CN105782861B

CN105782861B - LED straight tube light

Info

Publication number: CN105782861B
Application number: CN201510746094.1A
Authority: CN
Inventors: 江涛; 颜荣毅
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2014-11-06
Filing date: 2015-11-05
Publication date: 2024-04-02
Anticipated expiration: 2035-11-05
Also published as: CN205261404U; CN105782861A; WO2016070824A1

Abstract

An LED straight tube lamp comprises: a lamp holder, a glass lamp tube and a lamp cap sleeved on both ends of the glass lamp tube, a lamp board arranged in the glass lamp tube, the lamp board being provided with a plurality of light sources; a power source is arranged in the lamp cap, the light source and the power source are electrically connected through the lamp board; the lamp cap comprises a lamp cap body, a conductive pin arranged at the top of the lamp cap, a telescopic device whose end moves along the direction of the conductive pin and extends out of the lamp cap, and a stop member is provided on the telescopic device. The present invention provides an LED straight tube lamp, wherein both ends of the glass lamp tube are provided with lamp caps with protection switches, the protection switch realizes the safety function that the two end covers of the lamp tube must be in the lamp holder at the same time before the power is turned on, thereby ensuring that the installer does not have the risk of electric shock during installation, and at the same time increasing the safety and applicability of the installation of the LED straight tube lamp.

Description

LED straight tube lamp

Technical Field

The invention relates to the field of lighting appliances, in particular to an LED straight tube lamp and elements thereof, wherein the LED straight tube lamp comprises a light source and a lamp cap.

Background

LED lighting technology is rapidly evolving to replace traditional incandescent and fluorescent lamps. Compared with fluorescent lamps filled with inert gas and mercury, the LED straight tube lamp does not need to be filled with mercury. Therefore, in various lighting systems for home use or workplace use, which are dominated by lighting options such as conventional fluorescent lamps and lamps, LED straight lamps have not unexpectedly become a highly desirable lighting option. Advantages of LED straight tube lamps include increased durability and lifetime, and lower energy consumption. Thus, an LED straight tube lamp would be a cost effective lighting option, taking all factors into account.

The conventional LED straight tube lamp generally comprises a lamp tube, a circuit board which is arranged in the lamp tube and provided with a light source, and lamp holders which are arranged at two ends of the lamp tube, wherein a power supply is arranged in the lamp holders, and the light source and the power supply are electrically connected through the circuit board. However, when the LED straight tube lamp is a double-ended power supply, if one of the two ends of the LED straight tube lamp is inserted into the lamp holder and the other end of the LED straight tube lamp is not inserted into the lamp holder, a user may touch a metal or conductive part not inserted into the lamp holder end, so that an electric shock may occur.

In view of the above problems, the present invention and its embodiments are presented below.

Disclosure of Invention

The invention provides a novel LED straight tube lamp for solving the problems.

The invention provides an LED straight tube lamp, comprising:

the lamp comprises a lamp holder, a glass lamp tube and lamp holders sleeved at two ends of the glass lamp tube;

the lamp panel is arranged in the glass lamp tube, and a plurality of light sources are arranged on the lamp panel;

a power supply is arranged in the lamp cap, and the light source is electrically communicated with the power supply through the lamp panel; the lamp cap comprises a lamp cap body, a conductive needle arranged at the top end of the lamp cap, and a telescopic device of which one end moving along the direction of the conductive needle extends out of the lamp cap, wherein a stop component is arranged on the telescopic device. The movement amplitude of the telescopic device (namely the amplitude of the telescopic device extending out of the lamp holder body) is controlled by the stop component.

Further, a fixed point for fixing the spring is arranged on the stop component, one end of the spring is fixed at the fixed point, and the other end of the spring is fixed at a fixed part in the telescopic device; when the conductive pin is inserted into the lamp holder and extruded, the protrusion on the telescopic device and facing the fixing part triggers the micro switch in the telescopic device, so that the conductive pin is connected with a power supply. The telescopic device is discontinuously sleeved around the conductive needle; when the LED straight tube lamp is not mounted on the lamp holder (or when the LED straight tube lamp is taken out from the lamp holder), the telescopic device moves to the outside of the base due to the tension of the spring. The micro switch resets to disconnect the power supply from the conductive needle.

Further, a micro switch is arranged in the telescopic device, the micro switch is clamped between a first spring and a second spring with different spring coefficients, one end of the second spring is connected with the micro switch, and the other end of the second spring is fixed at a fixing part in the telescopic device; when the conductive pin is inserted into the lamp holder and extruded, the telescopic device triggers the micro switch under the action of the first spring and the second spring, so that the conductive pin is connected with a power supply. The straight tube lamp is only correctly installed, and the conductive pin is connected with the power supply after the micro switch acts; when the electric switch is not mounted on the lamp holder, the micro switch acts due to the elastic force of the spring, so that the conductive pin is disconnected from the power supply.

Further, the first spring can operate under the force of 0.5-1N and the second spring can operate under the force of 3-4N.

Further, the telescopic device is provided with 2 telescopic rods, one end of each telescopic rod is connected with the telescopic device, and the other end of each telescopic rod is inserted into a fixing part in the telescopic device; the telescopic rod is sleeved with a spring; when the conductive pin is inserted into the lamp holder to be extruded, the telescopic rod close to the micro switch triggers the micro switch, so that the conductive pin is connected with a power supply. When the electric switch is not mounted on the lamp holder, the micro switch acts due to the elastic force of the spring, so that the conductive pin is disconnected from the power supply.

Further, a telescopic rod is arranged on the telescopic device, and a spring plate is arranged in the telescopic device; the telescopic rod is provided with a conductive part, the telescopic rod is sleeved with a spring, one end of the spring is fixed on the stop part, and the other end of the spring is fixed on a fixing part in the telescopic device; when the conductive pin is inserted into the lamp holder and pressed, the conductive component is inserted between two elastic sheets in the telescopic device, and the two elastic sheets are electrically connected, so that the conductive pin is connected with a power supply. In the case of not being mounted to the lamp socket, the conductive pin is disconnected from the power supply due to the tension of the spring.

Further, the two elastic sheets are opposite and are spaced, and the shape of the elastic sheet is splayed or horn-shaped.

Further, the telescopic device is provided with a telescopic rod, the end part of the telescopic rod is provided with a spring plate, and the opening of the spring plate faces the direction of the power supply.

Further, a spring is sleeved on the telescopic rod, one end of the spring is fixed on the stop component, and the other end of the spring is fixed on the power supply; when the conductive pin is inserted into the lamp holder and pressed, the opening of the elastic sheet is clamped at the connecting part on the power supply, so that the conductive pin is connected with the power supply.

Further, a telescopic rod is arranged on the telescopic device, a hollow structure is adopted in the middle part of one side of the telescopic rod, which is close to the power supply, and a reed is arranged on the power supply; when the conductive needle is inserted into the lamp holder, the reed is contacted with the contact on the power supply through the hollow structure of the telescopic rod, so that the conductive needle is connected with the power supply. When the socket is not mounted on the lamp holder, the telescopic rod is clamped between the reed and the contact due to the tension of the spring, so that the conductive pin is physically disconnected from the power supply.

Further, the length of the telescopic device extending out of the lamp holder is 20-95% of the length of the conductive needle of the lamp holder.

Further, the two lamp holders are different in size.

Further, when the sizes of the two lamp caps are different, the size of the smaller lamp cap is 30-80% of the size of the larger lamp cap. The flexibility of product design and manufacture can be increased.

The beneficial effects are that: through all setting up same lamp holder in LED straight tube lamp both sides, the lamp holder subassembly can not switch on before installing in the lamps and lanterns, very big reduction installer like this is when installing the LED straight tube lamp, because of the injury that the electric leakage brought, satisfies safety certification standard simultaneously.

