WO2021218382A1

WO2021218382A1 - Led straight lamp

Info

Publication number: WO2021218382A1
Application number: PCT/CN2021/079332
Authority: WO
Inventors: 王广东; 王名斌; 陆健; 熊爱明
Original assignee: 嘉兴山蒲照明电器有限公司
Priority date: 2020-04-28
Filing date: 2021-03-05
Publication date: 2021-11-04
Also published as: CN215411443U

Abstract

Provided is an LED straight lamp. The LED straight lamp comprises: a lamp tube (1); two sets of lamp panels (2) arranged in the lamp tube (1), the lamp panels (2) being provided with a plurality of light sources (21); and two lamp holders (3) respectively arranged at two ends of the lamp tube (1), the lamp holders (3) being provided with hollow conductive pins (4) used for being connected to an external power supply. Each lamp holder (3) comprises a first component (31), a second component (32) and a positioning unit (34), with a first rotating component (3112) being arranged on the first component (31), a second rotating component (3212) being arranged on the second component (32), and the first rotating component (3112) matching the second rotating component (3212); and the positioning unit (34) comprises a first positioning unit (341) and a second positioning unit (342), wherein the first positioning unit (341) is arranged on the first component (31), the second positioning unit (342) is arranged on the second component (32), and the first positioning unit (341) and the second positioning unit (342) fit to make the relative positions of the first component (31) and the second component (32) fixed.

Description

A kind of LED straight tube lamp

Technical field

The utility model belongs to the technical field of LED lighting devices, and specifically relates to an LED straight tube lamp.

Background technique

LED lighting is widely used because of its advantages of energy saving and long life. Among them, the LED fluorescent lamp, commonly known as the straight tube lamp, generally includes a lamp tube, a lamp board with a light source arranged in the lamp tube, and a lamp holder arranged at both ends of the lamp tube. Board electrical connection. Among them, the light source is a plurality of LED straight tube lamps arranged on the lamp panel, and the plurality of LED straight tube lamps are arranged in sequence along the length direction of the lamp tube.

The LED straight tube lamp in the prior art usually includes a lamp tube, a lamp cap, a lamp board, a hollow conductive pin, and a power supply. The lamp cap is fixed to the lamp tube, and the power supply is provided in the lamp cap and is electrically and electrically connected to the lamp board. The needle is fixed on the end surface of the lamp cap and used to connect with the external lamp holder, and the lamp board is glued and fixed on the inner peripheral surface of the lamp tube. The LED straight tube lamp in the prior art has the following disadvantages:

1. The lamp plate is glued and fixed in the lamp tube, and the lamp cap is fixed to the lamp tube. At this time, the position of the lamp plate and the hollow conductive needle is relatively fixed. When the lamp cap is fixed to the lamp holder, the light emitting direction of the straight tube lamp is also fixed. of. If the position of any one of the lamp holder, lamp cap, and lamp board has a deviation, it will affect the light emitting direction of the straight tube lamp.

2. After the lamp board is glued into the lamp tube, the straight tube lamp can only emit light in one direction. Therefore, when the above-mentioned straight tube lamp is applied to some special occasions (such as the occasion where both sides of the advertising box need to emit light), two sets of straight tube lamps must be set to correspond to the two sides of the advertising box respectively to achieve double The method of arranging two sets of straight tube lamps to emit light from the surface will increase the cost on the one hand, and will take up more horizontal space on the other hand.

In summary, in view of the shortcomings and defects of the existing LED straight tube lamp, how to design the LED straight tube lamp to solve the light emission problem of the straight tube lamp is a technical problem that urgently needs to be solved by those skilled in the art.

Utility model content

This summary describes many embodiments of the present utility model. However, the vocabulary of this utility model is only used to describe certain embodiments disclosed in this specification (regardless of whether they are in the claims), rather than a complete description of all possible embodiments. Some of the embodiments described above as various features or aspects of the present invention can be combined in different ways to form an LED straight tube lamp or a part thereof.

The embodiment of the present invention provides a new LED straight tube lamp and various features to solve the above-mentioned problems.

The embodiment of the utility model provides an LED straight tube lamp, which includes:

Lamp

Two sets of light panels are arranged in the lamp tube, and the light panels are provided with a number of light sources; and

Two lamp caps, which are respectively arranged at both ends of the lamp tube, and hollow conductive pins for connecting to an external power supply are provided on the lamp caps;

The lamp cap includes a first member, a second member, and a positioning unit. The first member is provided with a first rotating member, the second member is provided with a second rotating member, and the first rotating member is connected to the second member. Rotating component matching;

The positioning unit includes a first positioning unit and a second positioning unit, wherein the first positioning unit is disposed on the first member, the second positioning unit is disposed on the second member, and the first positioning unit is disposed on the second member. A positioning unit cooperates with the second positioning unit to fix the relative positions of the first member and the second member.

The second positioning unit according to the embodiment of the present invention includes a number of continuous or discontinuous positioning positions. When the first positioning unit matches the positioning position, it limits the gap between the first member and the second member. Relative rotation.

In the embodiment of the present invention, a plurality of the positioning positions are evenly distributed along the circumferential direction of the second member, and the angle formed between the adjacent positioning positions is 5 to 15 degrees.

According to the embodiment of the present invention, the second positioning unit includes a plurality of teeth, and the positioning positions are formed between adjacent teeth. The first positioning unit includes positioning protrusions, and the positioning protrusions are locked in Position the location.

The second member according to the embodiment of the present invention is provided with a stopper, and the stopper is configured to restrict the rotation of the first member relative to the second member within a certain range.

The stopper in the embodiment of the present invention is configured to limit the rotation range of the first member relative to the second member to within 200 degrees.

The stopper in the embodiment of the present invention is configured to limit the rotation range of the first member relative to the second member to within 180 degrees.

According to the embodiment of the present invention, the stop portion is configured to limit the rotation range of the first member relative to the second member to within 90 degrees.

In the embodiment of the present invention, the stop part matches with the first positioning unit and forms a limit for the first positioning unit.

In the embodiment of the utility model, the stopper portions are provided in two groups, and the two sets of stopper portions are respectively located on opposite sides of the second positioning unit in the circumferential direction of the second member.

The first member of the embodiment of the present invention includes a first side wall and an end wall, wherein the hollow conductive needle is disposed on the end wall, the second member includes a second side wall, and the first rotating The member is an annular protrusion provided on the first side wall, and the second rotating member is an annular groove provided on the second side wall.

The embodiment of the present invention further includes a power supply. The lamp tube has a light-transmissive area and a light-impermeable area in its axial direction. A part of the length of the power supply is arranged in the light-impermeable area. The other part in the length direction of the power supply is arranged in the light-transmitting area.

At least 50%, 60%, 70%, 80%, or 85% of the length of the power supply in the embodiment of the present invention is located in the light-transmitting area.

The light-transmitting area of the lamp tube according to the embodiment of the present invention includes a first area and a second area, wherein the first area is the light-transmitting area corresponding to the power source position on the axial length of the lamp tube The second area is the portion of the light-transmitting area that does not correspond to the position of the power source in the axial length of the lamp tube, the light board extends to at least the first area, and the light The light source is arranged in the part of the board located in the first area, and the two groups of the light boards are arranged oppositely in the lamp tube, so that the light sources of the two groups of the light boards are arranged oppositely.

When the LED straight tube lamp of the embodiment of the present invention is lit, the ratio of the average illuminance of the first area surface of the lamp tube to the average illuminance of the second area surface of the lamp tube is greater than 0.4, 0.5, 0.6, 0.7 , 0.8 or 0.9, and less than 1.5.

When the LED straight tube lamp of the embodiment of the present invention is lit, the ratio of the average illuminance of the surface of the first area of the lamp tube to the average illuminance of the surface of the second area of the lamp tube is greater than 0.5 but less than 1.

When the LED straight tube lamp of the embodiment of the present invention is lit, the ratio of the average illuminance of the surface of the first region of the tube to the average illuminance of the surface of the second region of the tube is greater than 0.6 but less than 0.9.

When the LED straight tube lamp of the embodiment of the present invention is lit, the ratio of the average illuminance of the surface of the first region of the tube to the average illuminance of the surface of the second region of the tube is greater than 0.7 but less than 0.9.

The arrangement density of the light sources in the first area of the embodiment of the present invention is greater than the arrangement density of the light sources in the second area.

At least 30%, 40%, 50%, 60%, or 70% of the total luminous flux generated by the light source in the first region of the embodiment of the present invention is derived from the surface of the first region of the lamp tube Projected.

The embodiment of the present invention further includes an optical member, the optical member is configured in a tube shape, at least a part of the power source is located in the optical member, and the surface of the optical member is configured with a reflection function.

The part of the power supply in the light-transmitting area in the length direction of the lamp tube in the embodiment of the present invention is all arranged inside the optical member.

In the embodiment of the present invention, at least 25% of the luminous flux generated by the light source located in the first area is directly emitted from the first area.

According to the embodiment of the present invention, the light source has a direct light output at the light output area of the first area corresponding to the projection area of the optical member, wherein the light output area is not the light plate at the first area. The shielded part, and the projection area is the area occupied by the optical member after being projected laterally to the light emitting area.

In the embodiment of the present invention, at least 30%, 40% or 50% of the total luminous flux emitted from the first area is emitted from the projection area.

In the embodiment of the present invention, in the width direction of the lamp tube, at least 35%, 40%, 50%, or more than 60% of the outer surface of the optical member receives the direct light from the light source.

The outer diameter of the lamp tube in the embodiment of the utility model is 24 to 32 mm, and the diameter of the optical component is 14 to 18 mm.

The ratio of the shortest distance from the plane where the light source is located to the surface of the optical member to the outer diameter of the optical member in the embodiment of the present invention is greater than 0.2, 0.25, 0.3 or 0.4, and less than 0.6 or 0.5.

The embodiment of the utility model also provides an LED straight tube lamp, which includes:

Lamp

Two sets of light panels are arranged in the lamp tube, and the light panels are provided with a number of light sources;

Two lamp caps, which are respectively arranged at two ends of the lamp tube, and hollow conductive pins for connecting to an external power source are provided on the lamp caps; and

A supporting unit, which is arranged inside the lamp tube, the supporting unit has a supporting part, and is supported on the inner surface of the lamp tube through the supporting part, and two sets of the lamp panels are installed on the supporting unit ；

The lamp cap includes a first member, a second member and a positioning unit, and the first member and the second member are rotatably connected;

The heat resistance or rigidity of the lamp tube in the embodiment of the utility model is better than that of the supporting unit.

According to the embodiment of the present invention, the supporting part has two groups, and the cross-sectional shape of the supporting part is set in a circular arc shape to form a supporting surface, and the sum of the central angles of the supporting surfaces of the two groups is greater than 100 degrees.

In the embodiment of the present invention, the sum of the central angles of the two groups of supporting surfaces is less than 135 degrees.

According to an embodiment of the present invention, the two groups of the light boards are arranged in parallel in the lamp tube, and the light sources of the two groups of the light boards are arranged on the opposite surfaces of the two groups of the light boards.

The supporting unit according to the embodiment of the present invention is equipped with an installation unit for installing the light board, the installation unit is provided with a card slot, and both sides of the light board are locked into the card slot.

The thermal conductivity of the supporting unit in the embodiment of the present invention is smaller than the thermal conductivity of the light board, and the surface area of the supporting unit is larger than the surface area of the light board.

The embodiment of the present invention further includes a power source, the supporting unit is provided with an accommodating space, and the power source is provided in the accommodating space.

The ratio of the width of the accommodating space to the diameter of the inner surface of the lamp tube is at least greater than 0.3, 0.32 or 0.35, and less than 0.5, 0.45 or 0.4.

The light source described in the embodiment of the utility model is correspondingly provided with a lens.

At least a part of the first member according to the embodiment of the present invention is inserted into the lamp tube and connected with the lamp tube, and the end surface of the second member is provided with the hollow conductive needle.

At least 80%, 85%, 90%, or 95% of the length of the second member in the axial direction of the lamp tube in the embodiment of the present invention is located inside the first member.

In the embodiment of the present invention, the second member is all located inside the first member in the axial direction of the lamp tube.

According to the embodiment of the present invention, the first member is provided with a limiting portion, and the limiting portion is matched with the end of the lamp tube.

The length of the portion of the first member located outside the axial direction of the lamp in the embodiment of the present invention accounts for no more than 30% of the total length of the first member.

An embodiment of the present invention: the length of the part of the first member located outside the axial direction of the lamp tube accounts for no more than 20% of the total length of the first member.

In the embodiment of the present invention, the number or density of the light sources provided per unit length at both ends of the lamp tube is greater than the number or density of the light sources provided per unit length of other parts of the lamp tube.

