CN106015997B

CN106015997B - LED lamp cap mounting method and device based on electric heating

Info

Publication number: CN106015997B
Application number: CN201610301810.XA
Authority: CN
Inventors: 赵国松; 郭鹏鑫
Original assignee: CH Lighting Technology Co Ltd
Current assignee: CH Lighting Technology Co Ltd
Priority date: 2016-05-09
Filing date: 2016-05-09
Publication date: 2023-03-24
Anticipated expiration: 2036-05-09
Also published as: CN106015997A

Abstract

The invention discloses a lamp cap mounting method of an LED lamp and LED lamp cap mounting equipment based on electric heating. The invention relates to an LED lamp holder mounting method based on electric heating, which comprises the steps of inserting a lamp holder with the inner wall coated with cement into the end part of a lamp tube, heating to solidify the cement to fix the lamp holder and the lamp tube, arranging an electric heating element on the periphery of the lamp holder before heating the cement, heating the cement to 80-200 ℃ by the electric heating element, and solidifying the cement after keeping the temperature for 10 seconds-3 minutes. The LED lamp tube has the advantages that the structure of the installation equipment is simple, the assembly is convenient, the solidification process of the daub in the lamp cap can be more finely controlled by adopting the electric heating and cooling device, the physical and chemical properties of the cured daub can be improved by the matched solidification process and the specific daub, the microstructure of the cured daub is regular and stable and is not easy to age, the safety of the LED lamp tube can be improved, and the service life of the LED lamp tube can be prolonged.

Description

LED lamp cap mounting method and device based on electric heating

Technical Field

The invention relates to the field of manufacturing of LED lamps, in particular to a lamp cap mounting method of an LED lamp and LED lamp cap mounting equipment based on electric heating.

Background

The LED lamp saves electricity by more than 70 percent, has the service life of more than 10 times that of a common lamp tube, is almost maintenance-free, does not have the problem of frequently replacing the lamp tube, the ballast and the starter, and can replace the cost by saving the cost about half a year. The green environment-friendly semiconductor electric light source has soft light and pure color, and is beneficial to the eyesight protection and the body health of people.

The LED lamp is divided into a bulb lamp, a tube lamp and the like in appearance, and is also commonly called an LED light tube, an LED fluorescent tube and an LED fluorescent lamp by taking an LED lamp tube as an example, and the light source of the LED lamp adopts an LED as a luminous body. The traditional fluorescent tube is also called as fluorescent lamp, two ends of the lamp are respectively provided with a filament, the tube is filled with trace argon and rarefied mercury vapor, the inner wall of the tube is coated with fluorescent powder, and when the gas between the two filaments is conductive, the gas emits ultraviolet rays, so that the fluorescent powder emits visible light. Because of containing heavy metal pollutant mercury, the discarded fluorescent lamp tube has serious pollution to the environment. The LED lamp tube adopts the light emitting diode as a light source, has higher lighting effect, more energy saving, longer service life and more environmental protection, and becomes the most ideal product for replacing the fluorescent lamp tube at the present stage.

The LED lamp tube has the same external dimension and caliber as the traditional fluorescent lamp, and comprises a T5 lamp tube, a T8 lamp tube and a T10 lamp tube, wherein the lengths of the T5 lamp tube, the T8 lamp tube and the T10 lamp tube are 0.6m,0.9m,1.2m,1.5m,1.8m and 2.4m.

The LED lamp tube is very simple to install, the original fluorescent lamp is taken down and replaced by the LED lamp tube during installation, the ballast and the starter are removed, and 220V alternating current commercial power is directly applied to two ends of the LED lamp tube.

In the assembly process of the existing LED lamp tube, particularly for the connection between a lamp cap (also called an end cover) and the lamp tube, silicone adhesive is generally used, and the adhesive is aged after being used for a long time, so that the head is loosened, and potential safety hazards are easily caused.

As an improvement, some technologies adopt a metal lamp cap, cement paste (welding mud) is filled between the lamp cap and the lamp tube, the lamp cap is installed and fixed after the cement paste is solidified, and for the installation of the lamp cap, an injection welding mud machine can be used for smearing the welding mud, and then the cement paste is heated and solidified through a head baking machine.

The high-temperature welding mud is also produced by using a water glass material as a binder, but when the high-temperature welding mud is used for HID lamps or high-power ultraviolet lamps such as xenon lamps or projection lamps, the short circuit is easy to break down, the water resistance is poor, and the lamp cap can fall off to cause safety accidents.

Can adopt the LED fluorescent tube clay microwave drying device that china patent application 201510281192.2 disclosed during heating solidification, relate to LED fluorescent tube equipment technical field, constitute by glass tube, lamp cap, microwave oven chamber, microwave emission hole and isolation layer, all be equipped with the microwave oven chamber at the glass tube both ends, be equipped with the lamp cap in the microwave oven chamber, be equipped with the isolation layer between lamp cap and the glass tube, be equipped with the clay between isolation layer and the lamp cap, be equipped with the microwave emission hole on the microwave oven chamber.

Not only do LED lamps have the same structure, but most of LED lamps in other shapes also involve the installation and fixation of the lamp holder and the lamp tube.

In addition, chinese patent application 201510160408.X discloses a novel welding mud for high temperature resistant insulating lamp and a preparation method and application thereof. The welding mud comprises the following components in percentage by mass: 28.0 to 35.0 percent of high-temperature binder, 60.0 to 70.0 percent of functional filler, 0.8 to 1.5 percent of solvent, 0.4 to 1.2 percent of anti-settling agent and 0.05 to 0.07 percent of film-forming assistant; the high-temperature binder is silica sol; the functional filler is a heat-resistant insulating material; the solvent is high-purity water, and the insulation resistance of the solvent is more than or equal to 10M omega. The novel high-temperature-resistant welding mud for the insulating lamp is applied to the lamp holder of the glass bulb.