Drawings

FIG. 1 is a perspective view showing an LED straight tube lamp according to an embodiment of the present invention;

FIG. 1A is a perspective view showing a lamp cap having different sizes at two ends of a glass tube of an LED straight tube lamp according to another embodiment of the present invention;

FIG. 2 is an exploded perspective view showing the LED straight tube lamp of FIG. 1;

FIG. 3 is a perspective view showing the front and top of the lamp head of an LED straight tube lamp according to an embodiment of the present invention;

FIG. 4 is a plan sectional view showing an internal structure of a glass tube of an LED straight tube lamp according to an embodiment of the present invention along an axial direction, wherein two reflective films extend along a circumferential direction of the glass tube on both sides of a lamp panel, respectively;

FIG. 5 is a plan sectional view showing an internal structure of a glass tube of an LED straight tube lamp according to another embodiment of the present invention along an axial direction, wherein a reflective film extends along a circumferential direction of the glass tube only at one side of a lamp panel;

FIG. 6 is a plan sectional view showing an internal structure of a glass tube of an LED straight tube lamp according to still another embodiment of the present invention along an axial direction, wherein a reflective film is positioned under a lamp panel and extends along a circumferential direction of the glass tube on both sides of the lamp panel;

FIG. 7 is a plan sectional view showing an internal structure of a glass tube of an LED straight tube lamp according to still another embodiment of the present invention along an axial direction, wherein a reflective film is positioned under a lamp panel and extends along a circumferential direction of the glass tube only at one side of the lamp panel;

FIG. 8 is a plan sectional view showing an internal structure of a glass tube of an LED straight tube lamp according to another embodiment of the present invention along an axial direction, wherein two reflective films are respectively adjacent to two sides of a lamp panel and extend along a circumferential direction of the glass tube;

FIG. 9 is a plan view, in cross section, showing an LED straight tube lamp according to an embodiment of the present invention, wherein the lamp panel is a flexible circuit board and the end of the lamp panel climbs over the transition portion of the glass lamp tube and is connected with the output end of the power supply in a welding manner;

FIG. 10 is a plan view, in cross section, showing a flexible circuit board having a double-layer structure of a lamp panel of an LED straight tube lamp according to an embodiment of the present invention;

FIG. 11 is a perspective view showing a bonding pad of a flexible circuit board of a lamp panel of an LED straight tube lamp connected with a printed circuit board of a power supply by welding;

FIG. 12 is a plan view showing the pad arrangement of the flexible circuit board of the lamp panel of the LED straight tube lamp according to an embodiment of the invention;

FIG. 13 is a plan view showing a flexible circuit board of a lamp panel of an LED straight tube lamp according to another embodiment of the invention having 3 pads arranged in a row;

FIG. 14 is a plan view showing a flexible circuit board of a lamp panel of an LED straight tube lamp according to yet another embodiment of the present invention having 3 pads arranged in two rows;

FIG. 15 is a plan view showing a flexible circuit board of a lamp panel of an LED straight tube lamp according to yet another embodiment of the present invention having 4 bonding pads in a row of bonding pads side by side;

FIG. 16 is a plan view showing a flexible circuit board of a lamp panel of an LED straight tube lamp according to still another embodiment of the present invention having 4 pads arranged in two rows;

FIG. 17 is a plan view showing an LED straight tube lamp according to an embodiment of the present invention having holes on pads of a flexible circuit board;

FIG. 18 is a plan view in cross section showing a soldering process of a bonding pad of the flexible circuit board and a printed circuit board of a power supply using the lamp panel of FIG. 17;

FIG. 19 is a plan view in cross section showing a soldering process of a bonding pad of the flexible circuit board and a printed circuit board of a power supply using the lamp panel of FIG. 17, wherein the hole on the bonding pad is close to the edge of the flexible circuit board;

FIG. 20 is a plan view showing a pad of a flexible circuit board of a lamp panel of an LED straight tube lamp according to an embodiment of the present invention having a notch;

FIG. 21 is a plan cross-sectional view showing an enlarged partial cross-section taken along line A-A' in FIG. 20;

FIG. 22 is a perspective view showing a flexible circuit board of a lamp panel of an LED straight tube lamp and a printed circuit board of a power supply combined into a circuit board assembly according to another embodiment of the present invention;

FIG. 23 is a perspective view showing another configuration of the circuit board assembly of FIG. 22;

FIG. 24 is a perspective view showing the mounting structure of the light source of the LED straight tube lamp according to an embodiment of the present invention;

FIG. 25 is a perspective view showing the power supply in an LED straight tube lamp according to an embodiment of the present invention;

FIGS. 26A-F are schematic views showing several configurations of a lamp cap according to an embodiment of the present invention;

fig. 27 is a schematic structural diagram of an LED fluorescent lamp according to an embodiment of the present invention.

Detailed Description

The invention provides a novel LED straight tube lamp based on a glass lamp tube, which aims to solve the problems mentioned in the background art and the problems mentioned above. In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. The following description of various embodiments of the invention is provided for purposes of illustration only and is not intended to represent all embodiments of the invention or to limit the invention to a particular embodiment.

Referring to fig. 1 and 2, in an embodiment of the invention, an LED straight tube lamp is provided, which includes: a glass lamp tube 1, a lamp panel 2 arranged in the glass lamp tube 1, and two lamp caps 3 respectively arranged at two ends of the glass lamp tube 1. The sizes of the lamp holders are the same or different. Referring to fig. 1A, in the embodiments in which the sizes of the lamp caps are different, the size of the smaller lamp cap is preferably 30% to 80% of the size of the larger lamp cap. Furthermore, the glass lamp tube and the lamp cap can be fixed by using high-heat-conductivity silica gel, and the heat conductivity coefficient of the high-heat-conductivity silica gel is more than or equal to 0.7w/m.k (not shown).

Optionally, the glass lamp tube can also be wrapped by a heat shrinkage tube, and the glass lamp tube is insulated. Optionally, the thickness of the heat shrink tube ranges from 20 μm to 200 μm, and preferably ranges from 50 μm to 100 μm (not shown).

Optionally, the inner wall of the glass tube forms a rough surface, and the outer surface of the glass tube is a smooth surface, that is, the roughness of the outer surface of the glass tube is large. The roughness Ra of the inner wall of the glass tube is preferably 0.1-40 μm, and the roughness Ra of the inner wall of the glass tube is preferably 1-20 μm. The surface roughness may be formed by a chemical mechanical processing method such as friction between a tool and a surface of a part during processing, plastic deformation of a surface layer metal during chip separation, high-frequency vibration in a process system, or the like, or by a chemical mechanical processing method such as , and a chemical method such as corrosion method. The depth, the density, the shape and the texture of the trace left on the processed surface are different according to different processing methods and workpiece materials, and the light can be set according to the requirements of LEDs.

Referring to fig. 2 and 3, in other embodiments, the lamp cap provided by the present invention is provided with a hole 304 for heat dissipation. Therefore, heat generated by the power supply module inside the lamp cap can be dissipated without causing the inside of the lamp cap to be in a high-temperature state, so that the reliability of the internal elements of the lamp cap is prevented from being reduced. Further, the holes for heat dissipation on the lamp cap are arc-shaped. Further, the holes for heat dissipation on the lamp cap are three arcs with different sizes. Further, the holes for heat dissipation on the lamp cap are three arcs which gradually change from small to large. Further, the holes for heat dissipation on the lamp cap can be formed by any collocation of the arc shapes.

In other embodiments, the lamp cap includes a power socket (not shown) for mounting the power module.

Referring to fig. 4, the glass lamp 1 of the present embodiment includes a diffusion film 13 in addition to the lamp panel 2 (or flexible circuit board) that is tightly attached to the glass lamp 1, and the light generated by the light source 202 passes through the diffusion film 13 and then passes out of the glass lamp 1. The diffusion film 13 plays a role in diffusing the light emitted from the light source 202, so as long as the light can pass through the diffusion film 13 and then exit the glass lamp tube 1, the diffusion film 13 can be arranged in various forms, for example: the diffusion film 13 may be coated or covered on the inner peripheral surface of the glass bulb 1, or a diffusion coating (not shown) coated on the surface of the light source 202, or a diffusion film covered (or covered) outside the light source 202 as a cover.

Referring to fig. 4 again, when the diffusion film 13 is a diffusion film, it may cover the light source 202 and not contact the light source 202. The general term of the diffusion film is an optical diffusion film or an optical diffusion plate, and one or a combination of several of PS polystyrene, PMMA polymethyl methacrylate, PET (polyethylene terephthalate) and PC (polycarbonate) is usually used for matching diffusion particles, so that a composite material is formed, when light passes through the composite material, a diffusion phenomenon can occur, and the light can be corrected into a uniform surface light source to achieve the effect of optical diffusion, so that the brightness of a glass lamp tube is finally uniformly distributed.

When the diffusion film 13 is a diffusion coating, its main component may be any one of calcium carbonate, calcium halophosphate, and aluminum oxide, or a combination of any two thereof, or a combination of three thereof. When calcium carbonate is used as a main material and matched with a proper solution, the diffusion coating formed by the calcium carbonate has excellent diffusion and light transmission effects (more than 90% of the opportunity is achieved).

In this example, the diffusion coating comprises, when formulated, calcium carbonate, strontium phosphate (e.g., CMS-5000, white powder), a thickener, and ceramic activated carbon (e.g., ceramic activated carbon SW-C, colorless liquid). Specifically, when the diffusion coating uses calcium carbonate as a main material, and is matched with a thickener, ceramic activated carbon and deionized water, the mixture is coated on the inner peripheral surface of the glass lamp tube, and the average thickness of the coating is between 20 and 30 mu m. The diffusion film 13 formed using such a material may have a light transmittance of about 90%, and generally, the light transmittance ranges from about 85% to 96%. In addition, the diffusion film 13 can play a role of electric isolation besides the effect of diffusing light, so that when the glass lamp tube breaks, the risk of electric shock of a user is reduced; meanwhile, the diffusion film 13 can diffuse the light emitted from the light source 202 in all directions, so that the light can illuminate the rear of the light source 202, namely, the side close to the flexible circuit board, thereby avoiding the formation of a dark area in the glass lamp tube 1 and improving the lighting comfort of the space. In addition, when selecting diffusion coatings of different material compositions, another possible embodiment may be used, in which the diffusion film thickness ranges from 200 μm to 300 μm, and the light transmittance is controlled between 92% and 94%, with another effect.

