Dental light curing machine with variable brightness

Abstract

The invention relates to the technical field of dental light curing equipment, and discloses a dental light curing machine with variable brightness, which comprises a light source, a first driving unit, a second driving unit, a distance detection unit, a light intensity detection unit, a time module and a control unit which are arranged at the end part of a front joint of a handle part, a control panel is arranged on the handle part and comprises a display module and control keys. The distance between the light source and the curing object can be automatically detected, the corresponding light intensity gear and the curing time gear are automatically selected, and the risk of insufficient curing is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dental light-curing equipment, and particularly relates to a dental light-curing machine with variable brightness. Background Art

[0002] A dental light-curing machine is a dental restoration device that can cure light-curing resin in a short time by emitting light radiation. The light-curing equipment is usually equipped with a light-emitting source of light-emitting diodes (LEDs). The wavelength range of the light-emitting diodes (LEDs) used for curing is between 420 - 480 nm. During the light-curing process, the dental repair resin material can achieve efficient curing only when it meets certain light intensity and light exposure time. During use, due to different operating habits of different operators, the distance between the irradiation light source and the curing object will be different, resulting in different light intensities. When the same curing time is used for different distances, there is a risk of insufficient curing. Summary of the Invention

[0003] The object of the present invention is to solve the above problems and provide a dental light-curing machine with variable brightness, which can select the light intensity gear and the curing time gear according to the distance between the light source and the curing object, and reduce the risk of insufficient curing.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A dental light-curing machine with variable brightness includes a light source, a first driving unit, a second driving unit, a distance detection unit, a light intensity detection unit, a time module, and a control unit installed at the end of the front joint of the handle part. The control unit is installed inside the handle part, and a control panel is provided on the handle part. The control panel includes a display module and control buttons; The distance detection unit is used to monitor the distance between the light source and the curing object. The time module is used to detect the curing time so that the light source can be automatically turned off within a preset time. The distance detection unit, the time module are connected to the control unit. The control unit selects the magnitude of the current passing through the first light-emitting unit according to the distance between the light source and the curing object monitored by the distance detection unit, and automatically adjusts the light intensity gear and the curing time gear of the first light-emitting unit; The light source includes a first light-emitting unit and a second light-emitting unit. A housing is provided outside the light source. The first light-emitting chip is connected to the control unit through a first driving unit, and the second light-emitting chip is connected to the control unit through a second driving unit. The first driving unit is used to drive the first light-emitting unit to turn on according to the signal output by the control unit, and the second driving unit is used to drive the first light-emitting unit to turn on according to the signal output by the control unit. The light intensity detection unit is used to detect the light intensity of the light source. The first light-emitting unit serves as the main curing light source, and the second light-emitting unit serves as the light attenuation compensation unit, which is used to compensate the light intensity of the first light-emitting unit when the first light-emitting unit has light attenuation at the current time gear and light intensity gear.

[0005] Further, each of the first light-emitting unit and the second light-emitting unit includes one or more light-emitting diodes. The light-emitting diodes of the first light-emitting unit are mounted on the central area of the circuit board, and the light-emitting diodes of the second light-emitting unit are mounted in an annular array on the outer periphery of the circuit board.

[0006] Further, an end portion of the front connector is provided with a first mounting cavity, which is in a bowl-shaped structure. A heat sink is provided in the first mounting cavity, and the circuit board is fixed on the heat sink.

[0007] Further, a lens is also included. The lens is provided in the housing and is used to focus the light emitted by the light source.

[0008] Further, the lens has a fixed outer ring, and the front connector is provided with a fixing groove for fixing the fixed outer ring.

[0009] Further, the housing is detachably connected to the front connector, and a pressing ring for pressing the fixed outer ring when connected is provided on the inner surface of the housing.