Not only do LED lamps have such a structure, but most of LED lamps in other shapes also involve the installation and fixation of a lamp cap and a lamp tube (or a lampshade). The existing heating and curing of the daub are mostly carried out by adopting traditional flame heating or microwave heating, but the traditional flame heating is adopted, so that the temperature is not easy to control, the fluctuation is large, the defective rate is high, and the flame is open fire, so that the potential safety hazard exists and the energy consumption is relatively large.

The adopted microwave heating has certain requirements on the components of the daub, the response of different components to microwaves is different, and particularly in some special use environments or when special requirements are made on the strength, the insulativity, the weather resistance and the like of the cured daub, the adopted daub is not necessarily suitable for adopting a microwave heating form, so that a daub curing mode with wider applicability needs to be developed aiming at the lamp holder installation of an LED lamp.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a mode for installing and fixing the LED lamp holder, the electric heating mode is adopted, the temperature is conveniently controlled, open fire does not exist, the components of the daub have no special requirements, and particularly the daub with specific components can obtain better sealing and electrical appliance performance, the safety of the lamp holder part is improved, and the service life of the lamp holder part is prolonged.

A method for installing LED lamp holder based on electric heating includes inserting the lamp holder with cement coated on its inner wall at end of lamp tube, heating to solidify cement to fix lamp holder and lamp tube, arranging electric heating element around lamp holder before heating cement, heating cement to 80-200 deg.C by electric heating element, and solidifying cement after holding for 10 s-3 min.

Preferably, the daub is heated to 110-150 ℃ by the electric heating element and is cured after being kept for 15 seconds-3 minutes.

Regarding the structure of the LED lamp itself, the prior art can be adopted, and the general case includes a lamp tube with a lamp cap fixed at the end, an LED light emitting element and a driving circuit are installed in the lamp tube, and a conductive connecting piece connected with the driving circuit is arranged on the lamp cap.

The lamp tube (also called as lampshade) can be in the shape of a straight tube, a bulb, a spiral tube and the like, and the opening part is sealed by a lamp cap.

The materials of the lamp tube and the lamp cap are not strictly limited, but at least bear the temperature of electric heating, a good thermal conductor is preferred, the common lamp tube can be made of glass, the lamp cap can be made of aluminum or copper, and the like, so that the heat dissipation of the lamp tube is facilitated.

The conductive connecting piece on the lamp holder is determined according to the type of the lamp holder, for example, the lamp holder can adopt a screw type, a pin type and the like, and the conductive connecting piece adopts a matched form.

Preferably, the opening part of the lamp tube is provided with a necking part, the lamp cap is sleeved outside the necking part and is welded and fixed through cement, the necking part shrinks in the radial direction relative to other adjacent parts of the lamp tube and forms a transition step, the transition step is provided with an annular groove which sinks in the axial direction, and the end edge of the lamp cap is inserted into the annular groove.

In order to facilitate the connection of the lamp tube and the lamp cap, a necking part can be arranged at the opening part of the lamp tube, and after the lamp cap is sleeved on the necking part, the end edge of the lamp cap just abuts against the transition step part. After the transition step is provided with an annular groove sinking along the axial direction, the end edge of the lamp holder is inserted into the annular groove. The lamp cap can prevent the cement from overflowing, keeps the appearance tidy, and is still inside the lamp cap even if the redundant cement is extruded to overflow the gap between the lamp tube and the lamp cap, so that the appearance is not influenced.

Preferably, when heating is carried out, the heating rate is adjusted by controlling the power of the electric heating element, and different daubs have different physical and chemical properties, so that different daubs have different optimal heating rates, curing temperatures and heat preservation time. Therefore, the heating rate and the related heating and curing parameters are adjusted according to the formula of the cement or the material of the lamp tube and the lamp holder.

In the invention, in order to control and adjust the technological parameters of the heater conveniently, a cooling device acting on a lamp holder is arranged during heating, so that the temperature can be raised in stages, namely, the temperature can be kept unchanged or even reduced at necessary time nodes among different stages and then raised, thus being more beneficial to exerting the performance advantages of the daub, avoiding burst and improving the performance particularly for the daub with certain components.

Preferably, the heating process is divided into two periods of time, and the rate of temperature rise is greater for the first period of time than for the second period of time.

Specifically, the temperature of the first time period is increased from room temperature to 75-90 ℃, and the temperature of the rest is the second time period, namely, the temperature is increased from the end of the first time period to 110-200 ℃.

Preferably, the first period of time is ramped from room temperature to 75-90 ℃ and then from the end of the first period of time to 110-150 ℃.

Many daubs contain organic solvents such as ethanol in the formula, the volatilization rate of the organic solvents starts to increase at 75-90 ℃, and in order to avoid micro defects caused by too fast volatilization, the temperature rise rate in the first time period is preferably higher than that in the second time period.

For example, the temperature rise rate of the first period is 1.5 to 3 times the temperature rise rate of the second period.

The temperature is raised from room temperature to 85 ℃ after 60 seconds in the first time period, and then the temperature is raised to 115 ℃ after 60 seconds in the second time period, wherein the temperature is raised from 1 ℃ to 2 seconds in the second time period.

According to the technical scheme, after the temperature rise rate of the first time period is greater than that of the second time period, compared with the situation that the temperature rise rate is not changed, the air tightness of the daub is better, the microstructure is uniform, and on the contrary, if the temperature rise rate of the second time period is higher, the organic solvent is violently volatilized, the structural defect of the daub after solidification is caused, and the quality hidden trouble is caused.

More preferably, the electric heating element heats the daub to 110-130 ℃, and the daub is cured after being kept for 15 seconds-2 minutes.

After the daub is solidified, the daub can be naturally cooled, and preferably, the daub is cooled by a cooling device.

