Buried solar LED luminous spike

Abstract

A buried solar Led luminous spike is characterized in that an Led central light source group is arranged below the central part of a raised part in the middle of a transparent optical plastic shell, spliced photovoltaic power generation sheets are arranged on front and rear areas or peripheral areas of the Led central light source group, and Led light distribution light source groups are symmetrically distributed on the peripheral edges or / and corners of the photovoltaic power generation sheets at intervals; the middle Led far light source set is matched with the corner Led near light source set, all electronic components are electrically connected and packaged in the transparent optical plastic shell through a packaging adhesive curing forming body, and air layers are arranged above the photovoltaic power generation piece and between the Led center light source set and the inner top face of the transparent optical plastic shell respectively. The photovoltaic power generation settable area is larger, electronic components are not prone to being damaged due to deformation of the shell, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of light-emitting devices for road traffic safety, specifically to an underground solar-powered LED road stud. Technical Background

[0002] In-ground solar-powered luminous road studs, sometimes called solar-powered raised pavement markers or solar ground lights, are installed with their main body below the ground reference surface buried in the road surface, while the top surface above the ground reference surface is exposed and flush with or slightly higher than the road surface. They have the function of storing solar energy during the day and using solar energy to power the luminous device at night. They can provide visual guidance or prompts for drivers and pedestrians, and can also serve as auxiliary road lighting equipment.

[0003] Existing underground solar-powered lighting road studs have photovoltaic panels located in the center or below the middle section of the transparent plastic shell top shell, while the LED central light source, as the main light source, is located inside or below the light-emitting groove on the front and rear sides or / and the left and right sides of the photovoltaic panels. This design has the following main drawbacks:

[0004] 1. Since the front and rear light-emitting slots are generally set in pairs, they occupy a large area on the top, resulting in a small area for photovoltaic power generation cells and weak photovoltaic power generation capacity, which affects the light-emitting duration and brightness of the road stud after a single full charge.

[0005] 2. When road studs are used, they are run over by vehicles, and the central part of their transparent plastic shell deforms the most, which makes the photovoltaic panels installed in this area easily damaged by the shell deformation.

[0006] 3. With social progress and the development of transportation, there is an increasing number of roads where motor vehicles and non-motor vehicles, as well as pedestrians and vehicles, are mixed. This requires that embedded solar-powered luminous road studs not only provide good illumination for motor vehicle drivers, but also for non-motor vehicle drivers and pedestrians. Furthermore, they should be able to transmit different road information based on the different speeds and observation angles of motor vehicle drivers, non-motor vehicle drivers, and pedestrians.

[0007] Furthermore, previously buried solar-powered road studs were mainly used on ordinary roads, limiting their application scenarios. However, roads are now increasingly subdivided according to their functions, such as urban roads, tourist roads, and slow-moving roads, which often require more lighting modes to meet the demands of functional diversification.

[0008] Existing buried solar-powered illuminated road studs have limited functions and target users. They are not effective at illuminating non-motorized vehicle drivers and pedestrians, and they lack the ability to convey different road information to motorized vehicle drivers, non-motorized vehicle drivers, and pedestrians. They also have a low level of intelligence and are unable to meet the new demands of the times, especially in complex traffic areas such as intersections.

[0009] In summary, it is imperative to address the existing problems of small installable area for photovoltaic panels and susceptibility to damage due to shell deformation in existing buried solar-powered road studs, while ensuring luminous efficacy. This requires guaranteeing the luminous effect of buried solar-powered road studs, ensuring uninterrupted viewing angles (elevation angles) and eliminating blind spots for pedestrians, thus adapting to the increasing trend of mixed pedestrian and vehicular traffic. Furthermore, it is essential to facilitate intelligent driving, intelligent control, and multi-functional luminous illumination. Utility Model Content

[0010] In view of the shortcomings of existing underground solar-powered LED road studs, this utility model proposes an underground solar-powered LED road stud.

[0011] Under the condition of meeting national standards and industry specifications, this utility model combines material forming process, luminescence and optics, and comprehensively considers and makes full use of the limited size resources of solar road studs, so that the photovoltaic power generation cell can achieve the largest area ratio under the same shell size, so as to fully guarantee the power required for its luminescence performance. Through optical matching by combining the luminescence optical structure and the assembly structure, it breaks through the conventional design of existing solar road studs.

