Dental light curing lamp and light curing machine

Abstract

The utility model belongs to the technical field of light curing machines, and relates to a dental light curing lamp and a light curing machine. The dental photocuring lamp comprises: a head provided with a light source; the adapter comprises a shell and a color changing piece, the shell is detachably connected to the machine head and provided with a containing groove, a groove opening faces the machine head, and the color changing piece is arranged in the containing groove and located on the light path of the light. When the color of the light emitted by the dental light curing lamp needs to be changed, the adapter can be mounted on the machine head, and the light enters the color changing piece, so that the color of the light is directly changed. Due to the fact that the arrangement that a double-color lamp bead is installed on the head is not adopted, the dental light curing lamp can prevent the light intensity from being reduced, and then the curing efficiency is improved; meanwhile, light rays of different colors can be switched only by disassembling and assembling the adapter, so that the light ray color replacement efficiency of the dental light curing lamp is high, and the replacement cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light curing machines, and more particularly to a dental light curing lamp and a light curing machine. BACKGROUND

[0002] A light curing machine includes a dental light curing lamp, which is usually used to cure resin-based composite materials by light irradiation to achieve the effect of repairing teeth. The dental light curing lamp has high requirements for the color and intensity of the light it emits, and different colors of light are switched according to the use environment and use requirements. In the prior art, when switching the light, two color light beads are usually added to the dental light curing lamp, or the entire head of the dental light curing lamp is replaced.

[0003] For example, when switching from blue light to white light, one method in the prior art is to set blue light beads 10 and white light beads 20 in the head, as shown in Figures 1a-2b When needed, the blue light beads 10 and the white light beads 20 are started respectively. However, this method causes the blue light beads 10 and the white light beads 20 to share a space, which in turn causes the intensity of the light of the two colors to decrease, reducing the curing efficiency. At the same time, when the light beads of one color (for example, the blue light beads 10) emit light, part of the blue light 10 will pass through the white light beads and then be emitted, which in turn causes the white light 21 to be mixed in the blue light 11 or the white light 21 to be generated at the edge of the blue light 11, increasing the loss rate of the blue light 11 and reducing the curing efficiency. Another method in the prior art is to directly replace the entire blue light head with a white light head, which has low efficiency and high cost.

[0004] In summary, the prior art has low curing efficiency, low light color replacement efficiency, and high replacement cost when switching the color of the light of the dental light curing lamp. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the technical scheme of the utility model is that the existing dental light curing lamp has low curing efficiency, low light color replacement efficiency, and high replacement cost when switching the color of the light of the dental light curing lamp.

[0006] To solve the above technical problems, the embodiments of the present application provide the following solutions:

[0007] A dental light curing lamp, comprising:

[0008] A head, the head is provided with a light source, the light source emits light in a direction away from the head;

[0009] The conversion head comprises a shell and a color changing piece, the shell is detachably connected to the head, and is provided with a receiving groove, the opening of the receiving groove faces the head, the color changing piece is arranged in the receiving groove and is located on the light path of the light, and is used for changing the color of the light incident on the color changing piece.

[0010] Further, the head is further provided with a first magnetic attraction piece, and the conversion head further comprises a second magnetic attraction piece, the second magnetic attraction piece is fixedly connected to the shell and is attracted to the first magnetic attraction piece.

[0011] Further, the second magnetic attraction piece is located in the receiving groove and is used for abutting the color changing piece against the groove bottom of the receiving groove.

[0012] Further, the conversion head further comprises a fixing piece, the fixing piece is fixedly connected to the side wall of the receiving groove and at least abuts against the second magnetic attraction piece in the depth direction of the receiving groove.

[0013] Further, the fixing piece comprises a connecting part and a limiting part, the connecting part is connected to the side wall of the receiving groove, the limiting part is connected to the connecting part, the outside of the limiting part is connected to the connecting part, the inside of the limiting part protrudes towards the central axis direction of the receiving groove, and is used for limiting the movement of the second magnetic attraction piece towards the head; and / or,

[0014] The first magnetic attraction piece and the second magnetic attraction piece are both annular structures, and the shapes and sizes of the first magnetic attraction piece and the second magnetic attraction piece are matched, the color changing piece is coaxially arranged with the second magnetic attraction piece.