In the cooling process, the temperature variation trend and the speed have certain influence on the performance of the cured daub. The cooling device is used for adjusting the cooling speed and the temperature of the cooling device, the cooling mode can adopt gas injection or cooling by circulating a liquid heat exchange medium, and preferably adopts the gas injection mode, so that the equipment is relatively simple and is convenient to control.

The electric heating element can be in direct contact with the lamp cap or can be in indirect contact with the lamp cap through other heat conducting components. Thereby realizing the heat transfer.

In order to realize the installation of the LED lamp cap by adopting electric heating, the invention also provides installation equipment which is specially used for curing the daub between the lamp cap and the lamp tube.

The utility model provides a LED lamp holder erection equipment based on electrical heating, is including being used for inserting the ring carrier who establishes the lamp holder, be equipped with electric heating element in the ring carrier, this electric heating element matches and is furnished with corresponding drive circuit.

The annular support is used for supporting and fixing the lamp caps firstly, the lamp caps are coated with cement and are spliced with the lamp tubes, the annular support is installed adaptively according to the shapes of the lamp tubes and the positions of the lamp caps, the LED lamp tubes are taken as an example, the lamp caps are arranged at two ends of the lamp tubes, the annular support is correspondingly arranged in pairs, and the positions of the annular support correspond to the lamp caps at the two ends.

In order to better fit the annular bracket and the lamp cap so as to facilitate heat conduction, a cylinder with certain thickness is arranged between the rings, and the electric heating element can be embedded in the cylinder wall and can also be wrapped on the outer wall of the cylinder.

Preferably, the annular bracket comprises an inner cylinder directly contacted with the lamp cap and an outer cylinder or an outer plate fixed on the outer wall of the inner cylinder, and the electric heating element is positioned at the outer cylinder or the outer plate.

Preferably, the annular support comprises an inner cylinder in direct contact with the lamp cap and an outer plate arranged outside the inner cylinder, and the electric heating element is located at the outer plate.

The middle part of the outer plate is provided with a through hole, the inner cylinder is arranged in the through hole in a penetrating mode and is tightly attached to the inner edge of the through hole, and the outer plate is arranged perpendicular to the axis of the inner cylinder.

Optionally, the electric heating element is embedded in the outer plate or the outer plate is used as the electric heating element.

When the electric heating element is embedded in the outer plate, the electric heating element can adopt an electric heating wire and the like and is matched with a corresponding driving circuit.

When the outer plate is used as an electric heating element, the outer plate can adopt the forms of an electric heating plate, an electric heating film and the like with an integrated structure and is matched with a corresponding driving circuit.

The driving circuit of the electric heating element comprises a frequency modulation power supply unit and a sensor which is used for collecting the temperature of the lamp holder and feeding the temperature back to the frequency modulation power supply unit.

The frequency modulation power supply unit changes the output power of the electric heating element in a frequency modulation mode according to a feedback signal acquired by the sensor so as to obtain the expected temperature and the temperature change trend.

The annular support adopts an inner structure and an outer structure, so that the lamp holder can be prevented from being too sensitive to the temperature change of the annular support, and the temperature can be conveniently and finely adjusted.

Preferably, the inner tube is made of a good thermal conductor, generally a copper material, and preferably has a thickness of, for example, 5 to 15mm in order to appropriately buffer temperature oscillation.

The outer plate or the outer cylinder is also preferably of a certain thickness, for example 5 to 12mm. After the outer plate or the outer cylinder is electrified and heated, heat is stably conducted to the lamp holder through the inner cylinder, and accurate temperature control is achieved.

More preferably, the outer plate or the outer cylinder covers a part of the outer wall of the inner cylinder, and the outer plate or the outer cylinder covers 1/4 to 2/3 of the outer wall of the inner cylinder along the axial direction of the inner cylinder.

When the inner wall of the lamp holder is coated with the daub, the daub only covers part of the inner wall of the lamp holder, such as 1/4-2/3 of the inner wall of the lamp holder, when the daub is heated and changes in volume or flows, overflow can be avoided, and in this way, the cost can be reduced while the sealing and bonding performance is ensured.

Moreover, the axial position of the daubing area relative to the lamp holder may slightly differ according to the fluidity of the daubing, and in order to solve the problem of adaptation to the daubing position, the outer plate or the outer cylinder is preferably hooped outside the inner cylinder through interference fit.

A key groove structure for circumferential positioning is arranged between the outer plate or the outer cylinder and the outer wall of the inner cylinder. The design is convenient for adjust the outer plate or the outer cylinder relative to the axial position of the inner cylinder so as to adapt to the difference of the positions of the daub.

The outer plate or the outer cylinder and the inner cylinder can ensure the heat conduction effect through interference fit, and the asynchronous solidification caused by uneven heating is avoided.

To facilitate axial positioning, axial positioning elements, such as radially disposed pins or the like, may be provided on the outer wall of the inner barrel.

In order to accommodate the need for temperature regulation, the mounting device also comprises cooling means acting on the toroidal support.

The cooling device is a hollow ring wound on the periphery of the annular support, the axial end part of the hollow ring is of a closed structure, the inner wall of the hollow ring is provided with an air outlet, and the outer wall of the hollow ring is provided with an air supply pipeline.

And the gas supply pipeline is provided with a regulating valve, and a control circuit of the regulating valve obtains a temperature signal from the sensor to control the opening of the regulating valve.

Preferably, the air outlet holes are uniformly distributed on the inner wall of the hollow ring around the axis of the hollow ring. The positions of the air outlet holes correspond to the exposed part (the area which is not covered by the outer cylinder or the outer plate) of the inner cylinder in the annular bracket.

