Optical system and camping lamp

Abstract

The optical system comprises a light reflecting lens, a light guiding lens and a light source set, the light guiding lens is arranged on the periphery of the light reflecting lens, the light source set is arranged at the top ends of the light reflecting lens and the light guiding lens, the light source set comprises an LED light source and a control circuit, and the control circuit is connected with the LED light source. Light emitted by the LED light source enters the reflective lens, is output after being repeatedly reflected by the reflective lens, and is output after forming a gradual change type step light beam through the light guide lens, and the control circuit is used for switching light source modes. The light path is repeatedly reflected at the lens part through the reflective lens, so that light spots are full in details, better in uniformity and rich in lighting effect; the light guide lens forms a gradual change type stepped light guide column, so that the decrease of energy of light in the light guide column is reduced, and the longitudinal illumination uniformity is improved; by adopting the design of the top light source, the situation that a large number of light sources need to be evenly distributed on the side face in the conventional design is avoided, and the effect of even lighting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, and particularly relates to an optical system and a camping lamp. Background Art

[0002] In camping and outdoor adventure activities, lighting equipment is one of the crucial pieces of equipment. Especially a camping lamp with a soft light effect can not only provide sufficient lighting but also create a warm and comfortable atmosphere at night, enhancing the camping experience. The existing soft light technology for camping lamps mainly relies on the design of a soft light cover. Through the semi-transparent or refractive optical principle and the addition of a light diffusing agent in the optical components, the light experiences a complex scattering path inside the soft light cover to achieve the purpose of softening the light.

[0003] However, this traditional soft light optical system has significant technical limitations. Firstly, to achieve a more uniform soft light effect, this system often needs to be equipped with a large number of light sources, which not only increases the complexity and manufacturing cost of the lamp but also makes it difficult to control the overall weight and volume, being unfavorable for outdoor carrying and use. Secondly, since the light experiences multiple scatterings and absorptions inside the soft light cover, the light output efficiency is greatly reduced, and some light energy is wasted unnecessarily and cannot be fully utilized for actual lighting needs. This not only affects the battery life of the camping lamp but also increases energy consumption, which is contrary to the current environmental protection concept of energy conservation and emission reduction.

[0004] In addition, the traditional soft light design has certain limitations in light distribution and regulation, and it is difficult to meet the requirements of the complex and changeable outdoor environment. For example, when high-brightness lighting is needed to see distant objects clearly, the soft light effect may weaken the light penetration and affect the visual effect; while when a soft atmosphere needs to be created, the lighting effect may be poor due to insufficient light sources. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, this application provides an optical system and a camping lamp, aiming to improve the light output efficiency, achieve a more uniform and controllable soft light effect, and take into account portability, battery life, and environmental adaptability to meet the needs of high-quality lighting equipment for outdoor adventure activities.

[0006] The technical means adopted by the utility model to solve its technical problems is as follows: An optical system, the improvement lies in that it includes: a reflective lens, a light guiding lens, and a light source group. The light guiding lens is arranged on the periphery of the reflective lens, and the light source group is arranged at the top of the reflective lens and the light guiding lens. The light source group includes an LED light source and a control circuit. The light emitted by the LED light source enters the reflective lens and is output after being repeatedly reflected by the reflective lens. At the same time, it forms a gradient stepped light beam after passing through the light guiding lens and is output. The control circuit is used to switch the light source mode.

[0007] In the above technical solution, the reflective lens as a whole is in the shape of a frustum of a cone with a smaller upper part and a larger lower part, and scale-like lenses are arranged at intervals along the side wall of the frustum; the light guide lens is in a shape of gradually changing stripes.

[0008] In the above technical solution, the reflective lens adopts a micro-structured surface process, and the reflective lens and the light guide lens are integrally formed.