[0012] This invention features an LED central light source assembly positioned below the central or intermediate section of a transparent plastic shell top cover. Above this assembly is a matching single central light-emitting slot. The LED in the central light source assembly is matched with the incident surface, emitting surface, and the angle and thickness of the sidewall of the central light-emitting slot. Light is focused and emitted from the emitting surface through the transparent plastic shell at a predetermined elevation angle and emission range angle in a front-to-back direction. Modular photovoltaic panels are positioned on the front and rear sides or periphery of the LED central light source assembly, and a housing is provided around the photovoltaic panels. Multiple LED light source groups are arranged at intervals around the edges and / or corners of the LED enclosure to enhance brightness and maximize the visible light-emitting area. By matching the location, angle, brightness, and color of the central LED light source group and the LED light source groups, the overall light-emitting effect is improved. The LED light source groups allow for a larger light-emitting area for near-field observation, benefiting non-motorized vehicle drivers and pedestrians, while the central LED light source group allows for a longer viewing distance for long-range illumination, benefiting motorized vehicle drivers.

[0013] Because LED light sources are more resistant to deformation than photovoltaic panels, this invention replaces the central part of the transparent plastic shell, where the greatest deformation occurs, with a central LED light source assembly. Air layers are left between the photovoltaic panel and the LED central light source assembly and between these layers and the inner top surface of the transparent optical plastic shell. This not only constitutes the optical structure but also provides redundancy for deformation under pressure, making the photovoltaic panel and LED light source assembly of the road stud less susceptible to damage from shell deformation. This provides pressure protection, meets industry standards, and extends the product's lifespan.

[0014] Because the top area occupied by a single central light-emitting slot is smaller than that of the front and rear light-emitting slots, this invention allows for a larger installation area for the photovoltaic cells, resulting in stronger photovoltaic power generation capacity. This ensures sufficient power and extended battery life to guarantee the required luminous performance.

[0015] This invention allows for the separate control of the LED central light source group and the LED light distribution light source group through control and drive circuits, enabling various light-emitting modes and effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission. It can also be connected to wireless devices to achieve wireless controlled light emission and intelligent network control functions. By switching the light emission mode, different traffic information can be transmitted to motor vehicles, non-motor vehicles, and pedestrians, greatly expanding the application scenarios and application areas of road studs.

[0016] The specific implementation of this utility model is as follows: a buried solar LED light-emitting road stud, comprising a transparent optical plastic shell (1), an inner support body (2), a curing and molding body (3), an LED central light source group (4), a photovoltaic device (6) containing a photovoltaic power generation cell, an energy storage element (7), and a control and drive circuit (8); the transparent optical plastic shell (1) is a symmetrical cavity-shaped shell with a downward-opening accommodating cavity (1q) formed by a transparent top (1d) and a transparent wall (1b) connected to it and extending downward, wherein the outer edge of the transparent top (1d) is the buried reference surface of the road stud.

[0017] The transparent top (1d) has a raised portion at the middle part along the front and rear direction of the corresponding road spike, which is higher than its underground reference surface. The raised portion and the non-raised portions near its front and rear ends form a high-low transition junction through the light-emitting surface (1m).

[0018] The inner top wall of the central part of the raised portion is provided with a concave and arched central light-emitting slot (4c) adapted to the LED central light source group (4). The inner sidewalls of the central light-emitting slot (4c) with downward opening are provided with light-incident surfaces (1r). Multiple LEDs forming an LED central light source group (4) serving as a far-beam light source group are symmetrically arranged inside or below the central light-emitting slot (4c). The front and rear or outer areas of the LED central light source group (4) are provided with modular photovoltaic cells. LED light distribution light source groups (5) are symmetrically arranged at intervals on the edges and / or corners of the photovoltaic cells. The LED central light source group (4), LED light distribution light source group (5), photovoltaic device (6), energy storage element (7), and control and drive circuit (8) are connected by circuit. The photovoltaic cells are connected by circuit in series and / or parallel.

[0019] The inner support body (2) is a support layer adapted to the inner cavity structure of the transparent optical plastic shell (1) and combined in the accommodating cavity (1q). The inner support body (2) is provided with a curing body (3) for encapsulating glue below it. The inner support body (2), LED central light source group (4), photovoltaic device (6), energy storage element (7), and control and drive circuit (8) are encapsulated in the transparent optical plastic shell (1). The energy storage element (7) and control and drive circuit (8) are respectively located in the inner support body (2) or below the inner support body (2). The buried solar LED light-emitting stud with a waterproof encapsulation structure is formed above the photovoltaic power generation cell and between the LED central light source group (4) and the inner top surface of the transparent optical plastic shell (1) with an air layer.