When the temperature is required to be adjusted, the opening degree of the adjusting valve is adjusted, the air source can be filtered normal-temperature air, and inert gas such as nitrogen is preferably selected, so that the oxidation of metal parts can be avoided, and the safety is also improved.

The air enters the inner cavity of the hollow ring through the air supply pipeline and is sprayed to the exposed part of the inner barrel in the annular bracket through the air outlet hole, so that the temperature of the lamp holder can be adjusted and changed flexibly.

In order to improve the integrated control, a control circuit of the regulating valve and a frequency modulation power supply unit of the electric heating element can be integrated, the automatic control of the temperature of the lamp cap is realized by using software, and the prior art can be used by adopting a traditional analog circuit or software installed in a chip only in terms of the control mode of the temperature.

As a further preference, the side of the inner cylinder close to the lamp vessel is an exposed part (i.e. not enveloped by the outer plate or the outer cylinder), and the hollow ring is arranged at the periphery of the exposed part.

Because the LED lamp tube is internally provided with a corresponding circuit, circuit elements or a substrate and the like which are generally not suitable for being in a high-temperature environment, particularly when the temperature fluctuates, the hollow ring of the cooling lamp cap can be closer to the lamp tube, so that the circuit elements in the lamp tube can be better protected when the cooling is carried out.

When the inner wall of the lamp holder is coated with the daub, the daub only covers 1/4-2/3 of the inner wall of the lamp holder in the axial direction of the lamp holder, and the daub is positioned on one side far away from the lamp tube, or at least one section of the inner wall of the lamp holder on one side close to the lamp tube is a blank area without daub.

In order to obtain a proper cooling effect, a certain distance should be maintained between the inner wall of the hollow ring and the outer wall of the inner cylinder, and preferably, the distance between the inner wall of the hollow ring and the outer wall of the inner cylinder is 5 to 25mm.

As further preferred, the position that inner tube outer wall and hollow ring correspond is equipped with the heat transfer groove of seting up along the axial, and a plurality of heat transfer grooves are arranged around circumference in proper order, can improve refrigerated effect like this, have played the water conservancy diversion effect to gas.

Because a circumferential positioning key groove structure is arranged between the outer plate or the outer cylinder and the outer wall of the inner cylinder, the heat exchange groove on the outer wall of the inner cylinder is preferably used as a key groove, and the inner edge of the outer plate or the outer cylinder is provided with a positioning key matched with the key groove.

When the hollow ring sprays gas, the air flow can flow to one side of the lamp tube under the guiding action of the heat exchange groove, preferentially cools the circuit element, and can play a better protection effect on the circuit element in the lamp tube.

In order to fully exert the installation equipment and the LED lamp cap installation method based on electric heating, the invention also provides LED lamp cap daub, which comprises the following raw materials in parts by weight:

the formula of the daub contains ethanol, so that on one hand, the fluidity of the daub before curing can be increased, daubing of the daub by adopting automatic equipment is facilitated, and in addition, the daub curing process is optimized by adjusting the temperature change rate in combination with the characteristics of convenience in temperature control of electric heating and the like, and the bonding effect of the lamp cap and the lamp tube after curing is improved.

In order to adapt to the formulation of the present invention, as a further preference, the heating process of the daub is divided into two time periods, wherein the first time period is from room temperature to 75-90 ℃, the rest is the second time period, namely from the end of the first time period to 110-150 ℃, and the heating rate of the first time period is greater than that of the second time period.

Further preferably, the temperature increase rate in the first period is 1.5 to 3 times the temperature increase rate in the second period. For example, the temperature is raised from room temperature to about 85 ℃ after 60 seconds in the first time period, and then the temperature is raised to about 115 ℃ after 60 seconds in the second time period, and the temperature is raised from room temperature to about 1 ℃/2 seconds in the second time period.

Preferably, the LED lamp cap daub comprises the following raw materials in parts by weight:

in the preferred scheme, the appropriate increase of white carbon black and alumina quantity can improve the physical strength after solidification, and corresponding improvement rosin and ethanol quantity can guarantee the mobility of daub before the solidification and in the heating process, avoid having structural defect after the solidification, and the daub distributes evenly.

in a further preferred scheme, the usage ratio of the white carbon black to the alumina is adjusted, so that the daub can obtain better insulating property after being cured.

As another preference, the LED lamp cap daub comprises the following raw materials in parts by weight:

in another preferred scheme, the amount of ethylene diamine used as the curing agent is reduced, even omitted, the curing can be promoted by properly increasing the temperature during curing, and in addition, the safety of circuit elements in the lamp tube can be ensured by matching with a cooling device. The reduction or omission of ethylenediamine in this embodiment may suitably extend the shelf life of the cement.

The invention also provides another LED lamp cap daub which comprises the following raw materials in parts by weight:

in the preparation process, shellac solution, rosin, hexamethylenetetramine and ethanol (70-90% of the weight of the ethanol in the components are added firstly) are stirred for 5-7 hours by turning on a power supply (0.55 KW of a motor) to prepare shellac solution. And then mixing the needed parts by weight of the double-flying powder, the insect glue solution, the 2127 phenolic resin and the residual ethanol, turning on a power supply of a stirrer, uniformly stirring to obtain the welding mud, wherein the stirring is not sticky with the mud on the surface layer of the rear welding mud, and the stirring time is 2-3h. The components of the daub are mixed properly, and the added ethanol can prevent the welding mud from sagging after the lamp socket is starched.

Another curing procedure of the LED cap mastic of the invention is preferably: the temperature is raised to 80-90 ℃ from room temperature at 1-1.5 ℃/second in the first time period, and then is raised to 120-130 ℃ from the end temperature of the first time period at 0.5-1 ℃/second.

After the lamp holder is starched, the lamp holder is stored until the surface of the lamp holder is skinned, and the using effect is optimal. But the storage time on site is as follows: in summer, the time can not exceed 2 hours; and 3 hours in winter.

