KR20090119196A - A led bulb socket - Google Patents

Abstract

PURPOSE: An LED bulb socket is provided to improve brightness of an LED bulb by emitting a heat generated in an AC/DC converter or a DC/DC converter through a heat sink. CONSTITUTION: A bulb socket(30) includes an AC/DC or DC/DC converter(31), a heat sink(32), and a plurality of heat pipes(33). The AC/DC or DC/DC converter converts an external AC or DC power into a DC power. The heat sink emits a heat generated from the AC/DC or DC/DC converter to outside. The heat pipes are thermally connected to an LED bulb(40). The heat pipes are arranged in the heat sink in order to deliver a heat generated in the LED bulb. The LED bulb is coupled in the bulb socket with one touch method.

Description

LED bulb socket {A LED bulb socket}

The present invention relates to an LED bulb socket, and more particularly, a heat radiation structured AC / DC or DC / DC converter inside the bulb socket to move heat generated during AC / DC or DC / DC conversion to the socket. The present invention relates to a LED bulb socket with a new structure that can save power by increasing the brightness of the bulb.

As is well known, the research and development of lighting fixtures that illuminate the interior space of a general building is proceeding in consideration of two aspects of energy efficiency and satisfying the needs of consumers.

Currently, luminaires such as incandescent bulbs, fluorescent lamps and three-wavelength bulbs are the most widely used.

The incandescent bulb, invented by Edison in 1879, is a light source in which a filament wire is heated to a high temperature and gets light by temperature radiation when the filament wire is put into a glass of vacuum and power is applied. The mixture of argon and nitrogen is added to suppress evaporation to prolong life.

Conventional incandescent light bulbs emit light close to natural light, which can reduce eye fatigue and are easily removable in sockets, which have been widely used for many years. However, most energy is emitted as heat and only a part of light is used for thermal efficiency. It has the disadvantage of being low.

However, the company plans to gradually stop the production of incandescent bulbs around the world, and in the United States, a new lampholder was needed due to the 2014 production shutdown plan.

In recent years, it is possible to use a bright, bright LED (Light Emitting Diode) for a general light bulb, which has a lower power consumption than a conventional incandescent light bulb and has a long lifespan. One example is shown in FIGS. 1A-1B.

1A and 1B are views showing the structure of a conventional LED incandescent bulb.

Referring to FIG. 1A, a light bulb socket 10 and an LED bulb 20 are configured. Bulb socket 10 is a conventional incandescent bulb socket, LED bulb 20 is to use the existing incandescent bulb socket as it is. That is, the LED bulb 20 can be screwed into the bulb socket 10 provided in the existing installation. The detailed structure of the LED bulb 20 is as shown in Fig. 1B.

1B, LED 21 is used for LED bulb 20 as a light source. The LED 21 is fixed to the substrate 22. The glass sphere 23 is provided on the board | substrate 22 so that the LED 21 may be enclosed. Below the board | substrate 22, the heat sink 24 which discharge | releases the heat which generate | occur | produces from the LED 21 to the outside is provided. Inside the LED bulb 20, a driver 25 for operating the LED 21 is provided. The driver 25 is configured as an AC / DC or DC / DC converter for DC-converting external power supplied through the bulb socket 10 to supply DC power necessary for the LED 21. At the lower end of the LED bulb 20, a bulb base 26 having a cylindrical electrode formed on the outer circumferential surface thereof is provided, which is screwed into the bulb socket 10 so as to contact the electrodes of the bulb socket 10 with electricity. It is formed to be.

However, the existing LED bulb is difficult to handle the heat generated when the AC / DC or DC / DC conversion by installing an AC / DC or DC / DC converter inside the bulb, there is a risk of electric shock, compact There is a difficulty in design. That is, the conversion efficiency is about 85%, and the rest is changed to heat or noise. In addition, there is a case where the screw type fixed connection between the bulb socket and the LED bulb is loosened by ambient vibration.

Accordingly, an object of the present invention has been made in view of the above-mentioned point, and built-in AC / DC or DC / DC converter of the heat dissipation structure inside the bulb socket to move the heat generated from the converter to the socket to increase the brightness of the LED bulb It is to provide a LED bulb socket of a new structure to improve the power saving.