According to the embodiment of the present invention, the first member and the second member are connected by a coupling structure, and the coupling structure includes an annular groove and a guide protrusion, one of the guide protrusion and the annular groove It is provided on the first member, and the other is provided on the second member.

The combination structure of the embodiment of the utility model and the part of the first member for connecting the lamp tube at least partially overlap in the radial direction of the lamp tube.

An embodiment of the present invention: the first member is sleeved on the outside of the second member, the guide protrusion is provided on the outer surface of the second member, and the annular groove is provided on the first member. The inner surface of the component.

The first positioning unit according to the embodiment of the present invention includes a number of continuous or discontinuous positioning positions. When the second positioning unit matches the positioning position, it restricts the gap between the first member and the second member. Relative rotation.

According to the embodiment of the present invention, several positioning positions are evenly distributed along the circumferential direction of the first member, and the angle formed between adjacent positioning positions is 5 to 15 degrees.

According to the embodiment of the present invention, the first positioning unit includes a plurality of teeth, the positioning positions are formed between adjacent teeth, and the second positioning unit includes positioning protrusions, and the positioning protrusions are locked in Position the location.

According to the embodiment of the present invention, a stop portion is provided on the first member, and the stop portion is configured to restrict the rotation of the second member relative to the first member within a certain range.

The stopper in the embodiment of the present invention is configured to limit the rotation range of the second member relative to the first member to within 240 degrees.

According to the embodiment of the present invention, the stopping parts are arranged in two groups, and the second positioning unit is restricted to rotate between the two stopping parts.

The first positioning unit according to the embodiment of the present invention includes a main body portion, the tooth portion and the stop portion are both provided on the main body portion, and the main body portion includes a first member connected to the inner surface of the first member. In the circumferential direction of the first member, a portion and a second portion not connected to the inner surface of the first member have a smaller proportion of the first portion than that of the second portion.

A plastic film is arranged outside the lamp tube according to the embodiment of the utility model.

The plastic film in the embodiment of the utility model extends to the lamp cap and covers at least part of the lamp cap.

The beneficial effect of the utility model is: compared with the prior art, the utility model includes any of the following effects or any combination thereof:

(1) The first member and the second member are rotatably connected. Therefore, the positional relationship between the first member and the lamp tube (light plate) can be adjusted, that is, the hollow conductive pin on the first member is mounted on the lamp When the lamp holder is fixed, the direction of the lamp tube (lamp board) can be adjusted by rotating the second member, thereby adjusting the light emitting direction of the light source. From another perspective, after the lamp tube is fixed (the direction of light emission is determined), if the hollow conductive needle is not aligned with the lamp holder, the first member can be rotated to align the hollow conductive needle with the lamp holder to facilitate the installation .

(2) Through the cooperation of the first positioning unit and the second positioning unit, the relative fixation of the first member and the second member can be realized, and the relative position of the first member and the second member can be prevented from changing due to external force, thereby affecting the light emission Direction.

(3) The second positioning unit includes a plurality of teeth, and the positioning position is formed between adjacent teeth. The first positioning unit includes a positioning protrusion, and the positioning protrusion can be clamped at the positioning position to complete positioning. The above positioning method has simple structure, convenient assembly and high positioning reliability.

(4) The stopper is configured to limit the excessive rotation of the first member relative to the second member, so as to prevent the inner wire from being pulled off.

(5) A part of the length of the power supply is arranged in the opaque area, and the other part of the length of the power supply is arranged in the light-transmitting area. Compared with completely arranging the power supply in the lamp cap, the above arrangement can be reduced The lamp holder sets the length required by the power supply. When the overall size of the LED straight tube lamp is the same, the length of the light-transmitting area can be increased, and the ratio of the length of the light-transmitting area to the length of the LED straight tube lamp is increased.

(6) The light board extends to at least the first area, and a light source is provided in the portion of the light board located in the first area so that the first area can emit light, and at least a part of the light is provided by the light source in the first area. This prevents the formation of dark areas in the first area.

(7) The ratio of the average illuminance on the surface of the first area of the tube to the average illuminance on the surface of the second area of the tube is greater than 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, but less than 1.5, which can control the uniform light output of the LED straight tube lamp sex.

(8) The setting density of the light source in the first area is greater than the setting density of the light source in the second area. In the case where the light loss in the first area is greater than that in the second area (the light in the first area is partially absorbed by the power supply lamp component), it can be Control the light uniformity of the LED straight tube lamp.

(9) Through the installation of optical components, on the one hand, it can be used to place the power supply and can fix the power supply to a certain extent. On the other hand, it can reduce the absorption of light by the power supply, thereby increasing the light output rate and reducing the first The difference in illuminance between one area and the second area. Through the arrangement of optical components, the light output of the light source in the first area can be increased. When the light output rate of the light source in the first area (the ratio of the luminous flux emitted from the first area to the luminous flux generated by the light source) reaches a certain value (for example, 30 %, 40%, 50%, 60%, 70% or 80%), when the LED straight tube lamp is lit, the presence of optical components will be reduced visually, that is, when viewed from the outside, it will be invisible or almost No optical components are visible.

(10) At least part of the light generated by the light source is directly emitted from the first area (without reflection by the optical member), thereby reducing light loss caused by reflection by the optical member.

(11) In the width direction of the lamp tube, at least 35%, 40%, 50%, or 60% of the surface of the optical component receives direct light from the light source, so that more area on the surface of the optical component is illuminated to reduce Dark areas on the surface of small optical components.

(12) The heat resistance or rigidity of the lamp tube is better than that of the support unit, which can limit the deformation of the support unit.

(13) The sum of the central angles of the two supporting surfaces is greater than 100 degrees and less than 135 degrees. Under the premise of providing sufficient support, the light shielding of the support surface can be controlled to ensure the light emitting angle of the lamp tube.

(14) The ratio of the width of the accommodating space to the diameter of the inner surface of the lamp tube is at least greater than 0.3, 0.32, or 0.35, and less than 0.5, 0.45, or 0.4 to meet the space required for light source installation and light emission.

(15) Placing all or most of the power supply in the accommodating space of the supporting unit can reduce the size required at the end. Under the condition that the total length remains the same, the length of the LED straight tube lamp that can emit light can be increased to increase Lighting effect.

(16) By setting the lens, the light emitted by the light source can be diffused, so that the light source is in a smaller space (due to the setting of the accommodating space, the size of the light source installation space in the direction perpendicular to the light board It only accounts for 20% to 35% of the diameter of the inner surface of the lamp tube), which has a larger light exit angle.

(17) At least a part of the first member is inserted into the lamp tube, and a limiting portion is provided on the first member, and the limiting portion is matched with the end of the lamp tube to limit the depth of the first member inserted into the lamp tube a1. The length of the portion of the first member located outside the axial direction of the lamp tube accounts for no more than 30% of the total length of the first member. In this way, the exposed size of the lamp cap can be reduced, and the length of the non-luminous area in the length direction of the LED straight tube lamp can be reduced. The outer surface of the lamp tube is not covered with obstructions (the lamp cap is in the form of an inner plug and will not cover the outer surface of the lamp tube). Therefore, in the axial direction of the lamp tube, light is emitted from the outer surface, so the LED straight tube lamp The length of the dark areas at both ends is reduced.

(18) The part of the connecting member and the first member for connecting the lamp tube at least partially overlaps in the radial direction of the lamp tube, so that the arrangement of the first member and the second member in the axial direction of the lamp tube is more reasonable. The end is connected to the lamp tube, and the length required to complete the rotatable mechanism is reduced, thereby controlling the length of the entire end.

Description of the drawings

Figure 1 is a perspective view of an LED straight tube lamp in an embodiment of the utility model;

Figure 2 is a cross-sectional view of the LED straight tube lamp in an embodiment of the utility model;

Fig. 3 is an enlarged schematic diagram of A in Fig. 2;

Figure 4 is a first perspective schematic view of the first member;

Figure 5 is a schematic diagram of the cooperation between the annular groove and the annular protrusion in other embodiments;

Figure 6 is a second perspective view of the first member;

Figure 7 is a schematic diagram of the cooperation between the first component and the power supply circuit board;

Figure 8 is a schematic diagram of the cooperation between the light board and the supporting unit;

Figure 9 is a first perspective view of the supporting unit;

Figure 10 is a second perspective view of the supporting unit;

Figure 11 is a schematic diagram of the cooperation between the supporting unit and the lamp tube;

Figure 12 is a schematic diagram of the cooperation between the light board and the light tube;

Figure 13 is a perspective schematic view of a second member;

14 is a schematic diagram of the connection between the power supply circuit board and the light board of this embodiment;

Fig. 15 is a schematic diagram of the connection between the power supply circuit board and the light board in the prior art.

Fig. 16 is a schematic diagram of the lens provided on the light board;

Figure 17 is a schematic cross-sectional view of Figure 16;

18 is a schematic diagram of the cooperation of the lens and the light board in other embodiments;

Figure 19 is a schematic partial cross-sectional view of Figure 18;

20 is a schematic diagram of the arrangement of lenses;

Figure 21 is a second schematic diagram of the arrangement of lenses;

FIG. 22 is a schematic diagram of the cooperation between the lens and the light board in another embodiment;

Figure 23 is a schematic diagram of the cooperation between the mold and the light board.

Fig. 24 is a cross-sectional view of an LED straight tube lamp in an embodiment.

Fig. 25 is a schematic diagram of the light distribution on the lamp tube of Fig. 24.

Figure 26 is a cross-sectional view of an LED straight tube lamp in some embodiments.

Fig. 27 is a cross-sectional view of an LED straight tube lamp in a preferred embodiment.

Figure 28 is a cross-sectional view of an LED straight tube lamp in some embodiments.

Fig. 29 is a schematic cross-sectional view of an LED straight tube lamp in another embodiment.

Fig. 30 is a light distribution diagram of the LED straight tube lamp of Fig. 27.

Fig. 31 is a partial schematic diagram of an LED straight tube lamp in an embodiment.

Fig. 32 is a schematic diagram 1 of a three-dimensional structure of a lamp cap in an embodiment.

Fig. 33 is a second schematic diagram of the three-dimensional structure of the lamp cap in an embodiment.

Fig. 34 is a schematic cross-sectional view of a lamp cap in an embodiment.

Fig. 35 is an enlarged schematic view of B in Fig. 34.

Fig. 36 is a three-dimensional structural diagram of the first member in an embodiment.

Fig. 37 is a schematic diagram of a three-dimensional structure of a second member in an embodiment.

Fig. 38 is a schematic front view of the structure of the second member in an embodiment.

Fig. 39 is a three-dimensional structure diagram of an LED straight tube in an embodiment.

40 is a cross-sectional view 1 of the LED straight tube lamp in an embodiment, showing a cross section in the length direction of the LED straight tube lamp.

FIG. 41 is an enlarged schematic diagram of C in FIG. 40.

42 is a second cross-sectional view of the LED straight tube lamp in an embodiment, showing a cross-sectional view in the width direction of the LED straight tube lamp.

Fig. 43 is a third cross-sectional view of the LED straight tube lamp in an embodiment, showing a cross-sectional view in the width direction of the LED straight tube lamp.

Fig. 44 is a schematic diagram of a three-dimensional structure of an LED straight tube lamp in an embodiment.

Fig. 45 is an enlarged view of D in Fig. 44.

Fig. 46 is a schematic cross-sectional structure diagram of an LED straight tube lamp in an embodiment, showing a longitudinal cross-section of the LED straight tube lamp.

Fig. 47 is an enlarged view of E in Fig. 46.

Fig. 48 is a schematic cross-sectional structure diagram of an LED straight tube lamp in an embodiment, realizing a transverse cross-section of the LED straight tube lamp.

Fig. 49 is an enlarged view of F in Fig. 47.

Fig. 50 is a schematic diagram of the three-dimensional structure of the end portion.

Fig. 51 is a schematic view of the front structure of the end.

Fig. 52 is a schematic view of the three-dimensional structure of the end.

Fig. 53 is a schematic view of the three-dimensional structure of the second member.

Fig. 54 is a schematic diagram of the three-dimensional structure of the first member.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be described in a more comprehensive manner with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. The following directions, such as "axial direction", "above", "below", etc., are used to more clearly indicate the structural position relationship, and are not a limitation of the present invention. In the present utility model, the "vertical", "horizontal" and "parallel" are defined as: including ±10% on the basis of the standard definition. For example, vertical generally refers to the angle of 90 degrees relative to the reference line, but in the present invention, vertical refers to the situation including 80 degrees to 100 degrees.

