CN101329039A - LED fluorescent lamp - Google Patents

Abstract

The invention relates to an LED fluorescent lamp, which comprises a lamp tube, end covers at two ends of the lamp tube and terminals on the end covers, wherein the end covers comprise a main end cover and an auxiliary end cover, and the auxiliary end cover can rotate relative to the main end cover and can be positioned at a certain proper angle. Therefore, the included angle between the light-emitting direction of the lamp tube and the two terminals can be adjusted to meet the requirements of different fluorescent lamp holders. The invention can be used on fluorescent lamp holders with different specifications, has strong applicability and plays a promoting role in popularizing the LED lamp.

Description

LED fluorescent lamp

technical field

The invention belongs to the field of illumination and relates to an LED fluorescent lamp.

Background technique

As a sunrise industry, LED has been widely used in various scenes that require light. Especially the recent development of LED technology has greatly improved the luminous efficiency of LED, so it is also favored by the lighting market. In indoor lighting, fluorescent lamps, or fluorescent lamps, are the most commonly used at present. There are also many kinds of fluorescent tubes made of LEDs as light sources on the market today. With the excellent performance of LEDs, they have become a new type of lamps to replace fluorescent lamps. In order to meet market demand and people's usage habits, the existing LED fluorescent tubes generally follow the shape and installation method of fluorescent tubes, and are made into tubes with two terminals installed at both ends, and then the terminals are inserted into the lamp holder. After installing in the seat, rotate the lamp tube to a suitable angle to complete the installation. For the two kinds of lamp tubes, the fluorescent lamp tube can emit light in 360-degree directions due to its own working principle, but it only plays a lighting role on the 180-degree direction facing the light emitting direction of the lamp holder. Although there is a reflector at the bottom of the lamp holder layer, but there is still some light loss; while the light source part of the LED tube is a flat LED light board, considering the lighting requirements of only 180-degree light output, it is not necessary to achieve 360-degree light emission, but only 180-degree light emission , This not only makes the structure of the LED fluorescent tube simple, but also saves the production cost, so the LED fluorescent tube is generally made into a 180-degree light emitting scheme. When using the LED lamp tube, it is necessary to consider the angle problem during installation. It is necessary to adjust the angle between the two terminals and the light emitting surface of the LED lamp tube to meet the requirements of the lamp stand mounting seat, so that the light output of the LED lamp tube The surface is perpendicular to the lighting plane in the light emitting direction of the lamp holder, and is facing the direction that needs to be illuminated. For today's LED fluorescent tubes, once the included angle is determined, it cannot be changed.

There are many kinds of lamp stands on the market today. Because the 360-degree light emission of fluorescent lamps can be applied to all lamp stands, there is no uniform production standard for fluorescent lamp stands. According to the angle between the slot for the fluorescent tube terminal on the lamp stand mounting base and the lighting plane of the lamp stand, the most common ones are 90 degree angle, 45 degree angle and 0 degree angle. Stands with other angles are excluded. When replacing fluorescent tubes with LED fluorescent tubes, there may be problems with inconsistent angles. After the LED fluorescent tube is installed on the light stand, it may be able to be used correctly on the light stand at some angles, but the light emitting direction of the LED fluorescent tube cannot be in the correct position on the light stand at other angles.

Contents of the invention

In view of the above problems, the present invention provides an LED fluorescent lamp, which can be used in fluorescent lamp stands with various angles, and can keep the light emitting direction of the lamp tube at the correct lighting position, and is applicable to various fluorescent lamp stands.