[0020] The assembly elevation angle (β4) of the LED central light source group (4) satisfies: 0°≤β4≤45°. (When the assembly elevation angle of the LED central light source group (4) is set at around 0°, it is called horizontal assembly. When the assembly elevation angle of the LED central light source group (4) is set significantly greater than 0°, it is called oblique elevation assembly.) The LED of the LED central light source group (4) matches the incident surface (1r), the light exit surface (1m) of the center light exit groove (4c) of the transparent optical shell (1) with the angle (such as tilt angle) and thickness of the side wall thereon. This forms a light-emitting optical structure in which the central principal optical axis elevation angle (θ4) of the emitted light (L4) that is incident from the incident surface (1r) and then emitted in the front-back direction through the light exit surface (1m) satisfies: 0°≤θ4<45° and its emission range angle (α4) satisfies: θ4≤α4 / 2.

[0021] The LED light distribution light source group (5) emits light through the optical structure at the corresponding part of the transparent optical plastic shell (1), and forms an LED light distribution optical structure with the LED central light source group (4) that includes, but is not limited to, matching the luminous brightness, matching the luminous angle, and matching the luminous color.

[0022] Preferably, an LED central light source group (4) is provided inside or below the central light-emitting slot (4c), consisting of two rows of LEDs arranged in opposite directions and arrayed in the left-right direction. Rectangular photovoltaic cells are provided on the front and rear sides of the LED central light source group (4), and LED light distribution light source groups (5) are provided on the front and rear outer sides and / or the left and right outer sides of the photovoltaic cells.

[0023] Alternatively, a set of two opposing LED central light source groups (4) may be provided inside or below the central light source slot (4c). Rectangular photovoltaic cells may be provided on the front, back, left, and right sides of the LED central light source group (4). LED light distribution light source groups (5) may be provided on the front and back outer sides and / or the left and right outer sides of the photovoltaic cells.

[0024] Alternatively, two sets of LED central light source groups (4) arranged opposite each other are provided inside or below the central light source slot (4c). The LED central light source groups (4) are surrounded by photovoltaic cells arranged in a polygonal block pattern. LED light distribution light source groups (5) are provided on the front and rear outer sides and / or the left and right outer sides of the photovoltaic cells.

[0025] Alternatively, two sets of LED central light source groups (4) are provided in or below the central light source group (4c) and are arranged in opposite directions. The LED central light source group (4) is surrounded by photovoltaic power generation cells arranged in a radial block pattern. An LED light distribution light source group (5) is provided between adjacent photovoltaic power generation cells.

[0026] Preferably, the LED in the LED central light source group (4) is an LED with a built-in focusing structure, or the LED in the LED central light source group (4) is an F5 (φ=5mm) to F10 (φ=10mm) LED bead with a Lamp package and a transparent focusing head and pins.

[0027] Alternatively, the LED in the central LED light source group (4) can be an LED with a full-angle emission range between 20° and 60°.

[0028] Alternatively, the inner support body (2) can be a pin (wire) connector bracket (2c), and the LED center light source group (4) can be fixed (welded) to the circuit board through the pin (wire) connector bracket (2c);

[0029] The LED light source group (5) is a surface-mount LED or a lamp-packaged LED.

[0030] Alternatively, the LED light source group (5) may be located on the inner support body (2) or above the inner support body (2).

[0031] Alternatively, the LED light source group (5) may be located inside or below the transparent inner support body (2).

[0032] Alternatively, the LED light source group (5) may be disposed on the circuit board layer that serves as the inner support body (2), or the LED light source group (5) may be disposed on the photovoltaic panel layer that serves as the inner support body (2).

[0033] Preferably, the ratio of the light intensity (I4) of the LED in the LED central light source group (4) to the light intensity (I5) of the LED in the LED light distribution light source group (5) is greater than 2:1, and the LED central light source group (4) and the LED light distribution light source group (5) form an LED light distribution optical structure that matches different light intensities.

[0034] Alternatively, the LED light distribution light source group (5) can be matched with the optical structure of its corresponding part in the transparent optical shell (1) to form a light-emitting optical structure in which the elevation angle of the central principal optical axis after emission from the transparent optical shell (1) satisfies: 45°<θ5≤90°. The LED central light source group (4) and the LED light distribution light source group (5) can respectively act as the high beam light source group and the low beam light source group to form an LED light distribution optical structure that matches different principal emission angles.

