CN201421831Y - Annular electrodeless fluorescent lamp with cooling mechanism - Google Patents

Abstract

The utility model relates to a ring-shaped electrodeless fluorescent lamp with a heat dissipation mechanism, comprising: two bridges (20) connected to another semi-ring glass lamp tube (6); The magnetic ring hoop (2) of the body (8), the ferrite (8) and the coil (10) with 5-30 turns wound on the ferrite (8); also includes: the magnetic ring hoop (2) and heat-conducting silicone grease (30) between the ferrites (8); the heat sink (40) is directly fabricated around the magnetic ring hoop (2); a heat sink (50) is installed at the bottom of the glass lamp tube (6); The beneficial effects of the utility model are: the high temperature generated by the magnetic ring can be taken away and dissipated when the ring-shaped electrodeless fluorescent lamp is working, so that the ring-shaped electrodeless lamp can maintain stable power in harsh ambient temperatures without attenuation of light efficiency.

Description

Annular electrodeless fluorescent lamp with cooling mechanism

technical field

The utility model relates to an annular electrodeless fluorescent lamp, in particular to a cooling device for the annular electrodeless fluorescent lamp.

Background technique

Electrodeless fluorescent lamps (or electromagnetic induction lamps) are energy-saving products with no electrodes, no filaments, high luminous efficacy, long life, and no liquid mercury. It is widely used in places that require natural light but are inconvenient to replace lamps or bulbs, such as: road lighting, factory lighting, mining lighting, railway tunnels, airports, ports, gas stations, textile and printing and dyeing industries, indoor sports fields, large conference rooms , auditorium hall, parking lot lighting, large advertisements, hypermarkets, etc.

In 1991, the EverCight electrodeless lamp of Panasonic Corporation of Japan, the Genura electrodeless lamp of GE General Company in 1994, the LQ electrodeless lamp of Philips Company in 1997, and the upward electromagnetic wave radiation device of the electromagnetic induction lamp in China in 2004 (patent number 200320122269.4), their Most of the working principles are the same, that is, converting electrical energy into magnetic energy, and converting magnetic energy into light energy, so they all belong to electrodeless fluorescent lamps. In terms of structure, it is also similar. Basically, there is no heat dissipation device, and the electrodeless lamp without heat conduction and heat dissipation device will have the following disadvantages:

When the electrodeless lamp is working, the lamp itself will generate a temperature of 90-125°C, so the magnetic ring (ferrite) attached to both ends of the lamp will also increase with the temperature of the lamp, and the output of the ballast will increase. For 100-500KHz high-frequency alternating current, the ferrite itself will also generate heat of 20-60°C. It can be seen that the ferrite has been working at a temperature of 110-185°C, and the whole lamp is installed in a place with high ambient temperature. Or in lamps with poor heat dissipation conditions, the ferrite is likely to be saturated or fail, resulting in the failure of the entire lamp.

It can be seen from Fig. 1B that the lamp tube structure includes: a ring-shaped lamp tube 6, an exhaust pipe 5 is arranged on the inner arm of the ring-shaped lamp tube 6, and the inside of the ring-shaped lamp tube 6 is filled with gas 11 and phosphor powder 12, A first hoop 1 and a second hoop 2 are respectively installed at both ends of the glass tube, and a first fixing hole 3 and a second fixing hole 4 are respectively provided on the first hoop 1 and the second hoop 2 .

It can be seen from Fig. 1A that the first ferrite 7 and the second ferrite 8 are installed in the first hoop 1 and the second hoop 2, and each of the first ferrite 7 and the second ferrite 8 is wound with A first coil 9 and a second coil 10 . Since the above-mentioned structure does not have a heat dissipation device, it has strict requirements on the temperature of the working environment and the ventilation of the lamps, which limits the application of the electrodeless lamp and restricts its popularization.

