A road lighting luminaire with safety protection

Abstract

This invention relates to a road lighting fixture with safety protection, belonging to the field of laser lighting technology. It solves one of the problems of inconvenient maintenance, laser leakage, high color temperature adjustment costs, and lack of safety protection in existing road lighting fixtures. The road lighting fixture with safety protection includes a laser generating component, a hyperboloid reflector, a laser conversion component, and a fluorescent protective cover. The laser generating component, the hyperboloid reflector, the fluorescent protective cover, and the laser conversion component are arranged sequentially along the laser transmission path, with the fluorescent protective cover covering the outside of the laser conversion component. This invention prevents blue laser leakage into the environment, improves the safety and lighting effect of road lighting fixtures, reduces color temperature adjustment costs, and facilitates maintenance.

Description

Technical Field

[0001] This invention relates to the field of laser lighting technology, and more particularly to a road lighting fixture with safety protection. Background Technology

[0002] In traditional LED lighting installations, the circuitry and LED light-emitting modules are housed inside the lamp head, resulting in a large size and weight. When the circuitry or LED light-emitting modules malfunction, repairs or replacements must be performed at heights, which is inconvenient and increases overall costs.

[0003] With the development of lighting technology, the cost of laser diodes has gradually decreased, and their performance has become more stable. Compared with other light sources, laser lighting has advantages such as small size, long lifespan, high contrast, and low energy consumption. Therefore, using lasers as a lighting source has become a new choice. Laser lighting can be divided into two types according to its principle: blue light (blue laser) excites fluorescent materials to achieve white light lighting, and red, green, and blue lasers synthesize white lasers or true-color light lighting.

[0004] For lighting devices that use lasers as a light source, laser leakage must meet safety regulations. This is because during the application of laser lighting devices, the laser light generated by the high-power laser needs to be transmitted within the lighting device. Some of the laser light may leak from the lighting device into the environment during transmission. This leaked laser light may exceed the safety limits for the human eye, causing harm to humans or the environment. Furthermore, laser leakage can create light spots in the illumination, affecting the lighting effect.

[0005] For laser lighting devices that use blue light to excite fluorescent materials to achieve white light illumination, blue light excitation of standard yellow phosphors typically produces cool white light with a high color temperature (6000K-7000K), which exceeds the color temperature range comfortable for the human eye and is unsuitable for the color temperature requirements of specific scenarios. To obtain warmer white light (such as 2800K-6000K) that better meets the comfort of the human eye or the needs of specific scenarios, it is usually necessary to replace or use phosphor materials with special formulations. Different color temperature requirements correspond to different phosphor compositions and structures, leading to the need for the production end to purchase and manage various types of high-value phosphor materials, increasing the complexity of the supply chain and manufacturing costs.

[0006] Since road lighting devices are generally installed outdoors, their overall structure is susceptible to damage from natural or other external forces, such as toppling, breaking, or being damaged in specific scenarios. Furthermore, there is a possibility of some components separating during maintenance. In these scenarios, if the laser generating system is still operational, the high-powered laser poses a risk of harming surrounding facilities, plants, animals, and people.

[0007] Therefore, there is an urgent need for a road lighting fixture with safety protection to prevent laser light leakage and to cut off the laser generation system when the lighting device is damaged or structurally separated, so as to prevent the laser from causing damage to the environment or people. Summary of the Invention

[0008] Based on the above analysis, the present invention aims to provide a road lighting fixture with safety protection to solve one of the problems of inconvenient maintenance, laser leakage, high cost of color temperature adjustment, and lack of safety protection of existing road lighting fixtures.

[0009] This invention provides a road lighting fixture with safety protection, including a laser generating component, a hyperboloid reflector, a laser conversion component, and a fluorescent protective cover; the laser generating component, the hyperboloid reflector, the fluorescent protective cover, and the laser conversion component are arranged sequentially along the laser transmission path, and the fluorescent protective cover is disposed on the outside of the laser conversion component.

[0010] Furthermore, the laser generating component is used to emit a blue laser beam, and the fluorescent shield is used to convert the high-energy stray light generated during the transmission and conversion of the blue laser beam into low-energy visible light.

[0011] Furthermore, the laser conversion component includes a fluorescent exciter, and the hyperboloid reflector is used to reflect and converge the blue laser beam emitted by the laser generating component to the laser conversion component. The blue laser beam reflected by the hyperboloid reflector passes through the fluorescent protective cover and irradiates the fluorescent exciter. After being irradiated by the blue laser beam, the fluorescent exciter converts the blue laser beam into pure white light.

[0012] Furthermore, the fluorescent protective cover includes a first fluorescent conversion film, which is disposed on the inner surface and / or outer surface of the fluorescent protective cover.