[0015] Further, in the depth direction of the receiving groove, the thickness of the limiting part ranges from 0.4mm to 1.1mm; and / or,

[0016] The connecting part and the side wall of the receiving groove are glued; and / or,

[0017] The connecting part and the side wall of the receiving groove are threadedly connected; and / or,

[0018] The fixing piece is an annular structure; and / or,

[0019] In the depth direction of the receiving groove, the thickness of the color changing piece ranges from 0.15mm to 0.3mm; and / or,

[0020] The color changing piece can comprise at least one of a filter and a fluorescent sheet; and / or,

[0021] The light source is a blue light source, and the color changing piece is a yellow fluorescent sheet.

[0022] Furthermore, the conversion head also includes a light guide, the housing includes a first housing and a second housing, the receiving groove includes a first sub-receiving groove and a second sub-receiving groove, the first sub-receiving groove is located inside the first housing, the second sub-receiving groove is located inside the second housing, and the bottom of the second sub-receiving groove is provided with a light outlet;

[0023] Along the direction from the machine head to the color-changing component, the cross-sectional area of ​​the first sub-accommodating groove is equal, and the cross-sectional area of ​​the second sub-accommodating groove and the light guide gradually decreases. The color-changing component is located in the first sub-accommodating groove, and the side wall of the color-changing component abuts against the side wall of the first sub-accommodating groove. The light guide is located in the second sub-accommodating groove, with one end abutting against the color-changing component and the other end extending out of the light outlet.

[0024] Furthermore, a light-emitting part is provided at the end of the light guide that is away from the color-changing part, and the light-emitting part passes through the light-emitting port. A light-incident part and a refraction groove are provided at the end of the light guide that is close to the color-changing part. The orthographic projection range of the light-incident part toward the light-emitting port is greater than or equal to the orthographic projection range of the light-emitting part at the light-emitting port.

[0025] The orthographic projection range of the refractive groove toward the light outlet is separate from the orthographic projection range of the light-emitting part at the light outlet, and the refractive groove is used to refract the light incident on the refractive groove to the light-emitting part.

[0026] Furthermore, the refractive groove is provided with a refractive surface, which is used to refract light and forms an acute angle with the color-changing component, the angle of which is 0 to 90°; and / or,

[0027] The refractive groove is arranged around the light-incident portion.

[0028] Accordingly, this application also provides a light curing machine, which includes the dental light curing lamp described in any of the above embodiments.

[0029] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0030] Because the outer casing is detachably connected to the head unit, and the color-changing component can change the color of the light passing through it, when it is necessary to change the color of the light emitted by the dental curing lamp, the conversion head can be installed on the head unit, and the light can be incident on the color-changing component to directly change the color of the light. Since a dual-color LED configuration is not used on the head unit, the dental curing lamp of this embodiment can avoid a decrease in the intensity of the light emitted from the head unit, thereby improving curing efficiency. Furthermore, different light colors can be switched simply by removing and installing the conversion head; therefore, the dental curing lamp has high light color changing efficiency and low replacement cost. Attached Figure Description

[0031] In order to more clearly illustrate the solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0032] Figure 1a is a structural schematic diagram of a prior art dental light curing lamp with only blue light beads;

[0033] Figure 1b is a light schematic diagram of a prior art dental light curing lamp with only blue light beads;

[0034] Figure 2a is a structural schematic diagram of a prior art dental light curing lamp with blue light beads and white light beads;

[0035] Figure 2b is a light schematic diagram of a prior art dental light curing lamp with blue light beads and white light beads;

[0036] Figure 3 is a structural schematic diagram of a dental light curing lamp of an embodiment of the present application;

[0037] Figure 4 is a structural schematic diagram of a dental light curing lamp of an embodiment of the present application with a light guide member.

[0038] Reference signs:

[0039] Blue light beads 10, blue light 11, white light beads 20, white light 21, light 30, shell 100, first shell 101, second shell 102, accommodating groove 110, light outlet 120, color changing member 200, second magnetic attraction member 300, fixing member 400, connecting part 410, limiting part 420, light guide member 500, light outlet part 510, light inlet part 520, refraction groove 530, refraction surface 531. DETAILED DESCRIPTION

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "include" and "comprise", and variations thereof, are intended to cover a non-exclusive inclusion; the terms "first", "second", and the like, are used to distinguish one element from another, and are not intended to imply a particular order.

[0041] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combinable with other embodiments.