[0010] Further, the housing is made of a light-tight material. The housing has a first side wall portion, a second side wall portion, and a light-emitting portion. The first side wall portion and the second side portion are made of light-tight materials, and the light-emitting portion is made of a light-transmitting material. Reflective coatings are provided on the inner wall surfaces of the first side wall portion and the second side portion.

[0011] Further, a fixing portion is provided on the first side wall portion, and a clamping groove for clamping with the fixing portion is provided at the end of the front connector. A plurality of locking grooves are spaced apart on the outside of the fixing portion, and a plurality of locking blocks that can be movably engaged with the locking grooves are correspondingly provided on the front connector. An elastic mechanism for locking or unlocking the locking blocks by pressing is provided on the front connector.

[0012] Further, the elastic mechanism includes a pressing part, a spring, a wedge block and a movable rod. A second installation cavity is provided on the front connector. The spring, the wedge block and the pressing part are sequentially arranged in the second installation cavity from top to bottom. The pressing part extends out of the installation cavity. One end of the movable rod is connected to the locking block. An inclined chute is provided on the wedge block. The other end of the movable rod is slidably connected to the inclined chute. An avoidance groove for the up-and-down movement of the movable rod is provided on the wedge block.

[0013] Further, a plurality of positioning pieces are provided at intervals on the outer side of the fixing part, and a positioning groove is provided on the front connector.

[0014] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects: The present invention detects the distance between the light source and the curing object through the distance detection unit and feeds it back to the control unit. The control unit can automatically select the corresponding light intensity gear and curing time gear according to the detected distance data, reducing the risk of insufficient curing. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the system connection structure of the present invention; Figure 2 is a schematic diagram of the structure of the present invention; Figure 3 is the present invention Figure 2 partial enlarged view; Figure 4 is the present invention Figure 3 partial enlarged view of A in; Figure 5 is a schematic diagram of the arrangement structure of the light source of the present invention; Figure 6 is a schematic diagram of the structure of the lens of the present invention; Figure 7 is a schematic diagram of the structure of the housing of the present invention; Figure 8 is a schematic diagram of the structure of the wedge block of the present invention; In the figure: 10 - handle part, 11 - control unit, 12 - first driving unit, 13 - second driving unit, 14 - first light-emitting unit, 15 - second light-emitting unit, 16 - distance detection unit, 17 - light intensity detection unit, 18 - time module, 19 - control panel, 191 - display module, 192 - control button, 20 - front joint, 21 - first installation cavity, 30 - lens, 31 - fixed outer ring, 40 - housing, 41 - first side wall part, 42 - second side wall part, 43 - light-emitting part, 44 - fixing part, 45 - pressing ring, 46 - locking groove, 47 - positioning piece, 50 - circuit board, 60 - elastic mechanism, 61 - spring, 62 - wedge block, 63 - pressing part, 64 - movable rod, 65 - second installation cavity, 70 - heat sink, 80 - locking block. Detailed implementation manners

[0016] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0017] The mention of "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0018] As Figures 1 to 3 shown, a dental light-curing machine with variable brightness includes a light source, a first driving unit 12, a second driving unit 13, a distance detection unit 16, a light intensity detection unit 17, a time module 18 and a control unit 11 installed at the end of the front joint 20 of the handle part 10. The control unit 11 is installed inside the handle part 10, and a control panel 19 is provided on the handle part 10. The control panel 19 includes a display module 191 and a control button 192.

[0019] The control unit 11 is capable of executing different control programs. In some cases, the control programs are automatically selected, while in some other cases, they are selected through a selection device which can be implemented as, for example, a button on the handheld part.

[0020] The distance detection unit 16 is used to monitor the distance between the light source and the curing object, and the time module 18 is used to detect the curing time and automatically turn off the light source within a preset time. The distance detection unit 16 and the time module 18 are connected to the control unit 11. The control unit 11 selects the magnitude of the current passing through the first light emitting unit 14 according to the distance between the light source and the curing object monitored by the distance detection unit 16, and automatically adjusts the light intensity level and the curing time level of the first light emitting unit 14. The distance detection unit 16 can be one or more distance sensors. In one embodiment, distance sensors are arranged around the outer side of the housing 40.

