KR101023802B1 - Two-colored LED lamp - Google Patents

Abstract

The present invention relates to a two-color LED lamp, the main configuration of the base housing forming a base; A main PCB connected to the power supply unit through the base; A light shielding tube having a body portion extending coaxially from a bottom of a flange portion coupled to a bottom opening of the base housing; An optical casing made of a translucent material extending to surround the body of the light shield; A spectroscopic plate configured to divide a space between the body portion and the light casing into a first light diffusion space and a second light diffusion space; A plurality of first color LEDs attached to a bottom surface of the flange portion of the light shielding tube to surround the body portion and radiated to the first light diffusion space; And at least one second color LED attached to the light blocking tube and the bottom of the spectroscopic plate and irradiated to a second light diffusion space formed between the light blocking tube and the bottom of the spectroscopic plate and the optical casing. According to the above configuration, it is possible to reduce the unit cost by reducing the number of LEDs and greatly reduce the heat generation, so it is economical and has a long service life, and increases the light density in the optical casing to maintain the illuminance and emission state uniformly while providing two colors of light. Since it emits light without mixing, it is possible to provide a lighting device of two-color light emission that can replace an existing three-wavelength lamp or incandescent lamp.

 Lighting, lamp, two colors, LED, heat generation, shading tube, light casing

Description

Two-colored LED lamps

The present invention relates to a two-color LED lamp, and more particularly, by mounting a plurality of LEDs emitting different colors of light to the light shielding tube inside the light casing, having a feeling of being a three-wavelength lamp while being soft and bright in different colors. Color enhances the aesthetics by minimizing the light diffusion space inside and reduces the number of LEDs to reduce the amount of heat generated from the LEDs. It relates to an LED lamp.

In general, lighting lamps are intended for indoor lighting, but in recent years, a lot of decorative aspects have been emphasized. Therefore, the brightness for lighting is also important, but the appearance as an interior decoration is also increasingly important, accordingly, lighting lamps that can simultaneously meet the lighting performance such as illumination and interior decoration such as appearance have been actively developed.

As one example, the dichroic fluorescent lamp disclosed in Korean Utility Model Registration Application No. 20-2006-0015122.

This dichroic fluorescent lamp is shown in FIG. 1 by a low Kelvin temperature lamp 110 and a high Kelvin temperature lamp 130, the terminal member 150, the fluorescent material is applied to the inner side wall of the tube; As such, the two lamps 110 and 130 have different Kelvin temperatures for emitting light, and the terminal member 150 extends horizontally with the lamps 110 and 130 while integrating the lamps 110 and 130 and both sides of the lamps 110 and 130. The ends are wrapped and electrically connected to each other, and the terminals are connected to the lamps 110 and 130.

Therefore, the conventional dichroic fluorescent lamp 101 is electrically connected to the socket (not shown) provided in the fluorescent body (not shown), thereby making a low Kelvin temperature lamp 110 and a high Kelvin temperature lamp ( 130 emits light in different colors, that is, two colors.

By the way, the dichroic fluorescent lamp 101 as described above, by integrating the two lamps (110, 130) by the terminal member 150 to emit light in two colors, but enhances the aesthetic appearance, the terminal 170 according to the general properties of the fluorescent lamp ) Is formed at both ends and has an elongated shape as a whole, and the terminal is formed only at one end, and it is difficult to use as a replacement for incandescent lamps and three-wavelength lamps having a compact shape, and in terms of illuminance and lifetime, in particular, There was a problem of poor performance.

In addition, since the adjacent low Kelvin temperature lamp 110 and the high Kelvin temperature lamp 130 face each other, a considerable portion of the color emitted is superimposed on each other and is not clearly divided into two colors, so the aesthetics are also reduced. there was.

The present invention has been proposed to solve the problems of the conventional dichroic fluorescent lamp as described above, it is small enough to replace the conventional incandescent lamp or three-wavelength lamp, the lighting performance is excellent, as well as high price competitiveness, one Lights of different colors can be emitted at the same time, while the two different lights do not mix with each other to double the aesthetics, increase the intensity of light by increasing the light density in the optical casing, while reducing the number of LEDs that generate heat The purpose is to provide LED lighting lamps that can suppress the degradation of LED performance and shorten the life of the LED.