The LED bulb socket of the present invention for achieving the above object includes a bulb socket for moving the heat generated during DC conversion to the socket by a built-in converter of a heat-dissipating structure for DC conversion of the external supply power, and LED bulb, The bulb socket and the LED bulb are characterized in that they are electrically connected and thermally connected to each other.

LED bulb socket of the present invention, a heat-dissipating AC / DC or DC / DC converter inside the bulb socket to move the heat generated when converting to DC power to the socket to improve the brightness of the LED bulb to save power, Even if the LED bulb is touched, there is no risk of electric shock, and the compact design of the LED bulb has an easy effect. In addition, by changing the coupling between the LED bulb and the bulb socket to a one-touch structure to solve the problem of loosening due to the surrounding vibration, it is possible to configure the heat dissipation structure at a lower cost than the expensive heat sink structure attached to the bulb and mass production by mounting in the invisible This is possible, and has the effect of producing a light bulb in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 is a view showing the LED bulb socket structure according to the present invention.

2, the light bulb socket 30 and the LED bulb 40 are configured. The bulb socket 30 is a socket of a new structure proposed by the present invention, the LED bulb 40 is to be used in accordance with the modified structure of the bulb socket 30. That is, the LED bulb 40 is fitted to the bulb socket 30 in a one-touch structure. The one-touch structure is a known technique already used in a three-wavelength lamp and the like, and thus, a detailed description thereof will be omitted. The light bulb socket 30 has an AC / DC converter having a heat dissipation structure, and is electrically connected and thermally connected to the LED bulb 40. Here, the case of an AC / DC converter is taken as an example, but a DC / DC converter may be built in according to a use. The detailed structure of the light bulb socket 30 and the LED bulb 40 is as shown in FIG.

Referring to FIG. 3, the bulb socket 30 has an AC / DC converter 31 that converts AC 220V supplied from the outside into required DC power. The AC / DC converter 31 is provided with a heat sink 32 for dissipating heat generated from the AC / DC converter 31 to the outside, i.e., the ceiling space. Here, the heat sink 32 is made of aluminum or a ceramic material, and the heat dissipation surface area is widened to draw out heat. Since the heat-pipe 33 wrapped with the heat sink 32 has a vertical direction, the two heat pipes 33 may be inclined at least 7 ° in opposite directions so that at least one of the heat pipes 32 may play a role regardless of the installation position of the socket. do. The heat-pipe is a hollow inside the pipe, where the liquid contains ammonia, methanol, freon, etc., and vaporizes the liquid by heat and cools it when it meets cool air and cools it. It is a cooling device made to transfer heat from the heat source to the heat sink by repeating the isothermal change cycle between the vapor and the gas phase. A plurality of connection holes 34 are provided in the lower part of the case of the bulb socket 30 housing the heat dissipation structure so as to allow electrical connection and thermal connection with the LED bulb 40.

On the other hand, LED bulb 40 is made of the same as the structure of the existing LED bulb, including a light source LED 41 and the substrate 42 to which the LED 41 is fixed, the structure of the bulb socket 30 Accordingly, the portion of the connection structure with the bulb socket 30 is changed. More specifically, the heat dissipation plate 43 having a heat dissipation function is provided below the substrate 42 to dissipate heat generated from the LED 41 to the outside. Here, the heat sink 43 is thermally connected with the heat pipe 33 of the bulb socket 30. In the center portion of the LED bulb 40 housing the heat dissipation structure, an insertion hole 44 is formed in which a heat pipe 33 of the bulb socket 30 is inserted to form a connection passage so as to be thermally connected to the heat sink 43. In the peripheral portion thereof, the DC connection contact 45 is protruded to correspond to the connection hole 34 of the bulb socket 30 so as to be in electrical contact with each of the connection holes 34 of the bulb socket 30. At this time, the contact 45 is composed of four for the red (R), green (G), blue (B) and the ground (Common) of the LED (41). Of course, if it consists of only one color LED, it can be composed of two contacts including ground.

