CN113410375B

CN113410375B - LED light source module for depilation and LED depilation instrument

Info

Publication number: CN113410375B
Application number: CN202110744103.9A
Authority: CN
Inventors: 黄万富
Original assignee: Shenzhen Cosbeauty Co ltd
Current assignee: Shenzhen Cosbeauty Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-04-29
Anticipated expiration: 2041-06-30
Also published as: WO2023274359A1; CN113410375A

Abstract

The invention is suitable for the optical field of unhairing, has provided a LED light source die set used for unhairing, including metal base plate and ceramic plate welded on metal base plate, it also includes: 2 or more than 2 mutually independent conductive patch areas arranged on the ceramic plate; each conductive patch area is provided with a plurality of mutually connected LED chips and a collinear area for connecting the LED chips in the adjacent conductive patch areas; the area of the conductive patch area is k × nS, the area of the collinear area is t × S, wherein S is the area of a single LED chip, n is the number of the LED chips in the conductive patch area, k is a patch margin coefficient, and t is a connection margin coefficient; the patch margin coefficient k is more than 1.3 and less than or equal to 3.9, and the connection margin coefficient t is more than 0.1 and less than or equal to 3.3. The invention also provides an LED depilating instrument. The areas of the conductive patch area and the collinear area are designed based on the area and the two coefficients of the LED chip, and a compact and miniaturized structure can be formed on the basis of ensuring effective depilation and heat dissipation.

Description

LED light source module for depilation and LED depilation instrument

Technical Field

The invention belongs to the technical field of optical depilation, and particularly relates to an LED light source module for depilation and an LED depilation instrument.

Background

Most of existing household hair removal instruments use laser or IPL (Intense pulsed light) as a light source to remove hair, because the content of melanin in skin hair follicles is high, and melanin has a strong absorption effect on light, when laser or IPL passes through the superficial skin to reach the hair follicle layer, the hair follicles can convert light energy into heat energy, if melanin absorbs the light energy carried by laser or IPL in a short time and converts the light energy into heat energy, the hair follicles can be destroyed or even further killed, so that the hairs in the hair follicles are not regenerated in a short time or for a long time, and the purpose of hair removal is achieved.

Among the appearance that moults based on laser light source, because the laser instrument spectrum is single to the light-emitting window is less, the facula area that laser shines on the skin is less, comparatively concentrated promptly, when mouling to the skin of large tracts of land, need the user to control the appearance that moults voluntarily many times and remove and moult, the operation is comparatively frequent, and the efficiency that moults is comparatively low, and user experience is not good. Moreover, due to the limitation of the area of the light spots, the probability of repeated depilation of the same depilation region is easily increased due to frequent and intensive operations, and the skin risk caused by the overlapping of the light spots is increased. The laser may be damaged by careless operation due to its high energy.

In the hair removal device based on the IPL light source, since the IPL light source is a spontaneous emission light source, the wavelength range of the emitted light is too large, which is about 300-. Light in the short wavelength range is easily harmful to human body, for example, ultraviolet light (300-.

In addition, only a part of the light in the wavelength range (approximately 600-1200nm) of all the light emitted by the IPL light source can be used for depilation, and the light in the wavelength range of 300-600nm does not have depilation effect. Therefore, in the actual usage of the hair removal device with the IPL light source, the harmful light with short wavelength must be filtered by the filter to obtain the light with the desired wavelength range for use, and the utilization rate of the total luminous energy is low.

In view of the above-mentioned drawbacks of the laser light source and the IPL light source, there has been an attempt to apply the LED light source to the hair removal device instead of the laser light source and the IPL light source in the prior art, but when the LED light source is applied to the hair removal device, not only whether the energy output by the LED light source can effectively remove hair, but also the heat dissipation and power consumption of the LED light source are considered.

The effective light-emitting area of the LED light source is the light-emitting area of the LED chip therein, and does not include the area of the non-light-emitting area of the LED light source, it can be understood that the larger the effective light-emitting area of the LED light source is, the larger the heating value and the power consumption are, and if the effective light-emitting area is reduced, although the heating value and the power consumption of the LED light source can be reduced, when depilating a large area of skin, the user needs to frequently operate the depilating apparatus to depilate, the depilating efficiency is low, and the structure of the LED light source is also relatively not compact and miniaturized. Therefore, how to reasonably design the structural parameters and the electrical parameters of the LED light source to balance the relationship between the important factors such as the effective light emitting area, the heat dissipation, the power consumption, and the miniaturization structural requirements of the LED light source is a problem that needs to be mainly solved when the LED light source is applied to the hair removal instrument.

Moreover, since the LED light source is generally used as an illumination light source, in the prior art, the LED chip is generally directly disposed on the PCB, and then the LED chips are directly connected in series or in parallel, but the position relationship of the LED chips and the electrical design such as wiring and wiring may affect the area of the non-light-emitting area of the LED light source, and is directly related to the effective light-emitting area of the LED light source.

Therefore, if the positional relationship of the LED chips is simply designed from the illumination perspective, and the influence of the structural design and the electrical design of the LED chips on important factors such as the effective light emitting area, the heat dissipation, the power consumption, and the miniaturization structural requirement is not considered, the conventional LED light source is difficult to be applied to the hair removal device.

Disclosure of Invention

The embodiment of the invention provides an LED light source module for depilation, and aims to solve the technical problem that the structural design and the electrical design of the existing LED light source are difficult to meet the requirements on effective light-emitting area, heat dissipation, power consumption, miniaturized structure and the like when the LED light source module is applied to a depilation instrument.

The embodiment of the present invention is achieved by providing an LED light source module for hair removal, including a metal substrate and a ceramic plate soldered on the metal substrate, the LED light source module for hair removal further includes:

2 or more than 2 mutually independent conductive patch areas arranged on the ceramic plate;

each conductive patch area is provided with a plurality of mutually connected LED chips and a collinear area for connecting the LED chips in the adjacent conductive patch areas;

the area of the conductive patch area is k × nS, the area of the collinear area is t × S, wherein S is the area of a single LED chip, n is the number of LED chips in the conductive patch area, k is a patch margin coefficient, and t is a connection margin coefficient;

the patch margin coefficient k is more than 1.3 and less than or equal to 3.9, and the connection line margin coefficient t is more than 0.1 and less than or equal to 3.3.

Further, a plurality of the LED chips in each of the conductive patch areas are connected in parallel.

Further, any two of the conductive patch areas are connected in series.

Furthermore, each conductive patch area is provided with 3 parallel-connected LED chips.

Still further, a top electrode of each of the LED chips of the conductive patch area is connected to the collinear region of another of the conductive patch areas.

Furthermore, a plurality of the conductive patch areas are connected to be configured into at least 2 luminous areas which independently or in combination emit light.

Further, the light emitting regions are configured to be 2-25.

Further, the patch tolerance coefficient k satisfies: k is more than 1.3 and less than or equal to 2.1.

Furthermore, the link margin coefficient t satisfies 0.45 < t ≦ 1.9.

The embodiment of the invention also provides an LED depilating instrument, which comprises:

the controller, the driving power supply and the heat dissipation structure; and

the LED light source module for hair removal as described in any one of the above items;

the controller is connected with the driving power supply, the heat dissipation structure and the LED light source module for depilation respectively, and the driving power supply is also connected with the heat dissipation structure and the LED light source module for depilation respectively.

The conductive patch area has the advantages that the area k & ltnS & gt of the conductive patch area is designed based on the effective light-emitting area nS of the LED chip, the area t & ltS & gt of the collinear area is designed based on the area S of the single LED chip, and a space suitable for electrical design such as wiring and routing is reserved for the whole conductive patch area, so that the problem that electrical design such as simple wiring and routing of an LED light source in the prior art cannot be adapted to requirements such as a miniaturized structure, an effective light-emitting area, power density and heat dissipation of a depilating instrument is solved.

The patch margin coefficient k and the connection margin coefficient t are designed in advance according to the requirements of different structures, effective light-emitting areas, depilation energy, heat dissipation and the like when the LED light source module for depilation is applied specifically, the effective light-emitting areas of the LED chips are combined, to determine the areas of the conductive patch area and the collinear area, and after determining the areas of the conductive patch area, the collinear area and the effective light-emitting area, the structural parameters such as the arrangement position, the gap and the like of the LED chip and the electrical parameters such as the wiring and the like can be reasonably designed by combining the actual requirement and the production process at the present stage, the LED light source module for depilation can be designed into a compact and miniaturized structure on the basis of ensuring effective heat dissipation, the requirements on depilating energy, miniaturization, heat dissipation and the like when the LED light source module for depilating is applied to the depilating instrument are further met, and effective application of the LED light source module for depilating in the depilating instrument is realized.

Drawings

FIG. 1 is a schematic plan view of an LED light source module for depilation according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of the LED light source module for depilation shown in FIG. 1 taken along the direction A1-A1;

fig. 3 is a schematic diagram of a control circuit of an LED chip set according to an embodiment of the present invention;

fig. 4 is a schematic plan view of a light emitting region provided by an embodiment of the present invention;

fig. 5 is a schematic plan view of a conductive patch area provided by an embodiment of the invention;

fig. 6 is a schematic plan view of a conductive patch area provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic plan view of a conductive patch area without collinear regions according to one embodiment of the present invention;

fig. 8 is a schematic plan view of a conductive patch area provided in accordance with another embodiment of the present invention;

fig. 9 is a schematic plan view of a conductive patch area without collinear regions according to another embodiment of the present invention;

fig. 10 is a schematic plan view of a conductive patch area provided in accordance with yet another embodiment of the present invention;

fig. 11 is a schematic plan view of a conductive patch area without collinear regions according to yet another embodiment of the present invention;

fig. 12 is an exploded perspective view of an LED hair removal device provided in accordance with an embodiment of the present invention;

fig. 13 is a schematic perspective view of an LED hair removal device provided in an embodiment of the present invention;

fig. 14 is another perspective view of the LED hair removal device provided by the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the prior art, an attempt has been made to apply an LED light source to a depilatory apparatus, and generally, a plurality of LED chips are selected to form the LED light source, and gaps between the plurality of LED chips are shortened as much as possible, so that energy output by the LED light source in a unit area is increased, and the depilatory requirement is met. However, there is a certain technical difficulty in shortening the gaps between the LED chips as much as possible, when the LED chips are closely arranged, there is also a problem of large heat dissipation, and the LED chips are sensitive to temperature, and when the temperature of the LED chips approaches or exceeds the junction temperature, the LED chips may attenuate light, and when the temperature of the LED chips rises, the photoelectric conversion efficiency of the LED chips may be affected, which may affect the energy output of the entire LED light source.

The LED light source is a photo-thermal element, one part of electric power for driving the LED light source to work is converted into light energy by the LED light source from electric energy, and the other part of electric power is converted into heat energy by the electric energy. When the photoelectric conversion efficiency of the LED light source is increased, the amount of heat generation is relatively decreased, and when the photoelectric conversion efficiency of the LED light source is decreased, the amount of heat generation is relatively increased. The photoelectric conversion rate of the existing LED light source is generally between 30 and 40 percent, namely most of power is converted into heat when the LED light source emits light, so that the effective heat dissipation of the LED light source is particularly important.

More, when the heat dissipation of the LED light source is considered, the structural parameter setting and the electrical parameter setting of the LED light source are also considered, because the existing LED light source is generally only used as a lighting source, the structure is relatively simple, the LED chips are in a simple series-parallel connection relation, and the structure of the LED light source is not required to be limited by volume, the volume of the high-power LED light source is generally designed to be larger for meeting the heat dissipation requirement, and the miniaturization of the LED light source is generally difficult to realize while meeting the high-power requirement in the prior art.

Moreover, if the lighting is just realized, the LED chip in the LED light source is generally directly arranged on the PCB, and the electrical parameter design of the LED chip such as wiring, routing and the like meets the normal switch control, and the electrical design of the wiring, the routing and the like is relatively simple and has low requirements.

When the LED light source is used for depilation, in order to output light energy as large as possible in a unit area, the LED chips as many as possible need to be arranged in the unit area, therefore, in a proper range, the smaller the size and the volume of the LED chips are, the better the smaller the size and the volume of the LED chips are, the size of the LED chips used for depilation is obviously reduced compared with the size of the LED chips used as the light source, the centimeter level is directly reduced to the millimeter level or even the nanometer level, and the requirements on electrical design such as wiring and wiring of the LED chips used for depilation are higher and higher.

However, when the distance between the LED chips is too small, the LED chips may be in contact with each other, and cannot be insulated from each other and electrically conducted, which may affect the normal operation of the LED chips. Meanwhile, the requirements of the effective light-emitting area, heat dissipation, power consumption, structure miniaturization and the like of the LED chip are also considered, so that a scheme with comprehensive optimal performance and structure is obtained. If the LED light source for depilation is designed according to the lighting standard of the existing LED light source, it is obviously impossible to achieve the requirement of practical depilation application such as high power, miniaturization, fast heat dissipation, high energy output, etc.