[0021] It can be understood that before use, the distance between the light source and the curing object, as well as the corresponding radiation light intensity level and the irradiation duration, can be set by the operator through a preset program or through the buttons on the handheld part. During use, the distance sensor detects the distance and feeds it back to the control unit 11. The control unit 11 determines the preset radiation light intensity level and time level corresponding to the detected distance, and then automatically selects the corresponding radiation level and irradiation time level.

[0022] The light source includes a first light emitting unit 14 and a second light emitting unit 15. A housing 40 is provided outside the light source. The first light emitting chip is connected to the control unit 11 through the first driving unit 12, and the second light emitting chip is connected to the control unit 11 through the second driving unit 13. The first driving unit 12 is used to drive the first light emitting unit 14 to turn on according to the signal output by the control unit 11, and the second driving unit 13 is used to drive the first light emitting unit 14 to turn on according to the signal output by the control unit 11. The light intensity detection unit 17 is used to detect the light intensity of the light source. The first light emitting unit 14 serves as the main curing light source, and the second light emitting unit 15 serves as the light decay compensation unit, which is used to compensate for the light intensity of the first light emitting unit 14 when the first light emitting unit 14 has light decay at the current time level and light intensity level. The light intensity detection unit 17 can be one or more light intensity sensors. In one embodiment, light intensity sensors are arranged around the inner wall of the housing 40.

[0023] During operation, first, the first light-emitting unit 14 is turned on. The light intensity sensor detects the light intensity at the light-emitting port of the light source and feeds it back to the control unit 11. The control unit 11 compares the light intensity of the first light-emitting unit 14 with the initial light intensity corresponding to the light intensity gear where it is located. When the detected light intensity data is lower than the light intensity at its location, the control unit 11 calculates through a program the required light intensity to be strengthened in percentage, obtains the current value of the second light-emitting unit 15, and issues a control signal to control the second light-emitting unit 15 to turn on to compensate for the light intensity of the first light-emitting unit 14. The operator can perform compensation through a preset method. For example, the program presets a range value of the light intensity lower than a preset percentage and correspondingly sets the supplementary current value.

[0024] By setting the first light-emitting unit 14 and the second light-emitting unit 15, with the first light-emitting unit 14 as the main curing light source and the second light-emitting unit 15 as the compensation light source, when the first light-emitting unit 14 undergoes light attenuation, the control unit can calculate through a program to confirm the current required to compensate the first light-emitting unit and control the second unit to turn on to compensate for the light loss of the first light-emitting unit, ensuring the curing efficiency.

[0025] As Figure 5 shown, each of the first light-emitting unit 14 and the second light-emitting unit 15 includes one or more light-emitting diodes. The light-emitting diodes of the first light-emitting unit 14 are mounted in the central area of the circuit board 50, and the light-emitting diodes of the second light-emitting unit 15 are mounted in an annular array on the outer periphery of the circuit board 50. In one embodiment, the first light-emitting unit 14 includes 4 light-emitting diodes (LEDs) arranged in the central area, and the second light-emitting unit 15 includes 4 light-emitting diodes (LEDs) arranged on the outer periphery. The two groups of 4 light-emitting diodes can be respectively connected in series.

[0026] The end of the front joint 20 is provided with a first installation cavity 21. The first installation cavity 21 is in a bowl-shaped structure. A heat sink 70 is provided in the first installation cavity 21, and the circuit board 50 is fixed on the heat sink 70. Heat dissipation is facilitated through the heat sink 70. The heat sink 70 can be made of an aluminum-based material, and the heat sink 70 provides a good heat dissipation effect for the first light-emitting unit 14 and the second light-emitting unit 15. The bowl-shaped structure of the first installation cavity 21 is conducive to reflecting light out and reducing light loss.