[0013] Furthermore, the fluorescent protective cover is made of a transparent material doped with fluorescent powder.

[0014] Furthermore, it also includes a light-diffusing lamp head, a vertical lamp pole, and a connecting base. The vertical lamp pole is set vertically, one end of which is fixedly connected to the light-diffusing lamp head, and the other end of which is fixedly connected to the connecting base. The connecting base is configured to be fixed on the road surface.

[0015] Furthermore, the hyperboloid reflector, the laser conversion component, and the fluorescent protective cover are disposed inside the uniform light head; the laser generating component is disposed inside the bottom side of the vertical light pole.

[0016] Furthermore, the light-diffusing lamp head includes a vertical section, an inclined section, and a light-diffusing housing. The vertical section is connected to the vertical lamp post. The inclined section is inclinedly disposed on the side of the vertical section away from the vertical lamp post. The light-diffusing housing is disposed on the bottom side of the inclined section and covers the bottom opening of the inclined section.

[0017] Furthermore, the light-diffusing housing is used to mix the light inside the light-diffusing lamp head evenly, forming a uniform light spot, and illuminating the environment with the light.

[0018] Furthermore, the uniform light head also includes a first reflector and a second reflector, both of which are disposed within the inclined section. The first reflector is disposed on the side opposite to the bottom opening of the inclined section, and the second reflector is disposed opposite to the first reflector.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. The road lighting fixture with safety protection in this invention comprises a laser generating component, a hyperboloid reflector, a fluorescent protective cover, and a laser conversion component arranged sequentially along the laser transmission path. The fluorescent protective cover is placed outside the laser conversion component. The hyperboloid reflector focuses the laser beam emitted by the laser generating component onto the fluorescent exciter, thereby improving the focusing effect of the laser beam and reducing stray light.

[0020] 2. The road lighting fixture with safety protection in this invention uses a fluorescent protective cover to convert high-energy stray light generated during laser transmission and excitation into low-energy visible light, preventing stray light leakage into the environment and improving the safety performance of the road lighting fixture. A first fluorescence conversion film is provided on the inner and / or outer surfaces of the fluorescent protective cover, or the fluorescent protective cover is made of a transparent material doped with phosphor. Compared to using phosphors for excitation, using a first fluorescence conversion film made of phosphor or adding phosphor to the material of the fluorescent protective cover can significantly reduce costs and improve economic efficiency.

[0021] 3. In the road lighting fixture with safety protection of this invention, the pure white light generated by the fluorescent exciter passes through the fluorescent protective cover and illuminates the environment. The first fluorescence conversion film on the fluorescent protective cover or the phosphor in the fluorescent protective cover can reduce the color temperature of the pure white light, converting it into warm white light with a lower color temperature, thereby improving the user comfort of the road lighting fixture. Furthermore, stray light, after passing through the fluorescent protective cover, is converted into low-energy visible light with a lower color temperature by the first fluorescence conversion film or the phosphor in the fluorescent protective cover. This low-energy visible light mixes with the warm white light, adjusting the color temperature of the warm white light and reducing it, so that the final illumination light emitted into the environment conforms to the range of human eye comfort, thus improving the user comfort of the road lighting fixture.

[0022] 4. The road lighting fixture with safety protection in this invention has a laser generating component located inside the bottom side of the vertical lamp post, facilitating maintenance or replacement of the laser generating component and improving the ease of maintenance of the road lighting fixture. The light-diffusing housing mixes the light inside the light-diffusing lamp head evenly, forming a uniform light spot and illuminating the environment; by adjusting the light intensity distribution through the light-diffusing housing, the uniformity of the light spot is improved, thus enhancing the lighting effect.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Figure 1 is one of the overall structural schematic diagrams of the road lighting fixture with safety protection according to the present invention; Figure 2 This is a schematic diagram of the structure of the laser conversion component in this invention; Figure 3 This is the second schematic diagram of the overall structure of the road lighting fixture with safety protection in this invention; Figure 4 This is a schematic diagram of the structure of the first connecting seat in this invention; Figure 5 This is a schematic diagram of the structure of the second connecting seat in this invention; Figure 6 This is a schematic diagram showing the connection between the protection monitoring path and the light-emitting power supply path in this invention.