In other embodiments, the diffusion coating may also be made of calcium carbonate as the main material, and a small amount of reflective material (such as strontium phosphate or barium sulfate), thickener, ceramic activated carbon and deionized water may be mixed and coated on the inner peripheral surface of the glass lamp tube, wherein the average thickness of the coating is between 20 and 30 μm. The diffusion film aims to diffuse light, and the diffusion phenomenon is that light rays are reflected by particles in microcosmic view, and the particle size of the reflective materials such as strontium phosphate or barium sulfate is far larger than that of calcium carbonate, so that a small amount of reflective materials are added into the diffusion coating, and the diffusion effect of the light rays can be effectively improved.

Of course, in other embodiments, calcium halophosphate or alumina may be selected as the main material of the diffusion coating, the particle size of the calcium carbonate particles falls between about 2 and 4 μm, and the particle sizes of the calcium halophosphate and alumina particles fall between about 4 and 6 μm and 1 to 2 μm, respectively, for example, when the light transmittance requirement range falls between 85% and 92%, the average thickness of the diffusion coating entirely using calcium carbonate as the main material is about 20 to 30 μm, and when the same light transmittance requirement range (85% to 92%) is about 25 to 35 μm, and the average thickness of the diffusion coating entirely using calcium halophosphate as the main material falls between 10 and 15 μm. If the light transmittance is required to be higher, for example, 92% or more, the diffusion coating layer using calcium carbonate, calcium halophosphate or aluminum oxide as the main material is required to be thinner.

That is, depending on the application of the glass lamp 1, the light transmittance is selected to be different, i.e. the main material of the diffusion coating to be applied, the corresponding thickness, etc. are selected. The higher the light transmittance of the diffusion film, the more noticeable the user sees the particulate feel of the light source.

With continued reference to fig. 4, further, a reflective film 12 is further disposed on the inner peripheral surface of the glass lamp tube 1, and the reflective film 12 is disposed around the lamp panel 2 having the light source 202 and occupies a part of the inner peripheral surface of the glass lamp tube 1 in the circumferential direction. As shown in fig. 4, the reflective film 12 extends along the circumferential direction of the glass tube on both sides of the lamp panel 2, and the lamp panel 2 is located substantially at the middle position of the reflective film 12 in the circumferential direction. The arrangement of the reflective film 12 has effects in two aspects, on the one hand, when the glass lamp tube 1 is seen from the side (X direction in the drawing), the light source 202 is not directly seen due to the blocking of the reflective film 12, thereby reducing visual discomfort caused by the sense of particles; on the other hand, the light emitted by the light source 202 passes through the reflection effect of the reflection film 12, so that the divergence angle of the glass lamp tube can be controlled, and the light rays are more irradiated towards the direction without the reflection film, so that the LED straight tube lamp obtains the same irradiation effect with lower power, and the energy saving performance is improved.

Specifically, the reflective film 12 is attached to the inner peripheral surface of the glass lamp tube 1, and an opening 12a corresponding to the lamp panel 2 is formed in the reflective film 12, and the size of the opening 12a should be consistent with the lamp panel 2 or slightly larger than the lamp panel 2 for accommodating the lamp panel 2 with the light source 202. When in assembly, the lamp panel 2 (or flexible circuit board) with the light source 202 is arranged on the inner peripheral surface of the glass lamp tube 1, and then the reflecting film 12 is attached on the inner peripheral surface of the glass lamp tube, wherein the holes 12a of the reflecting film 12 are in one-to-one correspondence with the lamp panel 2, so that the lamp panel 2 is exposed outside the reflecting film 12.

In one embodiment, the reflectivity of the reflective film 12 is at least greater than 85%, and the reflective effect is better, and generally above 90%, preferably above 95%, to obtain a more desirable reflective effect. The length of the reflective film 12 extending in the circumferential direction of the glass lamp tube 1 occupies 30% to 50% of the entire circumference of the glass lamp tube 1, that is, the ratio between the circumferential length of the reflective film 12 and the circumference of the inner circumferential surface of the glass lamp tube 1 in the circumferential direction of the glass lamp tube 1 ranges from 0.3 to 0.5. In the present invention, the lamp panel 2 is disposed at the middle of the reflective film 12 in the circumferential direction, that is, the reflective films 12 on both sides of the lamp panel 2 have substantially the same area, as shown in fig. 4. The material of the reflecting film can be any one of PET, strontium phosphate and barium sulfate, or any two of them or three of them, the reflecting effect is better, the thickness range is 140-350 μm, and the effect is better, generally 150-220 μm. As shown in fig. 5, in other embodiments, the reflective film 12 may be disposed on only one side of the lamp panel 2, that is, the reflective film 12 contacts one side of the lamp panel 2 in the circumferential direction, and the Zhou Xiangshan side thereof occupies the circumference of the glass lamp tube 1 by 0.3 to 0.5. Alternatively, as shown in fig. 6 and 7, the reflective film 12 may be formed without forming an opening, the reflective film 12 may be directly attached to the inner peripheral surface of the glass lamp 1 during assembly, and then the lamp panel 2 with the light source 202 may be fixed to the reflective film 12, where the reflective film 12 may extend in the circumferential direction of the glass lamp on one side or both sides of the lamp panel 2.

The various types of reflective films 12 and the various types of diffusion films 13 described in the above embodiments may be arbitrarily combined to achieve individual reflection, individual diffusion or both of the optical effects of reflection and diffusion. For example, only the reflection film 12 may be provided, and the diffusion film 13 may not be provided, as shown in fig. 6, 7, and 8.

In other embodiments, the flexible circuit board may have a wider width, and the circuit board itself may function as the reflective film 12 at the widened portion because the surface of the circuit board includes a circuit protection layer of ink material that has a function of reflecting light. Preferably, the ratio of the length of the flexible circuit board extending in the circumferential direction of the glass bulb 2 to the circumference of the inner circumferential surface of the glass bulb 2 is in the range of 0.3 to 0.5. The flexible circuit board can be coated with a circuit protection layer, which can be an ink material with reflection increasing function, and the widened flexible circuit board extends circumferentially from the light source as a starting point, so that the light of the light source can be concentrated by the widened part.

In other embodiments, the inner peripheral surface of the glass tube may be entirely coated with the diffusion coating or may be partially coated with the diffusion coating (where the reflective film 12 is present, but in either case, the diffusion coating is preferably applied to the outer surface of the end region of the glass tube 1 so as to make the adhesion between the lamp cap 3 and the glass tube 1 stronger.

It should be noted that, in the above embodiments of the present invention, one of the group consisting of a diffusion coating, a diffusion film, a reflective film and an adhesive film may be selected for the optical treatment of the light emitted from the light source of the present invention.

With continued reference to fig. 2, in an embodiment of the present invention, the LED straight tube lamp further includes an adhesive sheet 4, a lamp panel insulation film 7, and a light source film 8. The lamp panel 2 is adhered to the inner peripheral surface of the glass lamp tube 1 via an adhesive sheet 4. The adhesive sheet 4 may be silica gel, and may be several pieces as shown in the drawings, or a long piece, without limitation. Various forms of adhesive sheet 4, various forms of lamp panel insulating sheet 7 and various forms of light source sheet 8 may be combined with each other to constitute different embodiments of the present invention.

The lamp panel insulating film 7 is coated on the surface of the lamp panel 2 facing the light source 202 so that the lamp panel 2 is not exposed, thereby playing an insulating role in isolating the lamp panel 2 from the outside. The through hole 71 corresponding to the light source 202 is reserved during gluing, and the light source 202 is arranged in the through hole 71. The lamp panel insulating film 7 comprises vinyl polysiloxane, hydrogen polysiloxane and aluminum oxide. The thickness of the lamp panel insulating film 7 ranges from 100 μm to 140 μm (micrometers). If it is less than 100. Mu.m, the insulation effect is insufficient, and if it is more than 140. Mu.m, the waste of material is caused.

The light source film 8 is coated on the surface of the light source 202. The color of the light source film 8 is transparent to ensure light transmittance. After being applied to the surface of the light source 202, the shape of the light source film 8 may be granular, strip-like or sheet-like. Among these parameters of the light source film 8 are refractive index, thickness, etc. The allowable range of the refractive index of the light source film 8 is 1.22-1.6, and if the refractive index of the light source film 8 is the open root number of the refractive index of the light source 202 shell, or the refractive index of the light source film 8 is plus or minus 15% of the open root number of the refractive index of the light source 202 shell, the light transmittance is better. The light source housing herein refers to a housing that accommodates the LED die (or chip). In the present embodiment, the refractive index of the light source film 8 ranges from 1.225 to 1.253. The light source film 8 allows a thickness range of 1.1mm to 1.3mm, and if less than 1.1mm, the light source 202 will not be covered, and if more than 1.3mm, the light transmittance will be reduced, and the material cost will be increased.