[0027] As Figure 6 shown, the light curing machine further includes a lens 30. The lens 30 is arranged in the housing 40 and is used to focus the light emitted by the light source. The material of the lens 30 can be one of PC and PMMA. For convenient disassembly, fixing, and the lens 30 has a fixed outer ring 31, and the front joint 20 is provided with a fixing groove for fixing the fixed outer ring 31.

[0028] The light curing machine further includes a housing 40 covering the outside of the lens 30. The housing 40 is detachably connected to the front joint 20. A pressing ring 45 is provided on the inner surface of the housing 40, which can press the fixed outer ring 31 when connected. When installing the housing 40, the pressing ring 45 on the housing 40 presses the fixed outer ring 31 of the lens 30, thereby fixing the lens 30 and improving the convenience of installing the lens 30.

[0029] In one embodiment, the housing 40 is made of light-impermeable material. The housing 40 has a first side wall portion 41, a second side wall portion 42, and a light-emitting portion 43. The first side wall portion 41 and the second side portion are made of light-impermeable material, and the light-emitting portion 43 is made of light-transmitting material. Reflective coatings are provided on the inner wall surfaces of the first side wall portion 41 and the second side portion. When a reflective layer is provided on the inner wall surface of the housing 40, the light beam emitted by the light source can be reflected when it hits the inner wall surface of the housing 40, reducing light loss.

[0030] To facilitate the disassembly and assembly of the housing 40, a fixing portion 44 is provided on the first side wall portion 41. A clamping groove that clamps with the fixing portion 44 is provided at the end of the front joint 20. A plurality of locking grooves 46 are spaced apart on the outside of the fixing portion 44. A plurality of locking blocks 80 that can be movably inserted into the locking grooves 46 are correspondingly provided on the front joint 20. An elastic mechanism 60 for locking or unlocking the locking blocks 80 by pressing is provided on the front joint 20. When pressed, the locking block 80 is unlocked from the locking groove 46. When released, the locking block 80 can be automatically locked in the locking groove 46 under the action of the elastic mechanism 60.

[0031] Such as Figure 4 , the elastic mechanism 60 includes a pressing portion 63, a spring 61, a wedge block 62, and a movable rod 64. A second installation cavity 65 is provided on the front joint 20. The spring 61, the wedge block 62, and the pressing portion 63 are sequentially arranged in the second installation cavity 65 from top to bottom. The pressing portion 63 extends outside the second installation cavity 65. One end of the movable rod 64 is connected to the locking block 80. An inclined chute is provided on the wedge block 62. The other end of the movable rod 64 is slidably connected to the inclined chute. An avoidance groove for the up and down movement of the movable rod 64 is provided on the wedge block 62. When the pressing portion 63 is pressed, the wedge block 62 moves upward in the installation cavity. At this time, the spring 61 is compressed, and the movable rod 64 moves downward along the inclined chute of the wedge block 62, driving the locking block 80 to move outward to achieve unlocking. When the pressing portion 63 is released, the spring 61 rebounds, causing the movable rod 64 to move upward along the inclined chute of the wedge block 62, driving the locking block 80 to move inward, and the locking block 80 is inserted into the locking groove 46 to achieve locking.

[0032] In one embodiment, a plurality of positioning pieces 47 are spaced apart on the outside of the fixing portion 44. A positioning groove is provided on the front joint 20. Thus, it is convenient for each locking groove 46 and each locking block 80 to correspond one by one.

[0033] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made thereto, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements that do not depart from the spirit and concept of the present invention are within the protection scope of the present invention.