As shown in Figures 1 and 2, this embodiment provides an LED straight tube lamp. The LED straight tube lamp includes: a lamp tube 1, a lamp plate 2 arranged in the lamp tube 1, and a lamp plate 2 respectively arranged in the lamp tube 1. There are two lamp holders 3 at both ends, and hollow conductive pins 4 for connecting to an external power supply are provided on the lamp holder 3. The lamp tube 1 may be a plastic lamp tube or a glass lamp tube, and the sizes of the two lamp caps 3 (the axial length of the lamp caps 3) are the same or different. Several light sources 21 are provided on the light board 2 in this embodiment. The lamp holder 3 is provided with a power supply 5 (at least part of the projection of the power supply 5 in the radial direction of the LED tube lamp overlaps the lamp holder 3), and the power supply 5 and the light source 21 are electrically connected through the lamp board 2. Preferably, the power supply in this embodiment 5 The length in the direction in which the length of the lamp tube 1 extends is not greater than the length of the lamp cap 3, so that the power source 5 is completely contained in the lamp cap 3. The power supply 5 may be a single unit as a whole (for example, the power supply modules are all concentrated in one component and are arranged in one of the lamp holders 3). Or the power supply 5 can also be divided into two parts, called dual individual (that is, all the power supply modules are respectively arranged in two parts), and the two parts are respectively arranged in the lamp caps 3 at both ends of the lamp tube 1. In this embodiment, the power supply 5 includes a power supply circuit board 51 carrying a power supply module, and the power supply 5 and the hollow conductive pin 4 are connected by wires.

As shown in FIGS. 1 to 3, the lamp cap 3 in this embodiment includes a first member 31, a second member 32 and a coupling structure 33, and the first member 31 and the second member 32 are connected to each other by the coupling structure 33. The second member 32 is connected to the lamp tube 1. The first member 31 includes a first side wall 311 and an end wall 312, wherein the hollow conductive needle 4 is provided on the end wall 312, and the second member 32 includes a second side wall 321, a first side wall 311 and a second side wall 321 They are coaxially arranged, and the first side wall 311 and the second side wall 321 are sleeved, and a rotatable connection is realized by the coupling structure 33. The coupling structure 33 includes a guide protrusion 331 and a guide groove 332. One of the guide protrusion 331 and the wire groove 332 is provided on the first member 31, and the other is provided on the second member 32, and the guide protrusion 331 Both the guide groove 332 and the guide groove 332 extend along the circumferential direction of the lamp cap 3, and after the guide protrusion 331 and the guide groove 332 cooperate with each other, the guide protrusion 331 can rotate along the guide groove 332. In this embodiment, the second member 32 is sleeved on the outside of the first member 31, the guide protrusion 331 is provided on the inner peripheral surface of the second side wall 321, and the guide groove 332 is provided on the outer peripheral surface of the first side wall. In the example, when the second member 32 is sleeved on the first member 31, the guide protrusion 331 is buckled into the guide groove 332. At this time, the second member and the first member 31 are realized along a fixed circumferential direction through the combination structure 33. Rotation. In this embodiment, the guide protrusion 331 can also be provided on the outer peripheral surface of the first side wall 311, and the guide groove 332 can be provided on the inner peripheral surface of the second side wall 321 (not shown) to achieve the above Function (not shown). In this embodiment, the first member 31 and the second member 32 are rotatably connected. Therefore, the positional relationship between the first member 31 and the lamp tube 1 (light plate 2) can be adjusted, that is, the first member 31 When the upper hollow conductive pin 4 is installed in the lamp holder (the lamp holder is fixed), the direction of the lamp tube 1 (lamp plate 2) can be adjusted by rotating the second member 32, thereby adjusting the light emitting direction of the light source 21. From another perspective, after the lamp tube 1 is fixed (the light emitting direction is determined), if the hollow conductive pin 4 is not aligned with the lamp holder, the first member 31 can be rotated to align the hollow conductive pin 4 with the lamp holder. In order to complete the installation.

Please refer to FIGS. 4 and 5 at the same time. In this embodiment, in order to facilitate the insertion of the first member 31 into the second member 32, the axial end of the first side wall 311 of the first member 31 (close to the second member 32) One end) is provided with a plurality of grooves 3111, and the plurality of grooves 3111 are distributed along the circumference of the first side wall 311, so that one end of the first side wall 311 has more deformable space, and the damage of one end of the first side wall 311 is damaged. The structural strength is more conducive to the insertion of the first side wall 311 into the second member 32 so that the guiding protrusion 331 and the guiding groove 332 are matched.

In other embodiments, the first member 31 may also be sleeved outside the second member 32 (not shown). At this time, one of the guiding protrusion 331 or the guiding groove 321 may be provided on the second side wall 321 The outer circumferential surface, and the other of the guiding protrusion 331 or the guiding groove 321 is provided on the inner circumferential surface of the first side wall 311, so as to realize the function of rotating the first member 31 and the second member 32.

In this embodiment, the guide groove 332 surrounds the outer circumferential surface of the first member 31 in a ring shape, that is, without external restriction, after the guide protrusion 331 and the guide groove 332 are matched, there can be unlimited Rotation, that is, the angle of rotation is not restricted, and the relative positions of the first member 31 and the second member 32 can be adjusted freely. The guiding protrusion 331 in this embodiment may be an integral ring shape or a split type, that is, it is composed of multiple parts (multiple parts on the same circumference). In other embodiments, when the guide groove 332 extends in the circumferential direction, its corresponding center angle is less than 360 degrees. That is, after the guide protrusion 331 is buckled into the guide groove 332, the relative rotation angle of the guide groove 332 is affected by the guide groove 332. To prevent the wire between the hollow conductive pin 4 and the power supply 5, or the connection structure (such as a wire) between the power supply 5 and the light board 2 from being pulled off when the rotation angle is too large. In other embodiments, there may be multiple guide grooves 332 (such as 2, 3, or 4) on the circumference, and the guide protrusions 331 are correspondingly provided with multiple guide grooves 332 to match the guide grooves 332. Specifically, it can be selected according to the rotation angle that needs to be restricted, as shown in FIG. 5, which is a schematic diagram of cooperation when two guiding protrusions 331 are provided.

As shown in Figures 2, 6 and 7, the power supply 5 in this embodiment includes a power circuit board 51, which is relatively closer to the radially inner side of the first member 31 and the second member 32. One to cooperate. Specifically, the inner peripheral surface of the first member 31 in this embodiment is provided with a card slot 301, and the power supply circuit board 51 is inserted into the card slot 301 to be fixed. In other embodiments, when the second member 32 is located relatively far inside, the inner peripheral surface of the second member 32 is provided with a slot 301 (not shown) to fix the power circuit board 51.

In this embodiment, the card slot 301 includes a first rib 302, and the first rib 302 may be continuous and integrated in the axial direction of the lamp cap 3, or may be multi-segmented. The first rib 302 and the inner peripheral surface of the first side wall 311 form a card slot 301, and the power supply circuit board 51 is inserted into the card slot 301 to be fixed. Specifically, the power circuit board 51 has a first surface 511 and a second surface 512 that are opposite and parallel to each other, and the first surface 511 and the second surface 512 are substantially parallel to the axial direction of the lamp cap 3. When the power circuit board 51 is inserted into the card slot 301 and fixed, the first surface 511 of the power circuit board 51 corresponds to the surface on the side of the first rib 302, and the second surface 512 of the power circuit board 51 corresponds to the surface of the first side wall 311. Inner peripheral surface. Preferably, the first surface 511 of the power circuit board 51 abuts against the first rib 302, and the edge of the second surface 512 of the power circuit board 51 can abut against the inner circumferential surface of the first side wall 311 (or keep a certain In order to reduce the difficulty of inserting the power circuit 51 into the card slot 301), so that the power circuit board 51 can be fixed. In actual use, the first ribs 33 are used in pairs, that is, a slot 301 is formed on both sides of the lamp holder 3 to fix the two sides of the power circuit board 51. Preferably, the inner peripheral surface of the first side wall 311 is provided with a groove 303 which extends along the axial direction of the lamp cap 3, and the groove 303 has a limit surface 3031 which is connected to the first The said slot 301 is formed between the ribs 302 to make the fixing of the slot 301 and the power circuit board 51 more stable. In other embodiments, if the second member 32 is provided on the inner side of the first member 31, the locking groove 301 may be provided on the inner peripheral surface of the second member 32.

As shown in FIGS. 1, 32 to 38, in an embodiment, a lamp cap 3 is provided, which can be applied to the LED straight tube lamp in the foregoing embodiment. In this embodiment, the basic structure of the lamp cap 3 shown is the same as that of the previous embodiment. For example, the lamp cap 3 includes a first member 31, a second member 32, and the first member 31 and the second member 32 are rotatably connected and connected. For example, the inner peripheral surface of the second member 32 of the lamp cap 3 is provided with a card slot 301 and the like. The second member 32 is connected to the lamp tube 1. The first member 31 includes a first side wall 311 and an end wall 312, wherein the hollow conductive needle 4 is provided on the end wall 312, and the second member 32 includes a second side wall 321, a first side wall 311 and a second side wall 321 They are coaxially arranged, and the first side wall 311 and the second side wall 321 are sleeved to achieve a rotatable connection. In this embodiment, the first member 31 and the second member 32 are rotatably connected. Therefore, the positional relationship between the first member 31 and the lamp tube 1 (light plate 2) can be adjusted, that is, the first member 31 When the upper hollow conductive pin 4 is installed in the lamp holder (the lamp holder is fixed), the direction of the lamp tube 1 (lamp plate 2) can be adjusted by rotating the second member 32, thereby adjusting the light emitting direction of the light source 21. From another perspective, after the lamp tube 1 is fixed (the light emitting direction is determined), if the hollow conductive pin 4 is not aligned with the lamp holder, the first member 31 can be rotated to align the hollow conductive pin 4 with the lamp holder. In order to complete the installation.

In this embodiment, a first rotating member 3112 is provided on the first side wall 311 of the first member 31, and a second rotating member 3212 is provided on the second side wall 321 of the second member 32. The matching of the second rotating member 3212, on the one hand, allows the first member 31 and the second member 32 to rotate relative to each other on a fixed circle, and on the other hand, prevents the first member 31 and the second member 32 from loosening in the axial direction. Take off. In this embodiment, the second rotating member 3212 is an annular groove, which extends along the circumferential direction of the second side wall 321 and is arranged on the outer peripheral surface of the second side wall 321; the first rotating member 3112 is An annular convex portion extending along the circumferential direction of the first side wall 311 and disposed on the inner circumferential surface of the first side wall 311. In other embodiments, the first rotating member 3212 may be an annular protrusion, and the second rotating member 3212 may be an annular groove (not shown) matching the annular protrusion. In addition, the first rotating member 3112 may be disposed on the outer circumferential surface of the first side wall 311, and the second rotating member 3212 may be disposed on the inner circumferential surface of the second side wall 321 (not shown).

In this embodiment, when the first rotating member 3112 is an annular convex portion, a guide portion 31121 is provided on one side of the first rotating member 3112 to facilitate the first rotating member 3112 to lock into the second rotating member 3212.

The lamp cap 3 in this embodiment further includes a positioning unit 34, and the position or angle of the first member 31 and the second member 32 when the first member 31 and the second member 32 rotate relative to each other is positioned by the positioning unit 34. The positioning unit 34 includes a first positioning unit 341 and a second positioning unit 342. The first positioning unit 341 and the second positioning unit 342 cooperate to realize the positioning of the first member 31 and the second member 32, wherein the first positioning unit 341 It is arranged on the first member 31, and the second positioning unit 342 is arranged on the second member 32. In other embodiments, the first positioning unit 341 can also be disposed on the second member 32, and the second positioning unit 342 is disposed on the first member 31. Through the cooperation of the first positioning unit 341 and the second positioning unit 342, the relative fixation of the first member 31 and the second member 32 can be realized, and the relative position of the first member 31 and the second member 32 can be prevented from being changed due to external force. Thereby affecting the direction of the light.

In this embodiment, the second positioning unit 342 includes a number of continuous or discontinuous positioning positions. When the first positioning unit 341 matches the positioning positions, the relative rotation of the first member 31 and the second member 32 is restricted. Several positioning positions are evenly distributed along the circumferential direction of the second member 32, and the rotation angle between adjacent positioning positions is 5-15 degrees. That is to say, when the first positioning unit 341 rotates to a position matching with a positioning position to a position matching with another adjacent positioning position, the rotation angle of the first member 31 relative to the second member 32 is 5-15 degrees. In an embodiment, the rotation angle between adjacent positioning positions is 10 degrees. In this embodiment, the second positioning unit 342 includes a plurality of teeth 3421, and the positioning positions are formed between adjacent teeth 3421 (a groove 3422 is formed between adjacent teeth 3421), and the first positioning unit 341 includes Positioning convex portion 3411, positioning convex portion 3411 can be clamped at the positioning position (groove portion 3422), thereby completing positioning. The above positioning method has simple structure, convenient assembly and high positioning reliability.