When in assembly, the light source film 8 is coated on the surface of the light source 202; then, the lamp panel insulating film 7 is coated on one side surface of the lamp panel 2; fixing the light source 202 on the lamp panel 2; then, the surface of the lamp panel 2 opposite to the light source 202 is stuck and fixed on the inner peripheral surface of the glass lamp tube 1 through the adhesive sheet 4; finally, the lamp cap 3 is fixed at the end region of the glass lamp tube 1, and the light source 202 is electrically connected with the power supply 5. Or as shown in fig. 9, the flexible circuit board 2 is welded with the power supply 5 through a free part 21, or the lamp board 2 is electrically connected with the power supply 5 by adopting a traditional wire bonding mode, so as to form a complete LED straight tube lamp.

In this embodiment, the lamp panel 2 is fixed on the inner peripheral surface of the glass lamp tube 1 by the adhesive sheet 4, so that the lamp panel 2 is attached to the inner peripheral surface of the glass lamp tube 1, thus the light emitting angle of the whole LED straight tube lamp can be increased, the viewing angle can be enlarged, and the viewing angle can be generally more than 330 degrees by setting. By coating the lamp panel 2 with the lamp panel insulating film 7 and coating the light source 202 with the insulating light source film 8, the insulation treatment of the whole lamp panel 2 is realized, so that even if the glass lamp tube 1 breaks, electric shock accidents can not occur, and the safety is improved.

Further, an adhesive film (not shown) may be coated on the inner or outer circumferential surface of the glass lamp tube 1 for isolating the outside and the inside of the glass lamp tube 1 after the glass lamp tube 1 is broken. In this embodiment, an adhesive film is coated on the inner peripheral surface of the glass tube 1.

The adhesive film comprises vinyl-terminated silicone oil, hydrogen-containing silicone oil, dimethylbenzene and calcium carbonate. Wherein, the dimethylbenzene is an auxiliary material, and when the adhesive film is coated on the inner peripheral surface of the glass lamp tube 1 and solidified, the dimethylbenzene volatilizes, and the dimethylbenzene mainly has the function of adjusting the viscosity so as to adjust the thickness of the adhesive film.

In one embodiment, the adhesive film has a thickness in the range of 100 μm to 140 μm. If the thickness of the bonding film is less than 100 mu m, the explosion-proof performance is insufficient, when the glass is broken, the whole glass lamp tube can be cracked, and if the thickness is more than 140 mu m, the light transmittance can be reduced, and the material cost is increased. If the requirements for explosion-proof performance and light transmittance are relaxed, the thickness range of the adhesive film may be widened to 10 μm to 800 μm.

In this embodiment, since the glass lamp tube is internally coated with the adhesive film, after the glass lamp tube is broken, the adhesive film can adhere fragments together and does not form a through hole penetrating through the inside and the outside of the glass lamp tube, thereby preventing a user from contacting with the charged body inside the glass lamp tube 1 to avoid electric shock accidents, and meanwhile, the adhesive film adopting the proportion also has the functions of diffusing light and transmitting light, and improves the light emitting uniformity and the light transmittance of the whole LED straight lamp. The adhesive film of this embodiment can be used in combination with the adhesive sheet 4, the lamp panel insulating sheet 7 and the light source sheet 8 described above to constitute various embodiments of the present invention. It should be noted that, when the lamp panel 2 is a flexible circuit board, the adhesive film may not be provided.

Further, the lamp panel 2 of the present embodiment adopts a flexible circuit board, so that when the glass lamp tube 1 is broken, the broken glass lamp tube 1 cannot be supported to keep in a straight tube state, so as to inform a user that the LED straight tube lamp cannot be used, and avoid electric shock accidents. Therefore, when the flexible circuit soft board is adopted, the electric shock problem caused by the breakage of the glass tube can be relieved to a certain extent. The lamp board 2 is a flexible circuit board and has a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer and a dielectric layer.

Referring to fig. 10, in an embodiment, the flexible circuit board as the lamp panel 2 includes a single-layer patterned metal circuit layer 2a with a conductive effect, and the light source 202 is disposed on the single-layer patterned metal circuit layer 2a and is electrically connected to the power supply through the single-layer patterned metal circuit layer 2 a. Referring to fig. 10, in the present embodiment, the flexible circuit board may further include a dielectric layer 2b stacked on the single-layer patterned metal circuit layer 2a, wherein the dielectric layer 2b and the single-layer patterned metal circuit layer 2a have the same area, and the single-layer patterned metal circuit layer 2a is disposed on a surface opposite to the dielectric layer 2b for disposing the light source 202. The single-layer patterned metal circuit layer 2a is electrically connected to the power source 5 for passing a direct current. The dielectric layer 2b is adhered to the inner peripheral surface of the glass bulb 1 via an adhesive sheet 4 on the surface opposite to the single-layer patterned metal wiring layer 2 a.

In other embodiments, the outer surfaces of the single-layer patterned metal circuit layer 2a and the dielectric layer 2b may be coated with a circuit protection layer, which may be an ink material, having the functions of solder resist and reflection enhancement. Alternatively, the flexible circuit board may be a single-layer structure, that is, only composed of a single-layer patterned metal circuit layer 2a, and then a circuit protection layer covering the ink material may be or may not be formed on the surface of the single-layer patterned metal circuit layer 2 a. Either a single patterned metal wiring layer 2a structure or a two-layer structure (a single patterned metal wiring layer 2a and a dielectric layer 2 b) can be used together with the circuit protection layer. The circuit protection layer may be provided on one side surface of the flexible circuit board, for example, only on one side having the light source 202. It should be noted that the flexible circuit board is of a single-layer patterned metal circuit layer structure 2a or a two-layer structure (a single-layer patterned metal circuit layer 2a and a dielectric layer 2 b), which is obviously more flexible and pliable than the conventional three-layer flexible substrate (two circuit layers with one dielectric layer therebetween), so that the flexible circuit board can be matched with a glass lamp tube 1 with a special shape (for example, a non-straight tube lamp), and can be tightly attached to the wall of the glass lamp tube 1. In addition, the flexible circuit flexible board is attached to the wall of the glass lamp tube in a better configuration, and the smaller the number of layers of the flexible circuit flexible board is, the better the heat dissipation effect is, the lower the material cost is, the more environment-friendly is, and the flexibility effect is also improved.

In other embodiments, the length of the flexible circuit board as the lamp panel 2 is longer than the length of the glass lamp tube.

With continued reference to fig. 2, the lamp panel 2 is provided with a plurality of light sources 202, the lamp cap 3 is provided with a power supply 5, and the light sources 202 are electrically connected with the power supply 5 through the lamp panel 2. In the embodiments of the present invention, the power supply 5 may be a single body (i.e. all power supply modules are integrated in one component) and is disposed in the lamp cap 3 at one end of the glass lamp tube 1; alternatively, the power supply 5 may be divided into two parts, called a double body (i.e. all power supply modules are respectively arranged in two parts), and the two parts are respectively arranged in the lamp caps 3 at two ends of the glass lamp tube.

The power supply can be formed in multiple modes, for example, the power supply can be a module after encapsulation molding, specifically, a high-heat-conductivity silica gel (the heat conductivity coefficient is more than or equal to 0.7 w/m.k) is used, and the power supply module is encapsulated and molded through a die to obtain the power supply. Alternatively, the power supply can be formed without pouring sealant, and the exposed power supply module is directly placed inside the lamp cap, or the exposed power supply module is wrapped by a traditional heat shrinkage tube and then placed inside the lamp cap 3. In other words, in the embodiments of the present invention, the power supply 5 may be in the form of a single-chip printed circuit board mounted power module as shown in fig. 9, or may be in the form of a single-body module as shown in fig. 25.

Referring to fig. 2 in combination with fig. 25, in one embodiment, a male pin 51 is provided at one end of the power supply 5, a metal pin 52 is provided at the other end, a female pin 201 is provided at the end of the lamp panel 2, and a hollow conductive pin 301 for connecting to an external power supply is provided on the lamp cap 3. The male plug 51 of the power supply 5 is inserted into the female plug 201 of the lamp panel 2, and the metal pin 52 is inserted into the hollow conductive pin 301 of the lamp cap 3. The male plug 51 and the female plug 201 correspond to an adapter for electrically connecting the power supply 5 and the lamp panel 2. After the metal pins 52 are inserted into the hollow conductive pins 301, the hollow conductive pins 301 are impacted by an external punching tool, so that the hollow conductive pins 301 are slightly deformed, thereby fixing the metal pins 52 on the power supply 5 and realizing electrical connection. When energized, current passes through the hollow conductive pin 301, the metal pin 52, the male pin 51, and the female pin 201 in order to the lamp panel 2, and through the lamp panel 2 to the light source 202. However, the structure of the power supply 5 is not limited to the modular form shown in fig. 25. The power supply 5 may be a printed circuit board with a power module, and is electrically connected to the lamp panel 2 by the male plug 51 and the female plug 201. In another embodiment, the power supply may have a female plug at one end, a male plug at the end of the lamp panel, and the power supply is electrically connected with the lamp panel by a female plug and male plug connection method.

