KR20090117281A - Round pole emitting led lamp - Google Patents

Abstract

PURPOSE: A columnar light emitting type LED lamp is provided to circularly emit a light by forming an optical pattern in an acryl tube and an optical structure. CONSTITUTION: An optical pattern is formed in an inner surface of a columnar acryl tube. A first reflector(10) is arranged in a rear surface of the optical pattern in order to be attached to the optical pattern. An LED mounting groove is formed in an optical structure. The optical structure is inserted to an end of the columnar acryl tube. A second reflector(8) is arranged on a surface of the columnar acryl tube. A third reflector is arranged in a cutting surface of the end of the columnar acryl tube. An optical diffusion material(9) is coated on a whole surface of the columnar acryl tube. An LED device(6) is mounted in the LED mounting groove.

Description

Circumferential Light Emitting Diode Light Lamp {ROUND POLE EMITTING LED Lamp}

In the field of light emitting diodes (LEDs), the surface area of light emitting diode chips is typically 350 * 350.

Small or Normal Chip, 600 * 600 Micrometer

If you have a medium power chip, 1000 * 1000 micrometers or more

Therefore, in the present invention, a light emitting diode device using a small light emitting diode chip is a low power type light emitting diode device and an intermediate type.

The light emitting diode device using the above light emitting diode chip is a large power type

It will be defined and described as a light emitting diode device.

Conventional light emitting diode lamps typically have one or more low-power light emitting diode elements mounted on a metal printed circuit board inside a cylindrical acrylic tube to be installed and sealed inside the resin tube, and the light diffusion film inside or inside the resin tube. Using the light source

It was made invisible. Therefore, the conventional light emitting diode lamp is a general

Light directivity was limited because it could not emit light with a uniform uniform brightness like a fluorescent lamp, and it was lit by installing and sealing a light emitting diode element in a resin tube.

In the light emitting diode device, a temperature is increased gradually, resulting in a decrease in luminance due to heat generation of the light emitting diode device, and even a loss of the light emitting diode device.

In particular, to use a high power light emitting diode device to obtain high brightness,

Since power is applied twice as much as area compared to light emitting diode device

Problems caused by heat generation have become more serious. Therefore, conventional fluorescent lamps cannot use large power light emitting diode elements.

Light Emitting Diodes (LEDs) used in LED lighting

Manufactured based on gallium nitride (GaN) or silicon carbide (SiC) materials, light emitting diode chips made from both materials have low light conversion efficiency, so that only about 15-20% of the applied power is converted to light and consumed The remaining amount of power (80-85%) is converted into heat, which is the main cause of heat generation of the light emitting diode device. In other words, of the LED chip

If the light conversion efficiency is 100%, the heat generation should be theoretically absent, but the countermeasure against heat generation is important because 100% of the conversion efficiency is practically impossible.

Therefore, in the present invention, by providing a light emitting diode element at both ends or one end of the acrylic tube which is a light source of the cylindrical light emitting diode lamp, to facilitate the heat dissipation design,

The optical pattern is installed inside the acrylic tube and the efficient optical structure

A large power columnar shape that emits light in an annular (circular) shape with high brightness by providing

It provides a technology and method for manufacturing a light emitting diode lamp.

The columnar light emitting diode lamp of the present invention is a light emitting diode element is a columnar acrylic tube

By installing it at the end, heat dissipation can be achieved even if a large power light emitting diode device is installed.

It is easy to do it and is the same as original one-character cylindrical fluorescent lamp

The present invention relates to a large power type high brightness light emitting diode lamp that emits light uniformly in a ring along a circle.

The background of the technology of the columnar light emitting diode lamp of the present invention is from the light emitting diode element.

Point lighting source that emits light to provide the optical structure of the present invention

It is a technology and manufacturing method for converting a columnar resin tube into a light source.

Therefore, the main structural form of the columnar light emitting diode lamp of the present invention,

The optical structure that reflects the light emitted from the light emitting diode element in an annular shape,

A structure (FIG. 2) (hereinafter referred to as an optical structure) in which a groove in which the light emitting diode element is to be installed is integrally formed and an optical pattern for emitting incident light to the outside of the tube are installed on the inner surface of the tube.

Circumferential acrylic tube, a reflector to be installed on the back of the optical pattern,

It is made of a light diffusing material (diffusion sheet, diffusion tube) to uniformly diffuse.

Generally, poly (Methyl Methacrylate) is used as a material that passes light well. The light transmittance of acryl is generally 92%, which is the highest among general resins, and thus is widely used in the optical field. That's why acrylic is also used in light guide panels (LGPs) in LCD backlights.