In the other LED lamp cap daub component provided by the invention, 2127 phenolic resin: when the weight ratio of the shellac is 2.

further preferably, the LED lamp cap daub comprises the following raw materials in parts by weight:

preferred curing procedures under further preferred LED cap mastic compositions are: the first time period started to warm up from room temperature to 80 ℃ at a temperature rise of 1.5 ℃/sec, and then warmed up to 120 ℃ at 1 ℃/sec from the end of the first time period. Under the cement components and the curing procedure of the mixture ratio, the bonding strength of the cement and the lamp tube, the breakdown voltage and the heat-resisting temperature of the lamp tube are greatly improved.

The welding mud needed by production is taken out from the container, a small amount of alcohol is poured on the surface of the unused welding mud, and the container is covered to prevent the alcohol from volatilizing.

The LED lamp tube has the advantages that the structure of the installation equipment is simple, the assembly is convenient, the solidification process of the daub in the lamp cap can be more finely controlled by adopting the electric heating and cooling device, the physical and chemical properties of the cured daub can be improved by the matched solidification process and the specific daub, the microstructure of the cured daub is regular and stable and is not easy to age, the safety of the LED lamp tube can be improved, and the service life of the LED lamp tube can be prolonged.

Drawings

FIG. 1 is a schematic structural view of a combination portion of an LED lamp cap and a lamp tube;

FIG. 2 is a schematic structural view of the mounting apparatus of the present invention;

FIG. 3 is a schematic view showing a structure of a state where the mounting apparatus of the present invention is used;

fig. 4 is a schematic flow chart of the LED lamp cap mounting method of the present invention.

Detailed Description

Mounting device

Referring to fig. 1, in the figure, a lamp tube 1 and a lamp holder 2 are sleeved with each other, and cement is filled and fixed in a gap.

In order to realize the cleanness of the periphery, the end part of the lamp tube 1 is provided with a necking part 3, the diameter of the necking part 3 is slightly smaller than that of other parts of the lamp tube 1, and the diameter difference is exactly compensated by the daub 5 and the lamp cap 2.

The connecting part of the necking part 3 and other parts of the lamp tube 1 forms a transition step, the transition step is provided with an annular groove 4 sinking along the axial direction, and the lower limit direction is away from the lamp holder direction of the end.

After the lamp holder 2 is sleeved on the lamp tube 2, the end edge of the lamp holder 2 is just inserted into the annular groove 4, and in order to be matched with the annular groove 4 in a rigid manner, the end edge of the lamp holder 2 is folded inwards to form radial inward folding which just abuts against the inside of the annular groove 4.

An insulating plate 6 can be arranged on the lamp cap 2 according to the prior art, a pole column is arranged on the insulating plate 6, and daub 5 is coated in the gap between the lamp tube 1 and the lamp cap 2. The end edge of the lamp cap 2 is inserted into the annular groove 4, so that the cement can be prevented from flowing and overflowing due to heat, even if the cement flows, the cement basically flows leftwards in the figure, and a small amount of overflow can be limited in the lamp tube 2 without affecting the appearance.

The daub 5 does not need to completely fill the gap between the lamp tube 1 and the lamp cap 2, and when daub is daubed on the inner wall of the lamp cap 2, the length of a daub daubing area is half of the length of the gap between the lamp tube 1 and the lamp cap 2 in the axial direction.

In the figure, the gap between the lamp tube 1 and the lamp holder 2 is in the axial direction, the middle part is the daub 5, the left side is the first gap 7, and the first gap 7 can avoid the adverse effect of high temperature on the insulating plate 6 and the pole. The right side of the daub 5 is provided with a second gap 8, the second gap 8 can avoid overflow of the flowing daub 5 from the joint of the lamp holder 2 and the lamp tube 1, and the arrangement of the first gap 7 and the second gap 8 can save the space of the flowing daub for buffering and compensation on the other hand and on the one hand, the daub 5 is saved.

Referring to fig. 2 and 3, the LED lamp holder mounting device based on electric heating of the present invention comprises an annular support for inserting the lamp holder, the annular support comprises an inner cylinder 9 directly contacting with the lamp holder and an outer cylinder 11 fixed on the outer wall of the inner cylinder 9, and the lamp holder 2 is inserted into the inner cylinder 9 in use.

The effect of ring carrier supports and fixed lamp holder 2 at first, has scribbled the daub 5 and pegged graft together with fluorescent tube 1 in the lamp holder 2 this moment, the ring carrier according to fluorescent tube 1 shape and 2 position adaptability installations of lamp holder, this embodiment is the LED fluorescent tube, and 1 both ends of fluorescent tube all have lamp holder 2, correspond, and the ring carrier sets up in pairs, and the position is corresponding with two lamp holders 2.

In order to detect the temperature of the lamp cap 2 more sensitively, a sensor 10 is embedded in the wall of the inner cylinder 9 which is closer to the lamp cap 2, and an electric heating element 12 is embedded in the wall of the outer cylinder 11.

The sensor 10 is arranged at the radial middle part of the cylinder wall of the inner cylinder 9, and the electric heating element 12 is embedded at the radial middle part of the cylinder wall of the outer cylinder 11 similarly. Therefore, the heating process can be relatively accurately and objectively reflected no matter the heating process or the temperature detection process.

The annular support of this embodiment adopts inside and outside nested structure, can avoid lamp holder 2 temperature variation too sensitive to the meticulous regulation of temperature.

The driving circuit 16 can collect the signal of the sensor 10 to control the power of the electric heating element 12, and the electric heating element 12 can adopt a variable frequency power supply form and the like to facilitate the adjustment of the power.