Accordingly, the present invention is to achieve the above object, the base housing which forms a base while being connected to the power supply by the base formed on the top; A main PCB mounted inside the base housing and electrically connected to the power supply unit through the base; A light shielding tube having a body portion extending coaxially from a bottom of a flange portion coupled to a bottom opening of the base housing; A light casing of translucent material coupled to a lower end of the flange portion of the light shielding tube and extending to surround the body portion of the light shielding tube; A spectroscopic plate radially extending at a lower end of the body to divide the space between the body and the light casing into a first light diffusion space and a second light diffusion space; A plurality of first color LEDs attached to a bottom surface of the flange portion of the light shielding tube to surround the body portion and irradiated to the first light diffusion space; And at least one second color LED attached to a bottom surface of the light blocking tube and the spectroscopic plate and irradiated to a second light diffusion space formed between the light blocking tube and the bottom of the spectroscopic plate and the light casing. Provide a lamp.

The light casing may include: a first casing portion coupled to a lower end of the flange portion of the light shielding tube to surround the outer peripheral surface of the body portion of the light shielding tube; And a second casing part detachably coupled to a lower end of the first casing part to surround the bottom surface of the light shielding tube and the spectroscopic plate.

In addition, the first and second color LEDs are top-view surface mount devices (SMDs), and the PCBs on which the first and second color LEDs are mounted are preferably metal PCBs.

In addition, the second color LED 15 'is preferably a large power LED.

According to the two-color LED lamp of the present invention, by adopting a low-cost, yet compact SMD LED as a light source, it is possible to maintain the shape and lighting performance more than conventional incandescent lamps or three-wavelength lamps, while the price is rather inexpensive It can be provided.

In addition, in order to provide an economical and high-performance LED lamp as described above, by attaching the LED of different colors to the internal space separated from each other, it is possible to simultaneously emit light of different colors in one lamp without mixing.

At the same time, even if the number of first color LEDs attached to the first optical casing decreases, the width of the first light diffusion space within the first optical casing is greatly reduced, thereby increasing the optical density inside the first optical casing and increasing the light absorption path. Not only can a sufficient amount of light be emitted to the outside by reducing the loss, but because the width of the first light diffusion space is constant in the axial direction, the amount of light emitted in the first light casing does not vary depending on the position.

Therefore, by not only mixing two colors of light in one lamp but also emitting light at the same time, not only can the aesthetics of the lamp be improved, but also the cost can be reduced due to the decrease in the number of LEDs, and the overall internal calorific value is greatly increased. It can reduce the performance due to high heat and shorten the lifespan, while maintaining excellent illuminance and uniformly emitting light, and thus economical lighting with compact structure, illumination and decoration such as three wavelength lamp or incandescent lamp. It is possible to provide means.

Hereinafter, a two-color LED lamp according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The two-color LED lamp of the present invention has a base housing (3), a main PCB (5), a light shielding tube (7), a light casing (9), a spectroscopic plate as shown in FIG. 2 and FIG. (10), a first color LED (11), and a second color LED (15), wherein first the base housing (3) is the base of the two-color LED lamp (1), in the incandescent lamp or the three-wavelength lamp Similarly, a base 21 for electrically and mechanically connecting the lamp 1 to a power source such as a light bulb socket is formed at an upper end thereof, and a plurality of ventilation holes for aeration are formed at an upper end of the circumferential surface adjacent to the base 21. 37 is penetrated in the circumferential direction, and a lower end opening 23 is formed at the lower end to engage the light shielding tube 7.

