RU2297082C1 - Contact system of lighting device - Google Patents

Abstract

FIELD: electric engineering.

SUBSTANCE: contact system of lighting device consists of socket with internal threaded surface, side and central contact and base, made in form of barrel with external threaded surface, with side contact surface, contact washer, isolator and central electrode. Base is made of solid dielectric material, while side contact element of base is made of electro-conductive material, and is inserted into threaded system of base. Contact elements are provided with electric outputs, made of flexible isolated wire, passing in internal section of base. Control elements for light sources are built into internal cavity of cylindrical body. Electronic board with lighting devices is mounted on external surface of body. Aforementioned board is covered by transparent disperser.

EFFECT: simplification and increased reliability of contact system of lighting device, increased precision and decreased costs.

8 cl, 8 dwg

Description

The claimed invention relates to the electrical industry, in particular to the production of lighting devices, and can be used in the manufacture of contact systems for lighting with low heating of the housing, in particular for LED light sources.

The known contact system of the lighting device described in the USSR author's certificate No. 1372430, IPC H01R 33/22 "Cartridge for electric incandescent lamps with a threaded base", publ. 02/07/1988.

The known contact system comprises a threaded system consisting of a cartridge with side and central contact and a base made in the form of a cylinder with side contact, a contact washer and an insulator.

A disadvantage of the known contact system is that the lateral contact surfaces of the threaded system of the base and the cartridge have an area many times greater than the contact area between the contact washer of the base and the central contact of the cartridge. To form the lateral contact surface of the base requires a large amount of metal, and the light fixture itself has a relatively large weight.

Closer in technical essence and adopted as a prototype, is a contact system of a lighting device containing control elements and a cylindrical threaded system. In turn, the threaded system consists of a cartridge with an internal threaded surface, side and central contact and a base, made in the form of a glass with an external threaded surface, side contact, contact washer and insulator. See, for example, RF patent No. 2193809, IPC H01R 33/22 "Lamp holder", publ. November 27, 2002 in B.I. Number 33.

The known contact system provides good contact between the side surfaces of the cartridge and cap.

However, in it, as well as in the analogue, the threaded surfaces are made of metal and have a large area. Such a design of threaded surfaces for modern lighting devices cannot be considered rational, since a lot of metal is consumed for their production and they are difficult to manufacture. In addition, traditional cartridges and socles are heavy.

Modern LED light sources have significantly greater efficiency in converting electrical energy into light energy than incandescent lamps (LF). In particular, for example, light emitting diodes (LEDs) provide a light output of three to five times greater than LN. In the future, it is planned to increase the light efficiency of LEDs by another two to three times. In other words, lamps in which the LED is the light source, with the same luminous flux as the LN, consume several times less electrical energy. Therefore, the surface of the contact system for light sources that use LEDs with low current densities can be significantly reduced. In addition, the heating of the housing of LED light sources does not exceed 50 ° C, which allows the use of plastic in the design of contact elements. The duration of continuous illumination of LED lamps reaches 100 thousand hours, which is 200 times longer than the life of the LV. If a home lamp shines on average 5 hours a day, then an LED lamp in this mode can last at least 50 years. Thus, a need arose for the development of a new contact element for light sources based on LEDs.

The aim of this invention is to provide a simple and reliable contact system for a lighting device with a cylindrical threaded surface and central and lateral contact, which, while maintaining the traditional shape, has less weight, less metal consumption and provides a good and reliable electrical contact between the light source and the power source. Additionally, the task is to simplify the manufacturing technology of contact elements of the system, increase their strength and reduce cost.

This goal is achieved due to the fact that in the known contact system of the lighting device containing controls and consisting of a cartridge with an internal threaded surface, side and central contact and a base made in the form of a glass with an external threaded surface, with a side contact surface, a contact washer , an insulator and a central electrical wire connecting the contact washer to the light source, according to the invention, the base is made of solid dielectric material, on the side externally on the ground surface of the base there is a contact element made of electrically conductive material, which has an electrical lead made of a flexible insulated wire and passing inside the base, the central electrical wire is made of a flexible insulated wire passing inside the base, in the upper part of the base there is a cylindrical body with a printed circuit board and with light devices , the controls are located inside the cylindrical body, and the length of the flexible wires is greater than the height of the base.

In an embodiment of the technical solution, the contact element of the electrically conductive material is located in the lower part of the cap.

In a variant of the technical solution, a cartridge with an internal threaded surface is made of solid dielectric material.

In a technical solution, the contact element of the electrically conductive material of the cap is mounted on its external threaded surface, repeats the relief of the thread of the threaded surface and covers only part of the threaded surface of the cap on one side, and the threaded surface of the cartridge is made of electrically conductive material and has electrical contact with the side contact.

In a variant of the technical solution, the contact element of the electrically conductive material is made in the form of a spring-loaded metal rod extending into the hole available in the threaded surface of the base.

In a variant of the technical solution, the base is made of an elastic material.