[0025] Figure label: 1-Laser generating assembly; 11-Laser; 12-Laser controller; 2-Hyperboloidal mirror; 3-Laser conversion component; 31-Fluorescence exciter; 32-Concentrating reflective film; 33-Primary reflector; 331-Second fluorescence conversion film; 4-Fluorescent protective cover; 5-Heat-conducting components; 61-Uniform light head; 611-Vertical section; 612-Inclined section; 613-Uniform light housing; 614-First reflector; 615-Second reflector; 62-Vertical light pole; 63-Connecting base; 71-First connector; 711-First lower conductive ring; 7111-First positive contact; 7112-First negative contact; 7113-First mounting ring; 712-First upper conductive ring; 7121-Second positive contact; 7122-Second negative contact; 7123-Second mounting ring; 713-Mounting component; 7131-Mounting hole; 72 - Protection monitoring switch; 73 - Ultra-fine copper wire; 731 - First copper wire; 732 - Second copper wire; 733 - Third copper wire; 74-Second connector; 741-Second lower conductive ring; 7411-Third positive contact; 7412-Third negative contact; 742-Second upper conductive ring; 7421-Fourth positive contact; 7422-Fourth negative contact; 743-Anti-reflective sealing lens. Detailed Implementation

[0026] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0027] Example 1 To address the problem of low safety performance of lighting fixtures due to laser leakage, a specific embodiment of the present invention discloses a road lighting fixture with safety protection, such as... Figure 1 and Figure 2 As shown, it includes a laser generating component 1, a hyperboloid reflector 2, a laser conversion component 3, and a fluorescent protective cover 4; the laser generating component 1, the hyperboloid reflector 2, the fluorescent protective cover 4, and the laser conversion component 3 are arranged sequentially along the laser transmission path, and the fluorescent protective cover 4 is placed on the outside of the laser conversion component 3.

[0028] The laser conversion component 3 includes a fluorescent exciter 31. The laser generating component 1 is used to emit a blue laser beam. The hyperboloid reflector 2 is used to reflect and converge the laser beam emitted by the laser generating component 1 to the laser conversion component 3. The laser beam reflected by the hyperboloid reflector 2 passes through the fluorescent protective cover 4 and irradiates the fluorescent exciter 31 of the laser conversion component 3. After being irradiated by the blue laser beam, the fluorescent exciter 31 converts the blue laser beam into pure white light.

[0029] The hyperboloidal reflector 2 focuses the laser beam onto the fluorescent exciter 31, improving the focusing effect of the laser beam and reducing stray light. The fluorescent protective cover 4 is used to convert the high-energy stray light generated during laser transmission and excitation into low-energy visible light, preventing stray light from leaking into the environment and improving the safety performance of road lighting fixtures.

[0030] Specifically, the fluorescent protective cover 4 is an arc-shaped cover with one end open, and the arc-shaped cover is provided with a beam passing hole. The laser beam reflected by the hyperboloid mirror 2 passes through the beam passing hole on the arc-shaped cover and irradiates the fluorescent exciter 31.

[0031] Furthermore, to address the problem of poor light concentration, such as Figure 2 As shown, the laser conversion assembly 3 also includes a focusing reflective film 32 and a main reflector 33. The main reflector 33 is fixedly connected to the fluorescent exciter 31, and the main reflector 33 is disposed on the rear side of the fluorescent exciter 31 along the laser transmission path. The focusing reflective film 32 is disposed on the side of the fluorescent exciter 31 near the main reflector 33. The focusing reflective film 32 is used to reflect the pure white light excited in the fluorescent exciter 31 back to the fluorescent exciter 31 in the opposite direction to the laser beam, thereby increasing the light intensity.

[0032] The reflective surface of the main reflector 33 faces the fluorescent exciter 31. The main reflector 33 is used to reflect the pure white light irradiated onto the main reflector 33 into the environment, thereby improving the light-gathering effect and light intensity. The main reflector 33 has an arc-shaped structure, which can reflect pure white light within a specific angle range, further enhancing the light-gathering effect.

[0033] Furthermore, to address the high cost of color temperature adjustment, the fluorescent protective cover 4 includes a first fluorescence conversion film (not shown in the figure), which is disposed on the inner and / or outer surfaces of the fluorescent protective cover 4; or the fluorescent protective cover 4 is made of a transparent material doped with phosphor. For example, the fluorescent protective cover 4 is integrally molded from transparent PC plastic, glass, or quartz doped with 0.15% to 1.5% phosphor by mass through injection molding or sintering.

[0034] The cost of adding phosphor to the first fluorescent conversion film or the fluorescent protective cover 4 is significantly lower than that of the fluorescent exciter 31. Moreover, the fluorescent protective cover 4 can simultaneously prevent stray light from leaking into the environment and regulate the color temperature, simplifying the structure of road lighting fixtures and reducing the manufacturing and usage costs of road lighting fixtures.