In other embodiments, any type of electrical connection between the power source 5 and the lamp panel 2 may be performed by using a conventional wire bonding method instead of the male plug 51 and the female plug 201, i.e. a conventional metal wire is used to electrically connect one end of the metal wire with the power source and the other end of the metal wire with the lamp panel 2. Further, the metal wire may be covered with an insulating sleeve to protect the user from electric shock. However, the wire bonding connection mode may have a problem of breakage during transportation and is slightly inferior in quality.

In other embodiments, the electrical connection between the power source 5 and the lamp panel 2 may be directly connected by riveting, soldering, welding or wire bonding. In accordance with the fixing manner of the lamp panel 2, one side surface of the flexible circuit board is adhered and fixed to the inner peripheral surface of the glass lamp tube 1 by the adhesive sheet 4, and both ends of the flexible circuit board may be optionally fixed or not fixed to the inner peripheral surface of the glass lamp tube 1.

If both ends of the flexible circuit board are fixed on the inner peripheral surface of the glass lamp tube 1, it is preferable to provide the female plug 201 on the flexible circuit board, and then insert the male plug 51 of the power supply 5 into the female plug 201 to achieve electrical connection.

If the two ends of the lamp panel 2 along the axial direction of the glass lamp tube 1 are not fixed on the inner peripheral surface of the glass lamp tube 1, if the two ends are connected by a wire, the wire is likely to break because the two ends are free in the subsequent moving process and shake easily in the subsequent moving process. Therefore, the connection mode between the lamp panel 2 and the power supply 5 is preferably selected as welding. Specifically, referring to fig. 9, the lamp panel 2 can be directly climbed and welded on the output end of the power supply 5, so that the use of wires is avoided, and the stability of the product quality is improved. At this time, the lamp panel 2 does not need to be provided with a female plug 201, and the output end of the power supply 5 does not need to be provided with a male plug 51.

As shown in fig. 11, a specific method may be to leave a power supply pad a at the output end of the power supply 5, and leave tin on the power supply pad a, so that the thickness of tin on the pad is increased, and welding is convenient, correspondingly, a light source pad b is also left on the end of the lamp panel 2, and the power supply pad a at the output end of the power supply 5 and the light source pad b of the lamp panel 2 are welded together. When the plane where the bonding pad is located is defined as the front surface, the bonding pads on the front surfaces of the lamp panel 2 and the power supply 5 are connected most firmly, but the welding pressure head must be pressed on the back surface of the lamp panel 2 during welding, and the welding tin is heated through the lamp panel 2, so that the problem of reliability is relatively easy to occur. If, as shown in fig. 17, a hole is formed in the middle of the light source pad b on the front side of the lamp panel 2, and then the light source pad b is stacked on the power source pad a on the front side of the power source 5 with the front side facing upwards for welding, the welding pressure head can directly heat and melt solder, and the welding pressure head is easy to realize in practical operation.

As shown in fig. 11, in the above embodiment, the flexible circuit board as the lamp panel 2 is mostly fixed on the inner peripheral surface of the glass lamp tube 1, only the lamp panel 2, which is not fixed on the inner peripheral surface of the glass lamp tube 1, is formed with a free portion 21 only at both ends, which is not fixed on the inner peripheral surface of the glass lamp tube 1, and the lamp panel 2 is fixed on the inner peripheral surface of the glass lamp tube 1. The free portion 21 has the pad b described above. During assembly, the free part 21 and one end of the power supply 5 welded to each other drive the free part 21 to shrink toward the inside of the glass tube 1. The flexible circuit board as the lamp panel 2 may be directly electrically connected to the power supply 5 without any free portion through a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer and a dielectric layer. In this embodiment, when the lamp panel 2 and the power supply 5 are connected, the surfaces of the pads b and a and the light source 202 on the lamp panel face the same direction, and the through hole e as shown in fig. 17 is formed on the pad b on the lamp panel 2, so that the pad b and the pad a are mutually communicated. When the free portion 21 of the lamp panel 2 is deformed by shrinking toward the inside of the glass lamp tube 1, the solder connection between the printed circuit board of the power supply 5 and the lamp panel 2 has a lateral tension on the power supply 5. Further, the solder connection between the printed circuit board of the power supply 5 and the lamp panel 2 has a downward pull on the power supply 5, compared to the case where the pads a of the power supply 5 and the pads b of the lamp panel 2 face each other. This downward pulling force results from the solder in the through hole e to form a more reinforced and secure electrical connection between the power source 5 and the lamp panel 2.

As shown in FIG. 12, the light source pad b of the lamp panel 2 is two unconnected pads, which are electrically connected with the positive and negative electrodes of the light source 202 respectively, and the size of the pads is about 3.5X2 mm ² The printed circuit board of the power supply 5 is also provided with a corresponding bonding pad, and tin is reserved above the bonding pad for being convenient for automatic welding of a welding machine, wherein the thickness of the tin can be 0.1 to 0.7mm, preferably 0.3 to 0.5mm, and more preferably 0.4 mm. An insulation hole c can be arranged between the two bonding pads to avoid electrical short circuit caused by welding of the two bonding pads together in the welding process, and a positioning hole d can be arranged behind the insulation hole c to enable an automatic welding machine to accurately judge the correct position of the light source bonding pad b.

At least one light source pad b of the lamp panel is electrically connected with the anode and the cathode of the light source 202 respectively. In other embodiments, the number of light source pads b may be more than one, such as 2, 3, 4 or more than 4, for compatibility and scalability for subsequent use. When the number of the bonding pads is 1, the two corresponding ends of the lamp panel are respectively and electrically connected with the power supply to form a loop, and the electronic component can be replaced by, for example, an inductor instead of a capacitor to be used as a current stabilizing component. As shown in fig. 13 to 17, when the number of pads is 3, the 3 rd pad may be used as a ground, and when the number of pads is 4, the 4 th pad may be used as a signal input terminal. Correspondingly, the number of the power supply pads a is the same as the number of the light source pads b. When the number of bonding pads is more than 3, the bonding pads can be arranged in a row or two rows, and the bonding pads are arranged at proper positions according to the size of the accommodating area in actual use, so long as the bonding pads are not electrically connected with each other to cause short circuit. In other embodiments, if part of the circuit is fabricated on the flexible circuit board, the light source pads b can be individually one, and the smaller the number of the pads, the more flow is saved in terms of process; the more the number of bonding pads, the more the flexible circuit board and the power output end are electrically connected and fixed.

As shown in fig. 17, in other embodiments, the inside of the light source pad b may have a structure of a soldering perforation e, and the diameter of the soldering perforation e may be 1 to 2mm, preferably 1.2 to 1.8mm, and most preferably 1.5mm, so that the solder for soldering is not easy to pass through when too small. When the power source pad a of the power source 5 is soldered with the light source pad b of the lamp panel 2, the solder for soldering can pass through the soldering perforation e, and then is accumulated above the soldering perforation e to be cooled and condensed, so as to form a solder ball structure g with a diameter larger than that of the soldering perforation e, and the solder ball structure g can function as a nail, besides being fixed through the tin between the power source pad a and the light source pad b, the stability of the electrical connection can be enhanced due to the action of the solder ball structure g.

As shown in fig. 18 to 19, in other embodiments, when the distance between the soldering hole e of the light source pad b and the edge of the lamp panel 2 is less than or equal to 1mm, solder passes through the hole e and is deposited on the edge above the hole, and excessive solder flows back down from the edge of the lamp panel 2 and then condenses with the solder on the power source pad a, so that the structure is just like a rivet to firmly pin the lamp panel 2 on the circuit board of the power source 5, and the reliable electrical connection function is provided. As shown in fig. 20 and 21, in other embodiments, the soldering notch f replaces the soldering hole e, the soldering hole of the bonding pad is at the edge, the soldering tin electrically connects and fixes the power source bonding pad a and the light source bonding pad b through the soldering notch f, the tin is easier to climb up the light source bonding pad b to be accumulated around the soldering notch f, more tin forms a solder ball with a diameter larger than the soldering notch f after cooling and condensing, and the fixing capability of the electrical connection structure is enhanced by the solder ball structure. In this embodiment, the solder functions like a C-shaped nail because of the design of the solder gap.

Referring to fig. 22 and 23, in other embodiments, the lamp panel 2 and the power supply 5 fixed by soldering may be replaced by a circuit board assembly 25 mounted with a power supply module 250. The circuit board assembly 25 has a long circuit board 251 and a short circuit board 253, the long circuit board 251 and the short circuit board 253 are attached to each other and fixed by adhesion, and the short circuit board 253 is located near the periphery of the long circuit board 251. The short circuit board 253 has a power module 25 thereon, and integrally forms a power source. The short circuit board 253 is made of a longer circuit board 251 and is hard so as to support the power module 250.