In this embodiment, the second member 32 is provided with a stopper 35, and the stopper 35 is configured to limit the excessive rotation of the first member 31 relative to the second member 32 (only allow rotation within a certain range) to prevent Pull the wires inside. The stop portion 35 is matched with the first positioning unit 341 and forms a limit for the first positioning unit 341. In this embodiment, the stopper portion 35 can be provided in two groups, and the two sets of stopper portions 35 are respectively located on opposite sides of the second positioning unit 342 in the circumferential direction of the second member 32, and the positioning positions are in these two groups. The stop portions 35 are arranged between them. In this embodiment, the stop portion 35 is configured to limit the rotation range of the first member 31 relative to the second member 32 to within 200 degrees. In one embodiment, the stopper 35 is configured to limit the rotation range of the first member 31 relative to the second member 32 to within 180 degrees. In one embodiment, the stop portion 35 is configured to limit the rotation range of the first member 31 relative to the second member 32 to within 90 degrees.

In this embodiment, the first member 31 is provided with a first mark 313, and the second member 32 is provided with a second mark 323 correspondingly. When the first side wall 311 of the first member 31 and the second side wall 312 of the second member 32 When inserting, by aligning the first identification 313 with the second identification 323, it can be ensured that the first positioning unit 341 is located between the two sets of stop portions 35 at a position with the second positioning unit 342.

As shown in FIG. 8, FIG. 9, FIG. 10 and FIG. 11, in this embodiment, a supporting unit 6 is further included, which is used to fix the light board 2 in the light tube 1. The supporting unit 6 includes a main body 61 and a supporting arm 62. The supporting arm 62 is fixed on the main body 61, and the supporting arm 62 abuts against the inner peripheral surface of the lamp tube 1 so that the supporting unit 6 is supported inside the lamp tube 1. The main body 61 has a first fixing part 611. The lamp panel 2 is fixed on the first fixing part 611. The lamp panel 2 is fixed by the first fixing part 611. The structure is simple and the process is simpler. The support unit 6 is not fixed to the lamp tube 1 , The supporting unit 6 can move or rotate relative to the lamp tube 1, therefore, it is easier to adjust the light output angle of the lamp panel 2 to complete the determination of the relative positions of the lamp cap 3 and the lamp panel 2. In this embodiment, the specific structure of the first fixing portion 611 includes a fixing surface 6111, and the lamp board 2 is fixed on the fixing surface 6111 (for example, by adhesive bonding). In this embodiment, in order to limit the relative position of the supporting unit 6 and the lamp board 2 in the axial direction of the lamp tube 1, the first fixing portion 611 is provided with a positioning post 6112, and the lamp board 2 is provided with a corresponding positioning post 6112 Locating hole 22. When the light board 2 and the supporting unit 6 are fixed, the positioning post 6112 is inserted into the positioning hole 22 so that the light board 2 and the supporting unit 6 are relatively fixed in position in the length direction of the light board 2. By providing the positioning post 6112 and the positioning hole 22, the contact area of the supporting unit 6 and the light board 2 can be increased, so that the connection stability is higher.

The support arm 62 in this embodiment is made of an elastic material, such as a plastic material in the prior art. When the support unit 6 is installed in the lamp tube 1, the support arm 62 applies force to the inner peripheral surface of the lamp tube 1 to achieve a better support and fixation effect. In this embodiment, in order to facilitate the support unit 6 to be inserted into the interior of the lamp tube 1, the support arm 62 includes a support portion 621 and a bent portion 622. The support portion 621 is connected to the main body 61 through the bent portion 622, wherein the bent portion 622 is connected to the lamp The inner circumferential surface of the tube 1 is kept at a distance so as to facilitate the insertion into the lamp tube 1 from the side located at the curved portion 622.

Further, the first fixing portion 611 in this embodiment has a positioning groove 612, and the bottom of the positioning groove 612 forms the fixing surface 6111. The positioning groove 612 has side walls 613 on both sides, and the lamp board 2 is clamped into the positioning groove 612 to be fixed. 2 relative rotation.

In this embodiment, the supporting unit 6 further has a second fixing portion 614. The basic structure of the second fixing portion 614 is the same as that of the first fixing portion 611, that is, the second fixing portion 614 also includes a fixing surface 6111 and a positioning groove 612. The second fixing portion 614 and the first fixing portion 611 are respectively provided on opposite sides of the main body 61 of the supporting unit 6 for fixing the two sets of light panels 2. The two groups of light panels 2 are arranged in opposite directions, so light is emitted from both sides of the light tube 1 to achieve the effect of double-sided light emission. In this embodiment, when the two sets of lamp panels 2 are respectively disposed at the first fixing part 611 and the second fixing part 612, the distance between the two sets of lamp panels 2 is maintained so that part of the heat of the light source 21 can be radiated through the lamp panel 2. Keep the space in the air between the two groups of light boards 2 to improve the heat dissipation effect.

As shown in Figures 3 and 9, the first fixing portion 611 and the second fixing portion 612 in this embodiment are symmetrically arranged in the lamp tube 1, and the fixing surface 6111 of the first fixing portion 611 and the second fixing portion 612 are fixed The ratio of the distance a between the surfaces (that is, the distance between the two groups of lamp panels 2) and the inner diameter r of the lamp tube 1 is 1:2-5. Preferably, the fixing surface 6111 of the first fixing portion 611 and the second fixing The distance a between the fixing surfaces of the portion 612 is the ratio of the inner diameter r of the lamp tube 1 to 1:2.5 to 4.5, and more preferably, the distance between the fixing surface 6111 of the first fixing portion 611 and the fixing surface of the second fixing portion 612 The distance a (that is, the distance between the two groups of lamp panels 2) is the ratio of the inner diameter r of the lamp tube 1 to 1:3~4. In this way, the front side (the side with the light source 21) and the back side of the lamp panel 2 simultaneously correspond to enough space to radiate the heat generated by the light source 21 into the air in the space.

As shown in Fig. 12, in this embodiment, in the radial width direction of the lamp tube 1, the cross section of the lamp tube 1 is divided into the first cross section S1 (one side of the lamp plate 2 in the lamp tube 1) by two groups of lamp panels 2. The light source 21 of one light board 2 is located on this side), the second section S2 (the area between the two light boards 2) and the third section S3 (the area on the side of the other light board 2 in the tube 1, The light source 21 of one of the light boards 2 is located on this side), the side of the light board 2 with the light source 21 needs more air to conduct convective heat dissipation (part of the heat generated by the light source 21 is directly radiated to the air, and the other part is conducted to the light board 2, and radiate to the air through the lamp panel 2, that is, the side of the lamp panel 2 with the light source 21 has more heat to be dissipated), therefore, the cross-sectional areas of the first section S1 and the third section S3 are both larger than The area of the second section S2.

In this embodiment, the cross-sectional areas of the first cross-section S1 and the third cross-section S3 are equal or approximately the same, and the ratio of the cross-sectional area of the first cross-section S1/the third cross-section S3 to the cross-sectional area of the second cross-section S2 is 1.5 to 2.5: 1. The smaller the cross-sectional area of the second section S2, the shorter the distance between the lamp plate 2 and the axis of the cross section of the lamp tube 1, and the greater the luminous angle of the light source 21 penetrating the lamp tube 1 after the light is emitted. The heat dissipation capacity of the surface where the light source 21 is placed) is correspondingly poor. On the contrary, when the cross-sectional area of the second section S2 is larger, the distance between the lamp plate 2 and the cross-sectional axis of the lamp tube 1 is shorter, and the light source 21 penetrates the lamp after emitting light. The smaller the light-emitting angle of the tube 1, the better the heat dissipation capacity on the back of the lamp board 2, and the ratio of the cross-sectional area of the first cross-section S1 to the cross-sectional area of the second cross-section S2 is set to 1.5 to 2.5:1, so First, on the one hand, the light source 21 can have a larger light output angle, and on the other hand, the heat dissipation effect of the light source 21 can be ensured.

In this embodiment, the light board 2 adopts a hard light board, such as an aluminum substrate or an FR4 board. In this embodiment, a plurality of supporting units 6 can be provided in the length direction of the light board 2 to provide sufficient support. For example, in the length direction of the light board 2, a supporting unit 6 is provided every distance between 200 mm and 250 mm. Considering the hardness of the light board 2, if the interval between the supporting units 6 is too long, the light board 2 between the two groups of supporting units 6 may be slightly bent, thereby affecting the light emitting effect. In this embodiment, the length of the light board 2 is between 500 mm and 550 mm, and the number of the supporting units 6 is 3 groups.

As shown in Figures 3 and 13, in this embodiment, since the lamp panel 2 is fixed in the lamp tube 1 by the support unit 6, the lamp panel 2 is directly bonded to the inner wall of the lamp tube 1 compared to a single-direction lamp tube structure. In this embodiment, the position of the lamp plate 2 in the lamp tube 1 is not fixed. Therefore, the second member 32 is provided with a stop surface 322 on the side close to the lamp plate 2 so as to extend the length of the lamp tube 1. In the direction, limit the position of the light board 2. In addition, a slot 323 is provided on the stop surface 322, and the end of the light board 2 is inserted into the slot 323 to be fixed, so that the relative rotation of the light board 2 in the lamp tube 1 can be restricted. A hole 3221 is opened at the stop surface 322 for the lead wire (not shown) to pass through, so that the lead wire can be respectively connected to the light board 2 and the power circuit board 51 to complete the electrical connection between the two.

As shown in FIG. 14, in this embodiment, the projections of the power circuit board 51 and the lamp board 2 in the radial direction of the lamp tube 1 do not overlap. Keep the distance in the axial direction. Therefore, when the power circuit board 51 and the lamp board 2 are connected by the wire 7, the length of the wire 7 is shorter. When the lamp holder 3 and the lamp tube 1 are matched, the distance of the power circuit board 51 into the tube is small (The distance the power circuit board 51 is inserted into the lamp tube 1), there is no need to bend the wire 7 greatly, so it is not easy to pull the wire 7 and cause the connection of the wire 7 and the power circuit board 51 or the lamp board 2 to be disconnected. For comparison, FIG. 15 is a schematic diagram of the cooperation between the power supply circuit board 510 and the lamp board 20 in the prior art, in which the projection of the power supply circuit board 510 and the lamp board 20 in the radial direction of the lamp tube 10 overlaps, that is, the power supply circuit board 510 and the lamp board 20 are staggered in the axial direction of the lamp tube 10. Therefore, during installation, the distance between the power supply circuit board 51 and the lamp tube 10 is relatively large (the distance between the power supply circuit board 510 and the lamp tube 10), which results in the need for longer wires 70, and when entering the tube, the wire 70 needs to be bent greatly, the wire 70 may affect other electronic components, and when entering the tube, the wire 70 is easily pulled, so that the connection between the wire and the power circuit board 510 or the light board 20 is disconnected.

As shown in FIGS. 3 and 13, in this embodiment, when the lamp tube 1 is connected to the second member 32, an abutting arm 324 is provided on the second member 32, and the abutting arm 324 extends in a direction away from the light board 2. And an abutting portion 3241 is provided at its end. The inner peripheral surface of the end of the lamp tube 1 is provided with a limiting protrusion 11, and the abutting portion 3241 of the abutting arm 324 corresponds to the limiting protrusion 11 in the axial direction of the lamp tube 1. After the second member 32 is inserted into the lamp tube 1, the abutting portion 3241 matches with the limiting protrusion 11 to prevent the second member 32 from being separated from the lamp tube 1 in the axial direction. In this embodiment, the abutting arm 324 is made of elastic material (such as plastic), so it is convenient for the abutting arm 324 to be inserted into the lamp tube 1.

In this embodiment, under normal conditions (when the second member 32 has not been inserted into the lamp tube 1), the distance from the abutting portion 3241 to the axis of the second member 32 is greater than the inner diameter of the lamp tube 1, so that the second member 32 After being inserted into the lamp tube 1, the abutting portion 3241 has an urging force on the inner peripheral surface of the lamp tube 1, so that the positional relationship between the second member 32 and the lamp tube 1 in the radial direction can be maintained.

In this embodiment, the light source 21 includes a number of LED lamp beads 211 (hereinafter referred to as lamp beads). In order to adjust the light output angle of the LED straight tube lamp, an optical unit can also be provided on the lamp beads 211. The design of the optical unit includes contact with the lamp beads. Or in different forms without contact, the optical unit includes a lens, a light-shielding sheet, a light-reflecting sheet, or any combination of the above.