In addition, the main PCB (5) is a conventional PCB, as shown in Figures 2 and 3, mounted on the lower portion of the inner peripheral surface of the base housing 3 is electrically connected to the base 21, such as bulb sockets Bar power is supplied to the first and second color LEDs 11 and 15 through the light blocking tube 7 which is connected to the bottom surface. In addition, various circuits and terminals necessary for a control circuit and amplification circuit are mounted on the upper surface, and the remote control sensor 51 and the on-off switch exposed to the outside through the switch hole 38 penetrating the bottom of the base housing 3 are provided. 53 is mounted.

In particular, as shown in FIG. 3, one or more vent holes 39 penetrate between the center portion or various terminals or parts, and the inner space of the base housing 3 that passes through the vent holes 37 to the outside, and the light shield tube. (7) the body portion 27 is to connect the internal space.

2 to 4, the light blocking tube 7 is coupled to the lower opening 23 of the base housing 3 so that the first and second color LEDs 11 and 15 are optically cased. (9), the flange portion (25) which is detachably coupled to the base housing (3) lower end opening (23) by screwing or the like, and coaxial on the bottom face (29) of the flange portion (25). It consists of a body portion 27 that extends long, the flange portion 25 has a relatively larger diameter than the body portion 27, on the contrary the body portion 27 is compared to the flange portion 25 Since it has a relatively small diameter, a plurality of first color LEDs 11 can be arranged in a circular arrangement on the bottom face 29 of the flange portion 25 around the trunk portion 27. In addition, the flange portion 25 of the light shield tube 7 has a male thread portion 43 at the upper edge portion as shown in FIGS. 3 and 4 so as to be screwed into the lower opening 23 of the base housing 3. A male screw portion 45 for screwing the optical casing 9 is formed at the lower end of the outer circumferential surface thereof. At this time, the body part 27 is surrounded by the optical casing 9 to form the first and second light diffusion spaces L1 and L2 divided up and down by the spectroscopic plate 10. It is preferable that the outer circumferential surface is processed into a smooth reflective surface so that the light irradiated from the LED 11 can be more effectively diffused into the first light diffusion space L1, thereby forming a uniform light emitting surface.

In addition, the light shield 7 is preferably made of a metal material such as aluminum having high thermal conductivity so as to smoothly discharge heat generated from the first and second color LEDs 11 and 15.

On the other hand, the light shield cylinder 7 is a flange portion 25 and the body portion 27 can be made of a solid body, as shown in Figures 3 and 4, it is more preferable that the hollow body is formed when considering the heat generation performance Accordingly, the air passage 41 may pass through the flange portion 25 and the body portion 27 in the axial direction, and the dome or hemispherical portion at the bottom of the optical casing 9 is passed through the air passage 41. That is, the second light diffusion space (L2) and the inner space of the base housing (3) are interconnected to the outside air introduced into the base housing (3) through a plurality of vent holes 37, the second light diffusion space ( L2) can be supplied to the inside, and the air passage 41 also serves as a passage through which the power lines of the PCBs 33 and 35 on which the first and second color LEDs 11 and 15 are mounted pass.

2 and 3, the light casing 9 is detachably coupled to the lower end of the flange portion 25 of the light shielding cylinder 7 by screwing, so that the body portion of the light shielding cylinder 7 is provided. A member extending downward to surround (27), preferably made of a translucent material such as synthetic resin so that the light from the first color LED (11) can spread widely through the light casing (9) wall. Do. In particular, as shown in FIG. 2, the optical casing 9 has a body to maintain a constant radial spacing of the first light diffusing space L1 formed between the body of the light shielding barrel 7 and the body 27. It extends downward in parallel with the outer circumferential surface of the part 27, so that the distance from the surface of the trunk portion 27 to the inner circumferential surface is constant throughout the outer circumferential surface of the trunk portion 27, so that the appearance of light observed on the outer circumferential surface Make sure the brightness shows a uniform distribution.