In this embodiment, the inner cylinder 9 and the outer cylinder 11 are made of a good thermal conductor such as copper, and the inner cylinder 9 has a thickness of 5 to 15mm and the outer cylinder has a thickness of 5 to 12mm in order to appropriately buffer temperature oscillation. After the outer cylinder 11 is electrified and heated, heat is stably conducted to the lamp holder 2 through the inner cylinder 9, and accurate temperature control is achieved.

In the embodiment, the outer cylinder 11 covers part of the outer wall of the inner cylinder 9, and it can be seen in the figure that the left ends of the outer cylinder 11 and the inner cylinder 9 are substantially flush, or one end of the inner cylinder 9 far away from the lamp tube 1 is completely covered by the outer cylinder 11, one end of the inner cylinder 9 close to the lamp tube 1 is an exposed part, and along the axial direction of the inner cylinder 9, the outer cylinder 11 covers 2/3 of the outer wall of the inner cylinder 9.

The relative axial position of lamp holder 2 in the relative lamp holder in daub 5 region, daub promptly has probably according to the mobility difference slightly difference of daub to the location, for the adaptation problem with the daub position of solution, 11 interference fit hoops tightly at inner tube 9 outsidely of urceolus of this embodiment, and heat conduction effect can be guaranteed to interference fit, avoids heating inhomogeneous the not synchronous problem of daub solidification that leads to different regions.

For further positioning, a circumferentially positioned key groove structure is arranged between the outer cylinder 11 and the outer wall of the inner cylinder 9, wherein the outer wall of the inner cylinder 9 is provided with a groove 13, and the inner wall of the outer cylinder 11 is provided with a key 14.

When the relative position of the outer cylinder 11 and the inner cylinder 9 needs to be changed, only the outer cylinder 11 needs to be forced in the axial direction, and the outer cylinder 11 can be displaced in the axial direction under the guidance of the key groove structure, although one end of the inner cylinder 9 close to the lamp tube 1 is an exposed part, the outer cylinder 11 is at least enveloped with the area where the plaster 5 is located.

In order to meet the requirement of temperature adjustment, the installation equipment of the embodiment further comprises a cooling device, the cooling device is a hollow ring 17 wound on the periphery of the annular support, two axial end portions of the hollow ring 17 are of a closed structure, the inner wall of the hollow ring is provided with an air outlet 21, the outer wall of the hollow ring is provided with an air supply pipeline communicated with an air source 19, the air supply pipeline is provided with an adjusting valve 18, the adjusting valve 18 is also controlled by the driving circuit 16, and a temperature signal is obtained through the sensor 10 to control the opening degree of the adjusting valve 18.

The inner cavity 20 of the hollow ring 17 is an air distribution cavity communicated with the air supply pipeline, and a plurality of air outlet holes 21, generally 4-10 air outlet holes, are uniformly distributed on the inner wall of the hollow ring 17 around the axis of the hollow ring 17.

It can be seen that the axial position of the air outlet 17 corresponds to the exposed portion of the inner barrel 9, which facilitates the sensitive and timely change of the temperature of the inner barrel 9.

When the temperature needs to be adjusted, the driving circuit 16 can change the opening degree of the adjusting valve 18, and the gas source 19 adopts compressed inert gas, such as argon, and the like, so that the oxidation of nearby metal parts can be avoided, and the safety is further improved.

In order to obtain a suitable cooling effect, the inner wall of the hollow ring 17 and the outer wall of the inner cylinder 9 should be kept at a distance, optionally 5-25 mm.

Because a key groove structure for circumferential positioning is arranged between the outer cylinder 11 and the outer wall of the inner cylinder 9, the groove 13 on the outer wall of the inner cylinder 9 can be used as a heat exchange groove, so that the cooling effect can be improved, and the gas is guided. When the hollow ring 17 is used for injecting gas, under the guiding action of the heat exchange grooves, the gas flow can flow towards one side of the lamp tube 2 along the arrow direction in the figure, and the circuit elements are preferentially cooled, so that the better protection effect on the circuit elements in the lamp tube 1 can be achieved.

In the embodiment, the depth of the groove 13 on the outer wall of the inner barrel 9 is greater than the height of the key 14, so that a gap 15 is left between the bottom of the groove 13 and the top of the key 14, the height of the gap 15 in the radial direction is 2-5 mm, and when the hollow ring 17 sprays gas, a part of gas flow flows out from the left side of the lamp cap 2 through the gap 15 to assist cooling.

Mastic preparation and curing

Example 1

The daub is prepared by mixing the following raw materials in parts by weight:

curing was performed using the mounting apparatus of the present embodiment under the following curing conditions:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting from room temperature to heat up according to 1 ℃/second, heating to 85 ℃ after 60 seconds, entering a second time period, heating to 115 ℃ after 60 seconds in the second time period according to 1 ℃/2 second, then preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second through a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder taken out of the mounting equipment to enter a subsequent working section.

Example 2

The daub is prepared by mixing the following raw materials in parts by weight:

Example 3

The daub is prepared by mixing the following raw materials in parts by weight:

Example 4

The daub is prepared by mixing the following raw materials in parts by weight:

Example 5

The daub is prepared by mixing the following raw materials in parts by weight:

Example 6

The daub is prepared by mixing the following raw materials in parts by weight:

Example 7

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second to 90 ℃, entering a second time period, heating up to 150 ℃ according to 1 ℃/2 second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the mounting equipment to enter a subsequent working section.

Example 8

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second to 75 ℃ in a first time period, entering a second time period, heating up to 110 ℃ according to 1 ℃/2 second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the mounting equipment to enter a subsequent working section.

Example 9

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 1.5 ℃/second to 85 ℃ in a first time period, entering a second time period, heating up to 115 ℃ in the second time period according to 1 ℃/2 second, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second through a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, cooling and entering a subsequent working section.