[0042] To solve the above technical problems, please refer to Figure 3 A dental light curing lamp, the dental light curing lamp comprises:

[0043] A handpiece (not shown in the figure) is provided with a light source (not shown in the figure), which emits light rays 30 towards a direction away from the handpiece;

[0044] A conversion head, the conversion head comprises a shell 100 and a color changing piece 200, the shell 100 is detachably connected to the handpiece, and is provided with a receiving groove 110, the opening of the receiving groove 110 is towards the handpiece, the color changing piece 200 is arranged in the receiving groove 110 and is located on the light path of the light rays 30, for changing the color of the light rays 30 incident on the color changing piece 200.

[0045] In this embodiment, because the shell 100 is detachably connected to the handpiece, and the color changing piece 200 can change the color of the light rays 30 passing through itself. Therefore, when it is needed to change the color of the light rays 30 emitted by the dental light curing lamp, the conversion head can be installed on the handpiece, and the light rays 30 are incident on the color changing piece 200, so as to directly change the color of the light rays 30. Because the setting of installing double-color light beads on the handpiece is not adopted, the dental light curing lamp of this embodiment can avoid the intensity of the light rays 30 from being reduced, thereby improving the curing efficiency; at the same time, the switching of light rays 30 of different colors can be completed by detaching and installing the conversion head, so that the color replacement efficiency of the light rays 30 of the dental light curing lamp is high, and the color replacement cost is low. The end of the shell 100 away from the light source can be provided with a light outlet 120, so as to provide the light rays 30 to be emitted from the conversion head through the light outlet 120; the shell 100 can also be provided with a transparent piece on the side away from the light source, so as to let the light rays 30 directly pass through the transparent component and be emitted from the conversion head.

[0046] It should be understood that the combination of the light source and the color changing piece 200 can be arbitrarily matched, for example, the light source is a blue light source, and the conversion piece can convert the blue light source into white light, or into other color light rays 30. The conversion head can have multiple, and the color changing pieces 200 in each conversion head change the color of the light rays 30 differently, at this time, different conversion heads can be quickly replaced, so as to diversify the color of the light rays 30 emitted by the dental light curing lamp.

[0047] Further, please refer to Figure 3The machine head is also provided with a first magnetic attraction member (not shown in the figure), and the conversion head further comprises a second magnetic attraction member 300 fixedly connected to the shell 100 and attracted to the first magnetic attraction member.

[0048] In the embodiment, the first magnetic attraction member and the second magnetic attraction member 300 can be attracted to each other, so that when the conversion head and the machine head need to be assembled, the quick assembly of the machine head and the conversion head can be completed through the magnetic attraction between the first magnetic attraction member and the second magnetic attraction member 300, thereby further improving the color changing efficiency of the light 30 of the dental light curing lamp and reducing the replacement cost.

[0049] Further, referring to FIG. Figure 3 The second magnetic attraction member 300 is located in the accommodating groove 110 and used to abut the color changing member 200 against the groove bottom of the accommodating groove 110.

[0050] In the embodiment, since the color changing member 200 is located at the groove bottom of the accommodating groove 110 and the second magnetic attraction member 300 abuts the color changing member 200 against the groove bottom of the accommodating groove 110, the color changing member 200 and the groove bottom of the accommodating groove 110 can function to fix the second magnetic attraction member 300, avoiding the second magnetic attraction member 300 from moving along the path of the light 30 and falling off the conversion head. It should be understood that the groove bottom of the accommodating groove 110 is located in the movement path of the light 30, i.e. the X direction in Figure 3 The second magnetic attraction member 300 can be in transition fit or interference fit with the side wall of the accommodating groove 110, so as to limit the Z direction movement thereof.

[0051] Further, referring to Figure 3 The conversion head further comprises a fixing member 400 fixedly connected to the side wall of the accommodating groove 110 and abutting against the second magnetic attraction member 300 in the depth direction of the accommodating groove 110.

[0052] In the embodiment, since the fixing member 400 is fixedly connected to the side wall of the accommodating groove 110 and abuts against the second magnetic attraction member 300 in the depth direction of the accommodating groove 110, the fixing member 400 can limit the movement of the second magnetic attraction member 300 in the X direction, thereby avoiding the second magnetic attraction member 300 from falling off the conversion head. It should be understood that the fixing member 400 can also abut one end against the second magnetic attraction member 300 and the other end against the color changing member 200, while exerting a force on the color changing member 200 and the second magnetic attraction member 300, thereby improving the structural stability of the dental light curing lamp.