In addition, the spectroscopic plate 10 divides the space between the body portion 27 and the light casing 9 of the light shielding tube 7 into a first light diffusion space L1 and a second light diffusion space L2. In part, the female threaded portion 14 is processed on the inner circumferential surface to be coupled to the male threaded portion 28 machined at the lower end of the trunk portion 27 so as to be in close contact with the inner circumferential surface of the optical casing 9, and extends in the radial direction so that the light shielding tube ( The space between 7) and the optical casing 9 is divided into first and second light diffusion spaces L1 and L2. Accordingly, the first light diffusion space L1 is irradiated by the first color LED 11, and the second light diffusion space L2 is irradiated by the second color LED 15, respectively. By blocking the light from being diffused into the second light diffusion space L2, the light density in the first optical casing 9 is increased, and the mixing of the first color and the second color is prevented.

Finally, the plurality of first and second color LEDs 11 and 15 are attached to upper and lower ends of the light shielding tube 7, respectively, so that the first and second colors of the first and second color LEDs 11 and 15 are respectively different. As a light emitting device that emits light in color, the color may of course be used differently. For example, the first color LED 11 is divided into a decorative light source having various colors, and the second color LED 15 is classified into a white light source. Can be used. In addition, the first and second color LEDs 11 and 15 are top-viewed to reduce the size of the two-color LED lamp 1, as shown in FIGS. 2, 3, 5, and 6. View type surface mount elements (SMD) are preferably used.

Here, the plurality of first color LEDs 11 attached to the flange portion 25 on the top of the light shielding tube 7 are as shown in FIGS. 2, 3, and 5, and the bottom surface 29 of the flange portion 25. The first light diffusion space (L1) is formed between the inner peripheral surface of the first light casing (9) and the outer peripheral surface of the body portion 27 is arranged in an annular shape so as to surround the body portion 27 of the light shielding tube (7) Are irradiated with the first color, and the plurality of second color LEDs 15 attached to the light shielding tube 7 and the bottom surface 31 of the spectroscopic plate 10 are shown in FIGS. 2, 3, and 6. As described above, the second light diffusion space L2 formed between the bottom face 31 of the light shielding tube 7 and the spectroscopic plate 10 and the lower part of the light casing 9 is irradiated with the second color.

At this time, it is preferable that the PCBs 33 and 35, on which the first and second color LEDs 11 and 15 are mounted, are made of a metal PCB in order to increase the heat dissipation performance of each of the LEDs 11 and 15. The PCB 33 on which the first color LEDs 11 are mounted has an annular bisection to be attached to the bottom face 29 of the flange portion 25 of the light shielding tube 7 as shown in FIGS. 3 and 5. Also, the PCB 35 on which the second color LED 15 is mounted is also circular so as to be attached to the light shielding tube 7 and the bottom surface 31 of the spectroscopic plate 10 as shown in FIGS. 3 and 6. Bars and vents 47 are formed in the center so as not to disturb the air flow to the vents 41.

Meanwhile, as another embodiment of the present invention, as shown in the two-color LED lamps 201 shown in FIGS. 7 and 8, the optical casing 9 includes the first casing part 12 and the second casing part 13. The first casing portion 12 is coupled to the lower end of the flange portion 25 of the shading barrel 7 and is translucent to surround the outer circumferential surface of the body portion 27 of the shading barrel 7. The second casing portion 13, which is formed of a cylindrical body of one material and is made of a semi-transparent material similarly to the first casing portion 12, is formed by a male screw portion 49 or the like processed at a lower end thereof. Removably coupled to the lower end, for example, preferably made of a light diffusing material such as plastic, dome or hemispherical shape so as to surround the bottom surface 31 of the light shield cylinder 7 and the spectroscopic plate 10 And the second light diffusion space L2 to form a second light diffusion space L2, which is different from the first casing part 12 through the second color LED 15 attached to the spectroscopic plate 10. A color of the second color is emitted, while the second casing part 13 penetrates a plurality of vents at a circumferential direction at a portion adjacent to the first casing part 12 to improve heat dissipation performance. You can even increase it.