Example 10

The daub is prepared by mixing the following raw materials in parts by weight:

Example 11

The daub is prepared by mixing the following raw materials in parts by weight:

Example 12

The daub is prepared by mixing the following raw materials in parts by weight:

Example 13

The daub is prepared by mixing the following raw materials in parts by weight:

Example 14

The daub is prepared by mixing the following raw materials in parts by weight:

Example 15

The daub is prepared by mixing the following raw materials in parts by weight:

Example 16

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 1

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 2

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 3

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 4

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 5

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 0.5 ℃/second to 85 ℃ in a first time period, entering a second time period, heating up to 115 ℃ in the second time period according to 1 ℃/2 second, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second through a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, cooling and entering a subsequent working section.

Comparative example 6

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 0.5 ℃/second to 85 ℃ in a first time period, entering a second time period, heating up to 115 ℃ according to 1.5 ℃/second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second through a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, cooling and entering a subsequent working section.

Comparative example 7

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second to 85 ℃ in a first time period, entering a second time period, heating up to 115 ℃ according to 0.5 ℃/second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the installation equipment to enter a subsequent working section.

Comparative example 8

The daub is prepared by mixing the following raw materials in parts by weight:

Comparative example 9

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 0.5 ℃/second in a first time period, heating to 85 ℃, entering a second time period, heating to 115 ℃ according to 0.5 ℃/second in the second time period, then preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second through a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, cooling and entering a subsequent working section.

Example 17

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second, heating up to 80 ℃ after 60 seconds, entering a second time period, heating up according to 1 ℃/2 second in the second time period, heating up to 200 ℃ after 60 seconds, preserving heat for 30 seconds to finish the heating process, cooling down according to 3 ℃/1 second through a cooling device after finishing heating, cooling down to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the mounting equipment to enter a subsequent working section.

Example 18

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second to 90 ℃, entering a second time period, heating up to 130 ℃ according to 1 ℃/2 second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the mounting equipment to enter a subsequent working section.

Example 19

Compared with the example 17, the difference lies in that the raw materials with the following weight portions are mixed to prepare the daub:

example 20

Compared with the example 17, the difference is that the raw materials with the following weight portions are mixed to prepare the daub:

example 21

example 22

example 23

Compared with example 20, the difference is that curing was performed using the mounting apparatus of this example under the following curing conditions:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1 ℃/second to 80 ℃ in a first time period, entering a second time period, heating up to 120 ℃ according to 1 ℃/2 second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, and naturally cooling the lamp holder from the mounting equipment to enter a subsequent working section.

Example 24

The daub is prepared by mixing the following raw materials in parts by weight:

daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 1.5 ℃/second to 80 ℃, entering a second time period, heating up to 120 ℃ according to 1 ℃/second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, naturally cooling and entering a subsequent working section.

Example 25

The daub is prepared by mixing the following raw materials in parts by weight:

daubing daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on mounting equipment, electrifying to heat up, starting to heat up from room temperature according to 1.5 ℃/second in a first time period, heating up to 80 ℃, entering a second time period, heating up to 200 ℃ according to 1 ℃/second in the second time period, then preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, naturally cooling the lamp holder from the mounting equipment, and entering a subsequent working section.

Example 26

Compared with example 25, the difference is that curing was performed using the mounting apparatus of this example under the following curing conditions: daubing the daub on the inner wall of the lamp holder, butting the daub with the lamp tube, fixing the daub on the installation equipment, electrifying to heat up, starting to heat up from room temperature according to 1.0 ℃/second to 90 ℃, entering a second time period, heating up to 130 ℃ according to 1 ℃/second in the second time period, preserving heat for 30 seconds to finish the heating process, cooling according to 3 ℃/1 second by a cooling device after finishing heating, cooling to 55 ℃ after 20 seconds, taking the lamp holder out of the installation equipment, naturally cooling and entering a subsequent working section.

Performance detection

The bonding strength is measured by a lamp cap torsion tester;

the breakdown voltage is tested by a resistance tester (25 +/-2 ℃ and 50 +/-5 RH).

The heat resistance temperature is determined using a muffle furnace, i.e. the temperature at which ageing takes place for 60 minutes in a muffle furnace, and smoking, discoloration or loosening of the head.

The results are shown in table 1:

TABLE 1

As can be seen from table 1, in examples 1 to 6 and comparative examples 1 to 4, the weight ratio of rosin to ethanol in the cement to the phenolic resin had an effect on the adhesion strength of the lamp tube, and the adhesion strength was increased by increasing the weight ratio of rosin to ethanol, and by increasing the ratio of rosin to ethanol, but when the weight ratio of rosin was more than 60 parts and the weight ratio of ethanol was more than 35 parts, the adhesion strength of the lamp tube was rather decreased.

In the secondary heating curing, the final temperature of the first time period is 75-90 ℃, the final temperature of the second time period is 110-150 ℃, and the heating rate of the first time period is greater than that of the second time period, so that the good performance of the lamp tube, such as the bonding strength, can be realized, but when the heating rate of the second time period is greater than that of the first time period, the bonding strength and the breakdown voltage of the lamp tube are reduced to some extent (comparative example 6), and when the heating rate of the first time period is lower, the performance of the prepared lamp tube is not changed greatly, but the curing time of the lamp tube is prolonged.

In addition, the weight portion ratio of the ethylenediamine is reduced, the storage stability of the daub can be improved, and the heat-resistant temperature of the lamp tube is improved. Under the condition of not containing ethylenediamine, the curing temperature is increased, and the heat-resistant temperature of the prepared lamp tube can be increased to a certain extent. From example 18 to example 25, it is known that, by using 2127 phenolic resin, rosin, shellac, calcium carbonate, hexamethylenetetramine and ethanol as the components of the cement, the adhesion strength, breakdown voltage and heat resistance of the lamp tube are all improved, and when the weight ratio of 2127 phenolic resin to shellac is 2 parts by weight, the improvement effect is obvious (as in examples 20 and 21, the weight ratio of 2127 phenolic resin of example 20 to shellac is 6, the parameters of each indication are improved instead. The first time period is heated from room temperature to 80-90 ℃ at the temperature of 1-1.5 ℃/second, and then the last temperature of the first time period is heated to 120-130 ℃ at the temperature of 0.5-1 ℃/second, so that the lamp tube is cured. The lamp prepared under the formulation and curing procedure of example 24 had the best results for each of the parameters.