In a variant of the technical solution, the base is sealed and filled with an inert gas with overpressure.

The execution of the base of a solid dielectric material can reduce the weight of the entire structure.

The location of the controls in the upper part of the cap in a cylindrical housing with a printed circuit board and with light devices makes it possible to reduce the overall dimensions of lighting devices made using LEDs.

The location of the contact element of the electrically conductive material in the lower part of the base will allow the use of a lightweight base and standard cartridge for LED lamps.

The implementation of the cartridge with an internal threaded surface of solid dielectric material will reduce the metal consumption of the product, reduce its weight and simplify the manufacturing technology.

The location of the contact element of the electrically conductive material on its external threaded surface and repeating the relief of the thread, and the execution of the threaded surface of the cartridge from an electrically conductive material having electrical contact with the side contact, makes it possible to organize a reliable contact for light devices of relatively high power.

The implementation of the contact element of the electrically conductive material in the form of a spring-loaded rod extending into the hole in the threaded surface of the base, simplifies the manufacturing technology of the base.

The execution of the base of the elastic material will provide the best electrical contact between the electrically conductive contact surfaces of the cartridge and the base and will reduce the likelihood of spontaneous unscrewing.

The execution of the cap is sealed and filling it with an inert gas with excess pressure will contribute to a more dense contact of the contact elements. This is due to the fact that if the contacts do not touch each other tightly enough, they heat up, heat the gas located in the base and the latter, expanding, will press the contacts to each other.

The use of flexible wires extending from the contact washer and side contacts of the base, the length of which is greater than the height of the base will simplify the installation of light elements on the base.

The contact system of the lighting device is illustrated by 8 figures.

Figure 1 presents the light device with a base having a contact element of an electrically conductive material located at the bottom.

Figure 2 shows the cap on the side of the contact washer.

Figure 3, 4 - base with a contact element of an electrically conductive material of the surface of the dielectric threaded system in two projections.

Figure 5 has a section of the cap of figure 4.

Figure 6 shows a cartridge with a lateral threaded contact.

Figure 7 presents the base with a contact element of an electrically conductive material, made in the form of a spring-loaded metal rod emerging in the hole available in the threaded surface of the base.

On Fig there is a base, the housing of which is made of elastic material.

Details common to all figures are identified identically.

The contact system of the lighting device consists of a base 1 (figure 1, 2), made in the form of a glass 2, on the surface of which there is a cylindrical thread 3. On the upper part of the base there is a hollow cylindrical body 4 with sides (not marked) in the upper and lower parts . The outer diameter of the housing 4 is larger than that of the glass 2. The outer diameter of the cylindrical housing 4 is determined by the dimensions of the printed circuit board 5 mounted on the sides of its end outer surface. The base is made of solid dielectric material. In the lower conical part of the glass 2 there is a lateral contact element in the form of a surface 6 having the form of a hollow truncated cone made of an electrically conductive material, for example, metal. This contact element represents a layer located on the outer surface of the dielectric cup. Its area and location depends on the lateral contact surface of the standard cartridge and should be in contact with it like a standard base. A printed circuit board 5 is mounted on the upper front surface of the cylindrical housing 4, on which LEDs 7 are located. In the lower part of the circuit board 5, a light-emitting unit 8 is installed inside the cylindrical housing 4. The circuit board 5 with LEDs 7 is closed by a transparent diffuser 9. The control system is located in block 8 containing a voltage converter (converter), current stabilizing elements and, if a voltage converter is required, for example, into a series of pulses (not indicated). The control system may include other auxiliary devices. A flexible wire 10 is connected to the contact surface 6, extending inside the base and which is connected by its second end to the light-emitting unit 8. In the lower, central part of the base 1 there is a contact washer 11, also inserted into the dielectric material of the base and insulated from the contact surface 6 by the same dielectric the material from which the base is made. Departing from the contact washer 11 is an insulated flexible wire 12 soldered to it, passing inside the cap and connecting its second end to the light-electronic unit 8. Base 1 is screwed into a standard cartridge (not shown), which is connected to an electric power source. The standard cartridge has a spring-loaded central contact in contact with the contact washer 11 of the base and a springy arcuate side contact in contact with the side contact surface 6 of the base 1.

In a variant of the technical solution, a cartridge with an internal threaded surface is made of solid dielectric material, while its central and lateral contacts have a traditional design.

In an embodiment of the technical solution, the lateral contact element of the electrically conductive material is a surface 13 (Figs. 3, 4, 5) located on the surface of the thread 3 of the cup 2 of the cap 1 and repeats the relief of this thread. The contact surface 13 covers part of the threaded surface of the glass 2, located only on one side of it. This contact surface is made of an electrically conductive material, for example, in the form of a metal layer. All other elements of the system are similar to figure 1. The cartridge in this case contains a plastic housing 14 (Fig.6), a central contact 15 and a threaded side contact 16 made of an electrically conductive material. The threaded surface of the cartridge 16 is electrically connected to the jumper 17. Electrical wires 18 and 19 of the external power supply are connected respectively to the central terminal 15 and to the jumper 17. The thread 16 of the cartridge matches the thread 3 of the cap.