In this case, the second color LED 15 is a plurality of small LEDs 15 formed of a top view type surface-mounting device, as shown in FIGS. 7 and 8, and the bottom surface of the light shielding tube 7 and the spectroscopic plate 10. The second light diffusion space L2 formed between 31) and the lower portion of the optical casing 9 is irradiated with the second color. In addition, the second color LED 15 ′ may be configured by only one LED as shown in the two-color LED lamp 301 shown in FIGS. 9 and 10 as another embodiment. 15'is preferably a large LED such as a high power power LED.

Now, the operation of the two-color LED lamp 1 according to the preferred embodiment of the present invention configured as described above.

The two-color LED lamp 1 of the present invention is equipped with a plurality of first and second color LEDs 11 and 15 in a compact structure inside the optical casing 9 so that the overall appearance looks like a three-wavelength lamp or an incandescent lamp. The LED lamp 1 can simultaneously emit light of different colors, that is, light of a first color selected from white, RGB, or other colors and a second color selected from colors other than the first color. do. In addition, the light diffusion space inside the optical casing irradiated by the first color LED 11 is reduced by the light shielding tube 7 to increase the light density, that is, mounted inside the first light casing 9, that is, the light shielding tube ( 7) By reducing the number of the first color LEDs 11 mounted on the outer circumferential surface as much as possible, the appearance of light of the first color emitted from the first optical casing 9 is uniformly visible, such as a three-wavelength lamp or incandescent lamp. While securing the illuminance and aesthetics, the internal heat can be minimized and the heat dissipation performance can be improved, thereby greatly improving mechanical performance such as durability and lifespan.

To this end, the two-color LED lamp 1 of the present invention is intended to be used by fitting the base 21 of the base housing 3 to the bulb socket of a lighting fixture such as a ceiling or a wall or a stand, such as a general incandescent lamp or a three-wavelength lamp.

As such, when the external power is supplied through the base 21 while the LED lamp 1 is inserted into the bulb socket or the like, the plurality of first and second color LEDs 11 and 15 are different from each other through the main PCB 5. It emits light in color, the amount of light emission can be adjusted by the amplification circuit or the resistance of the main PCB (5), remotely or by a radio signal received by the remote control sensor 51 exposed to the outer surface of the base housing (3) The on-off switch 53 can directly turn off the first and / or second color LEDs 11, 15.

At this time, the light of the first color emitted from the first color LED 11 is irradiated downward to the first light diffusion space L1, and part of the light is directly emitted through the light casing 9, and part of the light shielding tube After reflecting off the surface of the trunk portion 27 in (7), it passes through the optical casing 9 and diverges outward. In addition, the light of the second color emitted from the second color LED 15 is irradiated downward to the second light diffusion space L2 and is emitted to the outside through the dome-shaped bottom portion of the light casing 9.

In particular, as shown in FIGS. 2 and 3, even if only one line is disposed outside the flange portion 25, the first color LED 11 reduces the width of the first light diffusion space L1, thereby reducing the optical density. It is not only possible to emit a sufficient amount of light to the outside and to reduce the loss due to absorption, and the outer circumferential surface of the first optical casing 9 because the width of the first light diffusion space L1 is constant without changing along the axial direction. Therefore, it is possible to maintain a uniform light emitting state without deviation in the longitudinal direction.

Accordingly, the two-color LED lamp 1 of the present invention evenly spreads the light passing through the optical casing (9) to give a visual effect that looks even and soft as a three-wavelength lamp, as well as to ensure the appropriate amount of light Since the number of LEDs required can be minimized or greatly reduced, it is possible to suppress degradation of mechanical performance such as life due to heat generation.

The same applies to the two-color LED lamps 201 and 301 shown in FIGS. 7 to 10, except that the two-color LED lamps 201 and 301 are provided with the optical casing 9 having screws of the first and second casing portions 12 and 13. Since it is assembled by the combination and can be separated from each other, the dichroism of the two-color LED lamp 201 can be made more distinct as well as the second color by changing the colors of the first and second casing portions 12 and 13 from each other. Handling of the color LEDs 15 and 15 ', such as putting on and taking off, can be made easier.