Example one

Referring to fig. 1 to 3, an LED light source module 10 for depilation according to an embodiment of the present invention includes a metal substrate 11 and a ceramic plate 12 soldered on the metal substrate 11. The ceramic plate 12 is provided with 2 or more than 2 mutually independent conductive patch areas 13. Each conductive patch area 13 is provided with a plurality of interconnected LED chips 132, and a common line region 131 for connecting the plurality of LED chips 132 in adjacent conductive patch areas 13. The area of the conductive patch area 13 is k × nS, the area of the collinear area 131 is t × S, wherein S is the area of a single LED chip 132, n is the number of LED chips 132 in the conductive patch area 13, k is a patch margin coefficient, t is a connection margin coefficient, k satisfies 1.3 < k < 3.9, and t satisfies 0.1 < t < 3.3.

In the LED light source module 10 for depilation according to the embodiment of the present invention, the LED light source module 10 for depilation is structurally distributed to the LED chip 132, the ceramic plate 12 and the metal substrate 11 from top to bottom, the metal substrate 11 is used as a bottom layer bearing and heat dissipation structure of the LED light source module 10 for depilation, and the metal substrate 11 has a higher thermal conductivity coefficient, a lower thermal resistance and a higher strength, so that heat generated by the ceramic plate 12 and the LED chip 132 thereon can be effectively conducted out of the LED light source module 10 for depilation, thereby ensuring the heat dissipation effect and normal operation of the LED light source module 10 for depilation, and prolonging the service life.

The ceramic plate 12 is etched with a driving circuit to control 2 or more than 2 mutually independent conductive patch areas 13, and further to accurately and effectively control the plurality of interconnected LED chips 132. Moreover, the ceramic plate 12 also has a better electrical insulation performance, so that 2 or more than 2 conductive patch areas 13 are insulated and independent from each other, and do not interfere with each other during working, thereby further realizing independent control of the conductive patch areas 13.

Meanwhile, the ceramic plate 12 also has a higher thermal conductivity and a lower thermal resistance, so that when the LED chip 132 generates heat, the generated heat can be effectively conducted to the metal substrate 11 for heat dissipation, thereby further improving the heat dissipation effect of the LED chip 132 and ensuring the normal operation of the LED light source module 10 for depilation.

In the embodiment of the present invention, a part of the heat dissipation requirements of the LED light source module 10 for depilation is satisfied by the ceramic plate 12 and the metal substrate 11, another part of the heat dissipation requirements is satisfied by the light emission control of the LED light source module 10 for depilation, and the requirements for depilation energy and miniaturization are satisfied by the specific setting of the conductive patch area 13.

The area of the conductive patch area 13 is designed to be k × nS, the area of the collinear area 131 is designed to be t × S, wherein S is the area of a single LED chip 132, n is the number of LED chips 132 in the conductive patch area 13, k is a patch allowance coefficient, and t is a connection margin coefficient, that is, the area k × nS of the conductive patch area 13 is designed based on the total effective light-emitting area nS of the plurality of LED chips 132, and the area t × S of the collinear area 131 is designed based on the effective light-emitting area S of the single LED chip 132, so that a space suitable for routing and wiring is reserved for the whole conductive patch area 13, and the problem that electrical designs such as simple LED light sources and wiring in the prior art cannot be adapted to the requirements of a miniaturized structure, an effective light-emitting area, depilation energy, heat dissipation and the like of a depilator is solved.

Different structures, effective light-emitting areas, depilation energy, heat dissipation and other requirements of the LED light source module 10 for depilation in specific application are combined to design in advance to obtain a patch tolerance coefficient k and a connection margin coefficient t, the effective light-emitting areas of the LED chips 132 are combined to determine the areas of the conductive patch areas 13 and the collinear areas 131, after the areas of the conductive patch areas 13, the collinear areas 131 and the effective light-emitting areas are determined, structural parameters such as arrangement positions and gaps of the LED chips 132 and electrical parameters such as wiring and the like can be reasonably designed by combining actual requirements and the current-stage production process, the LED light source module 10 for depilation can be designed into a compact and miniaturized structure on the basis of ensuring the effective heat dissipation, enough energy for depilation can be output, and the requirements of energy, heat dissipation and the like when the LED light source module 10 for depilation is applied to a depilation instrument are met, The LED light source module 10 for depilation can be effectively applied to a depilation instrument due to the requirements of miniaturization, heat dissipation and the like.

In the embodiment of the present invention, the ceramic plate 12 may be soldered on the metal substrate 11 through solder paste, and the metal substrate 11 corresponds to the heat dissipation structure of the hair removal device, so as to directly conduct the heat of the LED light source module 10 for hair removal to the heat dissipation structure for heat dissipation, thereby improving the heat dissipation effect of the LED light source module 10 for hair removal. The LED chip 132 can be fixed on the ceramic plate 12 by silver paste, and corresponds to the driving circuit on the ceramic plate 12, so as to realize electrical connection between the LED chip 132 and the ceramic plate 12, and realize subsequent electrical control of the LED light source module 10 for depilation.

In one embodiment, without additional design of the ceramic board 12, the related structures are directly disposed on the ceramic board 12 to form the conductive patch area 13, the collinear area 131 is disposed on the conductive patch area 13, and the LED chips 132 are disposed on the conductive patch area 13 and electrically connected to the ceramic board 12; alternatively, the conductive patch area 13 is directly formed on the ceramic plate 12 without additionally providing other structures on the ceramic plate 12, the collinear area 131 is further provided on the conductive patch area 13, and the LED chip 132 is directly fixed on the ceramic plate 12 by silver paste.

In the embodiment of the present invention, the conductive patch areas 13 are directly formed on the ceramic plate 12, and from the structural point of view, it can be understood that, 2 or more than 2 mutually independent conductive patch areas 13 are formed on the ceramic plate 12, at least 2 areas each attached with a plurality of LED chips 132 are formed on the ceramic plate 12, there are obvious boundaries and divisions between adjacent conductive patch areas 13, and the boundaries between each conductive patch area 13 are in the conditions of no coincidence, no inclusion or no intersection, etc., when two or more continuously distributed conductive patch areas 13 emit light simultaneously, the total effective light emitting area of each conductive patch area 13 is the direct superposition of the light emitting areas of the plurality of LED chips 132 therein. Therefore, the structure of each conductive patch area 13 is convenient to set, and each conductive patch area 13 is independent when emitting light and heating, and has small influence on each other.

In the embodiment of the invention, the ceramic plate 12 is used as a carrier of the conductive patch area 13, based on the structural characteristics of the ceramic plate 12, the ceramic plate 12 has better heat conductivity, insulation capability and electrical characteristics, and the adjacent conductive patch areas 13 are independent and insulated from each other depending on the insulation characteristics of the ceramic plate 12, so that mutual interference cannot occur during working.

And, a plurality of LED chips 132 on every electrically conductive paster district 13 can directly carry out electrical connection and heat dissipation through ceramic plate 12, can specifically be to ceramic plate 12 design and processing and sculpture be used for driving the drive circuit of LED chip 132, every partial drive circuit is connected with a plurality of LED chips 132 in every electrically conductive paster district 13 that corresponds, consequently, can need not additionally to set up other structures on ceramic plate 12 as the electrical connection structure in electrically conductive paster district 13, reduce the structural complexity of the LED light source module 10 that is used for unhairing, the processing procedure to the LED light source module 10 that is used for unhairing has also been reduced simultaneously.

More, a driving circuit for controlling the plurality of conductive patch areas 13 to operate simultaneously or not can be designed on the ceramic board 12 to meet different requirements of the LED light source module 10 for depilation. It is worth noting that the collinear region 131 serves as an electrical connection in the conductive patch area 13, and thus the operation of the conductive patch area 13 is controlled to control the operation (light emission) of the LED chips 132 in the conductive patch area 13, and the operation of the collinear region 131 is not involved.

When the LED chips 132 in the conductive patch areas 13 are controlled to work simultaneously, the light emitting area of the LED light source module 10 for depilation in a single work can be increased, and the depilation efficiency of the LED light source module 10 for depilation can be increased. However, it can be understood that when the plurality of conductive patch areas 13 work simultaneously, the power consumption and the heat dissipation burden of the LED light source module 10 for depilation are also increased simultaneously.

In the embodiment of the present invention, in order to meet the requirements of depilation, power and heat dissipation of the LED light source module 10 for depilation, a plurality of LED chips 132 connected to each other are disposed in the conductive patch region 13, and the plurality of LED chips 132 may be connected in series or in parallel, and may be disposed according to specific requirements.

By connecting the plurality of LED chips 132 to each other, the plurality of LED chips 132 can be simultaneously lit and emit light to output energy sufficient for hair removal. Moreover, the current or voltage of the LED light source module 10 for depilation can be equally divided by the plurality of LED chips 132, so that the problems of large heat productivity, excessive power consumption and the like caused by overhigh current or voltage of the LED chips 132 can be avoided while ensuring that each LED chip 132 normally emits light, and the normal operation of the LED light source module 10 for depilation is ensured.

In the embodiment of the invention, the collinear area 131 for routing and wiring is specially arranged for the plurality of LED chips 132, so that the positions of the LED chips 132 and the electrical structure can be clearly distinguished, electrical design such as routing and wiring is directly performed on the plurality of LED chips 132 based on the position of the collinear area 131, and influence on the structure of the LED chips 132 when the wiring and routing of the plurality of LED chips 132 are designed is avoided.

Each LED chip 132 on one conductive patch area 13 is connected to a collinear area 131 of another conductive patch area 13 through a wire, and the other end of each LED chip 132 is connected to the collinear area 131 of the conductive patch area 13 where the LED chip 132 is located, so that the adjacent conductive patch areas 13 are electrically connected through the wire while being insulated from each other based on the ceramic plate 12, and current is input from the collinear area 131 of one conductive patch area 13, transmitted to the plurality of LED chips 132 therein through the conductive patch area 13 to which the collinear area 131 belongs, and then transmitted to the collinear area 131 of another conductive patch area 13 through the plurality of LED chips 132 and the connected wire, so as to realize normal driving of the plurality of conductive patch areas 13.

Meanwhile, other structures are not arranged on the collinear region 131, which can also help the plurality of LED chips 132 in the belonging conductive patch region 13 to dissipate heat.

In the embodiment of the present invention, the plurality of conductive patch areas 13 are independent from each other, and may be understood as:

from the structural point of view, the plurality of LED chips 132 in a single conductive patch area 13 are grouped as a group, and the whole formed by the plurality of LED chips 132 in one conductive patch area 13 and the other whole formed by the plurality of LED chips 132 in the other conductive patch area 13 are relatively independent from each other;

from an electrical perspective, the electrical structures (e.g., circuits) of the LED chips 132 in a single conductive patch area 13 are a group and are designed as a whole, and one whole electrical structure formed by the LED chips 132 in one conductive patch area 13 and another whole electrical structure formed by the LED chips 132 in an adjacent conductive patch area 13 are relatively independent from each other.

In the embodiment of the present invention, when designing the specific structure of the LED light source module 10 for depilation, firstly, it needs to consider whether the energy output to a unit area by the LED light source module 10 for depilation in a unit time can be effectively used for depilation, and at this time, the number n and the area S of the LED chips 132 need to be designed first, that is, the effective light emitting area of one conductive patch area 13 is determined, which is the first point whether the LED light source module 10 for depilation can output enough energy.

Meanwhile, considering the gap between the LED chips 132 in the same conductive patch region 13 and the width of the process edge 134 reserved at two edges or four edges of the LED chip 132 (or called extension width, in the embodiment of the present invention, the process edge 134 is reserved at the peripheral edge of the LED chip 132), the LED light source module 10 for depilation is designed to be a compact and miniaturized structure, which is the second point whether the LED light source module 10 for depilation can output sufficient energy.

And then, by combining the pre-designed patch margin coefficient k and the connection margin coefficient t, and considering the specific shapes of the conductive patch area 13 and the LED chip 132, the distribution positions of the LED chips 132, and the like, the area of the conductive patch area 13 and the area of the collinear area 131 are obtained based on the above parameters, so as to form the LED light source module 10 for depilation meeting the heat dissipation requirement and the depilation requirement.

Specifically, the patch tolerance coefficient k may be understood as a ratio of an area of the conductive patch area 13 to an effective light emitting area of the LED chip 132 disposed therein, where the patch tolerance coefficient k may also laterally reflect a ratio of areas of other areas (or other spaces called the conductive patch area 13) in the conductive patch area 13 except the effective light emitting area of the LED chip 132, where the areas of the other areas are areas of areas accommodating other structures on the conductive patch area 13, and the areas of the conductive patch area 13 and the effective light emitting area of the LED chip 132 directly determine the areas of the other areas, and also directly determine the patch tolerance coefficient k, or the areas of the conductive patch area 13 and the other spaces of the conductive patch area 13 are directly determined by the effective light emitting area of the LED chip 132 and the patch tolerance coefficient k.