[0009] In the above technical solution, the control circuit includes a power supply module, a drive control module, and a switch module, where:

[0010] The power supply module adopts a buck-type voltage regulator;

[0011] The drive control module includes a control chip and a drive module. The drive module includes a MOS transistor, a diode, and a resistor; one end of the resistor is connected to the control chip and the gate of the MOS transistor, the other end of the resistor is connected to the source of the MOS transistor and the positive electrode of the diode, and the negative electrode of the diode and the drain of the MOS transistor are connected to the LED light source;

[0012] The switch module includes a resistor, a capacitor, and a switch. By opening and closing the switch, different circuit conductions are switched to switch the light source mode.

[0013] The technical means adopted by the present utility model to solve its technical problems is: a camping lamp, including the optical system as described above. The improvement lies in that it further includes: a lamp head, a lamp body, and a lamp tail connected in sequence. The lamp head includes a lamp head body having an installation cavity, and the light source group in the light source system is installed in the installation cavity.

[0014] In the above technical solution, the camping lamp further includes a USB interface. One end of the USB interface is connected to the control circuit, and the other end is installed on the outer side wall of the lamp head. A USB cap is provided on the USB interface.

[0015] In the above technical solution, the bottom of the lamp body is in a spiral opening shape. The reflective lens and the light guide lens are sleeved on the lamp body, and the lamp body is spirally connected to the lamp tail.

[0016] In the above technical solution, the lamp head further includes a knob, a pressing piece, and a spring. By rotating the knob, the pressing piece presses the spring to complete the switching of the light source.

[0017] In the above technical solution, an annular groove is provided at the bottom of the lamp tail, and a corresponding annular magnet is provided in the groove.

[0018] In the above technical solution, a first waterproof rubber ring is provided between the lamp head and the lamp body, and a second waterproof rubber ring is provided between the lamp body and the lamp tail.

[0019] The beneficial effects of the present utility model are as follows: By means of a reflective lens, the light path is repeatedly reflected in the lens part, making the spot details plump, the uniformity better, and the light effect rich; By means of a light guide lens, a gradient stepped light guide column is formed, reducing the energy decrease of light in the light guide column and improving the longitudinal illuminance uniformity; By adopting the design of a top light source, it gets rid of the need for a large number of uniformly distributed light sources on the side in the conventional design in the past to achieve the effect of uniform light effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a camping lamp shown in an embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram of a reflective lens and a light guide lens shown in an embodiment of the present utility model;

[0022] Figure 3 It is a light effect diagram of a camping lamp shown in an embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of a power supply module shown in an embodiment of the present utility model;

[0024] Figure 5 It is a schematic diagram of a drive control module shown in an embodiment of the present utility model;

[0025] Figure 6 It is a schematic diagram of a switch module shown in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] The concept, specific structure and technical effects generated by the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present utility model can be combined interactively without conflicting with each other.

[0028] As described above, in view of the problems existing in the soft light technology of existing camping lamps, the present application provides a new optical system and camping lamp, as Figure 1As shown, the optical system includes a reflective lens, a light guide lens, and a light source group. The light guide lens is disposed around the reflective lens. The light source group is disposed at the top of the reflective lens and the light guide lens. The light source group includes an LED light source and a control circuit. The light emitted by the LED light source enters the reflective lens, is repeatedly reflected by the reflective lens and then output, and at the same time forms a gradient stepped light beam through the light guide lens and then is output. The control circuit is used to switch the light source mode.

[0029] In a possible implementation, as Figure 2 shown, the overall shape of the reflective lens A is a frustum of a cone with a smaller top and a larger bottom. Scale-like lenses are arranged at intervals along the side wall of the frustum. In an exemplary embodiment, the width of the scale-like lens is 2.6 mm, and six layers are arranged at intervals of 4 mm; the light guide lens B is in a gradient stripe shape and has a length of 71.8 mm.

[0030] As Figure 3 shown, Figure 3 (a) is a partial light ray diagram, Figure 3 (b) is a global light ray diagram, Figure 3 (c) is a cylindrical light spot diagram. The reflective lens adopts a microstructured surface process, which allows the light path to be repeatedly reflected in the lens part, making the light spot details full, the uniformity better, and the light effect rich; the light guide lens forms a gradient stepped light guide column, reducing the energy reduction of light in the light guide column and improving the longitudinal illuminance uniformity; thus achieving a more uniform output light effect.