[0053] Further, referring to Figure 3 The fixing member 400 comprises a connecting portion 410 connected to the side wall of the accommodating groove 110 and a limiting portion 420, the outer side of the limiting portion 420 is connected to the connecting portion 410, the inner side thereof protrudes towards the central axis direction of the accommodating groove 110 and used to limit the movement of the second magnetic attraction member 300 towards the machine head; and / or,

[0054] The first magnetic attraction member and the second magnetic attraction member 300 are both annular structures, and the shapes and sizes of the two are matched, and the color changing member 200 is coaxially arranged with the second magnetic attraction member 300.

[0055] In the embodiment, the connecting part 410 can be fixedly connected with the side wall of the accommodating groove 110, so as to fix the position of the fixing part 400. The limiting part 420 can limit the second magnetic attraction member 300, so as to avoid the movement of the second magnetic attraction member 300 along the X direction. Figure 3 When the first magnetic attraction member and the second magnetic attraction member 300 are both annular structures, and the shapes and sizes of the two are matched, and the color changing member 200 is coaxially arranged with the second magnetic attraction member 300, the first magnetic attraction member and the second magnetic attraction member 300 are connected, and a channel is formed between the two, and the channel is coaxial with the color changing member 200, so as to ensure that the light 30 is coaxial with the color changing member 200, and then the light 30 passes through the center of the color changing member 200 and is uniformly distributed around the color changing member 200, so as to ensure the uniformity of the light 30.

[0056] Further, along the depth direction of the accommodating groove 110, the thickness of the limiting part 420 is 0.4mm-1.1mm; and / or,

[0057] The connecting part 410 is glued between the side wall of the accommodating groove 110; and / or,

[0058] The connecting part 410 is threadedly connected with the side wall of the accommodating groove 110; and / or,

[0059] The fixing part 400 is an annular structure; and / or,

[0060] Along the depth direction of the accommodating groove 110, the thickness of the color changing member 200 is 0.15mm-0.3mm; and / or,

[0061] The color changing member 200 can include at least one of a filter and a fluorescent sheet; or,

[0062] The light source is a blue light source, and the color changing member 200 is a yellow fluorescent sheet.

[0063] In the embodiment, the thickness of the limiting part 420 can ensure that the limiting part 420 has sufficient strength to avoid the second magnetic member 300 from falling off, and can avoid that the thickness is too large to affect the magnetic attraction force between the second magnetic member 300 and the first magnetic member. When the fixing member 400 is in a ring structure, the fixing member 400 can completely fit the side wall of the accommodating groove 110, thereby effectively increasing the contact area between the fixing member 400 and the side wall of the accommodating groove 110, and thereby increasing the structural strength of the dental light curing lamp. The thickness of the color changing member 200 (for example, a fluorescent sheet) can affect the intensity and color temperature of the outgoing light 30 of the color changing member 200, and the distance between the color changing member 200 and the light source also affects the color temperature of the outgoing light 30. The thickness of the color changing member 200 of the embodiment can avoid the light intensity loss caused by absorption and scattering. When the light source is a blue light source and the color changing member 200 is a yellow fluorescent sheet, the conversion head can switch the blue light to white light.

[0064] It should be understood that the color temperature of the light 30 (for example, white light) emitted by the dental light curing lamp can be adjusted by adjusting the thickness and distance of the color changing member 200, so that the color temperature of the light 30 is between 3000K and 10000K. If it is necessary to position the light 30 as white light, the color temperature is adjusted to 5000K-7000L. If it is necessary to change the coolness and warmth of the light 30, increasing the warm color tone requires increasing the thickness of the color changing member 200 and decreasing the distance between the color changing member 200 and the light source, and the cold color tone is operated in the opposite way.

[0065] Further, please refer to Figure 4 , the conversion head further comprises a light guide member 500, the housing 100 comprises a first housing 101 and a second housing 102, the accommodating groove 110 comprises a first sub-accommodating groove and a second sub-accommodating groove, the first sub-accommodating groove is located in the first housing 101, the second sub-accommodating groove is located in the second housing 102, and the bottom of the second sub-accommodating groove is provided with a light outlet 120;

[0066] In the direction from the head to the color changing member 200, the cross-sectional area of the first sub-accommodating groove is equal, the cross-sectional area of the second sub-accommodating groove and the light guide member 500 gradually decreases, the color changing member 200 is located in the first sub-accommodating groove, the side wall of the color changing member 200 abuts against the side wall of the first sub-accommodating groove, the light guide member 500 is located in the second sub-accommodating groove, and one end abuts against the color changing member 200 and the other end penetrates out of the light outlet 120.