It can be understood that, the larger the value of the patch tolerance coefficient k is, the larger the area of the conductive patch area 13 is, the smaller the proportion of the area (i.e., the effective light emitting area) of the LED chip 132 in the conductive patch area 13 is, the larger the free area in the conductive patch area 13 is, the more the structures of the conductive patch area 13 and the LED light source module 10 for depilation are, and the energy of the LED light source module 10 for depilation in a unit area is relatively reduced; the smaller the value of the patch margin coefficient k is, the smaller the area of the conductive patch area 13 is, the larger the proportion of the area of the LED chip 132 in the conductive patch area 13 is, the smaller the free area in the conductive patch area 13 is, the more compact and integrated the structures of the conductive patch area 13 and the LED light source module 10 for depilation are, and the energy of the LED light source module 10 for depilation in a unit area can be improved.

In designing the LED light source module 10 for depilation, the size and number of the LED chips 132 are generally designed and determined, please refer to fig. 1, fig. 4 and fig. 5, for convenience of calculation and description, in the embodiment of the invention, the side length L1 of the LED chip 132 is 1mm (i.e. the area S of a single LED chip is 1 mm)²) The number n of the LED chips 132 is 3, the conductive patch area 13 and the LED chips 132 are both square, the 3 LED chips are equidistantly distributed at the upper left corner, the upper right corner and the lower left corner of the conductive patch area 13, the collinear area 131 is located at the lower right corner of the conductive patch area 13, and an LED light source module 10 for depilation includes 40 conductive patch areas 11, and the structural composition and parameter setting are examples.

Please refer to table 1 below (it can be understood that there is a certain discrepancy between the values in the actual processing process and the values in the preliminary design calculation process, and the patch margin coefficient k is calculated as an integer in the embodiment of the present invention), in order to ensure that there is enough space in the conductive patch area 13, a plurality of LED chips 132 and the collinear area 131 are arranged, and since there is a limitation of the actual production processing process, k must be greater than 1, which is specifically described below in conjunction with different specific values of the patch margin coefficient k within a numerical range of "1.3 < k ≦ 3.9":

the area S1 of the conductive patch region 13 is k × nS, and S1 is also equal to the square of the side length L2 of the conductive patch region 13, i.e., (L2)²And L2 ═ L1+ L3+4L4, (L3) is the gap between the LED chips 132, L4 is the width of the process edge 134, and is generally a fixed value, the area S2 of the LED light source module 10 for depilation is 40 ═ S1, the ratio of the effective light emitting area in the conductive patch region 13 is 3S/S1:

TABLE 1

1. When k is 1.4, the area S1 of the conductive patch region 13 is 1.4 × 3 × 1mm²＝4.2mm²Meanwhile, S1 is also equal to (L2)²＝(2*L1+L3+4L4)²＝(2mm+L3+4L4)²Thus, therefore, it is

L3+4L4 ≈ 0.05mm, and if L3 ═ L4 ≈ 0.01mm, the above relationship is just satisfied. At this time, the effective light emitting area of the conductive patch area 13 is 0.03cm²(3mm²) The effective light-emitting area accounts for 3mm in the conductive patch area 13²÷4.2mm²71.43%, the area S2 of the LED light source module 10 for depilation is 40 × 4.2mm²＝168mm²。

Assuming that the power of a single LED chip 132 is 0.8W and the current is 1A, the total power of 3 LED chips 132 is 2.4W, and the optical power density of the conductive patch area 13 is 2.4W/0.042 cm²≈57.14W/cm²Assuming that the radiation time of the conductive patch area 13 to the skin is 0.02s, the energy density is 57.14W/cm²*0.02s≈11.43J/cm²；

At this time, the gap between the LED chips 132 and the width of the process edge 134 of the LED chip 132 are very small, and although the optical power density and the effective light emitting area of the conductive patch area 13 in a unit area are improved as much as possible, the electrical setting difficulty of routing and wiring of the LED chip 132 is also very large, and the general processing process may be difficult to meet the manufacturing requirement.

2. When k is 2.1, the area S1 of the conductive patch region 13 is 2.1 × 3 × 1mm²＝6.3mm²Meanwhile, S1 is also equal to (L2)²＝(2*L1+L3+4L4)²＝(2mm+L3+4L4)²I.e. by

L3+4L4 ≈ 0.51mm, and if L3 ═ L4 ≈ 0.1mm is assumed, the above relationship is just satisfied. At this time, the effective light emitting area of the conductive patch area 13 is 0.03cm²(3mm²) The effective light-emitting area accounts for 3mm in the conductive patch area 13²÷6.3mm²47.62%, and the area S2 of the LED light source module 10 for depilation is 40 × 6.3mm²＝252mm²。

Assuming that the power of a single LED chip 132 is 0.8W and the current is 1A, the total power of 3 LED chips 132 is 2.4W, and the optical power density of the conductive patch area 13 is 2.4W/0.063 mm²≈38.10W/cm²The energy density is 38.10W/cm²*0.02s≈7.62J/cm²；

However, as the value of the patch tolerance coefficient k and the gap between the adjacent LED chips 132 increase, the heat dissipation effect can be improved to some extent, and meanwhile, the ratio of the optical power density to the effective light emitting area of the conductive patch region 13 decreases, the overall size of the LED light source module 10 for depilation also increases, and the total depilation area increases.

3. When k is 3.9, the area S1 of the conductive patch area 13 is 3.9 × 3 × 1mm²＝11.7mm²Meanwhile, S1 is also equal to (L2)²＝(2*L1+L3+4L4)²＝(2mm+L3+4L4)²I.e. by

L3+4L4 ≈ 1.42mm, and assuming that L4 ≈ 0.1mm, L3 ≈ 1mm, the above relationship is just satisfied. At this time, the effective light emitting area of the conductive patch area 13 is 0.03cm²(3mm²) Effective light-emitting area on the conductive patchThe ratio in the sheet region 13 is 3mm²÷11.7mm²25.64%, the area S2 of the LED light source module 10 for depilation is 40 × 11.7mm²＝468mm²；

Assuming that the power of a single LED chip 132 is 0.8W and the current is 1A, the total power of 3 LED chips 132 is 2.4W, and the optical power density of the conductive patch area 13 is 2.4W/11.7 mm²≈20.51W/cm²The energy density is 20.51W/cm²*0.02s≈4.1J/cm²；

However, as the value of the patch tolerance coefficient k and the gap between the adjacent LED chips 132 increase to a larger value, the heat dissipation effect can be improved to a certain extent, and meanwhile, the reduction range of the ratio of the optical power density to the effective light emitting area of the conductive patch region 13 is larger, the increase range of the overall size of the LED light source module 10 for depilation is also larger, and the total depilation area is further increased.

Before the LED light source module 10 for depilation is actually produced and manufactured, when the effective light emitting area S of a single LED chip 132 is fixed, the range of k is designed through the above process for different structure compositions, effective light emitting areas, optical power densities, heat dissipation, processing technologies, electrical designs and other requirements, and then parameters such as the gap L2 between the LED chips 132 and the width L4 of the process edge 134, which affect the structure composition of the conductive patch area 13, are reasonably designed by taking different values of k and combining the effective light emitting area S of the single LED chip 132, so that the structures of the conductive patch area 13 and the LED light source module 10 for depilation are reasonably designed, and the requirements on the effective light emitting area and the optical power density during depilation are further met.

The above selection and arrangement of the factors of the position relationship, the number, the shape, the size, etc. of the conductive patch area 13 and the LED chip 132 are only examples in the embodiment of the present invention. Of course, in other embodiments, factors such as the position relationship, the number, and the size of the conductive patch area 13 and the LED chip 132 may be selected and set differently, so as to obtain the conductive patch area 13 and the LED light source module 10 for depilation meeting the requirements of the effective light emitting area, the heat dissipation, the power consumption, the miniaturized structure requirement, and the like, which are specifically designed in the actual embodiment.

The connection margin coefficient t may be understood as a ratio of an area of the conductive patch area 13 for wiring and routing to an area of the single LED chip 132, and the area of the collinear area 131 and the connection margin coefficient t are directly determined by the area of the conductive patch area 13 and an effective light emitting area of the LED chip 132, or the area of the collinear area 131 is also directly determined by the connection margin coefficient t and the area of the LED chip 132.

The connection margin coefficient t may also reflect the relationship between the structures in the conductive patch area 13 from the side, specifically, when the area of the conductive patch area 13 is fixed to the area of the single LED chip 132, the proportion of the multiple LED chips 132 occupying the conductive patch area 13 is fixed, and the optical power density output in the unit area is fixed to the effective light emitting area, at this time:

the larger the connection margin coefficient t is, the larger the area of the collinear region 131 is, the smaller the vacant area (the area occupied by the gaps and/or the process edges 134 among the LED chips 132) in the conductive patch region 13 is, that is, the smaller the gaps and/or the process edges 134 among the LED chips 132 are, the more compact the internal structure of the conductive patch region 13 is, but the higher the mounting process difficulty for the LED chips 132 is, the simpler the electrical design of the collinear region 131 such as wiring and routing is;

the smaller the connection margin coefficient t is, the smaller the area of the collinear region 131 is, the larger the vacant area in the conductive patch region 13 is, that is, the larger the gap and/or the process edge 134 between the LED chips 132 is, the looser the structures of the conductive patch region 13 and the LED light source module 10 for depilation are, the lower the difficulty of the mounting process for the LED chips 132 is, but the more difficult the electrical design of the conductive patch region 13 in the collinear region 131 is.

When designing the LED light source module 10 for depilation, the size, number, shape, etc. of the LED chips 132 are generally designed and determined, and after determining the size and shape of the LED chips 132, the area S of a single LED chip 132 can be determined, and at this time, the area S3 of the collinear region 131 can be determined as t × S. Since the area S2 of the chip conductive region 13 includes the area of the collinear region 131, S2 ═ k × nS ═ n × S + t × S + S4, where S4 is the area of the conductive chip region 13 occupied by the gaps between the LED chips 132, the vacant regions such as the process edges 134 of the LED chips 132, and the like.

In order to ensure that the collinear region 131 has a certain area to implement the routing and routing of the conductive patch region 13, the collinear region 131 must be larger than 0, and if the area of the collinear region 131 is too small, the routing and routing are difficult, so in the embodiment of the present invention, the area of the collinear region 131 is at least 0.1 times of the area of a single LED chip 132.

Please refer to table 1 and table 2 above, assuming that the patch tolerance coefficient k is a fixed value of 2.1, the area S of the single LED chip 132 is 1mm²The area S1 of the conductive patch area 13 is fixed and 6.3mm²Assuming that the power of a single LED chip 132 is 0.8W, the optical power density of the conductive patch region 13 is constant, i.e., (3 × 0.8W)/6.3mm²＝38.4W/cm²。

TABLE 2

Based on the structural composition and parameter setting of the LED chip 132 and the conductive patch area 13 related in the above description example of the patch tolerance coefficient k, a specific description will be given when the connection margin coefficient t is different specific values within a numerical range of "0.1 < t ≦ 3.3":

1. when the margin coefficient t of the connecting line is 0.2, the margin coefficient t of the connecting line is minimum, and the area S3 of the collinear region 131 is 0.2mm 1mm²＝0.2mm²The ratio of the collinear region 131 in the conductive patch region 13 is S3/S1-0.2 mm²/6.3mm²The occupied ratio is about 3.17%, the occupation ratio in the conductive patch area 13 is minimum, and the difficulty in electrical design such as wiring and routing of the collinear area 131 is the largest at the moment;

the area of the vacant region S4 ═ S1-3 ═ S-t ═ S ═ 6.3mm²-3*1mm²-0.2*1mm²＝3.1mm²The occupation ratio of the vacant area in the conductive patch area 13 is S4/S1 approximately equal to 49.21%, the occupation ratio is the largest in approximately half of the space in the conductive patch area 13, and the difference is the largest compared with the occupation ratio of the common line area 131At this time, the space occupied by the gaps and/or the process edges 134 between the LED chips 132 in the conductive patch region 13 is the largest, the numerical values of the gaps and/or the process edges 134 between the LED chips 132 are the largest, and the difficulty of the mounting process between the LED chips 132 is relatively the lowest.

2. When the margin coefficient t of the connecting line is 1.7, the margin coefficient t of the connecting line is moderate, and the area S3 of the collinear region 131 is 1.7mm²＝1.7mm²The ratio of the collinear region 131 in the conductive patch region 13 is S3/S1-1.7 mm²/6.3mm²Approximately equals to 26.98 percent, the proportion in the conductive patch area 13 is moderate, and the wiring, routing and other electrical design difficulty of the collinear area 131 is moderate at the moment;

the area of the vacant region S4 ═ S1-3 ═ S-t ═ S ═ 6.3mm²-3*1mm²-1.7*1mm²＝1.6mm²The proportion of the vacant area in the conductive patch area 13 is about 25.4% in a ratio of S4/S1, the proportion in the conductive patch area 13 is moderate and is close to the proportion in the common line area 131, the space occupied by the gaps and/or the process edges 134 between the LED chips 132 in the conductive patch area 13 is moderate, the numerical values of the gaps and/or the process edges 134 between the LED chips 132 are moderate, and the mounting process difficulty between the LED chips 132 is moderate.