Claims

1. An LED lamp holder mounting device based on electric heating comprises an annular support for inserting a lamp holder, and is characterized in that an electric heating element is arranged in the annular support and matched with a corresponding driving circuit;

the annular support comprises an inner cylinder directly contacted with the lamp cap and an outer cylinder or an outer plate fixed on the outer wall of the inner cylinder, and the electric heating element is positioned at the outer cylinder or the outer plate;

the mounting equipment also comprises a cooling device acting on the annular support, the cooling device is a hollow ring wound on the periphery of the annular support, the axial end part of the hollow ring is of a closed structure, the inner wall of the hollow ring is provided with an air outlet, and the outer wall of the hollow ring is provided with an air supply pipeline; the outer wall of the inner cylinder is provided with heat exchange grooves which are arranged along the axial direction at the positions corresponding to the hollow rings, and the heat exchange grooves are sequentially distributed along the circumferential direction; the inner cavity of the hollow ring is an air distribution cavity communicated with an air supply pipeline, and a gap is reserved between the inner cylinder and the outer cylinder;

the left ends of the outer cylinder and the inner cylinder are basically parallel and level, or one end of the inner cylinder far away from the lamp tube is completely covered by the outer cylinder; one end of the inner cylinder close to the lamp tube is an exposed part; the outer barrel inner wall is provided with a key, the depth of a heat exchange groove in the inner barrel outer wall is larger than the height of the key, a gap is reserved between the bottom of the heat exchange groove and the top of the key, and when the hollow ring sprays gas, a part of gas flow can flow out from the left side of the lamp holder through the gap.

2. The electric heating-based LED lamp cap mounting device as claimed in claim 1, wherein the inner cylinder has a thickness of 5-15 mm; the thickness of the outer cylinder is 5-12 mm.

3. The LED lamp holder mounting device based on electric heating as claimed in claim 2, wherein the outer cylinder covers a part of the outer wall of the inner cylinder, and the outer cylinder covers 1/4 to 2/3 of the outer wall of the inner cylinder along the axial direction of the inner cylinder.

4. The LED lamp cap mounting device based on electric heating of claim 3, wherein the outer plate or the outer cylinder is clamped outside the inner cylinder through interference fit, and a circumferentially positioned key groove structure is arranged between the outer plate or the outer cylinder and the outer wall of the inner cylinder.

5. The electrical heating based LED lamp holder mounting device as claimed in claim 1, wherein the air outlet holes are uniformly distributed on the inner wall of the hollow ring around the axis of the hollow ring, and the positions of the air outlet holes correspond to the exposed part of the inner cylinder in the annular bracket.

6. The electrical heating-based LED lamp cap mounting device as claimed in claim 5, wherein the hollow ring is at an outer periphery of the exposed portion.

7. An LED lamp holder mounting method based on electric heating, according to any one of claims 1-6, comprising inserting a lamp holder coated with cement on the inner wall at the end of a lamp tube, heating to solidify the cement to complete the fixation of the lamp holder and the lamp tube, characterized in that an electric heating element is arranged on the periphery of the lamp holder before the cement is heated, the cement is heated to 80-200 ℃ by the electric heating element, and the cement is solidified after being kept for 10 seconds-3 minutes.

8. The method for mounting an LED lamp holder based on electric heating as claimed in claim 7, wherein the opening portion of the lamp tube is provided with a necking portion, the lamp holder is sleeved outside the necking portion and is fixed by welding with cement, the necking portion is shrunk in a radial direction relative to other adjacent portions of the lamp tube to form a transition step, the transition step is provided with an annular groove which is sunk in an axial direction, and an end edge of the lamp holder is inserted into the annular groove.

9. The method of claim 8, wherein the heating process is divided into two periods of time, and the rate of temperature increase is greater for the first period of time than for the second period of time.

10. The method for mounting an LED lamp cap based on electric heating as claimed in claim 9, wherein the first time period is from room temperature to 75-90 ℃, and the rest is the second time period from the end of the first time period to 110-150 ℃.

11. The method for mounting an LED lamp cap based on electric heating as claimed in claim 10, wherein the first time period is from room temperature to 1 ℃/s, and then the temperature rises to 85 ℃ after 60 seconds, and then the second time period is from 1 ℃/2 s, and then the temperature rises to 115 ℃ after 60 seconds.

12. The method for installing the LED lamp cap based on the electric heating as claimed in claim 11, wherein the cooling device is used for cooling after the daub is solidified, and the cooling device is used for cooling in a mode of spraying gas.

13. The method for mounting the LED lamp cap based on the electric heating as claimed in any one of claims 7 to 12, wherein the raw materials of the daub in parts by weight are as follows:

14. the method for mounting the LED lamp holder based on the electric heating as claimed in claim 13, wherein the daub comprises the following raw materials in parts by weight:

15. the method for mounting the LED lamp holder based on the electric heating as claimed in claim 14, wherein the daub comprises the following raw materials in parts by weight:

16. the method for mounting the LED lamp holder based on the electric heating as claimed in claim 13, wherein the daub comprises the following raw materials in parts by weight:

17. the method for mounting the LED lamp cap based on the electric heating as claimed in any one of claims 7 to 12, wherein the raw materials of the daub in parts by weight are as follows: