CN2497430Y - Integrated electronic-rectifying high-voltage sodium lamp - Google Patents

Abstract

The utility model discloses an integrated electronic rectification high-pressure sodium lamp, especially a 50/70W high-pressure sodium lamp, which is composed of a screw socket, a shell, an electronic ballast, a heat-insulating lamp holder, and a sodium lamp tube; the electronic ballast is installed in the In the casing, a ballast heat shield is installed between the casing and the heat-insulating lamp holder, and the sodium lamp tube is installed in the heat-insulating lamp holder. It better solves the heat dissipation problem of the ballast and the sodium lamp tube. It integrates the ballast and the lamp tube, and is easy to use. The lamp can be directly screwed on the screw socket, and there is no need to install the ballast and the starter separately. ;The structure is compact and light, and can be widely used for lighting in streets, courtyards, mines, tunnels, lawns and other occasions.

Description

Integrated electronic rectification high pressure sodium lamp

technical field

The utility model relates to a high-pressure sodium lamp, in particular to an integrated electronic rectification high-pressure sodium lamp.

Background technique

At present, most of the ballasts matched with high-pressure sodium lamps are traditional inductive ballasts plus electronic starters and compensation capacitors. The disadvantages are bulky, large power consumption, and a wide range of operating voltages, and low-power sodium lamps cannot be compactly integrated. change. In recent years, some sodium lamp electronic rectifiers have also appeared, which are cheaper than traditional inductive rectifiers and have high power utilization. But its rectifier and lamp tube are still separated, which is inconvenient to install and use.

Utility model content

The utility model aims to solve the problem that the ballast and the lamp tube of the existing high-pressure sodium lamp, especially the 50/70W high-pressure sodium lamp, are separated, and provides an integrated electronic rectification high-pressure sodium lamp.

The utility model is realized by analyzing the structural characteristics of the existing high-pressure sodium lamp tube and ballast, and the main reason affecting its integration is the heating problem of the ballast and the sodium lamp tube during use. For this reason, the utility model is designed as a multi-layer heat-insulating structure, which is composed of a rib socket, a shell, a heat-insulating lamp holder, and a sodium lamp tube; There is a ballast heat insulation board between them, and the sodium lamp tube is installed in the heat insulation lamp holder.

The heat-insulating lamp holder described in the utility model is composed of an inner seat and an outer cylinder, and is a hollow structure, and there is a distance between the bottom plate of the inner seat and the bottom edge of the outer cylinder.

The heat insulation board described in the utility model has a double-chamber structure, and cooling holes are arranged on the walls of the two chambers.

Due to the adoption of the above structure, the utility model better solves the heat dissipation problem of the ballast and the lamp tube, integrates the ballast, the lamp tube, and the lamp cap into one, and is easy to use, and the lamp can be directly screwed on the socket lamp socket without Install the ballast and starter separately; the structure is compact and light, and can be widely used for lighting in streets, courtyards, mines, tunnels, lawns and other occasions.

Description of drawings

Accompanying drawing 1, the structural representation of the utility model embodiment;

Accompanying drawing 2, the utility model embodiment electronic ballast circuit diagram;

Detailed ways

Embodiment, as shown in accompanying drawing 1, the integrated electronic rectification high-pressure sodium lamp of the present utility model is made up of rib cap (1), housing (2), ballast (3), heat shield (4), heat insulation Lamp holder (5), lamp tube (6) form. The electronic ballast (3) is installed in the housing (2), and the rear end of the housing (2) is provided with cooling holes (21); the heat shield (4) is installed in the housing (2) and the heat-insulating lamp holder ( 5), the heat shield (4) is a double-chamber structure, and heat dissipation holes (41) are provided on the walls of the two chambers; the heat-insulating lamp holder (5) consists of an inner seat (51) and an outer cylinder (52) ) is composed of a hollow structure, there is a distance between the bottom plate of the inner seat (51) and the bottom edge of the outer cylinder (52), the hollow part of the heat-insulating lamp holder (5) and the front cavity of the heat dissipation plate (4) form an air cavity Body, so that the heat of the sodium lamp tube (6) can be removed through the cooling holes (41) on the air cavity, and will not continue to be transmitted to the tail of the lamp; the sodium lamp tube (6) is installed in the heat-insulating lamp holder (5) and sealed with silicone Potting.

As shown in Figure 2, it is an embodiment of the electronic ballast (3) of the present invention, which is composed of an active PFC circuit, a high-frequency drive circuit, and a high-voltage pulse trigger circuit. Bridge rectifier D1-D4, IC chip U1, transformer TR1, triode Q1 and resistance-capacitance components constitute an active PFC circuit, which has a high power factor > 0.99, low harmonic distortion, and when the grid voltage fluctuates, it can be used in capacitor C3 A stable 400V DC voltage is obtained; IC chip U2, transistors Q2, Q3 and resistance-capacitance components form a high-frequency drive circuit, and the parameters of resistors R12, R13 and capacitor C3 can be adjusted to obtain a drive frequency of 25KHZ, that is, the work of the ballast Frequency: Transformer TR2, trigger D8, resistor R17, and capacitor C12 form a high-voltage pulse trigger circuit. The DC current charges the capacitor C12 through the resistor R17. When it is charged to 120V, D8 is quickly turned on, and a voltage of more than 3000V is generated at both ends of the transformer TR2. High voltage triggers the conduction of the high pressure sodium lamp. Trigger D8 automatically stops working and no longer generates trigger pulses. Transformer TR2 acts as a ballast when the lamp works normally.

Since the electronic ballast in this embodiment adopts an active PFC circuit, the electronic ballast has a wide operating voltage, and can support normal operation when the input AC is 160V to 240V. And it can be restarted in hot state, and the restart time is less than 30 seconds.

The utility model can also select other forms of electronic ballasts, and the integration of its high-pressure sodium lamp tube and electronic ballasts all belongs to the protection scope of the utility model.

Claims (3)

1. The integrated electronic rectification high-pressure sodium lamp is characterized in that: it is composed of a screw cap, a shell, an electronic ballast, a heat-insulated lamp holder, and a sodium lamp tube; the electronic ballast is installed in the shell, and the A ballast heat shield is installed between the heat lamp holders, and the sodium lamp tube is installed in the heat insulation lamp holder. 2. The integrated electronic rectifying high-pressure sodium lamp according to claim 1, characterized in that: the heat-insulating lamp holder is composed of an inner seat and an outer cylinder, which is a hollow structure, and the bottom plate of the inner seat and the bottom edge of the outer cylinder have a spacing. 3. The integrated electronic rectification high-pressure sodium lamp according to claim 1, characterized in that: the heat shield is a double-chamber structure, and heat dissipation holes are provided on the walls of the two chambers.

Images