3. When the margin coefficient t of the connecting line is 1.9, the margin coefficient t of the connecting line is moderate, and the area S3 of the collinear region 131 is 1.9mm²＝1.9mm²The ratio of the collinear region 131 in the conductive patch region 13 is S3/S1-1.9 mm²/6.3mm²About 30.16%, the proportion in the conductive patch area 13 is moderate, and the wiring, routing and other electrical design difficulty of the collinear area 131 is moderate;

the area of the vacant region S4 ═ S1-3 ═ S-t ═ S ═ 6.3mm²-3*1mm²-1.9*1mm²＝1.4mm²The proportion of the vacant areas in the conductive patch area 13 is about 22.22% in a ratio of S4/S1, the proportion in the conductive patch area 13 is moderate and is smaller than the proportion in the common line area 131, the space occupied by the gaps and/or the process edges 134 between the LED chips 132 in the conductive patch area 13 is moderate, the value of the gaps and/or the process edges 134 between the LED chips 132 is moderate, and the difficulty of the mounting process between the LED chips 132 is moderate.

4. When the margin coefficient t of the connecting line is 3.3, the margin coefficient t of the connecting line is the maximum, and the area S3 of the collinear region 131 is 3.3mm 1mm²＝3.3mm²The ratio of the collinear region 131 in the conductive patch region 13 is S3/S1-3.3 mm²/6.3mm²Approximately equals 52.38%, the occupation ratio in the conductive patch area 13 is the largest, and the difficulty of electrical design such as wiring and routing of the collinear area 131 is relatively lowest at this time;

the area of the vacant region S4 ═ S1-3 ═ S-t ═ S ═ 6.3mm²-3*1mm²-3.3*1mm²＝0mm²The occupation ratio of the vacant areas in the conductive patch area 13 is S4/S1 is 0, the occupation ratio in the conductive patch area 13 is minimum, the difference between the occupation ratio and the occupation ratio of the collinear area 131 is maximum, the space occupied by the gaps between the LED chips 132 and/or the process edges 134 in the conductive patch area 13 is minimum and is completely occupied by the collinear area 131, the numerical value of the gaps between the LED chips 132 and/or the process edges 134 is 0, and the mounting process difficulty between the LED chips 132 is relatively maximum.

Before the LED light source module 10 for depilation is actually produced and manufactured, when the effective light emitting area S of a single LED chip 132 is fixed, the range of t is designed through the above process for different structure compositions, effective light emitting areas, optical power densities, heat dissipation, electrical design and other requirements, and then the relation among the values of the area S1 of the conductive patch area 13, the gap L3 among the plurality of LED chips 132, the width L4 of the process edge 134 and other values is balanced by taking different values of t and combining the effective light emitting area S of the single LED chip 132 into consideration of the value of the patch tolerance coefficient k, so that the conductive patch area 13 and the LED light source module 10 for depilation satisfy the above requirements.

Generally speaking, the occupation ratio of the collinear region 131 in the conductive patch region 13 can be controlled to be slightly higher than the occupation ratio of the vacant space in the conductive patch region 13, so that the area of the collinear region 131 is large enough to facilitate electrical arrangement of wiring and routing of the collinear region 131, and meanwhile, the gaps between the LED chips 132 and/or the numerical values of the process edges 134 are moderate, so that the LED light source module 10 for depilation is optimal in combination of structural compactness, optical power density, effective light emitting area, processing difficulty, cost and the like.

It should be noted that the total area of the LED light source module 10 for hair removal includes the area occupied by the peripheral edges, some gap areas, and the like in addition to the areas of the plurality of conductive patch areas 13, for convenience of calculation and description, in the embodiment of the present invention, the area S2 of the LED light source module 10 for hair removal is roughly calculated by an integral multiple of the area S of the conductive patch areas 13, and in practical product applications, the area S2 of the LED light source module 10 for hair removal should be larger than the total area of all the conductive patch areas 13 therein.

In one embodiment, the metal substrate 11 may be made of a metal with high thermal conductivity and good thermal conductivity, such as copper, aluminum, silver, gold, and some alloys.

In the embodiment of the present invention, the metal substrate 11 is a copper substrate 11.

The heat conductivity coefficient of copper is about 500W/mK at normal temperature, and compared with other metals, the heat conductivity of copper is more excellent. In general, the copper substrate 11 is a unique metal-based copper-clad plate, has good thermal conductivity, electrical insulation property and machining property, is relatively low in price, and can control the production cost.

In the related art, the ceramic board 12 refers to a special process board in which copper foil is directly bonded to the surface (single or double side) of an alumina (Al2O3) or aluminum nitride (AlN) ceramic substrate at a high temperature, has excellent electrical insulation properties, high thermal conductivity, excellent solderability, and high adhesion strength, can be etched into various patterns and circuits like a PCB board, has a large current carrying capacity, and is an excellent material for manufacturing high-power electronic circuits.

And, depending on the excellent thermal conductivity of the ceramic plate 12, when the ceramic plate is used for arranging the LED chip 132, the package of the LED chip 132 can be made compact, so that the power density is greatly improved, and the reliability of the LED light source module 10 for depilation is improved.

In the present embodiment, the ceramic plate 12 is aluminum nitride.

Compared with aluminum oxide, aluminum nitride has an expansion coefficient matched with that of Si, and the substrate of the LED chip 132 is made of silicon material, so that the aluminum nitride can be well matched with the LED chip 132, and the service life of the LED chip 132 is prolonged.

More, the LED chips 132 are generally square and regular, and the LED chips 132 are arranged in an array to form a regular shape, so that the conductive patch area 13 is preferably shaped to form an ordered array, such as a square or a rectangle, to match the shape of the LED chips 132.

So, can arrange closely relatively between the conductive patch area 13, also promote the space utilization in LED chip 132 to conductive patch area 13 simultaneously, reduce the clearance between the LED chip 132 and between the conductive patch area 13, be favorable to being used for the compactness and the integration of the LED light source module 10 that moults to the whole LED light source module 10 that is used for moults sends also more evenly, promotes the effect of mouling.

Further, in the embodiment of the present invention, the LED chip 132 has a vertical structure.

In the field of LED light sources, the LED chip 132 with a vertical structure has the advantages of high probability, high light efficiency, good heat dissipation, etc., and is a preferred choice for manufacturing an LED light source module 10 with high power density, and is a preferred choice for manufacturing an LED light source module 10 for depilation. The specific process flow of the LED chip 132 with the vertical structure is as follows: after a GaN epitaxial layer grows on a sapphire substrate, a metal reflector is evaporated on the surface of p-GaN, then the GaN epitaxial layer is transferred to a new metal substrate with good heat conduction and electric conduction properties by adopting a wafer bonding technology or a method of electroplating the metal substrate, the original sapphire substrate is stripped by utilizing substrate stripping technologies such as laser stripping or chemical wet stripping, and the n-GaN layer is exposed, and finally an electrode is manufactured on the surface of n-GaN to form the LED chip 132 with a vertical structure.

Because the p and n electrodes of the vertical-structure LED chip 132 are vertically distributed on the upper and lower sides of the active layer, the active region does not need to be etched to realize n-type ohmic contact, and the current is vertically propagated between the electrodes, thereby avoiding the problems of current aggregation and uneven distribution in the lateral structure. In addition, the LED chip 132 with the vertical structure has a good heat dissipation effect by being transferred onto a substrate with good thermal conductivity. In addition, the LED chip 132 with the vertical structure only needs one gold thread, the packaging process is simple, the reliability of the LED chip 132 is improved, and the packaging cost is reduced.

Therefore, the LED chip 132 with the vertical structure is more suitable for the high-power solid-state illumination light source, but because the manufacturing process of the LED chip 132 with the vertical structure is relatively complex and has more technical difficulties, the LED chip 132 with the vertical structure is not often used as a common illumination light source at present, and the LED chip 132 with the vertical structure is only used in some specific occasions, such as the LED light source module 10 for depilation according to the embodiment of the present invention, so as to satisfy the requirement of using the LED light source module 10 for depilation.

Of course, in other embodiments, the LED chip 132 may also have other structures, such as a vertical plane structure, a planar structure, or a flip-chip structure, so as to improve the applicability of the LED light source module 10 for depilation.

Furthermore, in the embodiment of the present invention, the light emitting wavelength of the LED chip 132 is 600-1000 nm.

It can be understood that the wavelength of the light emitted by each LED chip 132 is fixed, and therefore, in the embodiment of the present invention, the light emitting wavelength of the LED chip 132 is 600-. In addition, the LED chip 132 can be designed to emit a desired wavelength with high precision by the existing manufacturing technology of the LED chip 132.

Different from the light with a wide range of wavelengths emitted by the conventional IPL light source, the LED chip 132 with the wavelength range of 600-1000nm is selected to emit the light with a specific wavelength for depilation in the embodiment of the present invention, so as to reduce the waste of the light with useless wavelengths for depilation, reduce the heat dissipation burden of the LED light source module 10 for depilation, remove the light harmful to the human body such as ultraviolet light, etc., improve the safety of the LED light source module 10 for depilation, and further improve the safety of the depilation instrument using the LED light source module 10 for depilation.

In one embodiment, the wavelengths of the plurality of LED chips 132 may be the same or different.

Specifically, the wavelengths of the LED chips 132 in one conductive patch area 13 are the same or different, or the wavelengths of the LED chips 132 in a plurality of conductive patch areas 13 are the same or different, so that the LED light source module 10 can be applied to different use scenes of the LED light source module 10 for depilation through the combination of different LED chips 132.

The LED chips 132 with different wavelengths are arranged to adjust the energy output by the LED light source module 10 for depilation, so that the energy or penetration strength of the light emitted from a part of the LED light source module 10 for depilation is higher, and the depilation effect of the part is improved. Preferably, the LED chip 132 having a wavelength range close to that of the main LED chip 132 is used, so that the difference between the energy outputs of the two parts is not large due to the difference between the used wavelength and the wavelength range of the main LED chip 132, and the depilated part of the user is not uniform.

Specifically, when the LED chips 132 with different wavelengths from the LED chips 132 mainly used for depilation are used, the LED chips 132 with different wavelengths may be disposed together, for example, disposed as the same conductive patch area 13, and the conductive patch area 13 may be independently controlled to be turned on, so as to be distinguished from the LED chips 132 mainly used for depilation, thereby facilitating the production setting of the LED light source module 10 for depilation, and simultaneously enabling a user to clearly know that a certain conductive patch area 13 is used for realizing other functions. When a user needs to send out the set light to realize a specific function by the LED light source module 10 for hair removal, the wavelength is independently controlled by setting software or hardware to emit light to the other conductive patch regions 13, so as to meet the specific requirements of the user.

For example, on the basis that the LED chips 132 of the LED light source module 10 for depilation mostly have a wavelength of 808nm or 810nm, a set number of LED chips 132 having a wavelength of 630nm or 650nm may be disposed in the LED light source module 10 for depilation, and a specific functional region is formed in the LED light source module 10 for depilation, or mixed with the LED chips 132 having a wavelength of 808nm or 810nm, so as to implement a specific function while depilation.

Specifically, the light with the wavelength of 630nm and 650nm is infrared light, which can generate a warming effect when irradiating the skin. Under the irradiation of infrared light, the vitality and the regeneration capability of tissue cells are improved, the blood circulation can be improved, the swelling can be eliminated, the inflammation dissipation can be promoted, and the wound healing can be accelerated. Infrared light can also reduce excitability of nervous system, and has effects of relieving pain, relieving spasm of striated muscle and smooth muscle, and promoting recovery of nerve function.

Example two

Referring to fig. 1 to fig. 3, further, on the basis of the first embodiment, in the embodiment of the present invention, the LED chips 132 in each conductive patch area 13 are connected in parallel.

Specifically, as can be seen from the definition of parallel connection, the voltages of the LED chips 132 are the same, and the LED chips 132 equally share the current flowing through the conductive patch area 13. Thus, the voltage of the conductive patch area 13 can be prevented from being too high when the LED chips 132 are simultaneously turned on, and the power consumption and the heat dissipation burden of the LED light source module 10 for depilation in unit time can be prevented from being too high. Moreover, the current flowing through the single LED chip 132 is not too large, so as to ensure the electrical safety of the LED light source module 10 for depilation.

