted by the LED package. Preferably, in this embodiment, a PCB coated with a reflective paint is used. Reflective action to reduce the number of additional steps and costs of setting up the reflector.

The white light emitting diode assembly 201 is electrically connected to the first PCB board and disposed on the platform 101 of the lamp cup 100. The groove 102 of the lamp cup 100 includes a sidewall 1021 and a bottom 1022. The red light emitting diode assembly 202 is electrically connected to the second PCB board and disposed at the bottom 1022 of the recess 102 of the lamp cup 100. The purpose of the design is to increase the red light emitted by the red light emitting diode assembly 202. The light mixing distance to improve the uniformity of light. The angle α between the side wall 1021 and the bottom portion 1022 of the lamp cup 100 is 30 degrees to 60 degrees, which can effectively reflect the red light emitted by the red light emitting diode assembly 202 of the bottom portion 1022, thereby reducing light loss. Since the platform 101 surrounds the recess 102, the red light emitting diode assembly 202 of the bottom portion 1022 of the recess 102 is enclosed in the center of the white light emitting diode assembly 201 of the platform 101 to increase the uniformity of red and white light mixing. Since the forward voltage difference between the white light emitting diode assembly 201 and the red light emitting diode assembly 202 is large, the white light emitting diode assembly 201 of the first PCB board of the light emitting diode lamp provided by the present invention and the first The red light emitting diode assembly 202 of the two PCB boards is electrically connected in series to avoid uneven current distribution flowing through the white light emitting diode assembly 201 and the red light emitting diode assembly 202, and at the same time, each light emitting The diode assembly operates in a high voltage, low current state to reduce energy consumption.

The second light diffusing component 302 is disposed above the recess 102 to diffuse light emitted by the red light emitting diode assembly 202. In this embodiment, the second light diffusing component 302 is atomized to increase the uniformity of red light passing through the second light diffusing component 302, and to dilute the red spot of the light emitting diode lamp. The first light diffusing component 301 covers the opening of the light cup 100, and is emitted by the red and white light emitting diode assembly 201 emitted by the diffused red light emitting diode assembly 202 and diffused by the second light diffusing component 302. White light. Further, in this embodiment, the first light diffusing component 301 is atomized to increase the uniformity of light emitted by the light emitting diode lamp. The light transmittance of the first light diffusion module 301 is 70% to 90%, and the light transmittance of the second light diffusion module 302 is 80% to 95%. The vertical distance between the first light diffusing component 301 and the white light emitting diode assembly 201 is controlled within a range of 3 cm to 10 cm. If the vertical distance is too small, the light mixing distance between the white light and the red light is small, thereby causing the light to be emitted. The uniformity of the light of the diode lamp is poor. If the vertical distance is too large, not only the optical loss is increased, but also the size of the light-emitting diode lamp is increased, and the cost of the lamp cup 100 and the lamp housing 20 is increased.

Please refer to FIG. 3. FIG. 3 is a comparison diagram of color rendering indexes of different combinations of white light emitting diode assembly 201 and red light emitting diode assembly 202 according to the present invention. The vertical coordinate Ra is a color rendering index, and the abscissa is a different white light emitting. The diode assembly 201 and the red LED assembly 202 are combined and represented by xW+yR, where W represents the white light emitting diode assembly 201 and R represents the red light emitting diode assembly 202. The x white light emitting diode assembly 201 and the y red light emitting diode assembly 202 are combined, and the ratio of the number of the white light emitting diode assembly 201 to the red light emitting diode assembly 202 is x:y, for example The meaning of 2W+1R is the combination of two white light emitting diode assemblies 201 and one red light emitting diode assembly 202, and the ratio of the number of white light emitting diode assemblies 201 to the red light emitting diode assembly 202 is 2:1. As can be seen from the figure, when only the white light emitting diode assembly 201 is used, the color rendering index of the light emitting diode lamp is less than 90, when the number of the white light emitting diode assembly 201 and the red light emitting diode assembly 202 is In the range of 4:1~1:1, the color rendering index of the light-emitting diode lamps is above 90. When the ratio of the number of the white light emitting diode assembly 201 to the red light emitting diode assembly 202 is 2:1, that is, the two white light emitting diode assemblies 201 are combined with a red light emitting diode assembly 202. Luminous diode lamps have the highest color rendering index.

The light-emitting diode lamp provided by the invention does not need to adopt a high color rendering light-emitting diode assembly, and uses the ordinary white light-emitting diode assembly 201 and the red light-emitting diode assembly 202 to pass the ordinary white light-emitting diode assembly 201. The change in the number of red light emitting diode assemblies 202 and the design of the luminaire structure achieves high color rendering of the illuminating diode lamp while achieving a change in color temperature. For manufacturers of light-emitting diode lamps, the cost of new product development can be reduced, and the purpose of de-stocking can be achieved, so that the utilization of the light-emitting diode components is diversified.

When the light-emitting diode lamp with high color rendering provided by the invention illuminates the article, the natural color of the article can be presented more realistically, and can be applied to some color inspections, clinical examinations, and can also be used for color rendering of the art museum. A place with high sexual requirements.