Thus, the columnar light emitting diode lamp of the present invention has also been proven in LCD backlights.

Using the acrylic and reflector materials and the cylindrical light emitting diode structure of the present invention

Combined to complete.

Conventional light emitting diode lamps include a low power light emitting diode device on a printed circuit board.

After installing one or more, insert it into the acrylic tube and place it inside or outside the acrylic tube.

It was prepared by coating a diffusion sheet and sealing both ends of the tube. Such conventional

The light emitting diode light structure is sealed inside the acrylic pipe,

Even if the efficiency is low and the heat radiation path is long,

Therefore, the conventional light emitting diode lamp has a problem with the above.

It is not possible to use the high power light emitting diode device and use the low power light emitting diode device.

List a plurality of resin tubes

Insert and seal and apply diffusion sheet on resin tube surface or inner surface

Prepared by an invisible method.

However, the columnar light emitting diode lamp of the present invention is provided with a light emitting diode element serving as a light source at the center of the optical structure in which the light emitting diode element is installed and the reflective structure is integrally formed, and the light is incident on the tube layer by the reflection angle of the optical structure. and,

Light emitting diode light emitting diode technology and structure that emits light to the outside of the tube by an optical pattern stamped on the acrylic tube (carving the curved shape on the mother and pressing the object to the object in the shape of the mother). To provide.

In addition, the columnar light emitting diode lamp of the present invention has a light emitting diode element externally

Since it is installed, the length of connection with the heat dissipation structure is short and the connection is easy.

It is easy to apply the light emitting diode device, and to the optical structure and the optical pattern of the present invention

Acrylic tube becomes a cylindrical light source and emits annular light

Provided are cylindrical light emitting diode lamps.

Therefore, to summarize the technical problem for realizing the columnar light emitting diode lamp of the present invention, since the light emitting diode element is installed outside,

Effectively without losing the light of the light emitting diode device into the acrylic layer of the acrylic tube

It is a technology to make a cylindrical light source by entering.

So, in the present invention, at the space center of both ends or one end of the acrylic tube

The light emitted from the light emitting diode device is incident without loss into the acrylic layer

It provides a separately produced optical structure {Fig. 2} (optical structure), and also the inside of the acrylic layer

Use optical patterns on the inner surface of the acrylic tube to make the light outward

Light is emitted outside the acrylic, and light that is not partially reflected by the optical pattern (approximately 30% in LCD backlight-tested technology)

The reflector is installed on the back to increase the emission efficiency. Therefore, the light emitted from the acrylic tube to the outside passes through the light diffusing material (diffusion sheet, diffuser tube) to ensure uniform and high efficiency,

High-brightness, high-power columnar LEDs are completed.

Briefly describing the columnar light emitting diode light structure of the present invention,

Point light source emitted from the light emitting diode device to the optical structure of the present invention

It is a light induction technology that makes an acrylic tube into a columnar light source by efficiently inducing it into an acrylic layer. Therefore, in order to complete the columnar light emitting diode lamp of the present invention, the acrylic tube should function as a cylindrical light source. To do that

An optical structure (hereinafter referred to as an optical structure) that uniformly inserts the light emitted from the light emitting diode device into the acrylic tube layer is required, and the light entering the inside of the columnar acrylic tube layer is refracted and emitted to the outside of the acrylic tube. The optical pattern to make

need. To explain more clearly, the light-emitting plate uses a side-emitting LCD backlight

In the optical structure, the light source and the light guide plate may be understood as rolling. Thus, in the present invention, the light emitted from the light emitting diode element is made of acryl with the same refractive index as the tube as a method for injecting the light into the columnar acrylic tube layer.

An accommodation groove in which the light emitting diode element is to be installed and an annular reflective structure are integrally formed.

The optical structure {Fig. 2} is installed in close contact with the end of the acrylic tube without loss of light

To enter the tube layer,

(Refractive index of acrylic is 1.49. When the optical structure is closely inserted at the end of the tube, there is a space between the tube and the optical structure,

Light is scattered or arbitrarily refracted at the bonding surface, which reduces light incident efficiency.)

The inner surface of the cylindrical acrylic tube is provided with an optical pattern in the form of a sawtooth (V-Cut) or a dot (dot).

It is installed by a stamping method to provide an optical pattern to emit most of the incident light to the outside of the acrylic tube, and on the back of the optical pattern (inner side of the tube) to increase light emission efficiency.

The reflector is installed. The reflector can be made of resin reflective sheet or metal plating.