[0035] The pure white light generated by the fluorescent exciter 31 is reflected by the focusing reflective film 32 and the main reflector 33, passes through the fluorescent protective cover 4, and illuminates the environment. The first fluorescent conversion film on the fluorescent protective cover 4 or the phosphor in the fluorescent protective cover 4 can reduce the color temperature of the pure white light, converting it into warm white light with a lower color temperature, thus improving the user comfort of the road lighting fixtures. Furthermore, stray light, after passing through the fluorescent protective cover 4, is converted into low-energy visible light with a lower color temperature by the first fluorescent conversion film or the phosphor in the fluorescent protective cover 4. This low-energy visible light mixes with the warm white light, adjusting the color temperature of the warm white light and reducing it, so that the final illumination light emitted into the environment conforms to the range of human eye comfort, further improving the user comfort of the road lighting fixtures.

[0036] For application scenarios with different color temperature requirements, simply replace the fluorescent protective cover 4 with one that has different phosphor materials, phosphor dosage and / or first phosphor conversion film thickness to improve the convenience of color temperature adjustment and reduce the cost of color temperature adjustment.

[0037] Furthermore, to address the issue of excessive heat causing the fluorescent exciter 31 to fail, this embodiment of the road lighting fixture with safety protection also includes a heat-conducting component 5, which is fixedly connected to the laser conversion component 3. The heat-conducting component 5 is positioned on the side of the main reflector 33 away from the fluorescent exciter 31, and its position corresponds to that of the fluorescent exciter 31. The main reflector 33 is made of aluminum alloy. The main reflector 33 transfers the heat generated by the fluorescent exciter 31 to the heat-conducting component 5, which then dissipates the heat from the fluorescent exciter 31 into the environment, preventing heat accumulation that could cause the fluorescent exciter 31 to overheat and improving its service life.

[0038] For example, the heat-conducting component 5 is an aluminum finned heat sink.

[0039] Furthermore, to address the issue of insufficient security protection capabilities, such as Figure 2 As shown, a second fluorescence conversion film 331 is provided on the main reflector 33. The second fluorescence conversion film 331 is located between the main reflector 33 and the focusing reflector 32. The second fluorescence conversion film 331 converts stray light irradiated on the main reflector 33 into low-energy visible light to prevent stray light from leaking into the environment. The second fluorescence conversion film 331 and the fluorescence shield 4 form a two-level protection to improve the safety protection capability of the road lighting fixture.

[0040] Furthermore, to address the inconvenience of maintaining road lighting fixtures, such as Figure 3As shown, the road lighting fixture with safety protection in this embodiment also includes a uniform light head 61, a vertical light pole 62, and a connecting base 63. The vertical light pole 62 is vertically arranged, with one side of the vertical light pole 62 fixedly connected to the uniform light head 61, and the other side of the vertical light pole 62 fixedly connected to the connecting base 63; the connecting base 63 is configured to be fixed to the road surface. The hyperboloid reflector 2, the laser conversion component 3, and the fluorescent protective cover 4 are disposed inside the uniform light head 61; the laser generating component 1 is disposed inside the bottom side of the vertical light pole 62, facilitating the maintenance or replacement of the laser generating component 1 and improving the maintenance convenience of the road lighting fixture.

[0041] The laser conversion component 3 and the inner wall of the uniform light head 61 are fixedly connected. The heat conduction component 5 and the main reflector 33 of the laser conversion component 3 transfer the heat generated by the fluorescent exciter 31 to the uniform light head 61, preventing the uniform light head 61 from freezing in cold environments. The heat generated by the laser generating component 1 during operation is dissipated into the vertical light pole 62, preventing the vertical light pole 62 from freezing in cold environments. The heat generated by the fluorescent exciter 31 and the laser generating component 1 during operation prevents the road lighting fixture from freezing in cold environments, eliminating the need for additional heating and insulation equipment. In non-cold environments, the heat generated by the fluorescent exciter 31 and the laser generating component 1 during operation is dissipated into the environment through the uniform light head 61 and the vertical light pole 62, respectively, preventing overheating of the internal environment of the road lighting fixture and improving its service life.

[0042] Furthermore, to address the issue of poor illumination uniformity, the uniform light head 61 includes a vertical section 611, an inclined section 612, and a uniform light housing 613. The vertical section 611 is connected to the vertical lamp post 62. The inclined section 612 is inclinedly positioned on the side of the vertical section 611 away from the vertical lamp post 62. The uniform light housing 613 is positioned on the bottom side of the inclined section 612 and covers the bottom opening of the inclined section 612. A hyperboloidal reflector 2 is positioned between the vertical section 611 and the inclined section 612 to reflect the laser beam emitted from the vertical lamp post 62 to the inclined section 612 and converge it onto the fluorescent exciter 31. The uniform light housing 613 is used to uniformly mix the light within the uniform light head 61, forming a uniformly distributed illumination light, and illuminating the environment. By adjusting the light intensity distribution through the uniform light housing 613, the uniformity of the illumination light spot is improved, thus enhancing the illumination effect.