The long circuit board 251 may be the flexible circuit board or the flexible substrate as the lamp panel 2, and has the single-layer patterned metal circuit layer 2a shown in fig. 10. The single-layer patterned metal circuit layer 2a of the lamp panel 2 and the power module 250 can be electrically connected in different ways according to practical use. As shown in fig. 22, the power module 250 and the long circuit board 251 are both disposed on the same side of the short circuit board 253, and the power module 250 is directly electrically connected to the long circuit board 251. As shown in fig. 23, the power module 250 and the long circuit board 251 are respectively located at two sides of the short circuit board 253, and the power module 250 is electrically connected to the single-layer patterned metal circuit layer 2a of the lamp panel 2 through the short circuit board 253.

As shown in fig. 22, in an embodiment, the circuit board assembly 25 omits the case that the lamp panel 2 and the power supply 5 are to be fixed by soldering in the previous embodiment, but the long circuit board 251 and the short circuit board 253 are first adhered and fixed, and then the power supply module 250 and the single-layer patterned metal circuit layer 2a of the lamp panel 2 are electrically connected. In addition, the lamp panel 2 is not limited to one or two layers of circuit boards as described above. The light source 202 is disposed on the single-layer patterned metal circuit layer 2a, and is electrically connected to the power source 5 through the single-layer patterned metal circuit layer 2 a. As shown in fig. 23, in another embodiment, the circuit board assembly 25 has a long circuit board 251 and a short circuit board 253, the long circuit board 251 may be a flexible circuit board or a flexible substrate of the above-mentioned lamp board 2, the lamp board 2 includes a single-layer patterned metal circuit layer 2a and a dielectric layer 2b, the dielectric layer 2b and the short circuit board 253 are fixedly connected in a splicing manner, and then the single-layer patterned metal circuit layer 2a is attached to the dielectric layer 2b and extends to the short circuit board 253. The above embodiments do not depart from the application scope of the circuit board assembly 25 of the present invention.

In the above embodiments, the short circuit board 253 has a length of about 15 mm to 40 mm, preferably 19 mm to 36 mm, and the long circuit board 251 has a length of 800 mm to 2800 mm, preferably 1200 mm to 2400 mm. The ratio of the short circuit board 253 to the long circuit board 251 may be 1:20 to 1:200.

In addition, in the foregoing embodiment, when the lamp panel 2 and the power supply 5 are fixed by welding, the end of the lamp panel 2 is not fixed on the inner peripheral surface of the glass lamp tube 1, and the power supply 5 cannot be safely fixed and supported, in other embodiments, if the power supply 5 is to be fixed separately in the lamp cap at the end region of the glass lamp tube 1, the lamp cap is relatively long, and the effective light emitting area of the glass lamp tube 1 is reduced.

Referring to fig. 24, in various embodiments of the present invention, the light source 202 may be further modified to include a bracket 202b having a recess 202a, and an LED die (or chip) 18 disposed in the recess 202 a. The recess 202a may be one or more. The grooves 202a are filled with phosphor that covers the LED die (or chip) 18 to perform the function of color conversion. It is noted that, compared to the square shape with the ratio of the length to the width of the conventional LED die (or chip) being approximately 1:1, the ratio of the length to the width of the LED die (or chip) 18 used in the embodiments of the present invention may be 2:1 to 10:1, and the ratio of the length to the width of the LED die (or chip) 18 used in the embodiments of the present invention is preferably 2.5:1 to 5:1, and the optimal range is 3:1 to 4.5:1, so that the length direction of the LED die (or chip) 18 is aligned along the length direction of the glass lamp tube 1, thereby improving the problems of the average current density of the LED die (or chip) 18 and the overall light-emitting shape of the glass lamp tube 1.

Referring to fig. 24 again, the bracket 202b of the at least one light source 202 has a first sidewall 15 arranged along the length direction of the glass tube and extending along the width direction of the glass tube, and a second sidewall 16 arranged along the width direction of the glass tube and extending along the length direction of the glass tube, wherein the first sidewall 15 is lower than the second sidewall 16, and two first sidewalls 15 and two second sidewalls surround the groove 202a. The first sidewall 15 "extends along the width direction of the glass lamp tube 1" so long as the extending trend is substantially the same as the width direction of the glass lamp tube 1, and is not required to be strictly parallel to the width direction of the glass lamp tube 1, for example, the first sidewall 15 may have a slight angle difference from the width direction of the glass lamp tube 1, or the first sidewall 15 may be various shapes such as a folded line shape, an arc shape, and a wave shape; the second side wall 16 "extends along the length direction of the glass lamp tube 1" so long as the extending direction is substantially the same as the length direction of the glass lamp tube 1, and is not required to be strictly parallel to the length direction of the glass lamp tube 1, for example, the second side wall 16 may have a slight angle difference from the length direction of the glass lamp tube 1, or the second side wall 16 may have various shapes such as a fold line shape, an arc shape, and a wave shape. In various embodiments of the present invention, a row of light sources may allow the side walls of the rack having one or more light sources therein to be arranged or extended in other ways.

In the embodiments of the present invention, the first side wall 15 is lower than the second side wall 16, so that the light can easily spread out over the support 202b, and the uncomfortable feeling of particles can not be generated in the Y direction through the design of the interval with moderate density, and in the embodiments of the present invention, if the first side wall is not lower than the second side wall, the light sources 202 in each row are arranged more closely, so as to reduce the particle feeling and improve the efficiency. On the other hand, when the user views the glass tube from the side of the glass tube, for example, in the X-direction, the second side wall 16 may block the user's line of sight from directly seeing the light source 202 to reduce the discomfort of the particles.

Referring again to fig. 24, in various embodiments of the present invention, the inner surface 15a of the first sidewall 15 may be configured as a slope, and the slope is configured to facilitate the light to be emitted through the slope relative to the inner surface 15a being configured to be perpendicular to the bottom wall. The slope may comprise a plane or an arc or the slope may be a combination of a plane and an arc. When a flat surface is used, the slope of the flat surface is between about 30 degrees and 60 degrees. That is, the angle between the slope in planar form and the bottom wall of groove 202a ranges from 120 degrees to 150 degrees. Preferably, the slope of the plane is between about 15 degrees and 75 degrees, that is, the angle between the slope in the form of a plane and the bottom wall of groove 202a ranges between 105 degrees and 165 degrees.

In the embodiments of the present invention, the light sources 202 in one glass tube 1 have a plurality of light sources 202, and the plurality of light sources 202 may be arranged in one or more columns, and each column of light sources 202 is arranged along the axial direction (Y direction) of the glass tube 1. When the plurality of light sources 202 are arranged in a row along the length direction of the glass tube, all the second side walls 16 on the same side in the width direction of the glass tube are on the same straight line in the bracket 202b of the plurality of light sources 202, that is, the second side walls 16 on the same side form a wall-like structure to block the user's sight line from directly seeing the light sources 202. When the plurality of light sources 202 are arranged in a plurality of rows along the length direction of the glass light tube 1, and the plurality of light sources 202 are arranged along the axial direction (Y direction) of the glass light tube 1, only the support 202b of the light sources 202 in the two outermost rows (i.e., the two rows of light sources 202 adjacent to the wall of the glass light tube) has two first side walls 15 arranged along the length direction (Y direction) of the glass light tube 1 and two second side walls 16 arranged along the width direction (X direction) of the glass light tube 1, that is, the support 202b of the light sources 202 in the two outermost rows has a first side wall 15 extending along the width direction (X direction) of the glass light tube 1, and the second side wall 16 extending along the length direction (Y direction) of the glass light tube 1, and the support 202b of the light sources 202 in other rows between the two rows of light sources 202 is not limited, for example, and each support 202b of the light sources 202 in the middle row (third row) may have two first side walls 15 arranged along the length direction (Y direction) of the glass light tube 1 and two second side walls 16 arranged along the width direction (X direction) of the glass light tube 1, or each support 202b of the two side walls 202b may have a second side wall 16 arranged along the width direction (X direction) of the glass light tube 1 and the second side walls (X direction) may be reduced, for example, and the user may feel comfortable when the user can see the two side walls 202b and the light sources in the glass light sources are arranged along the second side walls and the second side wall and the side wall. For the two outermost rows of light sources, other arrangements or extensions of the side walls of the rack in which one or more light sources are located are also allowed.

In view of the above, when the plurality of light sources 202 are arranged in a row along the length direction of the glass tube, the second side walls 16 of the brackets 202b of all the light sources 202 need to be respectively positioned on the same straight line, i.e. the second side walls 16 on the same side form a wall-like structure, so as to block the user's sight line from directly seeing the light sources 202. When the plurality of light sources 202 are arranged in a plurality of rows along the length direction of the glass tube, the outermost second side walls 16 of the brackets 202b of all the light sources 202 of the two rows along the outermost side in the width direction of the glass tube need to be positioned on two straight lines, respectively, to form a structure similar to a double-sided wall, so as to block the user's sight line from directly seeing the light sources 202; the arrangement and extension of the side walls of the middle row or rows of light sources 202 are not required, and the arrangement and extension of the side walls of the middle row or rows of light sources 202 can be the same as those of the two outermost rows of light sources 202, or other different arrangements can be adopted.

Various embodiments of the structure of the lamp cap with the protection switch of the present invention are described in detail below.