Next, if the reflector is installed on the tube surface at the position incident from the optical structure,

Light incident on the tube is reflected back by the installed reflector and along the tube layer

While the light is mostly refracted by the optical pattern and partially internally refracted (about 30% in the proven technology of the side-emitting LCD backlight), the light is installed behind the optical pattern.

Reflected by the reflector and emitted to the outside of the tube, the optical pattern and the optical pattern

The light propagated to the end of the acrylic tube without refracting by the reflector installed on the back,

Reflectors are installed at both ends of the acrylic tube, including the outer exposed surface of the optical structure, to the cut surface of the tube, and finally, the light diffuser (diffusion sheet or pipe) is placed on the outer surface of the tube.

By providing, the structure of the columnar light emitting diode lamp of the present invention is completed.

* The reason why the optical pattern is stamped in the above is that the optical pattern should theoretically totally reflect the incident light, because there is a slight curvature on the surface of the optical pattern or the processing becomes dim, and the reflection efficiency is decreased in the LCD backlight field (mirror surface processing).

The surface condition commonly used as is very important.

A more detailed description will be described in detail in the detailed description for the practice of the invention.

The present invention effectively realizes efficient induction and emission of light

The light efficiency is higher than that of the light emitting diode lamp, and by installing the light emitting diode device outside, heat dissipation can be easily performed, and thus, the high power type light emitting diode device can be mounted. In an illusion by installing

It is possible to provide a high-brightness cylindrical light emitting diode lamp that emits light.

The round pole light emitting diode (LED) lamp of the present invention

The acrylic tube 1 becomes a light source and the light emitting light source (light emitting diode element) is an acrylic tube

One-shaped light emitting diode (LED) like original fluorescent lamp installed at both ends

The electric lamp {representative diagram: FIG. 3} will be described as an example of an embodiment.

The cylindrical light emitting diode lamp of the present invention has a low power and a large power light emitting diode device by attaching the light emitting diode device to the outside of the cylindrical acrylic tube.

Thus, the present invention provides the columnar light emitting diode lamp of the present invention.

First of all, the light transmittance is the highest acrylic among the resin (light transmittance: 91% -93%)

Light is applied to the inner surface of the acrylic tube using a cylindrical acrylic tube (1).

V-Cut or dot-shaped optical pattern 2 that can be refracted is pressed into the entire inner surface of the tube (engraving the curved shape to the mother and applying the pressure to the object to the object in the shape of the mother). Process) and install it.

When processing, the density of the optical pattern is higher the farther from the light source, the acrylic tube

The thinner the thickness (see detail (3)), the higher the light emission uniformity. (This theory has already been shown to reduce luminance with optical distance in the edge emitting technology of LCD backlight unit.

As a supplement to the generalized technical background, detailed description will be omitted.)

That is, light incident on the cylindrical acrylic tube provided with the optical pattern is transmitted by the optical pattern 2.

Refraction occurs and the light is emitted to the outside of the acrylic tube. If the distance from the light source is farther away, light attenuation occurs according to the transmittance.

It is a technology that compensates for light attenuation by processing thickness thinly according to distance. Next, a reflector is installed on the back of the optical pattern, and the light goes linearly.

Instead of the incident light, the wave

About 30% (detailed description is omitted since it has been verified by the LCD side-emitting backlight unit technology) is reflected back of the optical pattern, so that the optical loss occurs, so that the optical pattern (3) and the back of the optical pattern to minimize the optical loss The reflector 10 is installed to be in close contact with each other so as to increase the light emission efficiency, and an inverted conical vertex 7 faces the center of the front surface where the accommodating groove on which the light emitting diode device is to be mounted is formed of a refractive index material such as an acrylic tube. In the form of a view, the annular reflection angle and the light emitting diode receiving groove

The optical structure formed integrally (FIG. 2) is inserted into the ends of both ends of the acrylic tube provided with the optical pattern 2 and the reflector 10 is fixed in close contact with the acrylic tube 2 and the optical structure provided with the optical pattern. This is integrated physically and optically.

On the other hand, an optical structure having an embossed reflection angle may be provided based on the technology of the present optical structure, or a light reflector 5 such as metal may be coated on the engraved surface of the reflective angle.

Therefore, the light emitted from the light emitting diode element 6 is refracted in an annular shape by the optical structure {FIG.

However, if the angle of incidence is large when the light enters the acrylic tube, a part of the light exits directly outside the columnar acrylic tube at the incident position.

The reflector 8 is installed on the surface of the cylindrical acrylic tube so that the incident light proceeds in parallel along the acrylic tube layer, and the light that is not reflected by the optical pattern passes through the tube and is lost at the end of the tube. Exposed surface of the optical structure

Light source operation using the columnar acrylic tube of the present invention is completed by installing the reflector 12 at the end cutting surface of the tube and totally reflecting the tube layer.

