Optical fiber medical head lamp

Abstract

The utility model belongs to the technical field of medical and health instruments, and discloses an optical fiber medical head lamp which comprises a light source module, an optical fiber, a wearing structure and a lamp holder assembly, the light source module is provided with LED lamp bead sets which are arranged in a central symmetry mode, and a convergent mirror set is arranged between the LED lamp bead sets and a reflex reflector. The reflex reflector and the optical axis of the convergent mirror group are arranged in a 45-degree inclined mode, the lamp holder assembly is connected with the wearing structure in a pluggable mode, a light spot shaping lens is arranged in a lamp holder of the lamp holder assembly, light spots emitted by the LED lamp bead group are converged through the convergent mirror group and reflected by the reflex reflector at the 45-degree angle to enter the optical fiber, and the light spots are transmitted to the lamp holder assembly through the optical fiber. And the light is finally emitted through the light spot shaping lens. The optical fiber medical head lamp is easy to wear while the illumination intensity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical and sanitary equipment, and mainly relates to an optical fiber medical headlamp. Background Art

[0002] Medical headlights are commonly used for outpatient examinations and surgical auxiliary lighting, and are particularly suitable for surgeries involving small incisions and deep cavities. These portable headlights provide illumination coaxial with the operator's line of sight, significantly reducing blind spots in the surgical field and facilitating operation.

[0003] Current portable medical headlamps generally consist of a lamp head, a wearing structure, cables, and a customized power supply assembly. The light source mostly uses a high-power LED light source. Usually, the LED light source and the light spot shaping optical path are integrated into the lamp head. The lamp head is fixed to the operator's forehead through a mechanical structure and connected to the power supply assembly through a cable to achieve power supply and light source control.

[0004] High-power LED light sources have the characteristics of low energy consumption, long service life, and high lighting intensity. However, they generate a large amount of heat energy loss during operation, which increases the temperature of the lamp head. Since the lamp head is close to the user's forehead, too high a temperature may cause discomfort to the operator. Therefore, medical portable headlamps usually use single LED lamp beads, and the power mostly does not exceed 3W.

[0005] However, the lighting intensity of a single LED lamp bead is limited. If the brightness of the lamp head is increased only by increasing the number of LED lamp beads, the heat generated will increase significantly, and higher requirements will be placed on the heat dissipation of the headlamp. However, a heat dissipation design that meets the requirements will cause the volume and weight of the lamp head structure to increase, making the headlamp no longer portable. Therefore, there is an urgent need for a fiber optic medical headlamp that can improve its lighting intensity while still meeting the requirement of being easy to wear. Utility Model Content

[0006] In order to solve the above problems, the present invention provides a fiber optic medical headlamp, which improves its lighting intensity while still meeting the requirement of being easy to wear.

[0007] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0008] A fiber optic medical headlamp comprises a light source module, an optical fiber, a wearing structure and a lamp holder assembly. The light source module is provided with an LED lamp bead group arranged symmetrically with a center, a converging lens group is arranged between the LED lamp bead group and the folding reflector, and the optical axis of the folding reflector and the converging lens group is inclined at 45 degrees. The lamp holder assembly is pluggable and connected to the wearing structure. A light spot shaping lens is provided in the lamp holder of the lamp holder assembly. The light spot emitted by the LED lamp bead group is converged by the converging lens group, reflected at 45 degrees by the folding reflector, enters the optical fiber, is transmitted by the optical fiber to the lamp holder assembly, and is finally emitted through the light spot shaping lens.

[0009] Furthermore, the light source module includes a light source module shell, which includes a light source lens barrel and a reflective lens barrel. A light board is arranged on the inner side of the top of the light source lens barrel, the LED lamp bead group is arranged on the light board, and a converging lens group is arranged on the inner side of the tail end. The reflective lens barrel is an L-shaped elbow lens barrel with a 45︒ beveled tube wall, the inlet end of which is sleeved on the tail end of the light source lens barrel, the outlet end is connected to the optical fiber, and the folding reflector is arranged at the 45︒ beveled tube wall.

[0010] Furthermore, heat dissipation fins are provided on the outside of the light source barrel.

[0011] Furthermore, the folding reflector is fixed on a reflector base, and the reflector base is set at the 45-degree bevel cylinder wall by a plurality of adjustment screws.

[0012] Furthermore, a ball mounting groove is provided at the center of the bottom surface of the reflector base, and the adjustment ball is provided between the reflector base and the 45-degree beveled tube wall.

[0013] Furthermore, a steel spring is sleeved on the adjusting screw, and the steel spring is arranged between the reflector base and the 45-degree bevel tube wall.