Each LED chip 132 is a "leg" that can be individually controlled. When one LED chip 132 is damaged, the operation of the other LED chips 132 is not affected, and the normal operation of most structures of the LED light source module 10 for depilation is ensured. The collinear region 131 includes both the actual structure of a part of the ceramic substrate 12 and the circuit structure disposed in the part of the ceramic substrate 12, the collinear region 131 may be understood as a "trunk" of the conductive patch region 13, and the collinear region 131 is connected to the LED chips 132 of the previous conductive patch region 13 through wires, so as to meet the requirement of the electrical connection between the adjacent conductive patch regions 13 and the requirement of the production process of the conductive patch region 13. When the collinear region 131 is damaged, none of the LED chips 132 is lit, and in the case where one or more of the LED chips 132 are not lit, the cause of the failure can be determined with specificity.

In one embodiment, the LED chips 132 in each conductive patch region 13 can also be arranged in series to improve the applicability of the LED light source module 10 for depilation.

EXAMPLE III

Referring to fig. 1 to 4, further, on the basis of the second embodiment, in the embodiment of the present invention, any two conductive patch areas 13 are connected in series.

In the embodiment of the present invention, in the y-axis direction shown in fig. 1, two adjacent conductive patch areas 13 are connected in series, and the series connection between the adjacent conductive patch areas 13 is actually that a plurality of LED chips 132 of the adjacent conductive patch areas 13 are connected in series after being connected in parallel, so as to form a basic series-parallel relationship inside the LED light source module 10 for depilation.

According to the definition of the series connection, any two conductive patch areas 13 form a 'main circuit', and each conductive patch area 13 shares the voltage of the corresponding area together, because the LED light source module 10 for depilation has a set area to emit light during operation, the voltage of the corresponding area of any two conductive patch areas 13 is actually the voltage of the power supply connected to the LED light source module 10 for depilation, and the current flowing through each conductive patch area 13 is the same.

Thus, the voltage distributed to each conductive patch area 13 is not too high, but the current flowing through each LED chip 132 in the conductive patch area 13 is high enough, so that the electrical safety of the LED chips 132, the conductive patch areas 13 and the LED light source module 10 for depilation is ensured on the premise of ensuring the normal operation of the LED chips 132 in the conductive patch areas 13.

In addition, compared with the arrangement of a single conductive patch area 13, the structure formed by any two conductive patch areas 13 arranged in series can provide the most basic light-emitting area and energy output, meet the most basic unhairing requirement of the LED light source module 10 for unhairing, and ensure the normal work of the LED light source module.

In one embodiment, any two conductive patch areas 13 can also be connected in parallel to improve the applicability of the LED light source module 10 for depilation.

Example four

Referring to fig. 1 to fig. 3, further, on the basis of the third embodiment, in the embodiment of the present invention, each conductive patch area 13 is provided with 3 LED chips 132 connected in parallel.

Specifically, please refer to fig. 1 and fig. 3, on the surface structure of the LED light source module 10 for depilation, 3 LED chips 132 are equidistantly disposed on the ceramic plate 12 to form a basic light emitting array of the LED chips 132, and the parallel connection relationship of the 3 LED chips 132 is realized by designing the spare collinear region 131 in the conductive patch region 13, wherein the area of the collinear region 131 is sufficient for the 3 LED chips 132 to be electrically designed, and the size and the position of the 3 LED chips 132 are not affected.

Moreover, the connection between the 3 LED chips 132 arranged in parallel is convenient, and the formed conductive patch area 13 and the LED light source module 10 for depilation have compact structures, which is beneficial to the compactness and miniaturization of the LED light source module 10 for depilation.

Please refer to the description of the shapes of the LED chip 132 and the conductive patch area 13 in the first embodiment, taking the LED chip 132 and the conductive patch area 13 as squares as an example: even interval of 3 LED chips 132 sets up in the upper left corner, the lower left corner and the upper right corner of electrically conductive paster district 13, and the lower right corner is collinear region 131's position, and when being connected to collinear region 131 of next electrically conductive paster district 13 through the wire with 3 LED chips 132, the region that 3 wires crossed can not be too much, can not influence the effective luminous area of LED chip 132, the LED chip 132 of being convenient for simultaneously walk line and wiring.

More, when the number of the LED chips 132 in one conductive patch area 13 is 4 or more, because the conductive patch area 13 needs to be maintained in a compact structure to meet the requirement of optical power density, the LED chips 132 of 4 or more still need to be arranged in a tight array, in order to realize two setting modes of electrical connection of the LED chips 132 of 4 or more, a collinear area 131 or external positive and negative electrodes are designed in the conductive patch area 13 to be connected with the LED chips 132, and the following explanation is specifically made when the number of the LED chips 132 is 4:

1. when the conductive patch region 13 is designed to be collinear region 131:

from the perspective of basic structure design, the 4 LED chips 132 can be designed into a regular array, and then the position and shape of the collinear region 131 can be additionally designed for the structure of the 4 LED chips 132. Please refer to fig. 6, 8 and 10, the 4 LED chips 132 may be a regular array as shown in fig. 6, 8 and 10, and at this time, not only the position and shape of the collinear region 131 need to be designed additionally to match the shape of the 4 LED chips 132, but also the process edge required to be reserved on the peripheral edge of the LED chip 132 when mounting the LED chip 132 is increased every 1 LED chip 132 is added, so as to increase the processing difficulty of the conductive patch region 13 and the LED light source module 100 for depilation. If the gap between the LED chips 132 is small, the process edges of the adjacent LED chips 132 may be contacted, so that the LED chips 132 are electrified and cannot be insulated from each other, thereby affecting the normal operation of the LED chips 132;

in addition, although the total light emitting area is increased by adding one LED chip 132, the ratio of the process edge of a single LED chip 132 to the required gap in the conductive patch area 13 and the ratio of the collinear area 131 in the conductive patch area 13 are also significantly increased, which in general reduces the optical power density and the effective light emitting area of the conductive patch area 13 and the LED light source module 100 for depilation;

from the electrical perspective, the 4 LED chips 132 are arranged in parallel, that is, the current of the conductive patch area 13 is equally divided by the 4 LED chips 132, in order to meet the electrical driving of the LED chips, the current input needs to be increased, the conductive patch areas 13 are connected in series, and the conductive patch areas 13 are equally divided by the voltage of the LED light source module 100 for depilation, so that the power requirement of the whole LED light source module 100 for depilation is increased;

2. when external positive and negative electrodes are connected with the LED chip 132:

from the perspective of basic structural design, 4 LED chips 132 are still designed into a regular array, then positive and negative electrodes are respectively designed on two sides of the LED chip 132 array and are respectively connected with the positive and negative electrodes of the LED chip 132, and the external positive and negative electrodes are connected to the substrate 20 or other structures;

please refer to fig. 7, 9 and 11, the 4 LED chips 132 may be a regular array as shown in fig. 7, 9 and 11, and at this time, not only the positions of the external positive and negative electrodes need to be designed additionally to match the shapes of the 4 LED chips 132, but also the external positive and negative electrodes occupy the space of the LED light source module 100 for depilation to reduce the effective light emitting area and the optical power density thereof, and also increase the structural complexity of the LED light source module 100 for depilation;

from the electrical perspective, since the external positive and negative electrodes are independent from the conductive patch area 13, the electrical connection and circuit layer design between the external positive and negative electrodes and the conductive patch area are more complicated, the structural relationship and the electrical relationship between the external positive and negative electrodes and the 4 LED chips 132 on the ceramic substrate 12 are also more complicated, and the processing difficulty of the LED light source module 100 for depilation is increased.

Moreover, although the 4 LED chips 132 are arranged in series, that is, the currents of the 4 LED chips 11 are the same, and the voltage of the conductive patch area 13 is equally divided, the conductive patch areas 13 are arranged in parallel, the voltages of the conductive patch areas 13 are the same, and the current of the LED light source module 100 for depilation is equally divided, in order to ensure normal driving and working of the conductive patch areas 13, the driving current of the LED light source module 100 for depilation is required to be large, so that the current input into a single conductive patch area 13 can be large enough, and the temperature of the LED chips 132, the conductive patch areas 13 and the LED light source module 100 for depilation is increased when the current is increased, which increases power consumption, heat dissipation burden and line loss, leads to increase of safety risk, and the requirement on the driving power supply is also high.

For example, assuming that the driving voltage of the single LED chip 132 is 3V and the driving current is 1A, the driving voltage of the single conductive patch area 13 is 3V × 4 — 12V and the driving current is 1A, and at this time, the voltage of the single conductive patch area 13 is higher, which may cause a certain safety risk.

It can be understood that, when the area of the LED chip 132 is fixed, if the collinear region 131 is additionally disposed in the conductive patch region 13, the area of the conductive patch region 13 is not fixed, and at this time:

the smaller the connection margin coefficient t is, the smaller the area of the collinear region 131 is, the smaller the area of the conductive patch region 13 is, and the more difficult the electrical design such as wiring and routing of the collinear region 131 is, and meanwhile, the larger the proportion of the plurality of LED chips 132 in the conductive patch region 13 is, the higher the optical power density and the effective light emitting area of the LED light source module 10 for depilation in a unit area is;

the larger the connection margin coefficient t is, the larger the area of the collinear region 131 is, the larger the area of the conductive patch region 13 is, and the simpler the electrical design of wiring and routing of the collinear region 131 is, and meanwhile, the smaller the proportion of the LED chips 132 in the conductive patch region 13 is, the lower the optical power density and the effective light emitting area of the LED light source module 10 for depilation in a unit area is;

moreover, when the collinear region 13 is additionally arranged in the conductive patch region 13, the value of the connection margin coefficient t may be large enough without considering the requirements of the effective light-emitting area, the optical power density, the miniaturization structure, and the like, and is not limited to the value range provided by the embodiment of the present invention.

In view of the above situation that the collinear region 131 is additionally disposed in the conductive patch region 13, it is assumed that the conductive patch region 13 has the structure shown in fig. 5, where k × nS is a patch region area S5, the patch region area S5 is an area including only 4 × S areas of the LED chips 132 and the vacant region, and does not include the area S3 of the collinear region 131, the area S1 of the conductive patch region 13 is a patch region area S5+ a collinear region area S3, an effective light-emitting area ratio is (4 × S)/S1, the collinear region 131 ratio is S3/S1, and a specific description is made when the connection margin coefficient t takes a specific value in combination with table 3 below:

when the value of the patch tolerance coefficient t is continuously increased, the area S3 of the collinear region 131 and the area S1 of the conductive patch region 13 are continuously increased, and meanwhile, the area S4 of the LED light source module 10 for depilation is also continuously increased, the structure is not compact and miniaturized, even if 1 LED chip 132 is added to increase a certain power, the effective light emitting area and the optical power density of the conductive patch region 13 are continuously reduced.

When the area S1 in the conductive patch area 13 is constant, 6.3mm as described in the first embodiment²The optical power density is (3X 0.8W)/6.3mm²＝38.4W/cm²When the collinear region 131 is additionally provided, the minimum value of the patch tolerance coefficient t is 0.1The optical power density of the obtained light is 37.65W/cm²Still lower than the above situation, at this time, the area of the collinear region 13 is the smallest, the difficulty of electrical arrangement such as routing and wiring is very high, and when the area S1 of the conductive patch region is fixed, the patch allowance coefficient t can be (0.1, 3.3)]Any reasonable value within.

In summary, in the embodiment of the present invention, the conductive patch area 13 is formed by combining 3 LED chips 132 and 1 collinear area 131, which not only avoids the situation that the optical power density and the effective light emitting area output by the conductive patch area 13 are insufficient when there are 1 or 2 LED chips 132, but also avoids the above-mentioned problems when there are 4 or more LED chips 132.

TABLE 3

EXAMPLE five

Referring to fig. 1 to fig. 3, further, on the basis of the fourth embodiment, in the embodiment of the present invention, the top electrode of each LED chip 132 of one conductive patch area 13 is connected to the collinear area 131 of another conductive patch area 13.

Because the LED chips 132 selected in the embodiment of the present invention are vertical structures, the LED chips 132 include top electrodes (anodes) and bottom electrodes (cathodes) opposite to the top electrodes, current can be transmitted between the top electrodes and the bottom electrodes, the bottom electrodes of the LED chips 132 are connected to the driving circuits of the collinear regions 131 of the corresponding conductive patch regions 13, and the collinear regions 131 are connected to the top electrodes of the LED chips 132 in the adjacent conductive patch regions 13, so that the electrical connection between the adjacent conductive patch regions 13 is realized.

Specifically, when the 3 LED chips 132 are driven by voltage and current and emit light, the current is transmitted to the collinear region 131 of another conductive patch region 13 through the top electrode, and the collinear region 131 of another conductive patch region 13 transmits the current to the LED chip 132 of the conductive patch region 13, so that two adjacent conductive patch regions 13 form a path, which meets the requirement of a connection line between the conductive patch regions 13, the conductive patch regions 13 on the path can simultaneously emit light, and by designing the number of the conductive patch regions 13 on the path, the conductive patch regions 13 on the path can be combined to output enough energy for hair removal in a unit area.