Fig. 26A is a schematic structural diagram of a lamp cap according to an embodiment of the invention. A base 3 comprising: the LED fluorescent lamp comprises a lamp holder body 300, a power supply 5, a conductive pin 301 arranged at the top end of the lamp holder body 300, a telescopic device 332, a micro switch 334, a lamp holder cover and a lamp holder, wherein one end of the telescopic device extends out of the lamp holder and can move along the direction of the conductive pin 301 (namely the axial direction of the LED fluorescent lamp);

The expansion device 332 is provided with a stop part 337, and the movement amplitude of the expansion device 332 (namely the amplitude of the expansion device 332 extending out of the lamp holder body) is controlled by the stop part 337; the telescopic device 332 is provided with 2 telescopic rods 335, one end of each telescopic rod 335 is connected to the telescopic device 332, the other end of each telescopic rod 335 is inserted into the fixed part 336, and one telescopic rod 335 is close to the micro switch 334; the telescopic rod 335 is sleeved with a spring 333. When the lamp cap 3 is properly mounted to the lamp base, the conductive pin 301 is inserted into the lamp base (not shown); the telescopic device 332 moves along the direction opposite to the direction that the conductive needle 301 is inserted into the lamp holder due to the extrusion of the lamp holder, and one telescopic rod 335 close to the micro switch 334 triggers the micro switch 334, so that the conductive needle 301 is connected with the power supply 5.

The micro switch can be arranged on the lamp holders connected with the two sides of the LED fluorescent lamp. Therefore, the damage caused by leakage current when an installer installs the LED fluorescent lamp is greatly reduced. And the requirements of security certification can be met.

When the LED fluorescent lamp is not mounted to the lamp socket (or when the LED fluorescent lamp is taken out of the lamp socket), the telescopic device 332 moves to the outside of the cap body due to the tension of the spring. Micro switch 334 resets to disconnect power supply 5 from conductive pin 301.

Fig. 26B is a schematic structural diagram of a lamp cap according to another embodiment of the invention. A base 3 comprising:

the lamp holder body 300, a power supply 5 (not shown), a conductive pin 301a arranged at the top end of the lamp holder, a telescopic device 332 with one end capable of moving along the direction of the conductive pin 301a (namely the axial direction of the LED fluorescent lamp) extending out of the lamp holder, and a micro switch 334; the expansion device 332 is provided with a stop part 337, and the movement amplitude of the expansion device 332 (namely the amplitude of the expansion device 332 extending out of the lamp holder body) is controlled by the stop part 337; the stopper 337 is also provided with a fixing point for the fixing spring 333. The spring 333 is fixed at one end to the fixed point and at the other end to the fixed portion 336. When the base 3 is properly mounted to the lamp holder, the conductive pin 301a is inserted into the lamp holder (not shown); by being pressed by the lamp socket, the telescopic device 332 moves in the direction opposite to the direction in which the conductive pin 301a is inserted into the lamp socket, and the protrusion 338 on the telescopic device 332 facing the fixing portion 336 triggers the micro switch 334, so that the conductive pin 301a is connected with the power supply 5.

The micro switch can be arranged on the lamp holders connected with the two sides of the LED fluorescent lamp. In the above-described embodiment, the telescopic device 332 is intermittently sleeved around the conductive needle 301 a.

In the case where the LED fluorescent lamp is not mounted to the lamp socket (or when the LED fluorescent lamp is taken out from the lamp socket), the telescopic device 332 moves to the outside of the cap due to the spring tension. Micro switch 334 resets, and power supply 5 is disconnected from conductive pin 301 a.

Fig. 26C is a schematic structural diagram of a lamp cap structure according to another embodiment of the invention. A base 3 comprising:

the LED fluorescent lamp comprises a lamp holder body 300, a power supply 5 (not shown), a conductive needle 301 arranged at the top end of the lamp holder, a telescopic device 332 with one end capable of moving along the direction of the conductive needle 301 (namely the axial direction of the LED fluorescent lamp) extending out of the lamp holder, and a micro switch 334; the expansion device 332 is provided with a stop part 337, and the movement amplitude of the expansion device 332 (namely the amplitude of the expansion device 332 extending out of the lamp holder body) is controlled by the stop part 337; the micro switch 334 is disposed inside the telescopic device 332 (the telescopic device 332 extends out of the protrusion of the lamp cap), and the micro switch 334 is sandwiched between two springs (the spring 333a and the spring 333 b) with different elastic coefficients. When the lamp cap 3 is properly mounted to the lamp base, the conductive pin 301 is inserted into the lamp base (not shown); the telescopic device 332 moves along the direction opposite to the direction that the conductive needle 301 is inserted into the lamp holder due to the extrusion of the lamp holder, and the micro switch 334 is triggered due to the action of the two springs with different elastic coefficients, so that the conductive needle 301 is connected with the power supply 5.

The micro switch can be arranged on the lamp holders connected with the two sides of the LED fluorescent lamp. Therefore, the damage caused by leakage current when an installer installs the LED fluorescent lamp is greatly reduced. Because the LED fluorescent lamp is only correctly installed, the connection between the conductive pin 301 and the power supply 5 is realized after the micro switch acts.

In the above-described embodiment, the spring 333b has one end connected to the micro switch 334 and the other end fixed to the fixing portion. The springs 333a and 333b can be operated when receiving a very small force. Preferably, the spring 333a is subjected to 0.5 to 1N; and the spring 333b can operate with a force of 3 to 4N.

When the LED fluorescent lamp is not mounted on the lamp holder, the micro switch 334 operates due to the tension of the spring, so that the power supply 5 is disconnected from the conductive pin 301.

Fig. 26D is a schematic structural diagram of a lamp cap structure according to another embodiment of the invention. A base 3 comprising:

the lamp holder body 300, the power supply 5 (not shown), a conductive needle 301 arranged at the top end of the lamp holder body 300, and elastic sheets 334a which are opposite to each other and have intervals and are provided with telescopic devices 332 and 2, wherein one end of each telescopic device extends out of the lamp holder body and can move along the direction of the conductive needle 301 (namely the axial direction of the LED fluorescent lamp); the telescopic device 332 is provided with a stop component, and the movement amplitude of the telescopic device 332 (namely the amplitude of the telescopic device 332 extending out of the lamp holder body) is controlled by the stop component; the telescopic device 332 is provided with a telescopic rod 335, and the telescopic rod 335 is provided with a conductive component 338; the spring 333 is sleeved on the telescopic rod 335, one end of which is fixed to the stopper, and the other end of which is fixed to the fixing portion 336. When the lamp cap 3 is properly mounted to the lamp base, the conductive pin 301 is inserted into the lamp base (not shown); the telescopic device 332 moves along the direction opposite to the direction that the conductive pin 301 is inserted into the lamp holder due to the extrusion of the lamp holder, the conductive component 338 is inserted between the elastic sheets 334a, and the two elastic sheets 334a are electrically connected to realize the connection of the conductive pin 301 and the power supply 5.

The LED fluorescent lamp provided by the embodiment of the invention is provided with the same lamp cap at two connected sides. Therefore, the damage caused by leakage current when an installer installs the LED fluorescent lamp is greatly reduced. Meanwhile, the requirements of security certification are met.

In case the LED fluorescent lamp is not mounted to the lamp socket, the disconnection of the power supply 5 from the conductive pin 301 is achieved due to the tension of the spring.

In the above embodiment, the 2 opposing and spaced apart clips 334a are generally splayed or horn-shaped. The spring 334a is preferably made of copper.

Fig. 26E is a schematic structural diagram of a lamp cap structure according to another embodiment of the invention. A base 3 comprising:

the lamp holder body 300, the power supply 5, a conductive needle 301 provided at the top end of the lamp holder body 300,

One end which can move along the direction of the conductive needle 301 (namely the axial direction of the LED fluorescent lamp) extends out of the telescopic device 332 of the lamp holder body and is integrally formed into an opening-shaped elastic sheet 334a; the telescopic device 332 is provided with a stop component, and the movement amplitude of the telescopic device 332 (namely the amplitude of the telescopic device 332 extending out of the lamp holder body) is controlled by the stop component; the telescopic device 332 is provided with a telescopic rod 335, a spring piece 334a is arranged at the end of the telescopic rod 335, the opening of the spring piece 334a faces the direction of the power supply 5, a spring 333 is sleeved on the telescopic rod 335, one end of the spring 333 is fixed on the stop component, and the other end of the spring 333 is fixed on the power supply 5. When the lamp cap 3 is properly mounted to the lamp base, the conductive pin 301 is inserted into the lamp base (not shown); the expansion device 332 moves in the opposite direction to the direction that the conductive pin 301 is inserted into the lamp socket due to the extrusion of the lamp socket, and the opening of the elastic piece 334a is clamped to the preset connection part on the power supply 5, so that the conductive pin 301 and the power supply 5 are electrically connected. In case the LED fluorescent lamp is not mounted to the lamp socket, the disconnection of the power supply 5 from the conductive pin 301 is achieved due to the tension of the spring.