As shown in FIGS. 16 and 17, in one embodiment, a lens 23 is provided. The lens 23 includes a bottom portion 231, a light emitting portion 232, and an incident portion 233. The bottom portion 231 is disposed on the light board 2 to contact or not to contact. The form faces the surface of the light board 2. The incident portion 233 is recessed on the bottom 231 and corresponds to the lamp bead 211, that is, the incident portion 233 faces the lamp bead 211, and when the incident portion 233 is recessed on the bottom 231, a cavity 234 is formed. 211 corresponds to the cavity 234. Furthermore, the projection of the lamp bead 211 in the width direction of the lamp panel 2 does not overlap with the cavity 234, so as to obtain a better light emitting effect. In other embodiments, the lamp bead 211 is at least partially accommodated in the cavity 234, that is, the projection of the lamp bead 211 in the width direction of the lamp panel 2 and the cavity 234 have overlapped portions to control the overall height, that is, the lamp panel 2 Set the overall height behind the lens 23.

In this embodiment as shown in FIG. 16, one optical unit includes one lens 23, that is, one optical unit corresponds to one lamp bead 211 one-to-one. In other embodiments, an optical unit includes a plurality of lenses 23 (not shown), that is, one optical unit corresponds to a plurality of lamp beads 211, and when an optical unit is installed, the lens 23 is provided on the plurality of lamp beads 211, In this way, the installation process of the optical unit can be simplified, and the production efficiency can be improved.

As shown in FIG. 17, in this embodiment, the light exit portion 232 has a top exit surface 2321 and a side exit surface 2322, and the side exit surface 2322 surrounds the top exit surface 2321. The top exit surface 2321 and the side exit surface 2322 may have different curvatures.

As shown in FIGS. 16 and 17, in this embodiment, the light emitting portion 232 is a revolving structure as a whole. When emitting light, the periphery of the light emitting portion 232 has a relatively uniform light emitting effect.

As shown in Figures 18 and 19, in other embodiments, the top exit surface 2321 has a length direction and a width direction, and the side exit surface 2322 includes a first side exit surface 2323 and a second side exit surface 2324. The side exit surface 2323 is provided on the side surface in the length direction of the top exit surface 2321, and the second side exit surface 2324 is provided on the side surface in the width direction of the top exit surface 2321. In a specific implementation, as shown in FIG. 18, the length direction of the top exit surface 2321 can be arranged along the length direction of the light board 2 to increase the light exit angle of the LED straight tube lamp along its length direction. As shown in FIG. 20, the width direction of the top exit surface 2321 can also be arranged along the length direction of the light board 2 to increase the light exit angle of the LED straight tube lamp along its width direction. In addition, as shown in FIG. 21, the aforementioned two setting methods can also be arranged in a staggered manner to increase the length of the LED straight tube lamp and the light output angle in the width direction at the same time. Specifically, the length direction of the top exit surface 2321 of one lens 23 can be set along the length direction of the light board 2, and the width direction of the top exit surface 2321 of the adjacent lens 23 can be along the length direction of the light board 2. set up.

As shown in FIG. 22, in another embodiment, a lens 23 is provided. The basic structure of the lens 23 is the same as that of the lens 23 of the previous embodiment. Specifically, the lens 23 in this embodiment includes a bottom portion 231, a light emitting portion 232, and In the incident portion 233, the bottom 231 is disposed on the light board 2 and faces the surface of the light board 2 in a contact manner. The specific bottom 231 is directly adhered to the surface of the light board 2. In this embodiment, the bottom 231 can be adhered to the surface of the light board 2 by glue, or it can be fixed to the surface of the light board 2 by its own adhesiveness. The incident portion 233 is recessed on the bottom 231 and corresponds to the lamp bead 211, that is, the incident portion 233 faces the lamp bead 211, and when the incident portion 233 is recessed on the bottom 231, a cavity 234 is formed. 211 corresponds to the cavity 234. Furthermore, the lamp bead 211 is at least partially accommodated in the cavity 234, that is, the projection of the lamp bead 211 in the width direction of the lamp board 2 and the cavity 234 have an overlapped portion to control the overall height, that is, the lamp board 2 The height of the whole after the lens 23 is set. In this embodiment, the cavity 234 is combined with the surface of the lamp bead 211, that is, there is no gap between the cavity 234 and the surface of the lamp bead 211.

In this embodiment, the lens 23 is made of silica gel and is directly formed on the lamp board 2. Specifically, as shown in FIG. 23, the injection molding is realized by the mold 7. As shown in FIG. 23, the mold 7 has a cavity 71, the shape of the cavity 71 is the shape of the lens 23, and the injection molding is provided on the mold 7. Hole 72, attach the mold 7 to the lamp board 2, and place the mold cavity 71 corresponding to the lamp bead 211, and inject the silica gel into the mold cavity 71 through the glue injection hole 72. After the silica gel is cured and formed, remove the mold 7 .

In one embodiment, an LED straight tube lamp is provided. The basic structure of the LED straight tube lamp can be the same as that of the LED straight tube lamp in FIG. The group of light boards 2 differs from the previous embodiment in that different configurations are used between the two groups of light boards 2, and the light board 2 in this embodiment does not need to be fixedly connected to the lamp holder, but the foregoing implementation can be applied The rotating structure of the lamp cap in the example (that is, the lamp cap 3 includes a first member 31, a second member 32 and a coupling structure 33).

Specifically, as shown in FIG. 24, two groups of light panels 2 are arranged oppositely in the lamp tube 1, so that the light sources 21 of the two groups of light panels 2 are arranged oppositely. In this embodiment, the two sets of lamp panels 2 are directly fixed on the inner circumferential surface of the lamp tube 1 by glue (not shown), so that a heat conduction path is formed between the light source 21, the lamp panel 2 and the lamp tube 1. Specifically, when the LED straight tube lamp is working, the heat generated by the light source 21 is conducted to the lamp panel 2 by thermal conduction, and then from the lamp panel 2 to the lamp tube 1 by thermal conduction, and then from the lamp tube 1 with a relatively large surface area. Do further heat dissipation to obtain a better heat dissipation effect.

For the convenience of description, in FIGS. 25-29, two lines are shown on the light source (first light source 2101, second light source 2102), which means that the light source (first light source 2101, second light source 2102) is in the width direction of the lamp tube 1. The light-emitting angle of the LED (usually the light-emitting angle of LED is about 120°).

As shown in Figure 25, from the perspective of the light emission of the LED straight tube lamp, when the two sets of light sources 21 are arranged oppositely, that is, the first light source 2101 and the second light source 2102 are arranged oppositely, in the width direction of the tube 1 (the tube 1 is along the Radial cross section), when the first light source 2101 and the second light source 2102 emit light, the first light-emitting area 2103 and the second light-emitting area 2104 are formed on the lamp tube 1 (the width direction of the light plate 2) (not considering the light plate 2 Shading factor), the central angle of the cross section of the lamp tube 1 corresponding to the first light-emitting area 2103 is a, and the central angle b of the cross section of the lamp tube 1 corresponding to the second light-emitting area 2104 is in order to satisfy the width direction of the lamp 1 360-degree light emission (ignoring the occlusion of the lamp board 2), the sum of the central angle a on the section of the lamp tube 1 corresponding to the first light-emitting area 2103 and the central angle b on the section of the lamp tube 1 corresponding to the second light-emitting area 2104 Is greater than or equal to 360 degrees. The first light-emitting area 2103 and the second light-emitting area 2104 referred to in this embodiment refer to the area where light is emitted from the tube 1 when the LED straight tube lamp is working (the light is the light directly emitted by the light source, not including the reflected light The light emitted after reflection or refracting by an optical unit such as a surface, a diffusion film, etc.).

As shown in FIG. 26, in some embodiments, the first light-emitting area 2103 and the second light-emitting area 2104 have an overlapping area 2105 (such as the hatched portion in FIG. 26), and the overlapping area 2105 corresponds to the cross section of the lamp tube 1. The central angle of is c. In order to satisfy the 360-degree light emission in the width direction of the lamp tube 1 (ignoring the occlusion of the lamp board 2), the central angle a, the central angle b and the central angle c need to satisfy the following relationship: a+bc≥360° . As shown in FIG. 27, in some embodiments, if the overlapping area 2105 is discontinuously distributed on the cross section of the lamp tube 1, it is necessary to calculate the sum of the central angles on the cross section of the lamp tube 1 corresponding to all the overlapping regions 2105.

As shown in Figure 27, in a preferred embodiment, the two sets of light panels 2 are arranged in parallel or approximately in parallel (that is, there is no angle between the two sets of light panels 2), so that the first light source 2101 and the second light source 2102 are The corresponding first light-emitting area 2103 and second light-emitting area 2104 are approximately symmetrically distributed (when the same light source is used). In this way, the lamp tube 1 (in the width direction) can obtain a more uniform light emission. Figure 30 is a light distribution diagram measured when the two sets of light panels 2 are configured as shown in Figure 27. As shown in Figure 30, from the light distribution point of view, the configuration of the light panels 2 in Figure 27 can achieve a larger light output angle. .

As shown in FIG. 26, in other embodiments, an included angle d is formed between the two groups of light panels 2 (an included angle d is formed between the plane extension lines of the two groups of light panels 2), and the included angle d is an acute angle . Specifically, the angle of the included angle d is less than one-half of the angle of the central angle c. For example, when the light emitting angle of the LED is about 120 degrees, the angle d is less than 40 degrees, preferably, the angle d is less than 30 degrees, and more preferably, the angle d is less than 10 degrees. In this embodiment, the angle d is formed between the two sets of lamp panels 2 so that the two sides of the lamp tube 1 can obtain different light exit angles, so as to meet various usage modes with different requirements.

In some embodiments, in order to reduce the shielding of the light plate 2 from the light emitted by the opposing surface light source, the angle of the central angle e in the width direction of the lamp tube 1 corresponding to the light plate 2 is set to be less than 40 degrees. Preferably, the central angle e is less than 35 degrees. Spend. That is to say, in the width direction of the lamp tube 1, the central angle of the light-emitting area occupied by the lamp tube 1 in the width direction is greater than 280 degrees. In addition, since the light source 21 is not arranged at the center of the lamp tube 1, in fact, the lamp tube 1 has a larger light emitting angle than 280 degrees. Taking the installation surfaces of the light sources 21 of the two groups of lamp panels 2 parallel to each other as an example, the light-emitting angle of one side of the lamp tube 1 exceeds 150 degrees.

In addition, in order to reduce the shielding of the light plate 2 from the light from the opposing surface light source, the distance between the light plate 2 and the lamp tube 1 can be further reduced. In other words, the distance L between the light plate 2 and the center of the lamp tube 1 can be further increased long. Specifically, as shown in Figure 28, the ratio of the distance L from the center of the lamp plate 2 to the center of the lamp tube 1 to the inner diameter of the lamp tube 1 is greater than 0.85. The ratio of the inner diameter of the tube 1 is greater than 0.9. More preferably, the ratio of the distance L from the center of the circle of the lamp plate 2 to the tube 1 to the inner diameter of the tube 1 is greater than 0.93. In this way, it is possible to effectively reduce the influence of blocking the light emitted from the surface light source.

As shown in FIG. 31, in one embodiment, when the two sets of lamp panels 2 are arranged oppositely, the light sources 21 (such as lamp beads) on the two sets of lamp panels 2 are staggered in the axial direction of the LED straight tube lamp. In this way, in the length direction of the lamp tube 1, there is a relatively uniform light emission effect.

As shown in FIG. 29, in other embodiments, in order to increase the light emitting angle of the lamp tube 1, two sets of lamp panels 2 can be arranged on the same side in the width direction of the lamp tube 1, that is, the inside of the lamp tube 1 in the width direction Composed of two equal parts, such as the first part 101 and the second part 102, the two sets of light panels 2 are located in the first part 101 or the second part 102 at the same time. In addition, the two sets of lamp panels 2 do not overlap in the width direction of the lamp tube 1. The above arrangement method increases the luminous angle of the lamp tube 1 on the one hand, and on the other hand, can increase the local luminous intensity of the lamp tube 1. Preferably, in this embodiment, the angle between the two sets of light panels 2 is greater than 90 degrees.

In some embodiments, the light board 2 may adopt a flexible substrate (FPC board) or a rigid substrate (such as an aluminum substrate, FR4 board).