[0014] Furthermore, the LED lamp bead group includes multiple LED lamp beads, and the converging lens group includes a first converging lens and a second converging lens. The first converging lens and the second converging lens are both plano-convex lenses, and the convex surfaces of the two are arranged opposite to each other.

[0015] Furthermore, the lamp head assembly includes a lamp head, an optical fiber interface is provided at the end of the lens barrel of the lamp head, and a spot shaping lens is provided at the tail of the lens barrel.

[0016] Furthermore, the wearing structure includes a headband and a lamp head angle adjustment buckle, and the lamp head assembly also includes a lamp head buckle, which is arranged at the end of the lamp head and is connected to the lamp head angle adjustment buckle in a plug-in manner.

[0017] Furthermore, it also includes a power control module and a power line, and the power control module and the light source module are connected via the power line.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The LED light source is integrated into the light source module, which avoids the impact of high temperature at the lamp head on the user.

[0020] 2. The heat dissipation design of the LED light source is not limited by volume and weight, which controls the light source at a suitable temperature, extends the service life of the lamp beads, and improves the light energy conversion efficiency.

[0021] 3. The light source can be a combination of multiple LED lamp beads, which can increase the power of the light source and thus increase the headlight intensity.

[0022] 4. The converging lens group converges the output light of the LED lamp beads to the optical fiber to achieve effective energy concentration; the folding reflector is used to adjust the focus position of the light spot, shorten the optical path, and improve the compactness of the light source module structure; the light spot shaping lens realizes the expansion and shaping of the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a cross-sectional view of the light source module of the present invention.

[0025] Figure 3 This is a schematic structural diagram of the lamp holder assembly of the present invention.

[0026] Figure 4 It is a cross-sectional view of the lamp holder assembly of the present invention.

[0027] Figure 5 This is the optical path diagram of the utility model.

[0028] Figure 6 This is the light path diagram of a traditional medical headlamp.

[0029] Including: 1. Power control module; 2. Power cord;

[0030] 3. Light source module; 3-1. Power cord fixing cover; 3-2. Light source barrel; 3-3. Reflector barrel; 3-3-1. Beveled barrel wall; 3-4. Light board; 3-5. LED lamp assembly; 3-6. First converging lens; 3-7. Second converging lens; 3-8. Folding reflector; 3-9. Reflector base; 3-10. Adjustment ball; 3-11. Adjustment screw;

[0031] 4. Optical fiber;

[0032] 5. Wearing structure; 5-1. Headband adjustment knob; 5-2. Lamp head angle adjustment buckle;

[0033] 6. Lamp holder assembly; 6-1. Lamp holder; 6-1-1. Fiber optic interface; 6-1-2. Light spot shaping lens; 6-2. Lamp holder buckle. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention will be further explained below with reference to the accompanying drawings.

[0035] like Figures 1 to 5 As shown, a fiber optic medical headlamp includes a power control module 1, a power cord 2, a light source module 3, an optical fiber 4, a wearing structure 5, and a lamp head assembly 6. The lamp head assembly 6 is movably mounted on the wearing structure 5. The power control module 1 and the light source module 2 are connected via the power cord 2. The lamp head assemblies 5 are connected via the optical fiber 3 and transmit optical signals.

[0036] The power control module 1 and the light source module 3 are connected via a power line 2. The power supply can be provided by a rechargeable lithium battery. The control module can realize the on / off control and brightness adjustment of the headlight, thereby realizing the power supply and control of the light source module 3 by the power control module 1.

[0037] The light source module 3 includes a light source module housing, an LED lamp bead group, a converging mirror group and a turning reflector.

[0038] The light source module shell is L-shaped as a whole, and includes a power cord fixing cover 3-1, a light source lens barrel 3-2 and a reflective lens barrel 3-3. The center of the power cord fixing cover 3-1 is provided with a top end that is sleeved on the light source lens barrel 3-2, and the reflective lens barrel 3-3 is sleeved on the tail end of the light source lens barrel 3-2.

[0039] The power cord fixing cover 3 - 1 has a power cord hole at its center for fixing the power cord 2 .

[0040] The light source lens barrel 3-2 is cylindrical, and a plurality of heat dissipation fins are arranged on the outer circumference to ensure good heat dissipation of the LED lamp bead group in the barrel when working; a lamp board 3-4 is provided on the inner side of the top of the light source lens barrel 3-2, the outer side of the lamp board 3-4 is connected to the power line 2, and the inner side is symmetrically arranged with the center to weld the LED lamp bead group 3-5. The LED lamp bead group is preferably 4 to 5 LED lamp beads. Figure 2 Take 4 LED lamp beads as an example for demonstration; a converging lens group is provided on the inner side of the tail end of the light source barrel 3-2, and the converging lens group is composed of a first converging lens 3-6 and a second converging lens 3-7. The first converging lens 3-6 and the second converging lens 3-7 are both plano-convex lenses, and the convex surfaces of the two are arranged opposite to each other, and are respectively fixed in the barrel of the light source barrel 3-2 by pressing rings.