[0043] Furthermore, to address the issue of insufficient light intensity, the uniform light head 61 also includes a first reflector 614 and a second reflector 615. Both the first reflector 614 and the second reflector 615 are disposed within the inclined section 612. The first reflector 614 is positioned on the side opposite to the bottom opening of the inclined section 612, and the second reflector 615 is positioned opposite to the first reflector 614. The first reflector 614 and the second reflector 615 are used to reflect the light within the inclined section 612 to the uniform light housing 613, preventing the light within the inclined section 612 from being unable to enter the environment and improving the light intensity of the road lighting fixture.

[0044] Example 2 To address the lack of safety protection structures in existing road lighting fixtures, another specific embodiment of the present invention, based on embodiment one, such as... Figure 1 and Figure 3 As shown, it also includes a first connecting seat 71, a protection monitoring switch 72, and an ultra-fine copper wire 73; the protection monitoring switch 72 is disposed on the first connecting seat 71, the first connecting seat 71 is disposed at the connection position between the vertical lamp post 62 and the connecting base 63, and the ultra-fine copper wire 73 is disposed along the inner wall surface of the vertical lamp post 62 and the uniform light head 61; the first connecting seat 71, the protection monitoring switch 72, and the ultra-fine copper wire 73 are connected in series to form a protection monitoring path, so as to realize the safety monitoring and protection of the laser equipment.

[0045] like Figure 6 As shown, the laser generating assembly 1 includes a laser 11 and a laser controller 12. A protection monitoring switch 72 controls the power supply and de-energization of the laser controller 12 and the laser 11. When energized, the laser controller 12 controls the laser 11 to turn on and off. When the protection monitoring path is connected, the protection monitoring switch 72 controls the laser controller 12 and the laser 11 to be energized, allowing the laser controller 12 to control the laser 11 to turn on and off. When the protection monitoring path is disconnected, the protection monitoring switch 72 controls the laser controller 12 and the laser 11 to de-energize and stop working. When the laser equipment is damaged by external force, the ultra-fine copper wire 73 will disconnect under the external force, or the first connecting seat 71 will disconnect, promptly cutting off the protection monitoring path, triggering safety protection. The protection monitoring switch 72 then controls the laser 11 to de-energize and shut down, stopping laser emission, preventing laser leakage, and improving the safety of the laser equipment and the reliability of its safety protection.

[0046] Furthermore, to address the issue of complex safety protection structures, such as Figure 3 and Figure 4As shown, the first connecting base 71 includes a first lower conductive ring 711 and a first upper conductive ring 712. The first lower conductive ring 711 and the first upper conductive ring 712 are fixedly connected and are in contact with each other through conductive contacts. The first lower conductive ring 711 is disposed within the connecting base 63, and the first upper conductive ring 712 is disposed at the inner bottom of the vertical lamp post 62.

[0047] Specifically, such as Figure 2 As shown, the first lower conducting ring 711 includes a first positive contact 7111 and a first negative contact 7112, and the first upper conducting ring 712 includes a second positive contact 7121 and a second negative contact 7122; the first positive contact 7111 and the second positive contact 7121 are in contact and connected, and the first negative contact 7112 and the second negative contact 7122 are in contact and connected.

[0048] The first positive contact 7111 of the first lower conducting ring 711 is connected to the positive E+ of the protection monitoring switch 72, the first negative contact 7112 of the first lower conducting ring 711 is connected to the negative E- of the protection monitoring switch 72, and the second positive contact 7121 and the second negative contact 7122 of the first upper conducting ring 712 are connected by an ultra-fine copper wire 73.

[0049] Specifically, the first positive contact 7111 and the positive E+ of the protection monitoring switch 72 are connected by a common wire, and the first negative contact 7112 and the negative E- of the protection monitoring switch 72 are connected by a common wire.

[0050] When the laser equipment is damaged by external force, causing the connection between the first lower conducting ring 711 and the first upper conducting ring 712 to break and / or the ultra-fine copper wire 73 to break, the protective monitoring path formed by the connection of the first connecting seat 71, the protective monitoring switch 72, and the ultra-fine copper wire 73 is broken. The protective monitoring switch 72 controls the laser 11 and the laser controller 12 to disconnect from power, preventing the laser 11 from emitting laser light. This prevents the laser emitted by the laser 11 from leaking into the environment when the road lighting fixture is not installed properly or is damaged, thus improving the safety of the road lighting fixture. Furthermore, the first connecting seat 71 and the ultra-fine copper wire 73 are connected in series to jointly participate in safety protection, improving the sensitivity and reliability of the protective monitoring path. Moreover, the structure and connection method of the first lower conducting ring 711, the first upper conducting ring 712, and the ultra-fine copper wire 73 are simple, occupy little space, and do not require significant modifications to the original structure of the road lighting fixture, making them easy to arrange in the road lighting fixture.