As shown in Fig. 39, Fig. 40 and Fig. 41, in one embodiment, the lamp tube 1 has a light-transmitting area 101 and an opaque area 102 in its axial direction. Among them, the part of the lamp tube 1 where light is emitted outward is defined as the light-transmitting area 101, and the part of the lamp tube 1 where the light-shielding component is provided on the inner or outer surface is defined as the opaque area 102 (the light at the lamp 1 cannot be outside Projected part). In this embodiment, the end of the lamp tube 1 is provided with a lamp cap 3, and the part of the lamp tube 1 where the lamp cap 3 is provided is an opaque area 102. The lamp cap 3 can be sleeved on the outer surface of the lamp tube 1 or plugged inside the lamp tube 1 and connected with the lamp tube 1. A part of the length of the power supply (not shown) (the length along the axis of the lamp tube 1) is arranged in the opaque area 102, and the other part of the length of the power supply is arranged in the light-transmitting area 101, compared to The power supply is completely set in the lamp holder (the opaque area 102). The above setting can reduce the length of the lamp holder 3 for setting the power supply. When the overall size of the LED straight tube lamp is the same, the length of the light-transmitting area 101 can be increased (The ratio of the length of the light-transmitting area 101 to the length of the LED straight tube lamp is increased). Further, at least 50%, 60%, 70%, 80% or 85% of the length of the power source (length along the axis of the lamp tube 1) is located in the light-transmitting area 101 to further reduce the required length of the lamp cap 3.

In this embodiment, the light board 2 can generally adopt the aforementioned configuration, that is, two groups of light boards 2 are arranged opposite to each other in the lamp tube 1, so that the light sources 21 of the two groups of light boards 2 are arranged oppositely. In this embodiment, the light board 2 extends along the axial direction of the lamp tube 1 and reaches at least the position where the end of the light-transmitting area 101 corresponds to the power source. In other words, the light-transmitting area 101 of the lamp tube 1 is provided with a light source 21 at a position corresponding to the power source to increase the light output from the end of the lamp tube 1. From another perspective, the light-transmitting area 101 of the lamp tube 1 includes a first area 1011 and a second area 1012, where the first area 1011 is the portion of the light-transmitting area 101 corresponding to the position of the power source on the axial length of the lamp 1 (power Projection along the radial direction of the lamp tube 1 occupies the portion of the lamp tube 1), and the second area 1012 is the portion of the light-transmitting area 101 that does not correspond to the position of the power source along the axial length of the lamp tube 1. The light board 2 extends to at least the first area 1011. The light source 21 is provided in the portion of the light board 2 located in the first area 1011 so that the first area 1011 can emit light, and at least a part of the light is in the first area 1011. The light source 21 is provided to prevent the formation of a dark area in the first region 1011. As shown in Figure 41, the lamp tube 1 area on the left side of the dotted line X is the first area 1011, and the lamp tube 1 area on the right side of the dotted line is the second area 1012, and the dotted line is arranged along the end of the power supply or optical member 8. . In this embodiment, the first area 1011 may be provided with two groups, namely, located at both ends of the lamp tube 1, depending on the configuration of the power supply or the optical member 8.

In this embodiment, in order to control the light uniformity of the LED straight tube lamp, when the LED straight tube lamp is lit, the ratio of the average illuminance on the surface of the first region 1011 of the tube 1 to the average illuminance on the surface of the second region 1012 of the tube 1 is greater than 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, and less than 1.5. In one embodiment, when the LED straight tube lamp is lit, the ratio of the average illuminance on the surface of the first region 1011 of the tube 1 to the average illuminance on the surface of the second region 1012 of the tube 1 is greater than 0.5 but less than 1. In one embodiment, when the LED straight tube lamp is lit, the ratio of the average illuminance on the surface of the first region 1011 of the tube 1 to the average illuminance on the surface of the second region 1012 of the tube 1 is greater than 0.6 but less than 0.9. In one embodiment, when the LED straight tube lamp is lit, the ratio of the average illuminance on the surface of the first region 1011 of the tube 1 to the average illuminance on the surface of the second region 1012 of the tube 1 is greater than 0.7 but less than 0.9. In this embodiment, the average illuminance on the surface of the first area 1011 of the tube 1 is defined as the ratio of the total luminous flux emitted from the first region 1011 to the surface area of the first region 1011, and the average illuminance on the surface of the second region 1012 of the tube 1 is defined as the first The ratio of the total luminous flux emitted from the second area 1012 to the surface area of the second area 1012.

In order to control the light output uniformity of the LED straight tube lamp, in this embodiment, the arrangement density of the light sources 21 in the first area 1011 is greater than the arrangement density of the light sources 21 in the second area 1012. That is, in the unit length, the first area 1011 is provided with more light sources 21 than the second area 1012. In this way, the power supply is provided in the first area 1011, and the power supply affects the light output to a certain extent, by increasing the setting density of the light source 21 in the first area 1011, thereby reducing the difference in illuminance between the first area 1011 and the second area 1012 , And to improve the uniformity of the light. In this embodiment, at least 30%, 40%, 50%, 60%, or 70% of the total luminous flux generated by the light source 21 in the first region 1011 is emitted from the surface of the first region 1011 of the lamp tube 1, so that it can be The difference between the average illuminance on the surface of the first region 1011 of the tube 1 and the average illuminance on the surface of the second region 1012 of the tube 1 is reduced. Cooperating with the arrangement of the denser number of light sources 21 in the first area 1011, the difference between the average illuminance on the surface of the first area 1011 of the lamp tube 1 and the average illuminance on the surface of the second area 1012 of the lamp tube 1 can be further reduced.

This embodiment further includes an optical member 8. The optical member 8 is configured in a tube shape, and at least a part of the power source is located in the optical member 8. From another perspective, the part of the power supply located in the light-transmitting area 101 in the length direction of the lamp tube 1 is all disposed inside the optical member 8. Or, at least 90% of the portion of the power source located in the light-transmitting area 101 in the length direction of the lamp tube 1 is disposed inside the optical member 8. The surface of the optical member 8 is configured to have a reflection function. In one embodiment, a reflective coating is provided on the surface of the optical component 8 so that the surface has a reflective function. In one embodiment, the surface of the optical member 8 has a reflective function due to its own material properties, for example, the optical member 8 is made of PC material. Through the arrangement of the optical member 8, on the one hand, it can be used to place the power source and can fix the power source to a certain extent. On the other hand, it can reduce the absorption of light by the power source, thereby increasing the light output rate and reducing the first area. The difference between the illuminance of 1011 and the second area 1012.

In this embodiment, the arrangement of the optical member 8 can increase the light output of the light source 21 in the first area 1011. When the light output rate of the light source 21 in the first area 1011 is When the ratio of the luminous flux to a certain value (for example, 30%, 40%, 50%, 60%, 70% or 80%), when the LED straight tube lamp is lit, the presence of the optical member 8 will be visually weakened, that is In other words, when viewed from the outside, the existence of the optical member 8 will not be seen or hardly seen.

In this embodiment, in order to increase the light output rate of the light source 21 in the first region 1011, the optical member 8 is arranged in a circular tube shape, and the optical member 8 is arranged coaxially or substantially coaxially with the lamp tube 1. In addition, at least a part of the light generated by the light source 21 in the first area 1011 is directly emitted from the first area 1011 (without being reflected by the optical member 8), so as to reduce the light loss caused by the reflection by the optical member 8. In one embodiment, at least 25% of the luminous flux generated by the light source 21 is directly emitted from the first region 1011 (without reflection by the optical member 8), so as to reduce the light loss caused by reflection by the optical member 8.

As shown in FIGS. 39 to 42, in this embodiment, in order to reduce the visual presence of the optical member 8 when the LED straight tube lamp is lit, the light source 21 in the first area 1011 corresponds to the light-emitting area 10111 of the optical member 8 10112 has direct light emission. As shown in Figure 42 (Figure 42 only shows the projection area 10112 on one side, and there are actually projection areas 10112 on both sides; similarly, only the light source of the upper light source 21 is shown in Figure 42), the projection area 10112 is After the optical member 8 is projected laterally to the light-emitting area 10111, it occupies a positional area of the light-emitting area 10111. The light emitting area 10111 here refers to the part of the first area 1011 that is not blocked by the light board 2. Further, the light source 21 directly emits at least 80% of the luminous flux (not reflected by the optical member 8) emitted from the first area 1011 directly from the projection area 10112 (regardless of light diffusion or reflection at the first area 1011), so that The projection area 10112 has sufficient luminous flux to block the optical member 8 from the line of sight. In one embodiment, at least 30%, 40%, or 50% of the total luminous flux of the light emitted from the first area 1011 is emitted from the projection area 10112 to block the optical member 8 from the line of sight and reduce the visual presence of the optical member 8 . As shown in Figure 42, in the width direction of the lamp tube 1, the light-emitting angle of the light source 21 is A, and the light-emitting angle A of the light source 21 is the angle that is not blocked by the optical member 8 is B, and the ratio of the angle B to the angle A is greater than 0.2 . When considering the requirement of the power supply in the optical member 8, the ratio of the above-mentioned angle B to the light-emitting angle A is less than 0.5. In an embodiment, the light-emitting angle A of the light source 21 is 120 degrees, and the value of the angle B is greater than 20 degrees. When calculating the above angle, it is assumed that the light source 21 is a point light source, and the light is emitted from the center of the light emitting surface of the light source 21. In this embodiment, the angle B is equal to the sum of the angle C and the angle D, and the angle C is the angle between a line connecting the center of the light source 21 and tangent to the surface of the optical member 8 on the side of the light source 21 and the boundary line of the light emitting angle A The angle D is the angle between a line connecting the center of the light source 21 and tangent to the surface of the optical member 8 on the other side of the light source 21 and the boundary line of the light emitting angle A. The angle C and the angle D are approximately equal in magnitude.

In this embodiment, the larger the area irradiated by the light source 21 on both sides of the optical member 8 in the direction facing the light-emitting area 10111, the less likely it is to form a dark area on the optical member 8, thereby reducing the LED straight tube. The visual presence of the optical member 8 when the lamp is turned on. Specifically, as shown in FIG. 42, generally speaking, in the width direction of the lamp tube 1, at least 35%, 40%, 50%, or 60% of the outer surface of the optical member 8 receives direct light from the light source 21 to More areas on the surface of the optical member 8 are illuminated to reduce the dark areas on the surface of the optical member 8.

In this embodiment, the outer diameter of the lamp tube 1 is between 24 mm and 32 mm. The diameter of the optical member 8 is between 14 mm and 18 mm.

As shown in Figure 43 (the structure is the same as Figure 42), in this embodiment, the shortest distance from the plane where the light source 21 is located to the surface of the optical member 8 is E, and the outer diameter of the optical member 8 is R, and the ratio of E to R is greater than 0.2 , 0.25, 0.3 or 0.4. When the outer diameter of the lamp tube 1 is determined, the ratio of E to R needs to be less than 0.6 or 0.5 to ensure sufficient external dimensions of the optical member 8 for designing a cavity inside it for placing the power source.

As shown in FIGS. 44 to 47, the present invention provides an LED straight tube lamp in an embodiment, which includes a tube a1, an end a2, a light source a3, and a power source a4. Wherein, the lamp tube a1 is an integral tubular structure, which can be a glass lamp tube or a plastic lamp tube. The end a2 is arranged at the ends of the two ends of the lamp a1 to block its ends. The end a2 is provided with an electrical connection part a201 for connecting to electricity. The structure and size of the end a2 at both ends of the lamp a1 can be Same or different. In this embodiment, the light source a3 is located inside the lamp tube a1, and most of the power source a4 (for example, more than 80% of the length of the power source a4 is located in the lamp tube a1) or all of it is located inside the lamp tube a1.

As shown in FIGS. 47 and 48, the lamp tube a1 in this embodiment is provided with a supporting unit a5 inside, and the supporting unit a5 has a supporting portion a51, and the supporting unit a5 is supported on the inner surface of the lamp tube a1 through the supporting portion a51. The supporting unit a5 is made of plastic material, and an installation unit a52 for installing the light source a3 is provided. When the light source a3 is lit, heat is generated, which may cause deformation of the plastic support unit a5. Therefore, the lamp tube a1 is preferably made of material with higher heat resistance or rigidity, that is, the heat resistance or rigidity of the lamp tube a1 is better than that of the support unit a5. To limit the deformation of the supporting unit a5, for example, the lamp tube a1 uses a glass lamp tube. The supporting portion a51 in this embodiment is arranged in a circular arc shape and has two groups, and the supporting portion a51 provides supporting surfaces a511. After each group of supporting surfaces a511 corresponds to the inner surface of the lamp tube a1, on the cross section of the lamp tube a1, The central angle of each group of supporting surfaces a511 is greater than 50 degrees, that is, the central angle of the inner surface of the lamp tube a1 is greater than 50 degrees. The sum of the central angles of the two sets of supporting surfaces a511 is greater than 100 degrees. On the premise of providing sufficient support, the shielding of light by the supporting surface a511 needs to be considered. In order to ensure the light-emitting angle of the lamp a1 and ensure that the supporting unit a5 provides sufficient support, the sum of the central angles of the two supporting surfaces a511 is set as More than 100 degrees and less than 135 degrees.

As shown in FIGS. 47 and 48, the light source a3 in this embodiment includes a circuit board a31 and a plurality of light-emitting bodies a32, and the light-emitting body a32 is fixed on the circuit board a31 and is electrically connected to the circuit board a31. The luminous body a32 may be an LED lamp bead in the prior art.