Contents of the invention

The technical problem to be solved by the utility model is to provide a ring-shaped electrodeless fluorescent lamp with a heat dissipation mechanism, aiming at solving the above-mentioned problems.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

The utility model comprises: two bridges connecting the other semi-circular glass lamp tube; the bridges include: a magnetic hoop surrounding ferrite, ferrite and 5-30 rings wound on the ferrite It also includes: thermal grease between the magnetic ring hoop and the ferrite; the heat sink is directly made around the magnetic ring hoop; a heat sink is installed at the bottom of the glass lamp tube.

Compared with the prior art, the beneficial effect of the utility model is that the high temperature generated by the magnetic ring can be taken away and dissipated when the ring-shaped electrodeless fluorescent lamp is working, so that the ring-shaped electrodeless lamp can maintain stable power in harsh ambient temperatures, The light effect is not attenuated.

Description of drawings

Fig. 1A is a structural schematic diagram of an annular electrodeless fluorescent lamp in the prior art;

Figure 1B is a top view of Figure 1A;

Fig. 2A is the structural representation of the utility model;

FIG. 2B is a top view of FIG. 2A.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

It can be seen from Fig. 2A and Fig. 2B that the utility model includes: two bridges 20 connected to the other semi-circular glass lamp tube 6; the bridges 20 include: a magnetic hoop 2 surrounding a ferrite 8, an iron Ferrite 8 and coil 10 of 5-30 turns wound on ferrite 8; also includes: thermal conductive silicone grease 30 between magnetic ring hoop 2 and ferrite 8; radiator 40 is directly made on magnetic ring hoop 2 around; a cooling fin 50 is installed on the bottom of the glass lamp tube 6;

The radiator 40 is tooth-shaped and consists of 1-50 teeth.

The heat sink 50 is used to be close to the two ends of the magnetic ring hoop 2 and the lower side is a flat plane; the other side of the heat sink 50 is a wire groove for the lead wire of the coil 10;

1-10 fixing holes 51 are opened on the plane of the heat sink 50 .

One side of the heat sink in the utility model is a whole plane, which is used to cling to the lower hoops at both ends, reaching the glass lamp tube for fixing the hoops, and also plays a role in heat dissipation. High-frequency radiation is also suppressed; 1-10 fixing holes are opened on the plane of the heat sink to facilitate the fixed installation of the entire lamp tube.

Radiator 40 in the utility model is tooth-shaped, is made up of 1-50 teeth, is respectively made around the upper hoop and the lower hoop.

The heat-conducting silicone grease, radiator and heat sink of the utility model form an integral heat dissipation structure, which solves the problem that the high temperature generated by the lamp tube and the magnetic ring is effectively taken away and dissipated by the heat-conducting silicone grease, radiator and heat sink. The rectangular electrodeless lamp can maintain stable power and stable light effect in harsh ambient temperature. The rectangular electrodeless lamp can be installed in a sealed lamp with poor heat dissipation conditions, and will not be affected by harsh conditions such as the place of use and the sealed lamp.

Claims (4)

1. the annular electrodeless florescent lamp that cooling mechanism is arranged comprises: 2 bridge joints (20) that connect another semi-circular glass lamp (6); It is characterized in that: locate to comprise: the coil (10) that surrounds the magnet ring anchor ear (2), ferrite (8) of ferrite (8) and the 5-30 circle on the ferrite (8) at described bridge joint (20); Also comprise: the heat-conducting silicone grease (30) between magnet ring anchor ear (2) and ferrite (8); Radiator (40) directly be produced on magnet ring anchor ear (2) around; A fin (50) is installed in the bottom of glass lamp (6).

2. the rectangle electrodeless fluorescent lamp that cooling mechanism is arranged according to claim 1 is characterized in that: described radiator (40) is the dentation type, is made up of 1-50 tooth.

3. the rectangle electrodeless fluorescent lamp that cooling mechanism is arranged according to claim 1 is characterized in that: the one side that described fin (50) is used to be close to below the magnet ring anchor ear (2) at two ends is a leveling face; The another side of fin (50) is a trough that is used for coil (10) lead-out wire.

4. the rectangle electrodeless fluorescent lamp that cooling mechanism is arranged according to claim 3 is characterized in that: have 1-10 fixing hole (51) on the plane of described fin (50).

Images