[0041] If the number of LED lamp beads is increased, it is necessary to increase the heat dissipation fins outside the light source barrel 3-2, and the size of the converging lens 3 also needs to be increased accordingly.

[0042] The reflector barrel 3-3 is an L-shaped elbow barrel with a 45° beveled wall 3-3-1. Its inlet end is sleeved over the rear end of the light source barrel 3-2. The folding reflector 3-8 is secured to the top surface of the reflector base 3-9 with structural adhesive. The reflector base is secured to the 45° beveled wall 3-3-1 of the reflector barrel by several adjustment screws 3-11. A ball bearing groove is provided at the center of the bottom surface of the reflector base 3-9 to accommodate an adjustment ball 3-10. The adjustment ball 3-10 is positioned between the reflector base and the 45° beveled wall 3-3-1. Fine-tuning the adjustment screw 3-11, with the adjustment screw as the central fulcrum, finely adjusts the inclination angle of the folding reflector 3-8, ultimately ensuring that the folding reflector 3-8 forms a 45° angle with the optical axis. The adjustment ball allows for more continuous and precise adjustment of the inclination angle of the folding reflector 3-8. The outlet end of the reflecting mirror tube 3 - 3 is connected to the optical fiber 4 .

[0043] The deflecting mirrors 3-8 are mainly used to adjust the focus position of the light spot and accurately align the input end of the optical fiber to reduce light energy loss and improve the headlight illumination and light spot uniformity.

[0044] At the same time, a steel spring (not shown in the drawings) can be sleeved on the adjusting screw 3-11. The steel spring is set between the reflector base 3-9 and the 45-degree bevel tube wall 3-3-1. After the folding reflector 3-8 is adjusted to a suitable angle, the elastic force of the steel spring can support the reflector base and cooperate with the adjusting screw to lock the position of the reflector base.

[0045] The wearing structure 5 includes a headband, a headband adjustment knob 5-1 and a lamp head angle adjustment buckle 5-2. The headband adjustment knob 5-1 is arranged on the top and rear side of the headband, the lamp head mounting assembly is arranged on the front side of the headband, and a fiber optic bayonet is arranged on the headband adjustment knob 5-1. The other end of the optical fiber 4 passes through the headband adjustment knob 5-1 on the rear side of the clamp headband, passes through the headband adjustment knob 5-1 on the top of the clamp headband, passes through the lamp head angle adjustment buckle 5-2, and is finally connected to the fiber optic interface 6-2-1 of the lamp head assembly 6.

[0046] The lamp head assembly 6 includes a lamp head 6-1 and a lamp head buckle 6-2; the lamp head buckle 6-2 is arranged at the end of the lamp head 6-1, and is used to connect with the lamp head angle adjustment buckle 5-2, and the angle of the lamp head lighting is adjusted by the lamp head angle adjustment buckle 5-2; the end of the lens barrel of the lamp head 6-1 is provided with a fiber optic interface 6-1-1, and the fiber optic interface 6-1-1 adopts a standard type of FC interface, including a fiber optic bayonet and a fiber optic base, and the fiber optic base is fixed to the lens barrel of the lamp head 6-1 by an adjusting screw, and the position and angle of the fiber optic base can be fine-tuned by fine-tuning the adjusting screw to ensure the brightness and uniformity of the output light spot, and a light spot shaping lens 6-1-2 is provided at the tail of the lens barrel and is fixed to the tail of the lens barrel by a pressure ring, and the distance between the optical fiber emitting end face and the light spot shaping lens is a fixed value, so as to form a light spot with uniform illumination.

[0047] The lamp head assembly is used to expand and shape the light beam emitted by the light source module through the optical fiber, forming a bright, uniform, fixed-size lighting spot at a specific lighting distance.

[0048] In this embodiment, the connection between the lamp head assembly 6 and the wearing structure 5 is plug-in, which makes it easy for the lamp head assembly 6 to be suitable for different wearing structures, such as glasses frames and headbands, and expands its usage scenarios according to actual needs.