In order to achieve the above object, the solution adopted in the present invention is: an LED fluorescent lamp, comprising a lamp tube, end caps at both ends of the lamp tube and terminals on the end caps, characterized in that the above-mentioned end caps include a main end cap and a secondary end cap, The main end cover is installed on the end of the lamp tube, the auxiliary end cover is installed on the main end cover, and the terminal is installed on the auxiliary end cover; the main end cover has a circular concave surface, and the auxiliary end cover is rotatably located on the circle relative to the main end cover. In the concave surface, the inner wall of the circular concave surface and the outer wall of the auxiliary end cap respectively have grooves and protrusions that hinder the relative rotation of the main end cap and the auxiliary end cap and have matching shapes; there are at least two grooves, and they are clamped according to a predetermined Angular arrangement; the position corresponding to the bump on the auxiliary end cover has a circular through hole; the central axis of the auxiliary end cover has a cylinder, and the outer wall of the cylinder has a stop block; the main end The central axis of the bottom of the circular concave surface on the cover has a circular through hole matching the above-mentioned cylinder, and the inner side of the circular through hole has an arc-shaped groove matching the above-mentioned stop block; There is an arc-shaped through hole at the corresponding position of one of the terminals.

Compared with the existing LED fluorescent lamp tube, the lamp tube of the present invention can adjust the angle of the terminals at both ends of the lamp tube relative to the lamp tube, and the terminals can be adjusted to a suitable angle for different fluorescent lamp frames, so it can be applied to A variety of light stands with different angles improve the applicability of the product and save unnecessary trouble.

Description of drawings

Fig. 1 is the outline schematic diagram of the present invention;

Figure 2 is a schematic exploded view of the structure of the terminal;

Fig. 3 is an exploded schematic view of the structure of another viewing angle of the terminal.

Detailed ways

The present invention is an LED fluorescent lamp. Referring to FIG. 1 , it includes a lamp tube 1 , an end cover 2 and a terminal 3 .

Referring to FIG. 2 , the end cap 2 includes a main end cap 21 and an auxiliary end cap 22 , the main end cap 21 is installed at the end of the lamp tube 1 , and the terminal 3 is fixedly installed on the auxiliary end cap 22 . A circular concave surface 211 is provided on the main end cover 21, and the secondary end cover 22 is placed in the circular concave surface 211. The size of the secondary end cover 22 matches the size of the circular concave surface 211. The end cap 21 rotates. Several grooves 212 are arranged on the inner wall of the circular concave surface 211, and a protrusion 222 is arranged on the outer wall of the auxiliary end cover 22, and the shape of the groove 212 matches the protrusion 222. 212 can hinder the relative rotation between the auxiliary end cover 22 and the main end cover 21 . Multiple grooves 212 can be provided, and the included angle between adjacent grooves 212 can be set according to predetermined requirements, so that all grooves 212 are arranged as required. A fan-shaped annular through hole 221 is arranged on the auxiliary end cover 22 corresponding to the protrusion 222. The outer wall of the fan-shaped annular through hole 221 can be deformed to a certain extent, so the protrusion 222 can be retracted to the center of the auxiliary end cover 22 by a certain distance.

Referring again to the main end cap 21 in Fig. 2 and Fig. 3, a circular through hole 213 and an arc-shaped through-hole 215 are arranged at the center of the bottom of the circular concave surface 211, and a section of arc-shaped groove 214 is provided inside the circular through-hole 213, referring to Fig. 3, the auxiliary end cover 22 has a cylinder 223 at its central axis, and a stop block 224 is arranged on the outer wall of the cylinder 223 . The arc groove 214 is matched with the stop block 224. The arc groove 214 has a certain arc, and the stop block 224 can rotate within this arc range. One of the terminals 3 has a corresponding position. When the auxiliary end cap 22 is located in the circular concave surface 211, the end of the terminal 3 is inserted into the arc-shaped through hole 215, and can rotate along the arc-shaped through hole 215 within its arc, At the same time, the conductive wire can also pass through the arc-shaped through hole 215 .