Fig. 26F is a schematic structural diagram of a lamp cap structure according to another embodiment of the invention. A base 3 comprising:

One end which can move along the direction of the conductive needle 301 (namely the axial direction of the LED fluorescent lamp) extends out of the telescopic device 332 of the lamp holder body and is integrally formed into an opening-shaped elastic sheet 334a; the telescopic device 332 is provided with a stop component, and the movement amplitude of the telescopic device 332 (namely the amplitude of the telescopic device 332 extending out of the lamp holder body) is controlled by the stop component; the telescopic device 332 is provided with a telescopic rod, and the middle part of one side of the telescopic rod 335 close to the power supply 5 adopts a hollow structure; when the reed is arranged on the power supply 5 and the lamp cap 3 is correctly installed on the lamp holder, the conductive pin 301 is inserted into the lamp holder (not shown); because the hollow structure reed of the telescopic rod is contacted with the contact on the power supply 5 through the hollow structure, the electric connection between the conductive needle 301 and the power supply 5 is realized. In the case that the LED fluorescent lamp is not mounted to the lamp socket, the telescopic rod is clamped between the reed and the contact due to the tension of the spring, so that the power supply 5 is disconnected from the conductive pin 301.

The two sides of the LED fluorescent lamp are provided with the same lamp cap with the protection switch. Therefore, the damage caused by leakage current when an installer installs the LED fluorescent lamp is greatly reduced. Meanwhile, the requirements of security certification are met.

In the above scheme, the telescopic rod 335 adopts a flat strip structure, the middle part of the telescopic rod adopts a hollow structure, and when the LED fluorescent lamp is not mounted on the lamp holder, the end of the telescopic rod 335 is clamped between the reed and the contact, so as to realize the physical disconnection between the power supply 5 and the conductive needle 301.

In the above-described solution, the reeds provided on the power supply 5 may be provided in the form of a bridge, on the deck of which the reeds are provided facing the contacts, a generally flat, elongated telescopic rod passing through the bridge arch, the ends of which are clamped between the reeds and the contacts. Physically disconnecting the power supply 5 from the conductive pin 301.

In the above-described solution, the length of the extension device 332 extending out of the lamp cap does not exceed the length of the conductive pin of the lamp cap. Preferably, the length of the extension device 332 extending out of the lamp cap is 20% -95% of the length of the conductive pin of the lamp cap.

As shown in fig. 27, a schematic structural diagram of an LED fluorescent lamp according to an embodiment of the present invention, an LED fluorescent lamp 100 includes: lamp 1, lamp cap 3 (to embody the lamp cap design of the present invention, the ratio of lamp cap to lamp tube is enlarged, in practice the lamp cap length is about 9.0 mm-70 mm, lamp tube 254 mm-2000 mm (i.e. 1 in.-8 in.)). The lamp cap 3 with a protection switch is respectively arranged at two ends of the lamp tube 1, the conductive needle 301 and the telescopic device 332 are arranged on the lamp cap 3, the micro switch 334 and the lighting circuit 5 module are further arranged in the lamp cap 3, when the LED fluorescent lamp 100 is correctly installed on a lamp holder (not shown), the telescopic device 332 triggers the micro switch 334 to realize the electrical connection between the power supply 5 and the mains supply, and then the LED component (not shown) in the LED fluorescent lamp 100 is lighted.

The implementation of the LED straight tube lamp of the invention in various embodiments is as described above. It should be noted that, in each embodiment, for the same LED straight tube lamp, in the characteristics of "fixing the glass tube and the lamp cap with a high thermal conductivity silica gel", "wrapping the glass tube with the heat shrink tube", "wrapping the lamp plate with the flexible circuit board", "the flexible circuit board is a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer plus a dielectric layer", "the flexible circuit board includes a free portion or does not have a free portion for electrical connection", "the inner peripheral surface of the glass tube is coated with an adhesive film", "the inner peripheral surface of the glass tube is coated with a diffusion film", "the outer cover of the light source is coated with a diffusion film", "the inner wall of the glass tube is coated with a reflective film", "the light source is provided with a bracket", "the assembly of the power source has a long and short circuit board", "the lamp cap with a protection switch structure is provided at both ends of the tube", etc., only one or more of the technical characteristics may be included.

In addition, the content of the "flexible circuit board used as the lamp panel", "the flexible circuit board is a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer plus a dielectric layer" may be selected from one of the related technical features or a combination thereof in the embodiments, the content of the "glass lamp tube and the lamp cap fixed by using a high-thermal-conductivity silica gel" may be selected from one of the related technical features or a combination thereof in the embodiments, the content of the "heat-shrinkable tube covering the glass lamp tube" may be selected from one of the related technical features or a combination thereof in the embodiments, the content of the "glass lamp tube inner circumferential surface coated with an adhesive film" may be selected from one of the related technical features or a combination thereof in the embodiments, the content of the "glass lamp tube inner circumferential surface coated with a diffusion film" may be selected from one of the related technical features or a combination thereof in the embodiments, the content of the "light source housing with diffusion film" may be selected from one of the related features or a combination thereof in the embodiments, and the content of the "light source housing with a related features may be selected from one of the related features or a combination thereof in the embodiments.

For example, in the case that the lamp board is a flexible circuit board, the flexible circuit board is connected with the output end of the power supply through wire bonding or welded with the output end of the power supply. In addition, the flexible circuit soft board is of a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer and a dielectric layer; the flexible circuit board comprises a free part and can be directly and electrically connected with a power supply through a single-layer patterned metal circuit layer structure or a double-layer structure of a single-layer patterned metal circuit layer and a dielectric layer without the free part, and the flexible circuit board can be coated with a circuit protection layer of ink material on the surface and realize the function of a reflecting film by increasing the width along the circumferential direction.

For example, in a glass lamp tube having a diffusion film coated on its inner peripheral surface, the composition of the diffusion coating layer includes at least one of calcium carbonate, calcium halophosphate, and aluminum oxide, as well as a thickener and ceramic activated carbon. In addition, the diffusion film can also be a diffusion film and is covered outside the light source.

For example, in a glass tube having a reflective film coated on its inner wall, the light source may be disposed on the reflective film, in the reflective film opening, or on the side of the reflective film.

For example, in a light source design, the light source includes a holder having a recess, and an LED die disposed in the recess; the bracket is provided with a first side wall and a second side wall, wherein the first side wall is arranged along the length direction of the glass lamp tube, the second side wall is arranged along the width direction of the glass lamp tube, and the first side wall is lower than the second side wall.

For example, in a power supply design, an assembly of long and short circuit boards has a long circuit board and a short circuit board, the long circuit board and the short circuit board are attached to each other and fixed by an adhesive manner, and the short circuit board is located near the periphery of the long circuit board. The short circuit board is provided with a power module, and the whole power module forms a power supply.

That is, the above features can be combined in any arrangement and used for improvement of the LED straight tube lamp. Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims

1. An LED straight tube lamp, comprising:

the lamp comprises a glass lamp tube and two lamp caps arranged at two ends of the glass lamp tube, wherein the lamp caps and the glass lamp tube are fixed through silica gel, and the thermal conductivity of the silica gel is more than or equal to 0.7w/m.k;

The lamp comprises a glass lamp tube, a lamp plate, a diffusion coating, a lamp head and a lamp cover, wherein the lamp plate is tightly attached to the inside of the glass lamp tube, the lamp plate is provided with a plurality of light sources, the lamp plate is a flexible circuit soft plate, the inner peripheral surface of the glass lamp tube is coated with the diffusion coating, light generated by the light sources passes through the glass lamp tube after passing through the diffusion coating, and the diffusion coating is coated on the outer surface of the tail end area of the glass lamp tube so as to enhance the adhesion firmness between the lamp head and the glass lamp tube;

a power supply is arranged in the lamp cap, and the light source is electrically communicated with the power supply through the lamp panel; the lamp cap comprises a lamp cap body, a conductive needle arranged at the top end of the lamp cap body, and a telescopic device of which one end moving along the direction of the conductive needle extends out of the lamp cap, wherein a stop part is arranged on the telescopic device, and the amplitude of the telescopic device extending out of the lamp cap body is controlled by the stop part;

the telescopic device is internally provided with a micro switch, the micro switch is clamped between a first spring and a second spring in the telescopic device, one end of the second spring is connected with the micro switch, and the other end of the second spring is fixed on a fixing part in the telescopic device; the elastic coefficients of the first spring and the second spring are different, and the first spring can act under the force of 0.5-1N and the second spring is acted under the force of 3-4N; when the conductive pin is inserted into the lamp holder to be extruded, the telescopic device triggers the micro switch under the action of the first spring and the second spring, so that the conductive pin is connected with the power supply.

2. The LED straight tube lamp as claimed in claim 1, wherein the length of the telescopic device extending out of the lamp cap is 20-95% of the length of the conductive pin.

3. An LED straight tube lamp as in claim 1 wherein said two lamp bases are not the same size.

4. The LED straight tube lamp as claimed in claim 3, wherein the smaller lamp cap has a size of 30% -80% of the larger lamp cap.