[0067] In the embodiment, part of the light rays 30 can directly pass through the color changing piece 200 and the light guide piece 500 and then be emitted from the light outlet 120, and the other part of the light rays 30 cannot directly reach the light outlet 120. Since the cross-sectional areas of the first sub- accommodating grooves are equal, the cross-sectional areas of the second sub-accommodating grooves and the light guide piece 500 gradually decrease, so the color changing piece 200 can be clamped at the end of the second sub-accommodating groove facing the first sub-accommodating groove; at the same time, the second sub-accommodating groove can control the light rays 30 to be emitted from the light outlet 120 by the reflection of the inner wall of the second sub-accommodating groove, thereby reducing the range of illumination and increasing the intensity of the light rays 30.

[0068] Further, the end of the light guide piece 500 away from the color changing piece 200 is provided with a light outlet portion 510, the light outlet portion 510 is arranged in the light outlet 120, the end of the light guide piece 500 close to the color changing piece 200 is provided with a light inlet portion 520 and a refraction groove 530, the range of the orthographic projection of the light inlet portion 520 towards the light outlet 120 is greater than or equal to the range of the orthographic projection of the light outlet portion 510 in the light outlet 120.

[0069] The range of the orthographic projection of the refraction groove 530 towards the light outlet 120 is separated from the range of the orthographic projection of the light outlet portion 510 in the light outlet 120, and the refraction groove 530 is used to refract the light rays 30 incident to the refraction groove 530 to the light outlet portion 510.

[0070] In the embodiment, since the cross-sectional areas of the second sub-accommodating grooves gradually decrease and the color changing piece 200 is located in the first sub-accommodating groove, the range of the light rays 30 entering the color changing piece 200 in the conversion head is generally greater than the range of the light outlet 120. In order to further improve the light focusing effect and make the light rays 30 be emitted from the light outlet 120 without being reflected by the inner wall of the shell 100, the light guide piece 500 of the embodiment is further provided with the refraction groove 530, so that the light rays 30 pass through the color changing piece 200, first pass through the air medium, and then enter the medium of the light guide piece 500. At this time, the refraction angle B of the light rays 30 is smaller than the incident angle A, so the light rays 30 can be focused to be directly refracted towards the light outlet 120 and emitted. The range of the orthographic projection of the light inlet portion 520 towards the light outlet 120 is greater than or equal to the range of the orthographic projection of the light outlet portion 510 in the light outlet 120, which can ensure that the light inlet portion 520 sufficiently guides enough light rays 30 to enter the light guide piece 500.

[0071] Further, referring to Figure 4 , the refraction groove 530 is provided with a refraction surface 531, the refraction surface 531 is used to refract the light rays 30 and forms an acute angle with the color changing piece 200, the angle of the acute angle is 0-90°; and / or,

[0072] The refraction groove 530 is circumferentially arranged in the light inlet portion 520.

[0073] In the embodiment, the refractive surface 531 directly contacts the light rays 30, and the angle range thereof can ensure that the light rays 30 are refracted to the light outlet 120. Since the light inlet 520 and the light outlet 120 are located on the same straight line, the light rays 30 passing therethrough are generally the light rays 30 of the central part, and the intensity thereof is high. The refractive groove 530 is arranged around the light inlet 520, which can ensure that the light rays 30 with high intensity are sufficiently refracted to the light outlet 120, so as to avoid the intensity loss of the light rays 30. The acute angle is Figure 4 The obtuse angle C.

[0074] Correspondingly, the application further provides a light-curing machine, which comprises the dental light-curing lamp according to any one of the above embodiments. Figures 3-4

[0075] In the embodiment, since the shell 100 is detachably connected to the machine head, and the color conversion piece 200 can change the color of the light rays 30 passing therethrough. Therefore, when it is required to change the color of the light rays 30 emitted by the dental light-curing lamp, the conversion head can be installed on the machine head, and the light rays 30 are made to be incident on the color conversion piece 200, so as to directly change the color of the light rays 30. Since the setting of the double-color lamp bead installed on the machine head is not adopted, the light-curing machine of the embodiment can avoid the intensity reduction of the light rays 30, and further improve the curing efficiency. Meanwhile, the switching of the light rays 30 with different colors can be completed by detaching and installing the conversion head, so that the color replacement efficiency of the light rays 30 of the light-curing machine is high, and the color replacement cost is low.

[0076] The above embodiments of the utility model are described in detail, and the principles and implementation manners of the application are described by applying specific examples; the above embodiment descriptions are only used to help understand the method and core idea of the application; meanwhile, according to the idea of the application, the specific implementation manners and application ranges can be changed by the person skilled in the art; in conclusion, the content of the specification should not be understood as the limitation of the application.