[0051] Furthermore, to address the problem of insufficient protective capabilities, such as Figure 1As shown, the road lighting fixture with safety protection in this embodiment also includes a second connecting seat 74, which is disposed at the connection position between the uniform light head 61 and the vertical light pole 62; the first connecting seat 71, the protection monitoring switch 72, the second connecting seat 74 and the ultra-fine copper wire 73 are connected in series to form a protection monitoring path. The first connecting seat 71 and the second connecting seat 74 are used to perform safety monitoring and protection at the two connection positions of the road lighting fixture, thereby improving the reliability and protection capability of the safety protection.

[0052] The second connecting seat 74 includes a second lower conductive ring 741 and a second upper conductive ring 742, which are fixedly connected and connected through conductive contacts. The second lower conductive ring 741 is fixedly connected to the top of the vertical lamp post 62, and the second upper conductive ring 742 is fixedly connected to the uniform light head 61.

[0053] Specifically, such as Figure 5 As shown, the second lower conducting ring 741 includes a third positive contact 7411 and a third negative contact 7412, and the second upper conducting ring 742 includes a fourth positive contact 7421 and a fourth negative contact 7422. The third positive contact 7411 and the fourth positive contact 7421 are in contact and connected, and the third negative contact 7412 and the fourth negative contact 7422 are in contact and connected.

[0054] The first lower conducting ring 711, the first upper conducting ring 712, the second lower conducting ring 741, and the second upper conducting ring 742 are all provided with a central opening to provide a path for the laser beam.

[0055] Furthermore, to address the issue of low internal environmental stability in the uniform light head 61, such as... Figure 1 As shown, the second connecting seat 74 also includes an anti-reflective sealing lens 743, which is sealed within the central opening of the second upper conductive ring 742. The anti-reflective sealing lens 743 isolates the internal space of the uniform light head 61 and the vertical lamp post 62, thereby enabling independent control of the internal environment of the uniform light head 61 and improving the reliability of the internal environment of the uniform light head 61. For example, inert gas can be introduced into the uniform light head 61 or a vacuum can be maintained inside the uniform light head 61 to improve the performance stability of the laser optical path and laser conversion component 3 inside the uniform light head 61.

[0056] Furthermore, to address the issue of insufficient sensitivity in security protection, such as Figure 3As shown, the ultrafine copper wire 73 includes a first copper wire 731, a second copper wire 732, and a third copper wire 733. The two ends of the first copper wire 731 are respectively connected to the second positive electrode contact 7121 of the first upper conducting ring 712 and the third positive electrode contact 7411 of the second lower conducting ring 741. The two ends of the second copper wire 732 are respectively connected to the second negative electrode contact 7122 of the first upper conducting ring 712 and the third negative electrode contact 7412 of the second lower conducting ring 741. The two ends of the third copper wire 733 are respectively connected to the fourth positive electrode contact 7421 and the fourth negative electrode contact 7422 of the second upper conducting ring 742. The first copper wire 731 and the second copper wire 732 are arranged inside the vertical lamp post 62, and the third copper wire 733 is arranged inside the uniform light head 61. When the road lighting fixture with safety protection is damaged, the first copper wire 731, the second copper wire 732 and / or the third copper wire 733 will be broken by force, and the protection monitoring path will be cut off in time to improve the sensitivity of safety protection.

[0057] For example, the third copper wire 733 is wound in a serpentine or spiral shape within the uniform light head 61.

[0058] For example, the ultra-fine copper wire 73 is provided with a sheath (not shown in the figure) on its outer side. The diameter of the ultra-fine copper wire 73 is 0.1-0.5 mm, which is easily broken. The sheath of the ultra-fine copper wire is made of brittle material and is also easily broken. When subjected to external force, the sheath and the ultra-fine copper wire 73 will be torn apart. The ultra-fine copper wire 73 is easy to install in road lighting fixtures, occupies little space, does not affect the structure and appearance of the road lighting fixtures, and is easy to maintain. The sheath protects the ultra-fine copper wire 73 and prevents leakage.

[0059] Furthermore, to address the issue of low connection stability of the connector, such as... Figure 4 As shown, the first lower conducting ring 711 also includes a first mounting ring 7113, and the first upper conducting ring 712 also includes a second mounting ring 7123. The first positive contact 7111 and the first negative contact 7112 are disposed on the side of the first mounting ring 7113 near the first upper conducting ring 712, and the second positive contact 7121 and the second negative contact 7122 are disposed on the side of the second mounting ring 7123 near the first lower conducting ring 711. The positions of the first positive contact 7111 and the second positive contact 7121 are corresponding, and the positions of the first negative contact 7112 and the second negative contact 7122 are corresponding. Both the first mounting ring 7113 and the second mounting ring 7123 are provided with mounting members 713. The mounting members 713 are provided with mounting holes 7131. The locking member (not shown in the figure) passes through the mounting holes 7131 to realize the fixed connection between the first lower conductive ring 711 and the first upper conductive ring 712, and to make the first positive contact 7111 and the second positive contact 7121, and the first negative contact 7112 and the second negative contact 7122 in stable contact, so as to realize the stable connection of the connector.