In this embodiment, the circuit board a31 is provided with two groups, the mounting units a52 on the supporting unit a5 are configured into two groups, and the two groups of circuit boards a31 are respectively mounted on the two mounting units a52. Several luminous bodies a32 are respectively arranged on the two sets of circuit boards a31. The luminous bodies a32 located on the two sets of circuit boards a31 emit light in two opposite directions, respectively. That is, the two sets of circuit boards a31 are arranged in parallel in the lamp tube a1, and the luminous bodies a32 are arranged on opposite sides of the two sets of circuit boards a31. The two sets of circuit boards a31 can be electrically connected by wires. Therefore, the power supply a4 can directly drive the two sets of light sources a3 to light up at the same time.

The mounting unit a52 in this embodiment is provided with a card slot a521, and both sides of the circuit board a31 are locked into the card slot a521 to complete the fixing of the light source a3. The slot a521 extends along the axial direction of the lamp tube a1, and it can be a whole section or a multi-section type. The circuit board a31 in this embodiment is a rigid board (such as an aluminum substrate or an FR4 board), so that the circuit board a31 can be directly inserted into the slot a521 along the length of the lamp a1. Considering the heat dissipation requirements, the circuit board a31 in this example uses an aluminum substrate. The heat generated by the luminous body a32 can be quickly transferred to the circuit board a31 for heat dissipation. The circuit board a31 can dissipate part of the heat by means of heat radiation, and part The heat is conducted to the supporting unit a5 for heat dissipation. In this embodiment, the thermal conductivity of the support unit a5 is smaller than the thermal conductivity of the circuit board a31 (the overall thermal conductivity), but the support unit a5 has a larger heat dissipation surface area, that is, the surface area of the support unit a5 is larger than that of the circuit board a31. Surface area.

In this embodiment, the supporting unit a5 is provided with an accommodating space a53. The accommodating space a53 contains a medium with low thermal conductivity (such as air). The two sets of circuit boards a31 are separated by the medium to prevent the two sets of circuits. The heat on the plate a31 influences each other. In order to ensure the distance between the two sets of circuit boards a31, the ratio of the width of the accommodating space a53 (in the direction perpendicular to the circuit board a31) to the diameter of the inner surface of the lamp tube a1 is at least greater than 0.3, 0.32, or 0.35. However, considering the space required for the installation and light emission of the light source a31, the aforementioned ratio should be less than 0.5, 0.45 or 0.4 to ensure the space required for the installation and light emission of the light source a31. The power supply a4 in this embodiment can be arranged in the accommodating space a53. For example, all the power supply a4 is set in the accommodating space a53 of the support unit a5, or at least 80%, 85%, 90%, or 95% of the length of the power supply a4 is set in the accommodating space a53, and the rest is located at the end a2. In this way, since all or most of the power supply a4 is arranged in the accommodating space a53 of the supporting unit a5, the size required for the end a2 can be reduced, and the LED straight tube lamp can be increased while the total length remains the same. The length of the light can enhance the lighting effect.

In order to improve the optical effect, an optical member a6 can also be provided. The optical member a6 can be configured to have one or more functions of reflection, refraction, light transmission, and light diffusion to enhance the light effect.

As shown in FIG. 47 and FIG. 48, in this embodiment, the optical component a6 includes a lens a61. The lens a61 is provided in several groups (the same number as the luminous body a32), and the lens a61 is arranged on the luminous body a32 and arranged in a one-to-one correspondence. . By setting the lens a61, the light emitted by the luminous body a32 can be diffused, so that the luminous body a32 is in a smaller space (due to the setting of the accommodating space a53, the setting space of the luminous body a32 is perpendicular to the circuit board The size in the direction of a31 only accounts for 20% to 35% of the diameter of the inner surface of the lamp tube a1), which has a larger light exit angle.

As shown in Figure 47 to Figure 54, the end a2 in this embodiment includes a first member a21 and a second member a22. The first member a21 is configured to be connected to the lamp tube a1. The end surface of the second member a22 is provided with the electric Connecting part a201. At least 80%, 85%, 90%, or 95% of the length of the second member a22 (when the electrical connection portion a201 is not considered) in the axial direction of the lamp tube a1 is located inside the first member a21. In one embodiment, the second member a22 (when the electrical connection portion a201 is not considered) is all located inside the first member a21 in the axial direction of the lamp tube a1. Therefore, the second member a21 (when the electrical connection portion a201 is not considered) will not occupy the extra length of the LED straight tube lamp.

In this embodiment, the first member a21 is connected to the lamp tube a1. Specifically, the first member a21 and the lamp tube a1 are connected by a sleeve connection. In one embodiment, at least a part of the first member a21 is stuffed into the lamp tube a1, and the two are bonded by glue. In an embodiment, at least a part of the first member a21 is sleeved on the outside of the lamp tube a1, and the two are bonded by glue.

In this embodiment, at least a part of the first member a21 is inserted into the lamp tube a1, and the first member a21 is provided with a limiting portion a211, and the limiting portion a211 is matched with the end of the lamp tube a1 to restrict the first member a21 Insert to the depth of the tube a1. In some embodiments, the length of the portion of the first member a21 (excluding the electrical connection portion a201) located outside the axial direction of the lamp tube a1 accounts for no more than 30% of the total length of the first member a21. In some embodiments, the length of the portion of the first member a21 (excluding the electrical connection portion a201) located outside the axial direction of the lamp tube a1 accounts for no more than 20% of the total length of the first member a21. In this way, the exposed size of the end a2 can be reduced, and the length of the non-luminous area in the longitudinal direction of the LED straight tube lamp can be reduced.

In this embodiment, the outer surface of the lamp tube a1 is not covered by a shield (the end a2 is in the form of an inner plug and will not cover the outer surface of the lamp tube a1). Therefore, the lamp tube a1 has an outer surface in its axial direction. All light is emitted, so the length of the dark area at both ends of the LED straight tube lamp is reduced.

In this embodiment, part of the light emitted by the luminous body a32 at both ends of the tube a1 will be absorbed by the end a2, resulting in a relatively low illuminance on the outer surface of the two ends of the tube a1. Therefore, the unit length at both ends of the tube a1 is set The number or density of the luminous bodies a32 is greater than the number or density of the luminous bodies a32 provided per unit length of other parts of the lamp tube a1.

In this embodiment, the first member a21 and the second member a22 are relatively rotatably connected. Therefore, the positional relationship between the first member a21 and the lamp tube a1 (light source a3) can be adjusted, that is, when the electrical connection part a201 on the second member a22 is installed in the lamp holder (the lamp holder is fixed), By rotating the first member a21, the direction of the lamp tube a1 (light source a3) can be adjusted, thereby adjusting the light emitting direction of the light source a3. From another perspective, after the lamp tube a1 is fixed (the light emitting direction is determined), if the electrical connection part a201 is not aligned with the lamp holder, the first member a21 can be rotated to align the electrical connection part a201 with the lamp holder. In order to complete the installation.

In this embodiment, the first member a21 and the second member a22 are rotatably connected by a coupling structure a23. The combination structure a23 includes an annular groove a231 and a guide protrusion a232. One of the guide protrusion a232 and the annular groove a231 is provided on the first member a21, and the other is provided on the second member a22, and the guide protrusion Both a232 and the annular groove a231 extend along the circumferential direction of the end a2, and after the guiding protrusion a232 and the annular groove a231 cooperate with each other, the guiding protrusion a232 can rotate along the annular groove a231. In this embodiment, the part of the connecting structure a23 and the first member a21 for connecting the lamp tube a1 at least partially overlaps in the radial direction of the lamp tube a1, so that in the axial direction of the lamp tube a1, the first member a21 and the first member a21 The arrangement of the two members a22 is more reasonable, the end a2 is connected to the lamp tube a1, and the length required to complete the rotatable mechanism is reduced, so as to control the length of the entire end a2. However, in the prior art, the part of the first member sleeved outside the lamp tube cannot be designed with a combined structure. Therefore, the part of the first member sleeved outside the lamp tube and the combined structure are separated in the axial direction of the lamp tube. Large length to achieve the same function.

In this embodiment, the first member a21 is sleeved on the outside of the second member a22, the guiding protrusion a232 is provided on the outer surface of the second member a22, and the annular groove a231 is provided on the inner surface of the first member a21. In this embodiment, the guide protrusion a232 can be arranged in the annular groove a231 by a snap-fitting method. In the past, the first member a21 and the second member a22 are positioned and fixed in the axial direction.

The end a2 in this embodiment further includes a positioning unit a24, and the position or angle of the first member a21 and the second member a22 when they rotate relative to each other is positioned by the positioning unit a24. The positioning unit a24 includes a first positioning unit a241 and a second positioning unit a242, and the first positioning unit a241 and the second positioning unit a242 cooperate to achieve positioning. The first positioning unit a241 is provided on the first member a21, and the second positioning unit a242 is provided on the second member a22. In other embodiments, the first positioning unit a241 may also be disposed on the second member a22, and the second positioning unit a242 is disposed on the first member a21. Through the cooperation of the first positioning unit a241 and the second positioning unit a242, the relative fixation of the first member a21 and the second member a22 can be realized, and the relative position of the first member a21 and the second member a22 can be prevented from being changed due to external force. Thereby affecting the direction of the light.

In this embodiment, the first positioning unit a241 includes several continuous or discontinuous positioning positions. When the second positioning unit a242 matches the positioning positions, the relative rotation of the first member a21 and the second member a22 is restricted. Several positioning positions are evenly distributed along the circumferential direction of the second member a22, and the rotation angle between adjacent positioning positions is 5-15 degrees. In other words, when the second positioning unit a242 is rotated to a position matching with a positioning position to a position matching with another adjacent positioning position, the rotation angle of the first member a21 relative to the second member a22 is 5-15 degrees. In an embodiment, the rotation angle between adjacent positioning positions is 10 degrees. In this embodiment, the first positioning unit a241 includes a plurality of teeth a2411, the positioning positions are formed between adjacent teeth a2411 (the groove a2412 is formed between adjacent teeth a2421), and the second positioning unit a242 includes The positioning protrusion a2421, the positioning protrusion a2421 can be clamped at the positioning position (the groove a2412), thereby completing positioning. The above positioning method has simple structure, convenient assembly and high positioning reliability.

In this embodiment, the relative rotation angle of the first member a21 and the second member a22 is limited to 240 degrees. That is to say, the first member a21 and the second member a22 are limited to rotating adjustment within the above-mentioned angle range to prevent the electrical connection structure (such as the wire) inside the LED straight tube lamp from being pulled off after excessive rotation, especially the connecting end The electrical connection structure between the part a2 and the power source a4 or the end part a2 and the light source a3.

In this embodiment, the first member a21 is provided with two sets of stop portions a25, and the above-mentioned rotation angle is defined between the two sets of stop portions a25, that is, the second positioning unit a242 is restricted to the two sets of stop portions. Rotate between a25. The tooth portion a2411 is arranged on the first member a21 at a position between the two sets of stop portions a25. In this embodiment, the stop portion a25 is configured to limit the rotation range of the first member a21 relative to the second member a22 to within 180 degrees.

In this embodiment, the second positioning unit a241 includes a main body portion a2413, and the tooth portion a2411 and the stop portion a25 are both provided on the main body portion a2413. The main body a2413 includes a first portion a24131 connected to the inner surface of the first member a21 and a second portion a24132 not connected to the inner surface of the first member a21. In the circumferential direction of the first member a21, the proportion of the first portion a24131 is smaller than the proportion of the second portion a24132. At the second part a24132, since it is not connected to the inner surface of the first member a21, it has a larger elastic deformation space in the radial direction of the first member a21, which is beneficial to the second positioning unit during rotation adjustment. The fit of a242 and groove a2412. In this embodiment, the main body a2413 also functions as a limiter to limit the depth at which the second member a22 is inserted into the first member a21.

As shown in Figures 44 to 47, in order to improve the structural strength of the tube a1, a plastic film a7 can be provided outside the tube a1 of the LED straight tube lamp in this embodiment, and the plastic film a7 at least covers the outer surface of the tube a1 . In order to improve the aesthetics, the plastic film a7 extends at least to the end a2 and covers at least part of the end a2. In addition, since the plastic film a7 extends to the end a2, the plastic film a7 covers the seam between the end a2 and the lamp tube a1, which can prevent dust from accumulating at the seam or even entering the lamp tube a1 through the seam. Affect the light.

In this embodiment, the luminous flux emitted by the LED straight tube lamp covered with the plastic film a7 reaches at least 85% of the luminous flux emitted by the LED straight tube lamp not covered with the plastic film a7. For this reason, the light transmittance of the plastic film a7 can be set to be greater than 85%. In one embodiment, the light transmittance of the plastic film a7 is greater than 90%. In some embodiments, diffusion particles or light conversion particles may be provided in the plastic film a7 to meet different optical requirements.