In an embodiment of the technical solution, the contact element of the electrically conductive material is made in the form of a rod 20 (FIG. 7) protruding into the hole 21, which is located in the threaded plastic surface of the cap 1. On the back side, the rod 20 is supported by a spring 22, the second end of which abuts against the opposite inner basement wall. In this case, the protruding surface of the metal rod repeats the relief of the thread 3 of the base 1. The rod can be made of metal or plastic. In the latter case, the electrically conductive material is deposited on its protruding part, to which the wire 10 is also supplied.

In an embodiment of the technical solution, the cup 2 of the cap 1 is made of an elastic dielectric material. At the same time, the basement case glass is made in the form of an accordion 23 (Fig. 8). The lateral contact element of an electrically conductive material located on the surface of the base can be made either in accordance with figure 1, 2 (standard cartridge or cartridge, the housing of which is made of plastic), or, according to figure 3, 4, i.e. located on its threaded surface. In the latter case, a cartridge with a threaded contact surface should be applied (Fig.6).

In a variant of the technical solution, the cap 1 is sealed and inert filled with gas with overpressure. The basement glass has the same form as in Fig. 7, i.e. made in the form of an accordion. Such a base can also be produced in different versions of the contact surface and used in conjunction with the corresponding cartridge.

The contact system of the lighting device operates as follows.

A base made of a dielectric material in which a contact element of an electrically conductive layer is located in its lower part (FIGS. 1, 2) can be applied to all standard cartridges intended for standard socles. The introduction of only such a cap is an interim solution. A radical solution is the use of a cartridge with an internal threaded surface made of solid dielectric material. In this case, the greatest reduction in metal consumption and the weight of the contact elements is achieved.

The use of a socle with a contact element of an electrically conductive layer inserted into its external threaded surface (Figs. 3, 4) requires a special cartridge, the threaded surface of which is made of an electrically conductive material (Fig. 5). Such a technical solution is justified if a high power light source is used.

The manufacturing technology of such contact systems is simple, and the cost of production is minimal.

The base with a spring-loaded rod (Fig.6) works as follows. If the base is in the idle position, the spring-loaded rod 18 protrudes slightly beyond the threaded surface of the base (1-2 mm). When screwing it into the cartridge, the rod slides into the cavity of the cap, and the spring 20 provides it with pressure against the contact surface of the cartridge. Such a constructive solution makes it possible to greatly simplify the manufacture of the base housing. The cartridge must be made in accordance with figure 5, i.e. have a threaded contact surface.

The execution of the cap of the elastic material will provide an additional contact clamp. A similar effect is obtained when the base is sealed and filled with excess pressure gas. If, for some reason, the contact clip weakens, then they heat up. The gas in the cap, heating, increases the volume of the cap and presses the contacts.

The proposed base can be made by casting, widely used in the manufacture of various plastic products, and will greatly simplify the production of both the base itself and the light sources made on the basis of LEDs.

Claims (8)

1. The contact system of the lighting device, containing the control elements and consisting of a cartridge with an internal threaded surface, a side and central contact, and a socle made in the form of a glass with an external threaded surface, with a side contact surface, a contact washer, an insulator, and a central electric wire connecting the contact a washer with a light source, characterized in that the base is made of solid dielectric material, a contact element of eleme is installed on the lateral outer surface of the base conductive material, which has an electrical output made by a flexible insulated wire and passing inside the base, the central electrical wire is made of flexible insulated wire passing inside the base, a cylindrical body with a printed circuit board and light devices is installed in the upper part of the base, control elements are located inside the cylindrical body and the length of the flexible wires is greater than the height of the cap. 2. The contact system of the lighting device according to claim 1, characterized in that the contact element of an electrically conductive material is located in the lower part of the base. 3. The contact system of the lighting device according to any one of claims 1 and 2, characterized in that the cartridge with an internal threaded surface is made of solid dielectric material. 4. The contact system of the lighting device according to claim 1, characterized in that the contact element of an electrically conductive material is mounted on its external threaded surface, repeats the thread relief of the threaded surface and covers only part of the threaded surface of the cap on one side, and the threaded surface of the cartridge is made of electrically conductive material and has electrical contact with the side contact. 5. The contact system of the lighting device according to any one of claims 1 to 4, characterized in that the contact element is made of an electrically conductive material in the form of a spring-loaded rod extending into an opening in the threaded surface of the base. 6. The contact system of the lighting device according to claim 5, characterized in that the spring-loaded rod is made of metal. 7. The contact system of the lighting device according to claim 5, characterized in that the spring-loaded rod is made of plastic, its part protruding into the hole is coated with an electrically conductive material. 8. The contact system of the lighting device according to any one of claims 1 to 4, characterized in that the base is sealed and filled with an inert gas with overpressure.

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