[0060] For example, the mounting hole 7131 is a threaded hole, and the locking elements are bolts and nuts.

[0061] The structure of the second connector 74 is the same as that of the first connector 71, and will not be described again here.

[0062] Furthermore, to address the issue of low control stability of the protection monitoring switch 72, such as... Figure 6 As shown, the protection monitoring switch 72 is an electromagnetic relay switch, including an electromagnetic coil, a moving contact, and a normally open stationary contact. The moving contact and the normally open stationary contact are positioned opposite each other. The positive terminal E+ and the negative terminal E- of the electromagnetic coil are respectively connected to the first positive terminal contact 7111 and the first negative terminal contact 7112 of the first lower conducting ring 711. The electromagnetic coil, the first connecting base 71, the ultra-fine copper wire 73, and the external AC power supply of the protection monitoring switch 72 are connected in series to form a protection monitoring path, realizing the safety monitoring and protection of the laser equipment. An AC / DC rectifier is also connected between the electromagnetic coil of the protection monitoring switch 72 and the external AC power supply.

[0063] The normally open stationary contact of the protection monitoring switch 72 is connected in series with the laser 11, the laser controller 12, and the external AC power supply to form a light-emitting power supply path. The protection monitoring path and the light-emitting power supply path share the same external AC power supply, and the protection monitoring path and the light-emitting power supply path are connected in parallel on the external AC power supply. The protection monitoring switch 72 provides power-off protection for the light-emitting power supply path.

[0064] Under normal operating conditions, the protection monitoring path is connected, the normally open stationary contact of the protection monitoring switch 72 is closed, and the light-emitting power supply path is connected, controlling the laser 11 to turn on and off via the laser controller 12. When the laser equipment is damaged or needs to be disassembled for maintenance, the connection between the first lower conducting ring 711 and the first upper conducting ring 712 of the safety protection system is disconnected, and / or the connection between the second lower conducting ring 741 and the second upper conducting ring 742 is disconnected, and / or the ultra-fine copper wire 73 is disconnected. The protection monitoring path is disconnected, the electromagnetic coil of the protection monitoring switch 72 is de-energized, the moving contact actuates, driving the normally open stationary contact to open, thereby cutting off the light-emitting power supply path, de-energizing and shutting down the laser 11 to prevent laser leakage. The electromagnetic coil of the protection monitoring switch 72 is connected in series in the protection monitoring path, and the normally open stationary contact of the protection monitoring switch 72 is connected in series in the light-emitting power supply path. The electromagnetic coil and the normally open stationary contact are electrically isolated, effectively blocking interference and improving control stability.

[0065] In this embodiment, the road lighting fixture with safety protection is installed by mounting the vertical lamp post 62 on the connecting base 63, connecting the first lower conductive ring 711 and the first upper conductive ring 712, and making the first positive contact 7111 and the second positive contact 7121 in contact and connected, and the first negative contact 7112 and the second negative contact 7122 in contact and connected; the uniform light head 61 is connected and installed to the vertical lamp post 62, connecting the second lower conductive ring 741 and the second upper conductive ring 742, and making the third positive contact 7411 and the fourth positive contact 7421 in contact and connected, and the third negative contact 7412 and the fourth negative contact 7422 in contact and connected. At this time, the protection monitoring path is connected. The first copper wire 731 and the second copper wire 732 are arranged along both sides of the vertical lamp post 62, and the third copper wire 733 is arranged inside the uniform light head 61. When the vertical lamp post 62 is damaged, the first copper wire 731 and / or the second copper wire 732 are disconnected; when the uniform light head 61 is damaged, the third copper wire 733 is disconnected, so as to shut down the laser 11 in time, prevent the laser emitted by the laser 11 from leaking into the environment, and improve the safety protection performance of the road lighting fixtures.