In addition, the light shield cylinder 7 has a hollow cylindrical structure having an aeration passage 41 as a whole as shown in FIGS. 2 to 4, and the flange portion 25 of the upper end has a lower opening ( 23) or having the same diameter as the optical casing (9) is not only exposed to the outside of the LED lamp (1) but also the material itself is made of a metal material with a high thermal conductivity, the outside through the outer peripheral surface of the flange portion 25 In, through the vent 41, the heat emission is made smoothly from the inside to double the heat dissipation performance of the two-color LED lamp (1). Furthermore, although not separately shown, heat radiation fins may be formed on the air passage 41 of the light shielding tube 7 or on the outer circumferential surface of the body portion 27 or on the inner circumferential surface of the base housing 3 or on the wall of the optical casing 9. By forming a vent hole, the heat dissipation performance of the two-color LED lamp 1 can be further enhanced.

1 is a perspective view showing a conventional dichroic fluorescent lamp.

Figure 2 is a longitudinal front view of a two-color LED lamp according to the present invention.

3 is an exploded perspective view of the two-color LED lamp shown in FIG.

4 is a perspective view of the light shield shown in FIG. 2.

FIG. 5 is a bottom view of the plurality of first color LEDs shown in FIG. 2; FIG.

FIG. 6 is a bottom view of the plurality of second color LEDs shown in FIG. 2; FIG.

Figure 7 is a longitudinal front view of a two-color LED lamp according to another embodiment of the present invention.

8 is an exploded perspective view of the two-color LED lamp shown in FIG.

9 is a longitudinal front view of a two-color LED lamp according to another embodiment of the present invention.

10 is an exploded perspective view of the two-color LED lamp shown in FIG.

Description of the Related Art

1,201,301: LED lamp 3: Base housing

5: main PCB 7: shading tube

9: optical casing 10: spectroscopy

11, 15: 1st and 2nd color LED 12, 13: 1st and 2nd casing part

21: Base 25: Flange

27: body part 33, 35: PCB

37, 39, 47: Aeration 41: Aeration

Claims (4)

A base housing 3 connected to the power supply unit by a base 21 formed at an upper end thereof and forming a base; A main PCB (5) mounted inside the base housing (3) and electrically connected to the power supply unit through the base (21); A light blocking tube 7 extending from the bottom of the flange portion 25 coupled to the bottom opening 23 of the base housing 3 so that the body portion 27 extends coaxially; An optical casing (9) made of a translucent material coupled to a lower end of the flange portion (25) of the light shielding tube (7) and extending to surround the body portion (27) of the light shielding tube (7); Radially extending at the lower end of the body portion 27 to divide the space between the body portion 27 and the light casing 9 into a first light diffusion space L1 and a second light diffusion space L2. A spectroscopic plate 10 adapted to be; A plurality of first color LEDs 11 are attached to the bottom surface 29 of the flange portion 25 of the light blocking tube 7 so as to surround the body portion 27 and irradiated to the first light diffusion space L1. ; And It is attached to the light shield cylinder 7 and the bottom surface 31 of the spectroscopic plate 10 and is formed between the light shielding cylinder 7 and the bottom surface 31 of the spectroscopic plate 10 and the optical casing 9. Two-color LED lamp, characterized in that consisting of; at least one second color LED (15,15 ') irradiated to the second light diffusion space (L2). According to claim 1, The optical casing 9, A first casing portion 12 coupled to a lower end of the flange portion 25 of the light shielding tube 7 to surround an outer circumferential surface of the body portion 27 of the light shielding tube 7; And And a second casing part 13 detachably coupled to a lower end of the first casing part 12 to surround the light shielding tube 7 and the bottom surface 31 of the spectroscopic plate 10. Two colors of LED lamps to make. The method of claim 2, The first and second color LEDs 11 and 15 are top-view surface mount devices (SMDs), and the first and second color LEDs (11 and 15) are mounted on a PCB ( 33, 35) is a two-color LED lamp, characterized in that the metal PCB. The method of claim 2, The second color LED (15 ') is a two-color LED lamp, characterized in that a large power LED.

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