The present utility model has been disclosed in a preferred embodiment above. However, those skilled in the art should understand that this embodiment is only used to describe some of the embodiments of the present utility model, and should not be interpreted as a limitation. It should be noted that all changes and substitutions equivalent to this embodiment or any reasonable permutation and combination of the above-mentioned features should be included in the scope supported by the specification of the present invention.

Claims

An LED straight tube lamp, including:

Lamp

Two sets of light panels are arranged in the lamp tube, and the light panels are provided with a number of light sources; and

Two lamp caps, which are respectively arranged at both ends of the lamp tube, and hollow conductive pins for connecting to an external power supply are provided on the lamp caps;

The lamp cap includes a first member, a second member, and a positioning unit. The first member is provided with a first rotating member, the second member is provided with a second rotating member, and the first rotating member is connected to the second member. Rotating component matching;

The positioning unit includes a first positioning unit and a second positioning unit, wherein the first positioning unit is disposed on the first member, the second positioning unit is disposed on the second member, and the first positioning unit is disposed on the second member. A positioning unit cooperates with the second positioning unit to fix the relative positions of the first member and the second member.
The LED straight tube lamp of claim 1, wherein the second positioning unit includes a number of continuous or discontinuous positioning positions, and when the first positioning unit matches the positioning position, the second positioning unit is restricted Relative rotation between a member and the second member.
The LED straight tube lamp of claim 2, wherein a plurality of the positioning positions are evenly distributed along the circumferential direction of the second member, and the angle formed between adjacent positioning positions is 5-15 degrees.
The LED straight tube lamp according to claim 3, characterized in that: the second positioning unit includes a plurality of teeth, the positioning positions are formed between adjacent teeth, and the first positioning unit includes a positioning protrusion , The positioning convex portion is clamped at the positioning position.
The LED straight tube lamp according to claim 1, wherein a stopper is provided on the second member, and the stopper is configured to limit the first member relative to the second member within a certain range Rotate.
The LED straight tube lamp of claim 5, wherein the stopper is configured to limit the rotation range of the first member relative to the second member to within 200 degrees.
7. The LED straight tube lamp of claim 6, wherein the stopper is configured to limit the rotation range of the first member relative to the second member to within 180 degrees.
7. The LED straight tube lamp of claim 7, wherein the stopper is configured to limit the rotation range of the first member relative to the second member to within 90 degrees.
The LED straight tube lamp according to claim 5, wherein the stop part matches with the first positioning unit, and forms a limit for the first positioning unit.
The LED straight tube lamp according to claim 9, characterized in that: the stopper portion is provided in two groups, and the two groups of stopper portions are respectively located in the second member in the circumferential direction of the second member. Locate the opposite sides of the unit.
The LED straight tube lamp of claim 1, wherein the first member includes a first side wall and an end wall, wherein the hollow conductive needle is disposed on the end wall, and the second member It includes a second side wall, the first rotating member is an annular convex portion arranged on the first side wall, and the second rotating member is an annular groove arranged on the second side wall.
The LED straight tube lamp of claim 1, further comprising a power supply, the lamp tube has a light-transmitting area and a light-impermeable area in its axial direction, and a part of the length of the power supply is arranged at In the opaque area, and the other part of the length of the power supply is arranged in the light-transmitting area, the two groups of the lamp boards are arranged oppositely in the lamp tube, so that the two groups of the lamps The light sources of the board are arranged relative to each other.
The LED straight tube lamp of claim 12, wherein at least 50%, 60%, 70%, 80%, or 85% of the length of the power supply is located in the light-transmitting area.
The LED straight tube lamp of claim 12, wherein the light-transmitting area of the lamp tube includes a first area and a second area, wherein the first area is the light-transmitting area in the The axial length of the lamp tube corresponds to the part of the power supply position, and the second area is the part of the light-transmitting area that does not correspond to the power supply position in the axial length of the lamp tube, and the lamp plate extends at least The light source is arranged in a part of the light board in the first area where the light board is located in the first area.
The LED straight tube lamp of claim 14, wherein when the LED straight tube lamp is lit, the average illuminance of the surface of the first area of the lamp tube is equal to the average of the surface of the second area of the lamp tube. The ratio of illuminance is greater than 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9, and less than 1.5.
The LED straight tube lamp of claim 14, wherein when the LED straight tube lamp is lit, the average illuminance of the surface of the first area of the lamp tube is equal to the average of the surface of the second area of the lamp tube. The ratio of illuminance is greater than 0.5 and less than 1.
The LED straight tube lamp of claim 14, wherein when the LED straight tube lamp is lit, the average illuminance of the surface of the first area of the lamp tube is equal to the average of the surface of the second area of the lamp tube. The ratio of illuminance is greater than 0.6 and less than 0.9.
The LED straight tube lamp of claim 14, wherein when the LED straight tube lamp is lit, the average illuminance of the surface of the first area of the lamp tube is equal to the average of the surface of the second area of the lamp tube. The ratio of illuminance is greater than 0.7 and less than 0.9.
The LED straight tube lamp according to any one of claims 15 to 18, wherein the arrangement density of the light sources in the first area is greater than the arrangement density of the light sources in the second area.
The LED straight tube lamp according to claim 19, characterized in that: at least 30%, 40%, 50%, 60% or 70% of the total luminous flux generated by the light source in the first area is from the The surface of the first area of the lamp tube is emitted.
The LED straight tube lamp of claim 14, further comprising an optical member, the optical member is configured in a tube shape, at least a part of the power source is located in the optical member, and the surface of the optical member is configured with a reflection function.
22. The LED straight tube lamp of claim 21, wherein the part of the power supply located in the light-transmitting area in the length direction of the lamp tube is all disposed inside the optical member.
22. The LED straight tube lamp of claim 21, wherein at least 25% of the luminous flux generated by the light source located in the first area is directly emitted from the first area.
The LED straight tube lamp according to claim 21, wherein the light source has a direct light output at the light output area of the first area corresponding to the projection area of the optical member, wherein the light output area is The portion of the first area that is not blocked by the light board, and the projection area is the area occupied by the optical member after being projected laterally to the light emitting area.
The LED straight tube lamp of claim 24, wherein at least 30%, 40% or 50% of the total luminous flux emitted from the first area is emitted from the projection area.
The LED straight tube lamp according to claim 21, characterized in that: in the width direction of the lamp tube, at least 35%, 40%, 50% or 60% of the outer surface of the optical member accepts the Direct light from the light source.
22. The LED straight tube lamp of claim 21, wherein the outer diameter of the lamp tube is 24 to 32 mm, and the diameter of the optical member is 14 to 18 mm.
The LED straight tube lamp of claim 21 or 27, wherein the ratio of the shortest distance from the plane where the light source is located to the surface of the optical member to the outer diameter of the optical member is greater than 0.2, 0.25, 0.3 or 0.4 , And less than 0.6 or 0.5.
An LED straight tube lamp, including:

Lamp

Two sets of light panels are arranged in the lamp tube, and the light panels are provided with a number of light sources;

Two lamp caps, which are respectively arranged at two ends of the lamp tube, and hollow conductive pins for connecting to an external power source are provided on the lamp caps; and

A supporting unit, which is arranged inside the lamp tube, the supporting unit has a supporting part, and is supported on the inner surface of the lamp tube through the supporting part, and two sets of the lamp panels are installed on the supporting unit ；

The lamp cap includes a first member, a second member and a positioning unit, and the first member and the second member are rotatably connected;

The positioning unit includes a first positioning unit and a second positioning unit, wherein the first positioning unit is disposed on the first member, the second positioning unit is disposed on the second member, and the first positioning unit is disposed on the second member. A positioning unit cooperates with the second positioning unit to fix the relative positions of the first member and the second member.
The LED straight tube lamp of claim 29, wherein the heat resistance or rigidity of the lamp tube is better than that of the supporting unit.
The LED straight tube lamp according to claim 29, characterized in that: the supporting portion has two groups, and the cross-sectional shape of the supporting portion is set in an arc shape to form a supporting surface, and the centers of the two supporting surfaces are The sum of the angles is greater than 100 degrees.
The LED straight tube lamp of claim 31, wherein the sum of the central angles of the two groups of the supporting surfaces is less than 135 degrees.
The LED straight tube lamp according to claim 31, characterized in that: the two groups of the lamp panels are arranged in parallel in the lamp tube, and the light sources of the two groups of the lamp panels are arranged on the two groups of the lamp panels The opposite surface.
The LED straight tube lamp according to claim 29, characterized in that: the supporting unit is equipped with an installation unit for installing the light board, the installation unit is provided with a card slot, and both sides of the light board are inserted into In the card slot.
The LED straight tube lamp of claim 34, wherein the thermal conductivity of the supporting unit is smaller than the thermal conductivity of the light board, and the surface area of the supporting unit is larger than the surface area of the light board.
The LED straight tube lamp of claim 29, further comprising a power source, the supporting unit is provided with an accommodating space, and the power source is provided in the accommodating space.
The LED straight tube lamp of claim 36, wherein the ratio of the width of the accommodating space to the diameter of the inner surface of the tube is at least greater than 0.3, 0.32, or 0.35, and less than 0.5, 0.45 Or 0.4.
The LED straight tube lamp of claim 29, wherein a lens is correspondingly provided at the light source.
The LED straight tube lamp of claim 29, wherein at least a part of the first member is inserted into the lamp tube and connected to the lamp tube, and the end surface of the second member is provided with the hollow Conductive needle.
The LED straight tube lamp according to claim 39, wherein at least 80%, 85%, 90% or 95% of the length of the second member in the axial direction of the lamp tube is located in the first Inside the component.
The LED straight tube lamp of claim 39, wherein the second member is all located inside the first member in the axial direction of the lamp tube.
The LED straight tube lamp according to claim 39, wherein a limit part is provided on the first member, and the limit part matches the end of the lamp tube.
The LED straight tube lamp according to claim 42, wherein the length of the portion of the first member located outside the axial direction of the lamp tube accounts for no more than 30% of the total length of the first member.
The LED straight tube lamp of claim 42, wherein the length of the portion of the first member located outside the axial direction of the lamp tube accounts for no more than 20% of the total length of the first member.
The LED straight tube lamp according to claim 39, wherein the number or density of the light sources provided per unit length at both ends of the tube is greater than the number of light sources provided per unit length in other parts of the tube Or density.
The LED straight tube lamp according to claim 29, characterized in that: the first member and the second member are connected by a coupling structure, and the coupling structure includes an annular groove and a guide protrusion, the guide protrusion One of the portion and the annular groove is provided on the first member, and the other is provided on the second member.
The LED straight tube lamp of claim 29, wherein the part of the coupling structure and the first member for connecting the lamp tube at least partially overlaps in the radial direction of the lamp tube.
The LED straight tube lamp of claim 46, wherein the first member is sleeved on the outside of the second member, the guide protrusion is provided on the outer surface of the second member, and the The annular groove is provided on the inner surface of the first member.
The LED straight tube lamp of claim 29, wherein the first positioning unit includes a number of continuous or discontinuous positioning positions, and when the second positioning unit is matched to the positioning position, the second positioning unit is restricted. Relative rotation between a member and the second member.
The LED straight tube lamp of claim 49, wherein a plurality of the positioning positions are evenly distributed along the circumferential direction of the first member, and the angle formed between the adjacent positioning positions is 5-15 degrees.
The LED straight tube lamp of claim 50, wherein the first positioning unit includes a plurality of teeth, the positioning positions are formed between adjacent teeth, and the second positioning unit includes a positioning protrusion , The positioning convex portion is clamped at the positioning position.
The LED straight tube lamp of claim 29, wherein a stopper is provided on the first member, and the stopper is configured to limit the second member within a certain range relative to the first member Rotate.
The LED straight tube lamp of claim 51, wherein the stopper is configured to limit the rotation range of the second member relative to the first member to within 240 degrees.
The LED straight tube lamp according to claim 53, characterized in that the stopping parts are arranged in two groups, and the second positioning unit is restricted to rotate between the two stopping parts.
The LED straight tube lamp of claim 53, wherein: the first positioning unit includes a main body, the teeth and the stopper are both provided on the main body, and the main body includes The first part connected to the inner surface of the first member and the second part not connected to the inner surface of the first member, in the circumferential direction of the first member, the proportion of the first part is smaller than that of the first part The proportion of the two parts.
The LED straight tube lamp of claim 29, wherein a plastic film is arranged outside the lamp tube.
The LED straight tube lamp of claim 56, wherein the plastic film extends to the lamp cap and covers at least part of the lamp cap.