[0049] like Figure 6 As shown in the figure, the traditional optical route is that the light emitted by a single LED lamp bead passes through a plano-convex lens and a light spot shaping lens arranged in sequence. The plano-convex lens is mainly used to converge the light emitted by the lamp bead and reduce its divergence angle. The light spot shaping lens realizes the shaping of the light beam and forms a uniform lighting spot at a fixed distance.

[0050] like Figure 5 As shown, compared with the setting of the traditional optical path, in this embodiment, power is supplied to multiple LED lamp beads through the power control module, and the light emitted by the LED lamp beads is converged by the converging lens group, and then reflected at 45° by the folding reflector to enter the optical fiber. The folding reflector is mainly used to adjust the focusing position of the light spot and accurately align it with the input end of the optical fiber. The output end of the optical fiber is connected to the optical fiber interface at the tail of the lamp head assembly. The light beam is emitted through the light spot shaping lens to form a light spot with uniform illumination, thereby realizing the expansion and shaping of the light source.

[0051] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fiber optic medical headlamp, characterized in that: The invention comprises a light source module (3), an optical fiber (4), a wearing structure (5) and a lamp head assembly (6), wherein the light source module (3) is provided with an LED lamp bead group (3-5) arranged in a central symmetrical manner, a converging lens group is arranged between the LED lamp bead group (3-5) and the folding reflector (3-8), the folding reflector (3-8) and the optical axis of the converging lens group are inclined at 45 degrees, the lamp head assembly (6) is pluggable and connected to the wearing structure (5), a light spot shaping lens (6-1-2) is arranged in the lamp head (6-1) of the lamp head assembly (6), the light spot emitted by the LED lamp bead group is converged by the converging lens group, reflected at 45 degrees by the folding reflector (3-8), enters the optical fiber (4), is transmitted by the optical fiber (4) to the lamp head assembly (6), and is finally emitted through the light spot shaping lens (6-1-2).

2. The optical fiber medical headlamp according to claim 1, characterized in that: The light source module (3) comprises a light source module housing, which comprises a light source lens barrel (3-2) and a reflective lens barrel (3-3). A light board (3-4) is arranged on the inner side of the top end of the light source lens barrel (3-2), an LED lamp bead group is arranged on the light board (3-4), and a converging lens group is arranged on the inner side of the tail end. The reflective lens barrel (3-3) is an L-shaped elbow lens barrel with a 45° beveled tube wall (3-3-1), an inlet end of which is sleeved on the tail end of the light source lens barrel (3-2), an outlet end of which is connected to an optical fiber (4), and a folding reflector (3-8) is arranged at the 45° beveled tube wall (3-3-1).

3. The optical fiber medical headlamp according to claim 2, characterized in that: Heat dissipation fins are provided on the outside of the light source lens barrel (3-2).

4. The optical fiber medical headlamp according to claim 2, characterized in that: The folding reflector (3-8) is fixed on a reflector base (3-9), and the reflector base (3-9) is set at a 45-degree bevel tube wall (3-3-1) by a plurality of adjustment screws (3-11).

5. The optical fiber medical headlamp according to claim 4, characterized in that: A ball mounting groove is provided at the center of the bottom surface of the reflector base (3-9), and an adjustment ball (3-10) is provided between the reflector base and the 45° beveled tube wall (3-3-1).

6. The optical fiber medical headlamp according to claim 4, characterized in that: A steel spring is sleeved on the adjusting screw (3-11), and the steel spring is arranged between the reflector base (3-9) and the 45° beveled tube wall (3-3-1).

7. The optical fiber medical headlamp according to claim 1, characterized in that: The LED lamp bead group (3-5) includes a plurality of LED lamp beads, and the converging lens group includes a first converging lens (3-6) and a second converging lens (3-7). The first converging lens (3-6) and the second converging lens (3-7) are both plano-convex lenses, and the convex surfaces of the two are arranged opposite to each other.

8. The optical fiber medical headlamp according to claim 1, characterized in that: The lamp head assembly (6) comprises a lamp head (6-1); an optical fiber interface (6-1-1) is provided at the end of the lens barrel of the lamp head (6-1); and a light spot shaping lens (6-1-2) is provided at the tail of the lens barrel.

9. The optical fiber medical headlamp according to claim 1, characterized in that: The wearing structure (5) comprises a headband and a lamp head angle adjustment buckle (5-2); the lamp head assembly (6) further comprises a lamp head buckle (6-2); the lamp head buckle (6-2) is arranged at the end of the lamp head (6-1) and is connected to the lamp head angle adjustment buckle (5-2) in a plug-and-unplug manner.

10. The optical fiber medical headlamp according to claim 1, characterized in that: It also includes a power control module (1) and a power line (2), and the power control module (1) and the light source module (3) are connected via the power line (2).

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