EXAMPLE six

With reference to fig. 1 to 4, further, on the basis of the first embodiment, in the embodiment of the present invention, after being connected, the plurality of conductive patch areas 13 are configured to be at least 2 light emitting areas 14 emitting light independently or in combination, and the plurality of light emitting areas 14 are disposed independently without overlapping areas.

Specifically, one light emitting region 14 can be understood as one LED light emitting path, and one LED light emitting path can be controlled by one master switch 133 at the starting point of the light emitting path, so that the LED light source module 10 for hair removal according to the embodiment of the present invention is configured as at least 2 LED light emitting paths, and the at least 2 LED light emitting paths can be controlled by at least 2 master switches 133 at the starting point of the at least 2 LED light emitting paths, so as to ensure that each LED light emitting path can be individually powered on and lit up, and realize combined lighting and light emission. The light emitting regions 14 are connected in parallel, and the conductive patch regions 13 of the light emitting regions 14 are also connected in parallel.

And the light emitting region 14 comprises at least 2 conductive patch regions 13 arranged in series, i.e. at least 2 conductive patch regions 13 arranged in series are included on one LED light emitting path to output relatively sufficient energy per unit area for epilation.

From the structural point of view, the plurality of light emitting areas 14 disposed independently of each other and without overlapping regions therebetween can be understood as: when two or more light-emitting regions 14 continuously distributed emit light simultaneously, the light-emitting regions formed are direct superposition of the light-emitting areas of the single light-emitting regions 14. Therefore, the structure arrangement of each light emitting area 14 is convenient, and each light emitting area 14 is independent when emitting light and generating heat, and the influence on each other is small.

From the control point of view, the control for each light emitting region 14 is completely independent, the control between each light emitting region 14 does not interfere with and affect each other, there is no repetitive process for the control of each light emitting region 14, and when two or more light emitting regions 14 continuously distributed emit light simultaneously, the light emitting regions 14 are controlled respectively at the same time, rather than controlling other light emitting regions 14 through one or more light emitting regions 14. Therefore, accurate and rapid control over each light emitting area 14 can be realized, and control errors, disorder and the like caused by control superposition and repetition of a plurality of light emitting areas 14 are avoided.

In the embodiment of the present invention, the area of the LED light source module 10 for depilation in any unit time is defined as the light emitting area 14, after all the light emitting areas 14 of the LED light source module 10 for depilation emit light, the light emitting areas of all the light emitting areas 14 after emitting light are overlapped to form the total light emitting area of the LED light source module 10 for depilation, and the light emitting energy output by all the light emitting areas 14 after emitting light is overlapped to form the total light emitting energy of the LED light source module 10 for depilation.

Furthermore, in the embodiment of the present invention, when all the light emitting areas 14 emit light independently, it is a duty cycle of the LED light source module 10 for depilation.

More, when all the light emitting areas 14 emit light once in sequence, it is understood as one of the above-mentioned duty cycles of the LED light source module 10 for depilation, in which each of the light emitting areas 14, each of the conductive patch areas 13, and each of the LED chips 132 are lit only once, and when each of the light emitting areas 14, each of the conductive patch areas 13, and each of the LED chips 132 are lit again, it is the next duty cycle of the LED light source module 10 for depilation.

That is, in any unit time, one and only one light emitting region 14 in the LED light source module 10 for depilation independently emits light, all the conductive patch regions 13 and the LED chips 132 in the light emitting region 14 for luminescence emit light simultaneously, and other light emitting regions 14 do not operate, that is, all the conductive patch regions 13 and the LED chips 132 in other light emitting regions 14 do not emit light, when the light emitting of one light emitting region 14 is finished, the other light emitting region 14 takes over the light emitting of the previous light emitting region 14, and until all the light emitting regions 14 emit light, the LED light source module 10 for depilation finishes the work of the current work cycle.

When the LED light source module 10 for depilation starts the next working cycle, the set first light emitting region 14 starts to emit light, and after the first light emitting region 14 finishes emitting light, the set second light emitting region 14 takes over to emit light … … until all the light emitting regions 14 emit light, and the LED light source module 10 for depilation completes the second working cycle, and so on in the subsequent working cycle.

In the embodiment of the present invention, the light emitting time of each light emitting region 14 is the same, the light emitting sequence of the light emitting regions 14 may be sequentially turned on from left to right along the x axis as shown in fig. 1, and the next light emitting region 14 is turned on immediately after the previous light emitting region 14 finishes emitting light until all the light emitting regions 14 start emitting light and stop emitting light in sequence.

It is to be noted that the light emitting time of each light emitting region 14, the light emitting sequence between each light emitting region 14, the light emitting interval time, and the like can be specifically set according to specific requirements. When a plurality of light emitting regions 14 are combined to emit light simultaneously, the light emitting time may be different when different combinations of different light emitting regions 14 emit light.

In an embodiment, under the condition that the hardware of the LED light source module 10 for depilation is not changed (i.e. the relationship among the number, the position, and the gap of the light emitting region 14, the conductive patch region 13, and the LED chips 132 is not changed), the LED light source module 10 for depilation can be controlled to emit lights with different parameters, such as different light emitting areas, different light power densities, different light emitting durations, and the like, according to different conditions faced by the LED light source module 10 for depilation, such as the conditions of skins, skins with different colors, skins with different depilation areas, different skin roughness degrees, white degrees, and hair density, and the like, for different body parts, so as to effectively adapt to different usage scenarios.

For example, when skin with different areas is depilated, the different numbers of light-emitting regions 14 can be controlled to emit light (i.e., different portions of driving circuits are controlled) in a software control manner, for example, when the skin is depilated under the armpit, or even in a small-area depilating area such as beard, eyebrow, etc., a smaller number of light-emitting regions 14 can be controlled to emit light so as to be adapted to the small-area depilating area, so that the depilating effect of the LED light source module 10 for depilating facing the small-area depilating area is improved, and the extra heat dissipation burden and power consumption caused by the overall operation of the LED light source module 10 for depilating are avoided. When a large-area depilating area such as an arm or a leg is treated, the light emitting region 14 can be controlled to emit light in a normal and full-light-emitting manner, so that the depilating efficiency of the depilating LED light source module 10 facing the large-area depilating area is ensured.

For example, when the hairs facing the skin of the user are dense and long, the absorption effect of the light energy by the dense hairs is relatively high, so that the luminous power density output by the luminous region 14 can be reduced by controlling a small number of the luminous regions 14 to emit light, controlling the luminous regions 14 to emit light with a smaller power (controlling the magnitude of the voltage and the current), and the like, thereby reducing the pain of the user. When the hair of the skin of the user is sparse and short, the absorption effect on the light energy is relatively low, so that the effective light-emitting area and the light power density output by the light-emitting areas 14 can be increased by controlling the light-emitting areas 14 in a large number to emit light in a combined manner, controlling the light-emitting areas 14 to emit light with higher power, and the like, and the hair removal effect of the LED light source module 10 for hair removal is improved.

Further, with reference to fig. 1 and fig. 2, in the embodiment of the invention, the plurality of LED chips 132 are distributed at equal intervals to form the conductive patch regions 13, the plurality of conductive patch regions 13 are continuously distributed in the y-axis direction shown in fig. 1 to form the light emitting regions 14, and the plurality of light emitting regions 14 are continuously distributed in the x-axis direction shown in fig. 1 to form the LED light source module 10 for depilation.

Thus, the structure of the LED light source module 10 for depilation is regular, which is convenient for production and manufacture, and the formed illumination area (i.e. depilation area for user) is also regular, the output energy is more uniform, and the depilation experience of user is better.

The structure of the LED light source module 10 for depilation according to the embodiment of the present invention is as follows: the LED light source module 10 for depilation comprises a plurality of LED chips 132, a plurality of conductive patch areas 13, at least 2 light emitting areas 14 and the LED light source module 10 for depilation, wherein the at least 2 light emitting areas 14 can independently or combinatively emit light, the LED light source module 10 for depilation can control the light emitting sequence and the light emitting duration of different light emitting areas 14, different light emitting control of the LED light source module 10 for depilation is realized, so that when the LED light source module 10 for depilation works, only a set number of light emitting areas 14 are in light emitting work all the time, and the LED light source module 10 for depilation also generates heat and power consumption only when the set number of light emitting areas 14 are in light emitting work, and the heat dissipation burden and the power consumption of the whole LED light source module 10 for depilation in unit time can be reduced.

Further, in embodiments of the present invention, each light emitting region 14 includes 4 conductive patch regions 13 arranged in series, with the 4 conductive patch regions 13 being closely arranged in the y-axis direction shown in fig. 1 to form a compact light emitting region 14. Thus, the 4 conductive patch areas 13 can better share the voltage of the corresponding light emitting area 14 while improving the output energy and the effective light emitting area, and better adapt to the electrical values (such as voltage, current and power) of the LED light source module 10 for depilation, so as to ensure the normal operation of the LED light source module 10 for depilation.

From the level of the electrical design of the LED light source module 10 for depilation:

assuming that the driving voltage of each light emitting region 14 is approximately 12v, the driving current is approximately 3A, the power of the entire LED light source module 10 for hair removal is approximately 36W, and the power is moderate, so that the problem of heat generation caused by too high power can be avoided, and the normal operation of the LED light source module 10 for hair removal can be ensured. Since there are 4 conductive patch areas 13 in series per light emitting area 14, the voltage distributed to each conductive patch area 13 is 12V/4-3V.

After the voltage and current of the light emitting region 14 are determined by design, the voltage and current of the power source for driving the conductive patch region 13 are further calculated. In connection with the electrical parameter design of the LED chip 132: assume that the driving voltage of the single LED chip 132 used in the embodiment of the present invention is about 3V, and the driving current is 1A; the driving voltage of the conductive patch area 13 formed by connecting the 3 LED chips 132 in parallel is 3V, and the driving current is 1A × 3 — 3A; the driving voltage of the light emitting region 14 formed by connecting 4 sets of conductive patch regions 13 in series is 3V × 4 — 12V, and the driving current is 3A. Therefore, the LED light source module 10 is adapted to the above-mentioned pair of light emitting areas 14 and the whole LED light source module for depilation, so as to balance the voltage and current of each conductive patch area 13 and ensure the electrical safety.

In the field of hair removal devices (e.g. laser hair removal devices and IPL hair removal devices), energy density (J/cm) is generally used²) This parameter serves as the most important measure for the epilation effect of the epilator. The energy density is defined as the energy per unit area, and for a depilatory device, the energy density is the energy radiated from the light outlet divided by the area of the light outlet. Generally, the higher the energy density of light emitted by the light source of the hair removal device, the better and longer the hair removal effect, but because melanin is distributed in places other than hair follicles of the skin, the places other than the hair follicles are heated simultaneously when the hair follicles are irradiated with light, so that the higher the energy density of the light, the more obvious the pain feeling of a user is, the greater the risk of burning the skin is, and therefore, the energy density needs to be controlled within a certain range.

On the other hand, for the depilating device, in order to achieve a better depilating effect, the power output of the depilating device is generally directly increased to improve the energy density output by the depilating device, but since the volume of the depilating device is limited and the heat dissipation capability is limited, the heat dissipation burden is also significantly increased while the power output is increased, which adversely affects the photoelectric conversion efficiency and the overall performance of the light source of the depilating device. It is noted that the "energy" mentioned above refers to the "effective energy" capable of penetrating the superficial skin and reaching the hair follicle layer.

Therefore, while setting a suitable energy density for the light source of the hair removal device to meet the hair removal requirement, the overall structure of the household hair removal device needs to be completely adapted around the light source of the hair removal device in consideration of the problems of power consumption, heat dissipation and the like of the household hair removal device.

Studies have shown that the lowest energy density required for depilation with a domestic depilation instrument is theoretically 1J/cm²I.e. a minimum of 1J of energy radiated per square centimeter of skin is required to epilate, and several studies have shown that the minimum energy density required for epilation is 5J/cm²In the present example, the ratio of the concentration of the compound is 1J/cm²The illustration is for the lowest energy density. During the actual use of the depilating apparatus, the hair removing apparatusThe conditions encountered are complicated, such as different skin color and thickness, different hair follicle depth at different positions, different usage habits of users, etc., so that the depilation effect cannot be guaranteed under the radiation of the lowest energy density.

As is known, the root of a hair follicle has a more dense distribution of melanin than other parts of the skin, and according to the principle of extended selective photothermal action, the optical hair removal process is actually a process in which the energy of the melanin-absorbed light is converted into heat energy, so that the temperature of the hair follicle is rapidly increased in a short time in the process, and the heat energy is also conducted to nearby tissues, and after a certain temperature and a certain time are exceeded, irreversible damage is caused to destroy the root of the hair follicle, thereby achieving the purpose of inhibiting hair growth or permanently removing hair. It is noted that the absorption of light energy by the melanin of the follicle into heat energy and the transfer of heat energy to the surrounding environment is a dynamic process, and therefore, the amount of light energy absorbed by the follicle per unit time must be much greater than the amount of energy transferred to the follicle to raise the follicle to a temperature at which it can be damaged or even killed within a short period of time.