[0031] In a possible implementation, the control circuit includes a power supply module, a drive control module, and a switch module. The power supply module and the switch module are respectively connected to the drive control module.

[0032] In an exemplary embodiment, as Figure 4 shown, the power supply module uses an ME6209 step-down voltage regulator. The voltage regulator is a CMOS step-down voltage regulator with high ripple rejection ratio, low power consumption, low voltage drop, and overcurrent and short-circuit protection.

[0033] In an exemplary embodiment, as Figure 5 shown, the drive control module includes a control chip and a drive module. The drive module includes a MOS tube, a diode, and a resistor; one end of the resistor is connected to the control chip and the gate of the MOS tube, the other end of the resistor is connected to the source of the MOS tube and the positive pole of the diode, and the negative pole of the diode and the drain of the MOS tube are connected to the LED light source.

[0034] Optionally, the present application provides five LED light sources. By adjusting PWM1, PWM2, PWM3, PWM4, and PWM5 through the control chip, the brightness and color temperature of different LED light sources can be adjusted. Combining with the above optical system, a uniform color mixing effect can be achieved.

[0035] In a possible implementation manner, the LED light sources include, but are not limited to, high-color-temperature lamp beads, low-color-temperature lamp beads, and RGB color-changing lamp beads. Through the above driving control module, the switching of multiple light sources, multiple color temperatures, multiple colors, and multiple modes can be realized.

[0036] In an exemplary embodiment, as Figure 6 shown, the switch module includes a resistor, a capacitor, and a switch. By opening and closing the switch S1, different circuit conductions are switched, thereby switching the light source mode.

[0037] In a possible implementation manner, the present application provides a camping lamp, as Figure 1 shown, including the optical system described above, and further including: a lamp head, a lamp body, and a lamp tail connected in sequence. The lamp head includes a lamp head body having an installation cavity, and the light source group in the light source system is installed in the installation cavity.

[0038] Among them, from top to bottom, the lamp head further includes a knob 1, a pressing piece 2, and a first spring 3. An "H"-shaped silica gel 4 is arranged between the pressing piece 2 and the first spring 3. The knob 1 is provided with evenly spaced grooves for increasing the friction during rotation. By rotating the knob 1, the pressing piece 2 presses the first spring 3, thereby completing the switching of the light source. The silica gel 4 has a certain compression elasticity. When the pressure of the pressing piece 2 is applied to the first spring 3, part of the impact force is absorbed by the silica gel 4, playing a buffering role to protect the first spring 3 from being directly damaged by force.

[0039] An arc-shaped hook 5 is further arranged on the lamp head for conveniently hanging the camping lamp; and a USB interface. One end of the USB interface is connected to the control circuit, and the other end is installed on the outer side wall of the lamp head. A USB cap 6 is arranged on the USB interface, which can effectively prevent tiny particles such as dust and dirt from entering the inside of the USB interface, keep the interface clean, extend the service life of the USB interface, and maintain the good operation state of the device.

[0040] A light guide column 7, a lamp board 8, a contact piece 9, a second spring 10, and a third spring 11 are further arranged on the lamp head.

[0041] Among them, the light guide column 7 guides the light emitted by the light source to ensure that the light can propagate along a predetermined path. In the embodiment of the present application, the light emitted by the light source can be more concentrated and effectively irradiated into the lamp body through the guidance of the light guide column 7; several LED light sources are integrated on the lamp board 8.

[0042] The contact piece 9, the second spring 10, and the third spring 11 are used to support the lamp head and the lamp body, ensuring that when subjected to external forces (such as wind blowing, collision, etc.), vibrations and shakes can be reduced, thereby maintaining the stability and continuity of the lighting effect.

[0043] The bottom of the lamp body 12 is in a spiral opening shape. The reflective lens A and the light guide lens B are sleeved on the lamp body 12, and the lamp body 12 is screwed to the lamp tail.

[0044] The lamp tail includes a fourth spring 13, a PCB board 14, a fluorescent ring 15, a bottom cover 16, a nut 17, and a magnet 18.