[0035] Alternatively, the emission range angle 2 (α5) of the emitted light (L5) after exiting the transparent optical shell (1) of the LED light distribution light source group (5) is greater than or equal to the emission range angle 1 (α4) of the emitted light (L4) of the LED central light source group (4) after exiting the light-emitting surface (1m) in the front-back direction, or the emission range angle 1 (α4) of the emitted light (L4) of the LED central light source group (4) after entering the light-emitting surface (1r) and exiting the light-emitting surface (1m) in the front-back direction satisfies: α4≤60°, and the emission range angle 2 (α5) of the emitted light (L5) after exiting the transparent optical shell (1) of the LED light distribution light source group (5) satisfies: α5≥120°, and the light distribution of the LED central light source group (4) and the LED light distribution light source group (5) forms an LED light distribution optical structure with no light emission dead angle in the front-back direction (180°).

[0036] Alternatively, the LED light source group (5) may contain LEDs with different emission colors.

[0037] Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may each contain LEDs with different emission colors (preferably white, green, blue, and red), and the LED central light source group (4) and the LED light distribution light source group (5) may form an LED light distribution optical structure that matches the different emission colors.

[0038] Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) are controlled and driven by the control and driving circuit (8) to emit light with different periods T or duty cycles D respectively, and the LED central light source group (4) and the LED light distribution light source group (5) form an LED light distribution optical structure that matches different light emission modes.

[0039] Preferably, the assembly elevation angle (β4) of the LED central light source group (4) is around 0° (horizontal projection), and the upper horizontal thickness W1 of the sidewall where the light-emitting surface (1m) is located is greater than or equal to its lower horizontal thickness W2.

[0040] Alternatively, the mounting elevation angle (β4) of the LED central light source group (4) is greater than 0° (oblique elevation), and the upper oblique elevation thickness W3 of the side wall where the light-emitting surface (1m) is located along the mounting elevation angle (β4) is less than or equal to its lower oblique elevation thickness W4.

[0041] Alternatively, the mounting elevation angle of the LED central axis of the LED light source group (5) is approximately 90° vertically upward (upward projection).

[0042] Alternatively, the light-emitting surface (1m) may be an inclined surface, or the light-incident surface (1r) may be an inclined surface.

[0043] Alternatively, the outer top surface (1a1) of the raised portion may be a plane or a slightly arched curved surface, or the inner top surface (1b1) of the raised portion may be a plane or a slightly arched curved surface.

[0044] Alternatively, the outer top surface (1a2) of the unprotruding portion on both sides of the protruding part can be a plane, or the inner top surface (1b2) of the unprotruding portion on both sides of the protruding part can be a plane.

[0045] Alternatively, the left and right ends of the raised portion transition from the inside out and from high to low through curved or inclined surfaces to the outer edge of the transparent top (1d).

[0046] Preferably, the assembly elevation angle (β4) of the LED central light source group (4) satisfies: 0°≤β4≤20°. The LED of the LED central light source group (4) matches the angle and thickness of the incident surface (1r), the emitting surface (1m) and the sidewall of the central light-emitting slot (4c) of the transparent optical shell (1), forming a light-emitting optical structure in which the central principal optical axis elevation angle (θ4) of the emitted light (L4) incident from the incident surface (1r) and emitted in the front-back direction through the emitting surface (1m) satisfies: 0°≤θ4<15° and its emission range angle (α4) satisfies: 20°≤α4≤45°.

[0047] Alternatively, the aforementioned center light-emitting slot (4c) may be a light-emitting slot with an optical structure including but not limited to light refraction structure, light reflection structure, light-concentrating structure, light angle deflection structure, and light beam upward shift structure, which is adapted to the LED center light source group (4) and facilitates the assembly of the LED center light source group (4) at the required angle. Or, the light-incident surface (1r) and / or the light-emitting surface (1m) of the aforementioned center light-emitting slot (4c) may be equipped with a spherical light-concentrating lens.

[0048] Alternatively, the aforementioned center light-emitting slot (4c) is a light-emitting slot with a vertical cross-section (generally a longitudinal cross-section, i.e., a cross-section along the front and rear direction of the corresponding rail spike) resembling an isosceles trapezoid, and the aforementioned light-incident surfaces (1r) correspond to the two sides of the isosceles trapezoid.

[0049] Furthermore, the central light-emitting groove (4c) is provided with a downwardly protruding strip-shaped rib (4j) to strengthen the structure.