After the LED fluorescent lamp is installed on the lamp stand, if the light emitting direction of the lamp tube 1 is inconsistent with the light emitting direction of the lamp stand, the angle adjustment of the end cover 2 on the lamp tube 1 can be performed. In order to adapt to various lamp holders, the cooperation between the main end cover 21 and the auxiliary end cover 22 is also set correspondingly. There are multiple grooves 212 on the main end cover 21, assuming that the angle of the first groove 212 is 0 degree, the second groove 212 can be set at a position of 30 degrees, and the third groove 212 can be It is set at a position of 45 degrees, the fourth groove 212 is set at a position of 60 degrees, and so on, and a plurality of grooves 212 are arranged according to a predetermined angle. The angles required by the most commonly used lamp holders are all in the range of 90 degrees, so the angle between the first groove 212 and the last groove 212 is 90 degrees. When adjusting the angle, the auxiliary end cover 22 is rotated relative to the main end cover 21 by means of a certain external force. Due to their size relationship, a small deformation will occur at the position of the protrusion 222, causing the protrusion 222 to shrink inward for a certain distance. This reduces rotational resistance and makes it easier to rotate to a suitable angle. The maximum angle of adjustment is 90 degrees, so correspondingly the radians of the above-mentioned arc-shaped groove 214 and arc-shaped through hole 215 are both set to 90 degrees, which can limit the rotation of the auxiliary end cover 22 from exceeding 90 degrees. This function is achieved by the stop block 224 and the arc-shaped groove 214. When the stop block 224 rotates in the arc-shaped groove 214, the maximum angle is 90 degrees. At the same time, the terminal 3 and the arc-shaped through hole 215 can also play such a role. After adjusting the angle between the light emitting direction of the lamp tube 1 and the two terminals 3 to a suitable position, the protrusion 222 is also engaged in a certain groove 212 at this time, blocking the connection between the secondary end cover 22 and the main end cover 21. relative rotation between them. When installing the lamp tube 1 to the lamp stand, the external force required to rotate the lamp tube 1 is very small, and the angle will not change.

The main end cover 21 and the auxiliary end cover 22 can be connected together by screws, and a threaded inner hole is opened on the central axis of the cylinder 223, and then a self-tapping screw is passed through the round through hole 213 on the main end cover 21, and screwed into the auxiliary end In the threaded inner hole on the cover 22, the diameter of the nut of the screw is greater than the diameter of the round through hole 213, so that the main end cap 21 and the secondary end cap 22 can be connected together. In addition, the end of the cylinder 223 can be designed as a hook, which can be caught on the bottom of the circular concave surface 211 on the main end cover 21, and the same purpose can also be achieved. When adjusting the angle, the two terminals 3 can be directly rotated to rotate the secondary end cap 22, or an adjustment hole or an adjustment slot can be provided on the secondary end cap 22, and the secondary end cap 22 can be rotated by means of other tools. These methods are known Common sense will not be described here.

The invention can be used on fluorescent lamp stands of various specifications, has strong applicability, and plays a role in promoting the popularization of LED lamps.

Claims (5)

1, a kind of LED fluorescent lamp comprises the end cap of fluorescent tube, lamp tube ends and the terminal on the end cap, it is characterized in that: above-mentioned end cap comprises main end cap and secondary end cap, and main end cap is installed on lamp tube end, and secondary end cap is installed on the main end cap, and terminal is installed on the secondary end cap; Have a circular concave on the main end cap, the main relatively end cap of secondary end cap rotatably is positioned at this circular concave, has respectively on above-mentioned circular concave inwall and the secondary end cap outer wall to hinder that main end cap is relative with secondary end cap to be rotated and groove and projection that shape is complementary.

2, LED fluorescent lamp according to claim 1 is characterized in that: described groove has two at least, and arranges by predetermined angle.

3, LED fluorescent lamp according to claim 1 is characterized in that: the position corresponding with projection has a fan annular through-hole on the described secondary end cap.

4, LED fluorescent lamp according to claim 3 is characterized in that: have a cylinder on the described secondary end cap central shaft, have a stop block on this cylinder outer wall; Circular concave bottom centre shaft position has a round tube hole that mates with above-mentioned cylinder on the described main end cap, and this round tube hole inboard has a deep-slotted chip breaker that is complementary with above-mentioned stop block.

5, LED fluorescent lamp according to claim 3 is characterized in that: described main end cap looping pit bottom has an arc-shaped through-hole with one of them terminal correspondence position on the secondary end cap.

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