[0045] Among them, the control circuit of the LED light source is integrated on the PCB board 14. The PCB board 14 is electrically connected to the lamp board 8 through the third spring 11. Through the control circuit on the PCB board 14, the brightness, color, and blinking mode of the LED light source can be precisely adjusted to achieve diverse lighting effects.

[0046] The fluorescent ring 15 is designed as a multifunctional indicator light, used to display the power level, working status of the camping lamp, or the activation status of specific functions (such as SOS distress signal).

[0047] The bottom cover 16 is provided with an annular groove, and an annular magnet 18 corresponding to it is arranged in the groove, used to adsorb the camping lamp on metal products.

[0048] A first waterproof rubber ring 19 is arranged between the lamp head and the lamp body, and a second waterproof rubber ring 20 is arranged between the lamp body and the lamp tail, used to provide a tight sealing effect, preventing rainwater, dew, or other moisture from invading the interior through the gaps of the lamp, effectively protecting the electronic components, circuit boards, etc. inside the camping lamp from moisture erosion. This can not only prevent the components from being damaged by moisture but also avoid safety hazards such as short circuits caused by moisture.

[0049] The above is a specific description of the preferred embodiment of the present invention. However, the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An optical system, characterized in that: It includes a reflective lens, a light-guiding lens and a light source group. The light-guiding lens is arranged at the periphery of the reflective lens. The light source group is arranged at the top of the reflective lens and the light-guiding lens. The light source group includes an LED light source and a control circuit. The light emitted by the LED light source enters the reflective lens, is repeatedly reflected by the reflective lens and is output. At the same time, it is output after forming a gradual step beam through the light-guiding lens. The control circuit is used to switch the light source mode.

2. The optical system according to claim 1, characterized in that The reflective lens is in the shape of a truncated cone with a small top and a large bottom as a whole, and scale-shaped lenses are arranged at intervals along the side walls of the truncated cone; the light-guiding lens is in the shape of a gradient stripe.

3. The optical system according to claim 1, characterized in that The reflective lens adopts a microstructure surface process, and the reflective lens and the light-guiding lens are integrally formed.

4. The optical system according to claim 1, characterized in that The control circuit includes a power supply module, a drive control module and a switch module, wherein: The power supply module adopts a step-down voltage regulator; The drive control module includes a control chip and a drive module, and the drive module includes a MOS tube, a diode and a resistor; one end of the resistor is connected to the control chip and the gate of the MOS tube, the other end of the resistor is connected to the source of the MOS tube and the positive electrode of the diode, and the negative electrode of the diode and the drain of the MOS tube are connected to the LED light source; The switch module includes a resistor, a capacitor and a switch, and the light source mode is switched by switching different circuits on and off.

5. A camping light, comprising the optical system according to any one of claims 1 to 4, characterized in that: Also includes: A lamp holder, a lamp body and a lamp tail are connected in sequence, wherein the lamp holder comprises a lamp holder body having a mounting cavity, and the light source group is mounted in the mounting cavity.

6. The camping light according to claim 5, characterized in that: The camping lamp also includes a USB interface, one end of which is connected to the control circuit, and the other end is installed on the outer wall of the lamp head, and a USB cap is provided on the USB interface.

7. The camping light according to claim 5, characterized in that: The bottom of the lamp body is in a spiral opening shape, the reflective lens and the light-guiding lens are sleeved on the lamp body, and the lamp body and the lamp tail are spirally connected.

8. The camping light according to claim 5, characterized in that: The lamp holder also includes a knob, a pressing plate and a spring. The knob is rotated so that the pressing plate presses the spring to complete the switching of the light source.

9. The camping light according to claim 5, characterized in that: The bottom of the lamp tail is provided with an annular groove, and a corresponding annular magnet is arranged in the groove.

10. The camping light according to claim 5, characterized in that: A first waterproof rubber ring is arranged between the lamp head and the lamp body, and a second waterproof rubber ring is arranged between the lamp body and the lamp tail.

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