The relationship between the power and the energy of light is: p is W/t, wherein: p is power, in watts (W); w is energy in joules (J); t is time in seconds(s). According to the formula, the following formula is obtained: the optical power must reach a certain threshold to reach a higher energy per unit time, and considering the area of the optical output, it should be understood that the optical power per unit area must reach a certain threshold, and the concept is referred to as optical power density (W/cm) in the embodiment of the present invention²). Optical power density (W/cm)²) Energy density (J/cm)²) Irradiation time(s), i.e. energy density, is the accumulation of optical power density over time, which is the energy radiated by the light source per unit time. It is noted that the optical power densities discussed herein are the optical power densities received at the skin.

In the above relationship, the energy density is positively correlated with the optical power density and the irradiation time. It should be noted that, even though the energy density is in positive correlation with the optical power density and the radiation time, to meet the requirement of hair removal, it is necessary to ensure that the optical power density is high enough, that is, the energy radiated by the light source in a unit time is high enough to ensure that the light can effectively penetrate the superficial skin and damage the hair follicle, and then set a suitable radiation time to obtain a high enough energy density to ensure the hair removal effect, thereby avoiding the situation that the radiation time is too short and the hair removal effect is not good, and the radiation time is too long to cause the skin to be adversely affected.

In the embodiment of the present invention, the optical power can be understood as the total energy of the light emitted by the LED light source module 10 for depilation in unit time, which is represented by W, i.e. the "power" of the light in unit time; the optical power density can be understood as the total energy of the light emitted by the LED light source module 10 for depilation in unit time and unit area is W/cm²I.e. the "power" of the light per luminous area. Thus, the hair follicles in the skin of the unit light-emitting area can be effectively illuminated and damaged by the energy radiated by the depilating LED light source module 10, which ensures the unit light-emitting area, thereby realizing effective depilation.

The data show that the longer the period of time the epilator light source radiates, the lower the amount of energy radiated to the skin per unit time, and the poorer the epilation effect, given a constant total energy of the epilator light source. Irradiating the above 1J/cm with a light source of a depilator²The minimum energy density is the minimum requirement, and if the irradiation time of the light source of the hair removal instrument on the skin exceeds 0.2s, the energy received by the skin per unit time is not enough to achieve hair removal. That is, within 0.2s of the irradiation time, the optical power density of the LED light source module 10 for depilation is at least: 1J/cm²÷0.2s＝5W/cm²Then, depilation can be performed.

Furthermore, in the embodiment of the invention, when the LED light source module 10 for depilation emits light at any time, the optical power density of the light emitting region 14 is 60-80W/cm²。

The light power density of the light emitting region 14 is set to the above range to ensure the hair removal effect of the LED light source module 10 for hair removal when the skin of the user is irradiated at any time. The light power density can be prevented from being too low, the LED light source module 10 for depilation can not be depilated, the designed light power density is prevented from being too high, the LED light source module 10 for depilation is difficult to produce and manufacture, the practical situation is not reached, the skin of a user is prevented from being damaged due to the too high light power density, the feasibility of the LED light source module 10 for depilation is ensured, and meanwhile, the safety of the LED light source module 10 for depilation is also ensured.

It is assumed that in the embodiment of the present invention, the unit time of the LED light source module 10 for depilation is 200ms, that is, the light emitting time of the single light emitting region 14 is 200ms, and the optical power density is 20-60W/cm²The area of the skin irradiated is 1cm²Then the corresponding energy density is 4J/cm²-12J/cm²Is far greater than 1J/cm required by depilation in the prior art²Can achieve quick and effective depilation.

It should be noted that the optical power and the optical power density are working parameters of the LED light source module 10 for hair removal according to the embodiment of the present invention, and when the LED light source module 10 for hair removal in a unit light emitting area emits light at any time, the set optical power density is outputted to meet the requirement of the optical power density required for hair removal.

EXAMPLE seven

Referring to fig. 1, fig. 2 and fig. 4, further, on the basis of the sixth embodiment, in the embodiment of the present invention, the light emitting regions 14 are configured to be 2 to 25.

Specifically, when the light emitting regions 14 are configured to be more than 2, the control requirements of the LED light source module 10 for depilation at different time and different positions can be satisfied, and the requirement of outputting sufficient optical power density for depilation can be also satisfied, and meanwhile, the problem of excessive heat dissipation burden of the LED light source module 10 for depilation due to too few light emitting regions 14 caused by a certain total light emitting area of the LED light source module 10 for depilation can be avoided. When the light emitting regions 14 are configured to be less than 25, the problem that the total light emitting time after each light emitting region 14 emits light is too long due to too many light emitting regions 14, which leads to poor experience of users, and the energy consumption of the LED light source module 10 for depilation is reduced.

Further, in the present embodiment, the light emitting region 14 is configured to have 8-10 light emitting regions

Specifically, the number of the light emitting regions 14 is 8-10, and after the light emitting duration of a single light emitting region 14 is set, the total duration after the 8-10 light emitting regions 14 sequentially emit light according to the set light emitting duration is moderate, which is not too long or too short, and can ensure the overall depilating efficiency of the LED light source module 10 for depilating. Moreover, the light emitting areas 14 in the number within the above range of values form a larger total light emitting area of the LED light source module 10 for depilation, and after a single duty cycle of the LED light source module 10 for depilation is finished, the corresponding depilation area is also larger, so as to further improve the depilation efficiency of the LED light source module 10 for depilation.

Referring to fig. 1, in the LED light source module 10 for hair removal according to the embodiment of the invention, the number of the light emitting areas 14 is 8, each light emitting area 14 includes 4 conductive patch areas 13, and each conductive patch area 13 includes 3 LED chips 132.

Specifically, the total light emitting time of the LED light source module 10 for depilation is long enough by 8 light emitting areas 14, the depilation efficiency is ensured, the time of the interval work of the light emitting areas 14 is also long enough, the heat dissipation efficiency of the light emitting areas 14 can be improved, 4 conductive patch areas 13 and each conductive patch area 13 comprises 3 LED chips 132, a sufficiently large optical power density can be output for depilation, and the electrical safety performance is also high on the basis of meeting the normal work requirement by the design of 3 parallel 4 strings (i.e. 3 LED chips 132 are connected in parallel, and 4 conductive patch areas 13 are connected in series). Through the design, the LED light source module 10 for depilation can output high enough optical power density, and the problems of power consumption, electrical safety, heat dissipation and the like of the LED light source module 10 for depilation are also considered.

It should be noted that the lighting time of the light emitting areas 14 (the LED light source module 10 for depilation, the conductive patch area 13 and the LED chip 132) is the power-on time of the single light emitting area 14 controlled by the driving circuit, when the single light emitting area 14 is controlled by the control circuit to be powered off, the light emitting areas 14 stop lighting, and the control circuit can realize accurate control of the plurality of light emitting areas 14 in time sequence lighting.

Further, in the embodiment of the present invention, the gap L1 between the LED chips 132 is 0.01-1.0 mm.

It can be understood that the smaller the gap between the LED chips 132, i.e. the tighter the LED chips 132 are, the tighter the structures of the conductive patch region 13, the light emitting region 14 and the LED light source module 10 for depilation are, the higher the effective light emitting area ratio of the LED light source module 10 for depilation per unit light emitting area is, the higher the radiated optical power density is, and at the same time, the greater the difficulty in the arrangement of the LED chips 132 and the production of the whole LED light source module 10 for depilation is, the greater the heat dissipation burden of the LED chips 132 and the whole LED light source module 10 for depilation is.

The larger the gap between the LED chips 132 is, i.e. the looser the LED chips 132 are, the looser the structures of the conductive patch area 13, the light emitting area 14 and the LED light source module 10 for depilation are, and the smaller the effective light emitting area ratio of the LED light source module 10 for depilation per unit area is, the smaller the provided optical power density is.

Please refer to table 4 below, taking the conductive patch area 13 and the LED chips 132 as a square, and taking the example that 3 LED chips 132 are equidistantly and alternately distributed at the upper left corner, the lower left corner and the upper right corner in the conductive patch area 13 as an example, the following specific description is made by taking various parameters as an example:

the area S of a single LED chip 132 is (L1)²The width L4 of the land 134 is generally fixed, the length L2 of the conductive patch region 13 is (2 × L1+ L3+4 × L4), and the area S1 of the conductive patch region 13 is (L2)²The effective light emitting area of the conductive patch region 13 is 3S, the effective light emitting area ratio is 3S/S1, the optical power density is (3 × 0.8)/S1, and the area S2 of the LED light source module 10 for depilation is S1 × 40 (i.e., the LED light source module 100 for depilation includes 40 conductive patch regions 13).

In a conventional SMD (Surface Mounted Devices) packaging technology, if there is a requirement for compactness and miniaturization of a structure, a package gap of 0.3mm is generally selected for a component; in the conventional compact light source packaging technology, a packaging gap between chips is usually selected to be 0.5 mm; if the package gap of more than 1mm is selected, the gap between the components is large enough, and the compact and miniaturized structure can not be manufactured basically at the moment.

TABLE 4

In the embodiment of the present invention, the gap between the LED chips 132 is controlled to be 0.01-1.0mm, and in this range, the structure of the LED light source module 100 for depilation is compact, the effective light emitting area ratio of the LED light source module 100 for depilation per unit area is better, the light power density provided by the conductive patch region 13 formed by the LED chips 132 and the light emitting region 14 formed by the conductive patch regions 13 is sufficient for effective depilation, and the heat dissipation burden of the LED light source module 100 for depilation can be better controlled.

In the embodiment of the invention, the gap between the adjacent LED chips 132 is 0.1mm, and compared with the existing SMD package and light source package, the package gap is smaller, which is more beneficial to the compactness and miniaturization of the LED light source module 100 for depilation, and improves the effective light emitting area and the optical power density. The adjacent LED chips 132 are not prone to serious heat dissipation problems caused by too close distance, and the problem that the normal operation of the adjacent LED chips 132 is affected by electric conduction and mutual insulation failure caused by mutual contact of the process edges of the adjacent LED chips 132 is also avoided.

Moreover, the packaging process and the processing difficulty between the LED chips 132 are also easier to control, so as to control the production efficiency and the production cost of the LED light source module 100 for depilation.

Example eight

Further, on the basis of the first embodiment, in the embodiment of the present invention, the patch tolerance coefficient k satisfies: k is more than 1.3 and less than or equal to 2.1.

With reference to the following description of Table 5 and example one, regarding the case where the patch tolerance coefficient k satisfies "1.3 < k.ltoreq.3.9", different specific data within a numerical range where the patch tolerance coefficient k is "1.3 < k.ltoreq.2.1" will be specifically described below:

TABLE 5

When the patch tolerance coefficient k is within the above range, the ratio of the effective light-emitting area output by the single conductive patch area 13 is 48-71.39%, and the optical power density is 38.4-57.11W/cm²The effective light-emitting area and the optical power density are both large enough, and the energy density is also large enough, and assuming that the duration of the radiation of the LED light source module 10 for depilation to the skin is 0.2s, the minimum energy density of the radiation is 7.68J/cm²Greater than 1J/cm for existing depilation²The minimum energy density requirement of the light source module 10 for depilation is ensured, and the depilation effect of the LED light source module 10 for depilation is ensured.

And, the structure of electrically conductive paster district 13 is also compact and miniaturized relatively, further makes holistic LED light source module 10 for unhairing compact enough and miniaturized in structure, satisfies when being applied to the appearance that moults demand compact and miniaturized, simultaneously, guarantees electrically conductive paster district 13 under the prerequisite that effective luminous area is enough big, and its luminous area can not the undersize, the area of mouling that LED light source module 10 that is used for unhairing can reach can not the undersize, can promote efficiency and user experience that moults.

The power of the single conductive patch area 13 is not too high, and the power of the whole LED light source module 10 for depilation is not too high, so that the power consumption and the heat dissipation burden can be well controlled, and the use safety and the normal work of the LED light source module 10 for depilation are ensured.

Further, in the present embodiment, the patch allowance coefficient k is 2.1.

At this time, the optical power density and the effective light emitting area of the conductive patch area 13 and the LED light source module 10 for depilation can effectively achieve depilation, and the obtained LED light source module 10 for depilation has the best overall performance. Moreover, the area of the conductive patch area 13 is large enough, so that the electrical settings such as wiring and routing of the LED chips 132, the conductive patch area 13 and the LED light source module 10 for depilation, and the manufacturing processes such as the patch packaging process are not difficult, the production cost of the LED light source module 10 for depilation can be controlled, and the production efficiency can be ensured.

Example nine

Further, on the basis of the first embodiment, in the embodiment of the present invention, the connection margin coefficient t satisfies: t is more than 0.45 and less than or equal to 1.9.

