KR200240207Y1 - Light bulb using Cathode Cold Fluorescent Lamp - Google Patents

Abstract

According to the present invention, a socket having an electrically insulated hot electrode and a cold electrode formed therein, a through hole is formed therein, a socket is fitted at one end thereof, a jaw portion is formed at the other end inside, and a base formed with a screw at the outside thereof, at one end of the base. Inverter support plate to be coupled, an inverter fixed to the inverter support plate and electrically connected to the hot electrode and the cold electrode of the socket, a coil installed to surround the outside of the inverter support plate and the lead drawn from both electrodes is electrically connected to the inverter Disclosed is a light bulb to which a cold cathode fluorescent lamp comprising a cold cathode fluorescent lamp having a shape and a housing having one end coupled to a screw and having a cold cathode fluorescent lamp.

Description

Light bulb using Cathode Cold Fluorescent Lamp

The present invention relates to a light bulb to which a cold cathode fluorescent lamp is applied, and more particularly, to a light bulb to which an inverter and a coil-shaped cold cathode fluorescent lamp are arranged so as to overlap with each other and to which a cold cathode fluorescent lamp is reduced in size.

Conventional incandescent light bulb is composed of a mechanism in which the filament is housed in a bulb made of glass and the filament generates heat by applying power. Such an incandescent bulb is required to form a bulb inside the vacuum pressure at the time of manufacture, there is a difficulty in the manufacturing process. In addition, there is an inconvenience that often need to be replaced as often as about 1,000 hours, there is a problem that the power consumption is crucial. Moreover, since the bulb is made of glass, there is a drawback that it is easily broken by external impact.

Nevertheless, the reason why the incandescent bulb is used in various ways is that it can be installed in a narrow space compared to the fluorescent lamp, can be modified in various forms, can realize various colors, and the price is low.

On the other hand, US Patent No. 6,064,155 discloses a compact fluorescent lamp bent in the fluorescent lamp and embedded in the bulb.

However, the fluorescent lamp to be applied to the present invention must use a ballast which is essentially bulky, and there is a limit in reducing the diameter, so that the outer diameter is about 7 mm, which makes it difficult to compact. In addition, there is a problem that the life of the lamp is not so long in terms of economics considering the production of the product.

On the other hand, Utility Model Registration No. 9571 (filed April 4, 2001) filed by the present applicant proposes a light bulb to which a cold cathode fluorescent lamp is applied. In this design, however, the inverter and the cold cathode fluorescent lamp are connected in the longitudinal direction, so there is a limit in reducing the overall size.

Accordingly, an object of the present invention is to provide a compact light bulb in which the overall size is reduced by arranging the inverter and the cold cathode fluorescent lamp to overlap.

Other objects and features of the present invention will be more clearly understood through the preferred embodiments of the present invention described below.

1 is a cross-sectional view showing a light bulb according to an embodiment of the present invention.

2 is an exploded perspective view illustrating the light bulb of FIG. 1.

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

10: socket 20: base

30: inverter support member 40: inverter

50: cold cathode fluorescent lamp 60: housing

According to the present invention, a socket having an electrically insulated hot electrode and a cold electrode formed therein, a through hole is formed therein, a socket is fitted at one end thereof, a jaw portion is formed at the other end inside, and a base formed with a screw at the outside thereof, at one end of the base. Inverter support plate to be coupled, an inverter fixed to the inverter support plate and electrically connected to the hot electrode and the cold electrode of the socket, the coil is installed to surround the outside of the inverter support plate and the lead drawn from both electrodes is electrically connected to the inverter Disclosed is a light bulb to which a cold cathode fluorescent lamp comprising a cold cathode fluorescent lamp having a shape and a housing having one end coupled to a screw and having a cold cathode fluorescent lamp.

Preferably, the inverter support plate is cylindrical, and a pair of protrusions opposed to each other at regular intervals are formed in the longitudinal direction, and the inverter is sandwiched and fixed between the protrusions.

In addition, preferably, a reflective material is coated on the outer circumferential surface of the inverter support plate, and the heat dissipation holes are formed in the sealing end and the other end in a sealed form.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 and 2, the socket 10 is formed with an electrically insulated hot electrode 12 and a cold electrode 16, the cold electrode 16 is used as the body of the socket 10 itself. Hot electrode

As described later, the 16 and the cold electrode 12 are electrically connected to each other through the inverter 40 and the wire 14 to supply power.

The socket 10 is fitted to one end of the base 20, and the base 20 has a through hole 22 formed therein. A jaw portion 26 is formed inside the other end of the base 20, and serves to support the inverter support plate 30, as will be described later. In addition, the screw 24 is formed on the outer side of the other end of the base 20.

The inverter support plate 30 is preferably cylindrically fitted into the through hole 22 from the other end of the base 20 and supported by the jaw portion 26. A pair of protrusions 34 facing each other at a predetermined interval are formed in the longitudinal direction in the inverter support plate 30, and the inverter 40 is sandwiched and fixed between the protrusions 34.

In addition, the through hole 32 is formed at one side of the inverter support plate 30 so that the lead 52 of the cold cathode fluorescent lamp 50 is connected to the inverter 40. In addition, a suitable reflective material may be applied or a reflective sheet may be attached to the outside of the inverter support plate 30.

The inverter 40 is formed by mounting various electronic devices on a printed circuit board. For example, the inverter 40 is manufactured in a size of about 20 mm wide, 20 mm high, and 65 mm long.

The cold cathode fluorescent lamp 50 is bent in a coil shape with a tubular pipe having a diameter of 2.5 mm or less and installed to surround the outside of the inverter support plate 30. As described above, the through hole

A lead 52 withdrawn from both electrodes via 32 is electrically connected to the inverter 40.

The housing 60 surrounds the cold cathode fluorescent lamp 50 and has a screw (not shown) formed inside thereof and screwed to the screw 24 of the base 20. Preferably, the housing 60 is sealed, and heat dissipation holes 64 and 62 are formed at the sealing end and the other end, respectively, to release heat generated inside the housing 60.

In addition, the housing 60 is made of a transparent or translucent material, the diffusion material for diffusing the light from the cold cathode fluorescent lamp may be coated or uneven on the inner surface.

As described above, according to the present invention, a cold cathode fluorescent lamp is disposed on the outside of the inverter support plate, and an inverter is disposed on the inside to efficiently use space. Therefore, there is an advantage that can reduce the size of the overall bulb.

In addition, by including a reflective material on the outer surface of the inverter support plate, the light emitted from the cold cathode fluorescent lamp can be efficiently used.

Claims (4)

A socket on which an electrically insulated hot electrode and a cold electrode are formed; A base having a through hole formed therein, the socket being fitted at one end thereof, a jaw formed at the other end thereof, and a screw formed at the outside thereof; An inverter support plate coupled to one end of the base; An inverter fixed to the inverter support plate and electrically connected to a hot electrode and a cold electrode of the socket; A coil-shaped cold cathode fluorescent lamp installed to surround the outside of the inverter support plate and having a lead drawn from both electrodes electrically connected to the inverter; And And a housing surrounding the cold cathode fluorescent lamp and having one end coupled to the screw. The cold cathode fluorescent lamp of claim 1, wherein the inverter support plate has a cylindrical shape and has a pair of protrusions facing each other at a predetermined interval in the longitudinal direction, and the inverter is sandwiched and fixed between the protrusions. Bulb with lamp. The light bulb of claim 1, wherein a reflective material is coated on an outer circumferential surface of the inverter support plate. The bulb according to claim 1, wherein the housing is sealed, and heat dissipation holes are formed at the sealing end and the other end, respectively.