In the one-touch coupling of the bulb socket 30 and the LED bulb 40 having such a configuration, the heat-pipe 33 of the bulb socket 30 is inserted through the insertion hole 44 of the LED bulb 40 so that the heat sink 43 ) And thermal connection is made. In addition, protruding contacts 45 of the LED bulb 40 are fitted into the connection holes 34 of the bulb socket 30 so that electrical connection is made. The AC / DC converter 31 built in the light bulb socket 30 converts the AC 220V power supplied from the outside into the DC power required to drive the LED 41 and supplies the LED to the LED bulb 40 connected to the LED. 41) lights up. At this time, heat generated by the AC / DC converter 31 dissipates heat to the outside through the heat sink 32, and heat generated by the LED 41 is heat-pipe 33 thermally connected to the heat sink 43. Move to the bulb socket 30 through. As the heat generated by the LED 41 is moved to the bulb socket 30, the temperature rise is prevented and the brightness of the LED bulb 40 is improved. This will be described with reference to the graph of FIG. 4.

4 is a graph showing an LED thermal characteristic table, in which the horizontal axis represents the junction temperature (° C) of the LED chip, and the vertical axis represents the relative light output (%), respectively.

Referring to the graph of FIG. 4, when the internal temperature of the LED chip is 40 ° C., the relative brightness is 100%, and when the internal temperature is increased to 100 ° C., the relative brightness is 80% and the brightness drops 20%. Therefore, it can be said that when the internal temperature is lowered and the same brightness is maintained, the electricity consumption is reduced by 20% or more. In other words, if the brightness is kept at the same time by preventing the temperature rise, the power saving effect is the same. Therefore, since the heat generated from the LED 41 is moved to the bulb socket 30 through the heat-pipe 33 to prevent the temperature rise of the LED 41, it is maintained without lowering the brightness to save power.

Typically, since the bulb socket 30 is embedded in the ceiling, as shown in FIG. 5 when the ceiling is mounted, in the present invention, since the heat generated by the AC / DC converter 31 is discharged into the interior space of the ceiling, the AC / DC converter Relative brightness is improved compared to the conventional LED bulb 20 that is generated from the heat emitted from the room as it is.

Although the present embodiment has been described with reference to LED bulbs employing an AC / DC converter, the same applies to LED bulbs employing a DC / DC converter like a vehicle LED bulb. In addition, the same may be applied to the shape of the fluorescent lamp as well as the incandescent lamp.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

Figure 1a-1b is a view showing the structure of a conventional LED incandescent bulb,

2 and 3 is a view showing the LED bulb socket structure according to the present invention,

4 is a graph showing an LED thermal characteristic table;

Figure 5 is a state diagram showing the indoor heat movement during the ceiling installation.

<Description of the symbols for the main parts of the drawings>

10,30: bulb socket 20,40: LED bulb

31: AC / DC converter 32,43: heat sink

33: heat-pipe 34: connection hole

41: LED 42: substrate

44: insertion hole 45: contact

Claims (4)

A light bulb socket configured to include a heat-dissipating converter that converts external supply power to DC, thereby transferring heat generated during DC conversion to a socket; And Includes LED bulbs, LED bulb socket characterized in that the bulb socket and the LED bulb is electrically connected and thermally connected to each other. The light bulb of claim 1, wherein the bulb socket is A converter for converting AC or DC power supplied from the outside into the required DC power and supplying the LED to the LED bulb; A heat sink for dissipating heat generated during DC conversion in the AC / DC or DC / DC converter to the outside; And And a plurality of heat pipes disposed on the heat sink to be inclined in opposite directions to transfer heat generated from the LED bulb by thermal connection with the LED bulb. The method of claim 2, wherein the LED bulb is A heat sink for dissipating heat generated from the LED which is a light source to the outside; A plurality of contacts for electrical connection with the electrical sockets; And And an insertion hole for forming a heat-pipe connecting passage of the electric socket to heat-connect the heat sink and the heat-pipe. The LED bulb socket according to claim 1, wherein the bulb socket and the LED bulb are inserted and fastened in a one-touch structure.

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