Referring to the description of the first embodiment above when the link margin coefficient t satisfies "0.1 < t ≦ 3.3", and referring to the following table 6, different specific data within the numerical range of the link margin coefficient t "0.45 < t ≦ 1.9" will be specifically described below:

when the connection margin coefficient t is within the above range, the occupation ratio of the collinear region 131 in the single conductive patch region 13 is 7.14% -30.16%, the occupation ratio of the vacant region is 45.23% -22.22%, and the occupation ratio of the area of the collinear region 131 to the area of the vacant region in the conductive patch region 13 is not too large or too small, so that adjustment can be performed according to actual requirements to adjust the compactness of the internal structures of the conductive patch region 13 and the LED light source module 10 for hair removal, so that the structures of the conductive patch region 13 and the LED light source module 10 for hair removal keep sufficient compactness and miniaturization, and the requirements of compactness and miniaturization when applied to a hair removal instrument are met.

Meanwhile, according to the relationship between the connection margin coefficient t, the area of the collinear region 131 and the area of the vacant region, the electrical settings such as the routing and the wiring of the LED chips 132, the conductive patch region 13, the light emitting region 14, and the LED light source module 10 for depilation, and the manufacturing processes such as the patch packaging process can be controlled, so that the production cost of the LED light source module 10 for depilation can be controlled, and the production efficiency can be ensured.

Further, in the embodiment of the present invention, the connection margin coefficient t is in a range of 1.4 to 1.5.

At this time, the area of the collinear region 131 is slightly larger than that of the vacant region, electrical design such as routing and wiring of the collinear region 131 is relatively easy to implement, and the plurality of LED chips 132 are relatively compact, so that the processing and manufacturing process is most controllable while the conductive patch region 13, the light emitting region 14 and the LED light source module 10 for depilation are sufficiently compact and miniaturized.

TABLE 6

Example ten

Referring to fig. 1, fig. 2 and fig. 12, an embodiment of the present invention further provides an LED hair removal device 100, which includes a controller 20, a driving power source 30, a heat dissipation structure 40, and an LED light source module 10 for hair removal as described above. The controller 20 is connected to the driving power supply 30, the heat dissipation structure 40 and the LED light source module 10 for depilation, and the driving power supply 30 is further connected to the heat dissipation structure 40 and the LED light source module 10 for depilation.

In the LED depilation instrument 100 of the embodiment of the present invention, the LED light source module 10 for depilation has a structural distribution of the LED chip 132, the ceramic plate 12 and the metal substrate 11 from top to bottom, the metal substrate 11 is used as a bottom layer bearing and heat dissipation structure of the LED light source module 10 for depilation, the metal substrate 11 has a higher thermal conductivity coefficient, a lower thermal resistance and a higher strength, the heat generated by the ceramic plate 12 and the LED chip 132 thereon can be effectively conducted out of the LED light source module 10 for depilation, the heat dissipation effect and normal operation of the LED light source module 10 for depilation are ensured, and the service life is prolonged.

The ceramic plate 12 is etched with a driving circuit to control 2 or more than 2 mutually independent conductive patch areas 13, and further to accurately and effectively control the plurality of interconnected LED chips 132. Moreover, the ceramic plate 12 also has a better electrical insulation performance, so that 2 or more than 2 conductive patch areas 13 are insulated and independent from each other, and do not interfere with each other during working, thereby further realizing independent control of the conductive patch areas 13. Meanwhile, the ceramic plate 12 also has a higher thermal conductivity and a lower thermal resistance, so that when the LED chip 132 generates heat, the generated heat can be effectively conducted to the metal substrate 11 for heat dissipation, thereby further improving the heat dissipation effect of the LED chip 132 and ensuring the normal operation of the LED light source module 10 for depilation.

The area of the conductive patch area 13 is designed to be k × nS, the area of the collinear area 131 is designed to be t × S, wherein S is the area of a single LED chip 132, n is the number of LED chips 132 in the conductive patch area 13, k is a patch allowance coefficient, and t is a connection margin coefficient, that is, the area k × nS of the conductive patch area 13 is designed based on the total effective light-emitting area nS of the plurality of LED chips 132, and the area t × S of the collinear area 131 is designed based on the effective light-emitting area S of the single LED chip 132, so that a space suitable for routing and wiring is reserved for the whole conductive patch area 13, and the problem that electrical designs such as simple routing and wiring of LED light sources in the prior art cannot be adapted to the requirements of a miniaturized structure, an effective light-emitting area, depilation energy, heat dissipation and the like of a depilation instrument is solved.

Different structures, effective light-emitting areas, depilation energy, heat dissipation and other requirements of the LED light source module 10 for depilation in specific application are combined to design in advance to obtain a patch tolerance coefficient k and a connection margin coefficient t, the effective light-emitting areas of the LED chips 132 are combined to determine the areas of the conductive patch areas 13 and the collinear areas 131, after the areas of the conductive patch areas 13, the collinear areas 131 and the effective light-emitting areas are determined, structural parameters such as arrangement positions and gaps of the LED chips 132 and electrical parameters such as wiring and the like can be reasonably designed by combining actual requirements and the current-stage production process, the LED light source module 10 for depilation can be designed into a compact and miniaturized structure on the basis of ensuring the effective heat dissipation, enough energy for depilation can be output, and the requirements of energy, heat dissipation and the like when the LED light source module 10 for depilation is applied to the LED depilation instrument 100 are met, The LED light source module 10 for depilation can be effectively applied to the LED depilation instrument 100 due to the requirements of miniaturization, heat dissipation and the like.

In one embodiment, the LED depilating apparatus 100 may further include a skin color detection device, which may be a sensor with a skin color detection function, connected to the controller 200 with a skin color detection algorithm, when the user uses the LED depilating apparatus 100, the LED depilating apparatus 100 first detects the skin color of the user through the skin color detection device, if the skin color value of the user is within a normal value range, the controller 200 controls the LED depilating apparatus 100 to normally start and depilate, if the skin color value of the user is beyond the normal value range, the controller 200 controls the LED depilating apparatus 100 to send an alarm and lock or stop working, after detecting that the skin color is within the normal value range, or the controller 200 receives control instructions of unlocking, restarting working, etc. of the user and then controls the LED depilating apparatus 100 to work again to prevent the user from misoperation or accidental injury caused by some users who are not suitable for depilating and have a deep skin color, the safety of the LED epilating apparatus 100 is improved.

In one embodiment, when the user uses the LED hair removal apparatus 100, the LED hair removal apparatus 100 can further detect whether the area where the user performs hair removal is repeatedly removed, if the skin of the user is removed or not suitable for hair removal, the controller 200 controls the LED hair removal apparatus 100 to lock or stop working, so as to avoid damage to the area where the user performs hair removal repeatedly or the area where the user is not suitable for hair removal, and if the skin of the user is not removed, the controller 200 controls the LED hair removal apparatus 100 to start hair removal normally.

It can be understood that if a certain piece of skin of the user has been depilated, the temperature of the certain piece of skin will increase, therefore, in the above embodiment, the LED depilating apparatus 100 can detect whether the skin temperature of the user is within the normal range through the temperature sensor, the temperature sensor is connected to the controller 200, the controller 200 determines whether the depilated area of the user has been repeatedly depilated, when the temperature of the certain piece of skin of the user is within the normal range, the controller 200 determines that the certain piece of skin of the user has not been depilated, at this time, the controller 200 controls the LED depilating apparatus 100 to operate normally to depilate, and when the temperature of the certain piece of skin of the user exceeds the normal range, the certain piece of skin of the user is determined to have been depilated or is not suitable for depilating due to the excessive temperature.

Referring to fig. 12 to 14, the LED hair removal device 100 of the embodiment of the present invention further includes a housing 50, a receiving space is formed in the housing 50, components of the LED hair removal device 100, such as the controller 20, the driving power supply 30, the heat dissipation structure 40, and the LED light source module 10 for hair removal, are received and fixed in the receiving space, and at least a portion of the LED light source module 10 for hair removal is exposed from the housing 50 to ensure that light emitted by the LED hair removal device 100 is transmitted to the outside. The housing 50 can relatively and firmly accommodate and fix the components, so as to prevent the components from moving to affect the normal operation of the LED hair removal device 100, and effectively protect the internal structure of the LED hair removal device 100 from being directly damaged by external force, thereby improving the safety performance and the service life of the LED hair removal device 100.

In the embodiment of the present invention, the housing 50 may be a separate structure or an integrated structure to meet different requirements of the LED hair removal device 100. Referring to fig. 12 to 14, in the embodiment of the present invention, the housing 50 is a split structure, and includes an upper housing 51 and a lower housing 52 adapted to the upper housing 51 and relatively detached from the upper housing, the upper housing 51 and the lower housing 52 enclose the accommodating space when fixed together, the controller 20, the driving power supply 30, and the LED light source module 10 for depilation are located between the upper housing 51 and the lower housing 52, and the upper housing 51 and the lower housing 52 are detachably disposed for facilitating assembly and disassembly of the LED depilation instrument 100. In one embodiment, housing 50 may also be a unitary structure to improve the integrity and integrity of LED epilation apparatus 100 and to improve the strength of the whole.

In one embodiment, the upper shell 51 and the lower shell 52 can be detachably arranged in a screw fastening mode, and the screw fastening mode has good repeatability and good fixing effect. In another embodiment, the upper shell 51 and the lower shell 52 can be detachably disposed by a snap-fit manner, which does not require a special tool and is more convenient to operate. Of course, in another embodiment, the upper housing 51 and the lower housing 52 may be detachably disposed by screwing and snapping, fixing, and combining, so as to further improve the stability when the upper housing 51 and the lower housing 52 are fixed together.

Furthermore, in the embodiment of the present invention, the housing 50 is provided with a heat dissipation hole (53/54) for ventilating and dissipating heat with the outside, so as to improve the heat dissipation capability of the LED hair removal device 100. In one embodiment, heat dissipation holes (53/54) are opened on the upper and lower surfaces of the housing 50, i.e. the upper and

lower shells

51 and 52, and the heat dissipation holes (53/54) correspond to the positions of the heat dissipation structure 40 in the housing 50, so as to correspondingly transmit the heat conducted by the heat dissipation structure 40 to the outside of the LED epilating apparatus 100, thereby further improving the heat dissipation effect of the LED epilating apparatus 100. In yet another embodiment, heat dissipation holes (53/54) may be added to the left and right sides of the housing 50 to transfer heat generated by the LED epilator 100 to the outside world in all directions.

In one embodiment, the driving power source 30 is a battery, which may be a lithium battery or a rechargeable battery, so that the LED hair removal device 100 is free from the limitation of wires and sockets, thereby improving the portability and the use freedom of the LED hair removal device 100. In another embodiment, the driving power source 30 may also be an external power source to ensure the power supply of the LED epilating apparatus 100. In another embodiment, the LED hair removal device 100 can further include an external power source on the basis of the battery, so as to improve the applicability of the LED hair removal device 100.

In the embodiment of the present invention, the heat dissipation structure 40 includes heat dissipation fins and heat dissipation fans, the heat dissipation fins are connected to the LED light source module 10 (metal substrate 11) for depilation and the controller 20 to conduct heat generated by the two, the heat dissipation fans are disposed on the heat dissipation fins, and the positions of the heat dissipation fans and the heat dissipation fins respectively correspond to the heat dissipation holes on the upper surface and the lower surface of the housing 50. Thus, when the heat dissipation fan rotates, the heat generated by the heat dissipation fins can be blown out of the LED depilating device 100 through the heat dissipation holes on the lower surface of the housing 50, and cold air is sucked through the heat dissipation holes on the upper surface of the housing 50, so that the circulation of the cold air and the hot air is promoted, and the heat dissipation and cooling effects of the heat dissipation fins are ensured.

In the description herein, references to the description of the terms "example one," "example two," etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An LED light source module for unhairing, includes metal substrate and welds in ceramic plate on the metal substrate, characterized in that, LED light source module for unhairing still includes:

2. The LED light source module for hair removal of claim 1, wherein a plurality of said LED chips in each said conductive patch area are connected in parallel.

3. The LED light source module for hair removal as set forth in claim 1, wherein any two of said conductive patch regions are connected in series.

4. The LED light source module for hair removal as set forth in claim 2, wherein 3 of said LED chips are disposed in parallel in each of said conductive patch areas.

5. The LED light source module for hair removal of claim 1, wherein the top electrode of each of said LED chips of said conductive patch areas is connected to said collinear region of another of said conductive patch areas.

6. The LED light source module for hair removal as set forth in claim 1, wherein the plurality of conductive patch areas are connected to configure at least 2 light emitting areas emitting light independently or in combination.

7. An LED light source module for hair removal as defined in claim 6, wherein the number of the light emitting areas is 2-25.

8. The LED light source module for hair removal as set forth in claim 1, wherein the patch tolerance coefficient k satisfies 1.3 < k ≦ 2.1.

9. The LED light source module for hair removal as set forth in claim 8, wherein the connection margin coefficient t satisfies 0.45 < t ≦ 1.9.

10. An LED hair removal device, comprising:

an LED light source module for hair removal as claimed in any one of claims 1-9;