[0066] In this embodiment, the road lighting fixture with safety protection controls the power supply and de-energization of the laser 11 and the laser controller 12 through the protection monitoring switch 72. When the connection between the first lower conducting ring 711 and the first upper conducting ring 712 is disconnected, or the connection between the second lower conducting ring 741 and the second upper conducting ring 742 is disconnected, or the ultra-fine copper wire 73 is disconnected, the protection monitoring path is disconnected, and the protection monitoring switch 72 controls the power supply of the laser 11 and the laser controller 12 to be de-energized, so that the light-emitting power supply path is disconnected, the laser 11 cannot emit laser light, and prevents the laser emitted by the laser 11 from leaking into the environment when the road lighting fixture is not installed properly, the vertical light pole 62 falls down as a whole, the vertical light pole 62 is damaged, or the uniform light head 61 is damaged, thereby improving the safety of the road lighting fixture. The first connecting seat 71 is located at the connection between the vertical light pole 62 and the connecting base 63, and the second connecting seat 74 is located at the connection between the vertical light pole 62 and the uniform light head 61. The first connecting seat 71 and the second connecting seat 74 respectively perform safety monitoring at the two installation points. If the road lighting fixture is damaged by external force or affected by natural disasters, causing the vertical light pole 62 to fall down or the uniform light head 61 to detach, the connection between the first lower conducting ring 711 and the first upper conducting ring 712 of the first connecting seat 71 will be broken, or the connection between the second lower conducting ring 741 and the second upper conducting ring 742 of the second connecting seat 74 will be broken. At this time, the safety protection is triggered, and the protection monitoring switch 72 controls the laser 11 to turn off, performing safety monitoring on the overall structure of the laser street light. In addition, ultra-fine copper wires 73 are arranged inside both the vertical light pole 62 and the uniform light head 61 to perform local safety monitoring on the structure of the road lighting fixture, improving the comprehensiveness of safety protection.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A road lighting fixture with safety protection, characterized in that, It includes a laser generating component (1), a hyperboloid reflector (2), a laser conversion component (3), and a fluorescent shield (4); the laser generating component (1), the hyperboloid reflector (2), the fluorescent shield (4), and the laser conversion component (3) are arranged sequentially along the laser transmission path, and the fluorescent shield (4) is placed on the outside of the laser conversion component (3).

2. The road lighting fixture with safety protection according to claim 1, characterized in that, The laser generating component (1) is used to emit a blue laser beam, and the fluorescent shield (4) is used to convert the high-energy stray light generated during the transmission and conversion of the blue laser beam into low-energy visible light.

3. The road lighting fixture with safety protection according to claim 2, characterized in that, The laser conversion component (3) includes a fluorescent exciter (31). The hyperboloid mirror (2) is used to reflect and converge the blue laser beam emitted by the laser generating component (1) to the laser conversion component (3). The blue laser beam reflected by the hyperboloid mirror (2) passes through the fluorescent protective cover (4) and irradiates the fluorescent exciter (31). After being irradiated by the blue laser beam, the fluorescent exciter (31) converts the blue laser beam into pure white light.

4. The road lighting fixture with safety protection according to claim 2, characterized in that, The fluorescent protective cover (4) includes a first fluorescent conversion film, which is disposed on the inner and / or outer surfaces of the fluorescent protective cover (4).

5. The road lighting fixture with safety protection according to claim 2, characterized in that, The fluorescent protective cover (4) is made of a transparent material doped with fluorescent powder.

6. The road lighting fixture with safety protection according to claim 1, characterized in that, It also includes a uniform light head (61), a vertical light pole (62) and a connecting base (63). The vertical light pole (62) is set vertically, one end of the vertical light pole (62) is fixedly connected to the uniform light head (61), and the other end of the vertical light pole (62) is fixedly connected to the connecting base (63). The connecting base (63) is configured to be fixed on the road surface.

7. The road lighting fixture with safety protection according to claim 6, characterized in that, The hyperboloid reflector (2), the laser conversion component (3) and the fluorescent protective cover (4) are disposed inside the uniform light head (61); the laser generating component (1) is disposed inside the bottom side of the vertical light pole (62).

8. The road lighting fixture with safety protection according to claim 6, characterized in that, The uniform light head (61) includes a vertical section (611), an inclined section (612), and a uniform light housing (613). The vertical section (611) is connected to the vertical lamp post (62). The inclined section (612) is inclinedly disposed on the side of the vertical section (611) away from the vertical lamp post (62). The uniform light housing (613) is disposed on the bottom side of the inclined section (612) and covers the bottom opening of the inclined section (612).

9. The road lighting fixture with safety protection according to claim 8, characterized in that, The uniform light housing (613) is used to mix the light in the uniform light head (61) evenly to form a uniform light spot and to illuminate the environment.

10. The road lighting fixture with safety protection according to claim 8, characterized in that, The uniform light head (61) also includes a first reflector (614) and a second reflector (615). The first reflector (614) and the second reflector (615) are both disposed in the inclined section (612). The first reflector (614) is disposed on the side opposite to the bottom opening of the inclined section (612), and the second reflector (615) is disposed opposite to the first reflector (614).

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