[0077] Obviously, the above-described embodiments are only some of the embodiments of the application, rather than all the embodiments, and the preferred embodiments of the application are given in the drawings, but the patent range of the application is not limited. The application can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive. Although the application is described in detail with reference to the foregoing embodiments, the person skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacement to some technical features. Any equivalent structure made by using the content of the specification and the drawings, directly or indirectly applied to other related technical fields, is also within the patent protection range of the application.

[0078] ​Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, combinations, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dental light-curing lamp, characterized in that The dental light curing lamp comprises: a handpiece provided with a light source emitting light rays towards a direction away from the handpiece; a conversion head comprising a shell and a color changing piece, the shell being detachably connected to the handpiece, and the shell being provided with a receiving groove, the color changing piece being arranged in the receiving groove and located in the light path of the light rays for changing the color of the light rays incident on the color changing piece.

2. The dental light-curing lamp according to claim 1, characterized in that The handpiece is further provided with a first magnetic attraction member, and the conversion head further comprises a second magnetic attraction member fixedly connected to the shell and attracted to the first magnetic attraction member.

3. The dental light-curing lamp according to claim 2, characterized in that The second magnetic attraction member is located in the receiving groove and used to abut the color changing piece against the groove bottom of the receiving groove.

4. The dental light-curing lamp according to claim 2, characterized in that The conversion head further comprises a fixing member fixedly connected to the side wall of the receiving groove and at least abutting against the second magnetic attraction member along the depth direction of the receiving groove.

5. The dental light-curing lamp according to claim 4, characterized in that The fixing member comprises a connecting portion connected to the side wall of the receiving groove and a limiting portion, the outside of the limiting portion being connected to the connecting portion, and the inside being protruded towards the central axis direction of the receiving groove for limiting the movement of the second magnetic attraction member towards the handpiece; and / or, The first magnetic attraction member and the second magnetic attraction member are both annular structures and their shapes and sizes are adapted to each other, and the color changing piece is coaxially arranged with the second magnetic attraction member.

6. The dental light-curing lamp according to claim 5, characterized in that The thickness of the limiting portion ranges from 0.4mm to 1.1mm along the depth direction of the receiving groove; and / or, The connecting portion is glued between the side wall of the receiving groove; and / or, The connecting portion is threadedly connected between the side wall of the receiving groove; and / or, The fixing member is annular structure; and / or, The thickness of the color changing piece ranges from 0.15mm to 0.3mm along the depth direction of the receiving groove; and / or, The color changing piece can comprise at least one of a filter and a fluorescent sheet; or, The light source is a blue light source, and the color changing piece is a yellow fluorescent sheet.

7. The dental light-curing lamp according to claim 1, characterized in that The conversion head further comprises a light guide member, the shell comprises a first shell and a second shell, the receiving groove comprises a first sub-receiving groove and a second sub-receiving groove, the first sub-receiving groove is located in the first shell, the second sub-receiving groove is located in the second shell, and the groove bottom of the second sub-receiving groove is provided with a light outlet; Along the direction from the handpiece to the color changing piece, the cross-sectional area of the first sub-receiving groove is equal, the cross-sectional area of the second sub-receiving groove and the light guide member gradually decreases, the color changing piece is located in the first sub-receiving groove, the side wall of the color changing piece abuts against the side wall of the first sub-receiving groove, the light guide member is located in the second sub-receiving groove, and one end abuts against the color changing piece and the other end penetrates out of the light outlet.

8. The dental light-curing lamp according to claim 7, characterized in that The end of the light guide member away from the color changing piece is provided with a light emitting portion penetrating in the light outlet, and the end of the light guide member close to the color changing piece is provided with a light entering portion and a refraction groove, the range of the orthographic projection of the light entering portion towards the light outlet is greater than or equal to the range of the orthographic projection of the light emitting portion in the light outlet. The range of the orthogonal projection of the refractive groove towards the light outlet is separated from the range of the orthogonal projection of the light outlet part, and the refractive groove is used for refracting the light incident to the refractive groove to the light outlet part.

9. The dental light-curing lamp according to claim 8, characterized in that The refractive groove is provided with a refractive surface used for refracting light, and forms an acute angle with the color changing part, and the angle of the acute angle is 0-90°; and / or, The refractive groove is circumferentially arranged on the light inlet part.

10. A photocuring machine characterized by comprising: The light curing machine comprises the dental light curing lamp according to any one of claims 1-9.

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