Claims

1. A dental light-curing machine with variable brightness, characterized in that, It includes a light source, a first driving unit, a second driving unit, a distance detection unit, a light intensity detection unit, a time module and a control unit installed at the end of the front joint of the handle part. The control unit is installed inside the handle part. A control panel is provided on the handle part, and the control panel includes a display module and control buttons; The distance detection unit is used to monitor the distance between the light source and the curing object, and the time module is used to detect the curing time so that the light source can be automatically turned off within a preset time. The distance detection unit, the time module are connected to the control unit. The control unit selects the magnitude of the current passing through the first light-emitting unit according to the distance between the light source and the curing object monitored by the distance detection unit, and automatically adjusts the light intensity level and the curing time level of the first light-emitting unit.

2. The variable brightness dental light-curing machine according to claim 1, wherein The light source includes a first light-emitting unit and a second light-emitting unit. A housing is provided outside the light source. The first light-emitting chip is connected to the control unit through the first driving unit, and the second light-emitting chip is connected to the control unit through the second driving unit. The first driving unit is used to drive the first light-emitting unit to turn on according to the signal output by the control unit, and the second driving unit is used to drive the first light-emitting unit to turn on according to the signal output by the control unit. The light intensity detection unit is used to detect the light intensity of the light source. The first light-emitting unit serves as the main curing light source, and the second light-emitting unit serves as the light decay compensation unit. When there is light decay in the first light-emitting unit at the current time level and light intensity level, it is used to compensate the light intensity of the first light-emitting unit.

3. The variable brightness dental light-curing machine according to claim 2, wherein, Each of the first light-emitting unit and the second light-emitting unit includes one or more light-emitting diodes. The light-emitting diodes of the first light-emitting unit are mounted in the central area of the circuit board, and the light-emitting diodes of the second light-emitting unit are mounted in a circular array on the outer periphery of the circuit board.

4. A variable brightness dental light curing machine according to claim 3, characterized in that, A first installation cavity is provided at the end of the front joint. The first installation cavity is in a bowl-shaped structure. A heat sink is provided in the first installation cavity, and the circuit board is fixed on the heat sink.

5. A variable brightness dental light curing machine according to claim 1, wherein, It further includes a lens. The lens is provided inside the housing and is used to gather the light emitted by the light source.

6. The variable brightness dental light curing machine according to claim 5, characterized in that, The lens has a fixed outer ring, and the front joint is provided with a fixed groove for fixing the fixed outer ring.

7. A variable brightness dental light curing machine according to claim 6, characterized in that, The housing is detachably connected to the front joint, and a pressing ring for pressing the fixed outer ring when connected is provided on the inner surface of the housing.

8. A variable brightness dental light curing machine according to claim 2, characterized in that The housing is made of light-tight material. The housing has a first side wall portion, a second side wall portion and a light-emitting portion. The first side wall portion and the second side portion are made of light-tight material, and the light-emitting portion is made of light-transmitting material. Reflection coatings are provided on the inner wall surfaces of the first side wall portion and the second side portion.

9. The variable brightness dental light curing machine according to claim 8, wherein, A fixing portion is provided on the first side wall portion. A clamping groove for clamping with the fixing portion is provided at the end of the front joint. A plurality of locking grooves are provided at intervals outside the fixing portion, and a plurality of locking blocks that can be movably clamped into the locking grooves are correspondingly provided on the front joint. An elastic mechanism for locking or unlocking the locking blocks by pressing is provided on the front joint.

10. A variable-brightness dental light-curing machine according to claim 9, characterized in that, The elastic mechanism includes a pressing part, a spring, a wedge block and a movable rod. A second installation cavity is provided on the front joint. The spring, the wedge block and the pressing part are sequentially arranged in the second installation cavity from top to bottom. The pressing part extends out of the installation cavity. One end of the movable rod is connected to the locking block. An inclined chute is provided on the wedge block. The other end of the movable rod is slidably connected to the inclined chute. An avoidance groove for the up-and-down movement of the movable rod is provided on the wedge block. A plurality of positioning pieces are arranged at intervals on the outer side of the fixing part. A positioning groove is provided on the front joint.

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