Once again, the light path and structure of the columnar LED of the present invention

In summary, the light emitted from the light emitting diode element 6 is formed in the optical structure (FIG. 2).

It is circularly reflected by the conical reflection structure and is incident on the tube layer, and is secondly reflected by the reflector 12 installed on the surface of the acrylic tube where the light is incident. The primary emission is caused by the pattern (3)

The light refracted by the rear surface of the optical pattern is further reflected by the reflector 10 disposed on the rear surface of the optical pattern, and the remaining light is reflected by the reflector 12 installed at the end of the tube without being reflected by the optical pattern. When the inside of the acrylic layer is repeatedly moved in contact with the optical pattern, additional emission occurs, so that the light incident on the tube is emitted to the outside of the acrylic tube 2 having the optical pattern.

That is, the columnar light emitting diode light structure of the present invention emits light from the light emitting diode element.

The light provides an optical structure that emits only outside the circumference of the acrylic tube,

Finally, to ensure that the light emitted from the outside of the acrylic tube is evenly emitted

The light diffusing material 9 is coated on the entire surface of the columnar acrylic tube, and the light emitting diode element 6 is installed and fixed in the light emitting diode element accommodating groove of the optical structure.

By connecting, high power type and low power to emit light in the annular shape of the present invention

A general columnar light emitting diode lamp capable of mounting a light emitting diode element in combination is completed.

Figure 1 (1) is a cylindrical acrylic tube to be used as a light source of the light emitting diode lamp,

       (2) is provided with the sawtooth-shaped optical pattern on the light source tube of the light emitting diode lamp

            Section view,

       (3) is a detailed sectional view of an optical pattern,

2 is an optical structure in which an installation groove and a cone-shaped engraved reflection angle to which a light emitting diode device is installed are integrally formed.

3 is a completed structural cross-sectional view of a light emitting diode lamp.

                  * Description of Symbols for Main Parts *

(5): Reflector is coated on the back of the reflection angle of the optical structure

(6): A light emitting diode device is provided in an optical structure. (7): A vertex of the reflection angle of the optical structure. (8): A reflector for propagating light incident from a light source along an acrylic tube layer. ): A light diffusing layer coated with a light diffusing material, (10): a reflector provided on an inner surface of an optical pattern, (11): a power line of a light emitting diode element, and (12): reflecting light lost to a cutting surface of an acrylic layer. It is a reflector for this.

Claims (6)

A columnar light emitting diode lamp having the light emitting diode element 6 as a light emitting light source will be described. In manufacturing, In order to make the columnar acrylic tube 1 into a light source of a side emitting type light emitting diode lamp, an optical pattern 2 is provided on the inner surface of the columnar acrylic tube, and a reflector 9 is provided so as to be in close contact with the back of the optical pattern. An accommodating groove is formed in which the diode element 6 is to be mounted and is annular. The optical structure in which the reflective structure is integrally formed {Fig. 2} at the end of the cylindrical acrylic tube Inserted and fixed in close contact, the reflector 8 is installed on the surface of the columnar acrylic tube at the position where the optical structure {FIG. 2} and the tube are bonded, and includes an exposed surface of the optical structure. Reflectors 12 are provided on both end surfaces of the acrylic tube, light diffusing material 9 is coated on the entire surface of the cylindrical acrylic tube, and the light emitting diode element is placed at the end of the cylindrical acrylic tube. A cylindrical light emitting diode lamp, characterized in that the light emitting diode element (6) is provided in the light emitting diode element accommodating groove so that the acrylic tube becomes a cylindrical light source and emits light in an annular shape. The method according to claim 1, The optical pattern installed on the columnar acrylic tube is made by Characterized by an optical pattern. The method according to claim 1, The optical pattern provided on the inner surface of the columnar acrylic tube is made by pressing so that the thickness of the optical pattern becomes thinner and farther from the light emitting diode element installation position, the thickness is thinner. The method according to claim 1, The optical structure is an inverted conical vertex facing the center of the front surface formed with the receiving groove to be mounted the light emitting diode element, the optical structure characterized in that the annular reflection angle and the light emitting diode element receiving groove is made integral. The method according to claim 1, The optical structure is an optical structure, characterized in that the reflection angle is installed in the conical shape of the embossed in the position facing the front face where the receiving groove to be installed the light emitting diode element is installed. The method according to claim 4, An optical structure, characterized in that the reflector (5) is installed in close contact with the inclined surface of the reflection angle made of conical intaglio installed in the optical structure.

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