Further, when the ratio of the number of the white light emitting diode assembly 201 and the red light emitting diode assembly 202 of the light emitting diode lamp is 2:1, two kinds of white light emitting diode components 201 and red light emitting are listed. The diode assembly 202 is arranged in a positional relationship. Referring to FIG. 4 , a red light emitting diode assembly 202 is disposed beside the two white light emitting diode assemblies 201 , and is emitted by the white light emitting diode assembly 201 and the red light emitting diode assembly 202 . After the light is mixed and passed through the first light diffusing component 301 and the second light diffusing component 302, there is a red glow on the visual effect. Referring to FIG. 5, the second embodiment is a red light emitting diode assembly 202 located at the center of the two white light emitting diode assemblies 201. The red halo phenomenon is reduced in visual effect, but the red spot is still visible.

Preferably, the ratio of the number of the white light emitting diode assembly 201 to the red light emitting diode assembly 202 of the light emitting diode lamp is 4:1. Referring to FIG. 6, the present embodiment uses a red light emitting diode. The body assembly 202 is located at the center of the four white light emitting diode assemblies 201. After the light is mixed and diffused through the first light diffusing component 301 and the second light diffusing component 302, a good uniformity effect is achieved, and the visual effect is achieved. No red spots appear. For the user, the LED lamp disclosed in this embodiment can not only achieve the advantages of high color rendering, but also has good light uniformity, which is ideal for the user, and can also reduce manufacturing for the manufacturer. The cost of high color rendering LEDs.

Further, referring to FIG. 7, the white light color temperature CCT emitted by the ordinary white light emitting diode assembly 201 is about 5000K, which belongs to a cool color temperature. The illuminating diode lamp assembly of the present invention combines the white light emitting diode assembly 201 and the red light emitting diode assembly 202, so that the color temperature of the illuminating diode lamp changes from a cool color temperature to a warm color temperature, and the white light illuminates through two The color temperature of the light-emitting diode lamp can be changed by simply changing the number of the polar body assembly 201 and the red light-emitting diode assembly 202. It is possible for manufacturers of light-emitting diodes to shorten the development time of new products.

In addition, in order to enhance the heat dissipation of the LED lamp and reduce the light decay of the LED assembly, the thermal paste may be disposed at the bottom of the lamp cup 100 in contact with the lamp housing 20, and then the lamp cup 100 and the lamp housing 20 are realized. The mechanical connection and the thermal connection can effectively dissipate heat to the red light emitting diode assembly 202 to alleviate the problem that the luminous efficiency of the red light emitting diode assembly 202 is attenuated as the temperature rises.

The light-emitting diode lamp provided by the present invention may further comprise a heat dissipating portion which is not shown in the drawing. The heat dissipating portion is made of a porous material or fin having good thermal conductivity, and the heat dissipating portion is heated to the lamp cup 100 and the lamp housing 20. Connections can also be placed in the heat sink to enhance heat dissipation.

Further, the heat dissipating portion further includes a fan, and the fan is electrically connected to a power source of the LED lamp.

The technical and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

no

10‧‧‧ Subject

100‧‧‧ light cup

101‧‧‧ platform

102‧‧‧ Groove

1021‧‧‧ side wall

1022‧‧‧ bottom

201‧‧‧White light emitting diode assembly

202‧‧‧Red light emitting diode assembly

301‧‧‧First light diffusing component

302‧‧‧Second light diffusing component

Claims (13)

A light-emitting diode lamp comprising a light-emitting diode assembly and a lamp cup, wherein the light-emitting diode assembly is disposed in the light cup, the improvement is that the light-emitting diode assembly comprises a white light-emitting diode component and a red light-emitting diode The body assembly, the lamp cup comprises a platform and a recess recessed in the platform, the white light emitting diode assembly is disposed on the platform of the lamp cup, and the red light emitting diode assembly is disposed in the recess of the lamp cup. The illuminating diode lamp of claim 1, wherein the white light emitting diode assembly is disposed around the red light emitting diode assembly. The illuminating diode lamp of claim 1, wherein the ratio of the number of the white light emitting diode component to the red light emitting diode component is 4:1 to 1:1. The illuminating diode lamp of claim 1, wherein the groove has a bottom and a side wall, and an angle between the bottom and the side wall is 30 to 60 degrees. The illuminating diode lamp of claim 1, further comprising a first PCB board electrically connected to the white light emitting diode component and a second PCB board electrically connected to the red light emitting diode component, The white light emitting diode assembly on the first PCB board is connected in series with the red light emitting diode assembly on the second PCB board. The illuminating diode lamp of claim 1, wherein the illuminating diode lamp comprises a second light diffusing component, and the second light diffusing component is disposed above the groove to diffuse red light. Light from the polar body assembly. The illuminating diode lamp of claim 6, wherein the illuminating diode lamp comprises a first light diffusing component, the first light diffusing component covering the opening of the lamp cup to diffuse the illuminating light The light emitted by the polar body. The illuminating diode lamp of claim 7, wherein the vertical distance between the first light diffusing component and the white light emitting diode component is 3 cm to 10 cm. The light-emitting diode lamp of claim 8, wherein the first light-diffusing component has a light transmittance of 70% to 90%. The illuminating diode lamp of claim 9, wherein the first light diffusing component is atomized. The illuminating diode lamp of claim 6, wherein the second light diffusing component has a light transmittance of 80% to 95%. The illuminating diode lamp of claim 11, wherein the second light diffusing component is atomized. The illuminating diode lamp of claim 1, further comprising a heat dissipating portion, the heat dissipating portion being a combination of one or more of a high thermal conductivity material, a porous material, a fin, a heat pipe or a fan.