[0050] Furthermore, the inner top surface of the central light-emitting slot (4c) is provided with a hanging partition (4g), which divides the central light-emitting slot (4c) into two or more separate light-emitting slots.

[0051] Furthermore, the photovoltaic cell is provided with a front and rear edge LED light distribution light source group (5-1) on its front and rear outer sides, and a recessed front and rear edge light emission groove (5c-1) adapted to the front and rear edge LED light distribution light source group (5-1) is provided on the inner top wall above it.

[0052] or / and

[0053] The photovoltaic cell is provided with left and right side LED light distribution light source group two (5-2) on the left and right outer sides, and the inner top wall above the left and right side LED light distribution light source group two (5-2) is provided with a recessed left and right side light output groove two (5c-2) that is adapted to it.

[0054] Furthermore, the emission range angle (α5) of the emitted light (L5) from the LEDs of the front and rear edge LED light distribution light source group one (5-1) or / and the left and right edge LED light distribution light source group two (5-2) after being emitted through the transparent optical plastic shell (1), and the emission range angle (α4) of the emitted light (L4) from the LED of the LED center light source group (4) after being incident on the light-incident surface (1r) and then emitted in the front-rear direction through the light-outcident surface (1m), satisfy: α4+α5≥180°. The light distribution of the two forms an LED light distribution optical structure with no light-emitting dead angle in the front-rear direction (180°) of the corresponding road spike.

[0055] Alternatively, the aforementioned front and rear edge light-emitting slot one (5c-1) is a light-emitting slot adapted to the front and rear edge LED light distribution light source group one (5-1), with a light diffusion optical structure (5k) that facilitates the emission of light from the front and rear edge LED light distribution light source group one (5-1) with a large emission range angle. The assembly elevation angle of the LED central axis of the front and rear edge LED light distribution light source group one (5-1) is approximately 90° vertically upward (upward projection). The front and rear edge LED light distribution light source group one (5-1) and the front and rear edge light-emitting slot one (5c-1) are matched to form a near-beam LED light distribution optical structure.

[0056] Alternatively, the second light-emitting slot (5c-2) on the left and right sides can be adapted to the second LED light distribution light source group (5-2) on the left and right sides, and have a light-diffusing optical structure (5k) that facilitates the emission of light from the second LED light distribution light source group (5-2) on the left and right sides with a large emission range angle. The assembly elevation angle of the LED central axis of the second LED light distribution light source group (5-2) on the left and right sides is about 90° vertically upward (upward). The second LED light distribution light source group (5-2) on the left and right sides matches the second light-emitting slot (5c-2) on the left and right sides to form a near-beam LED light distribution optical structure.

[0057] Preferably, the front and rear edge light-emitting slot one (5c-1) and / or the left and right edge light-emitting slot two (5c-2) are edge block-shaped or edge segment light-emitting slots in the shape of an arc, an arc block, or a chord segment.

[0058] Preferably, the first light-emitting slot (5c-1) at the front and rear edges and / or the second light-emitting slot (5c-2) at the left and right edges are light-emitting slots with a trapezoidal or inverted U-shaped vertical cross-section.

[0059] Furthermore, a second partition (5g) is provided on the inner top surface of the front and rear side light-emitting slot 1 (5c-1), which divides the front and rear side light-emitting slot 1 (5c-1) into two or more light-emitting slots, or / and a second partition (5g) is provided on the inner top surface of the left and right side light-emitting slot 2 (5c-2), which divides the left and right side light-emitting slot 2 (5c-2) into two or more light-emitting slots.

[0060] Preferably, the light diffusion optical structure (5k) is a light diffusion grid, which is a downwardly convex V-shaped, U-shaped, or inverted trapezoidal rib array, or the light diffusion grid is an upwardly concave groove array.

[0061] Preferably, the outer edge of the transparent top (1d) of the transparent optical plastic shell (1) is circular.

[0062] Alternatively, the portion of the transparent enclosure (1b) and the transparent top (1d) of the aforementioned transparent optical plastic shell (1) adjacent to each other may be a circular structure.

[0063] Alternatively, the transparent enclosure (1b) of the transparent optical shell (1) may have a circular inner edge structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a circle-like inner edge structure formed by a plurality of chord-cut edges near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a circle-like inner edge structure formed by a vertically convex structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a polygonal inner edge structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a polygon-like inner edge structure formed by a vertically convex structure near its upper edge.

[0064] The transparent enclosure (1b) of the transparent optical plastic shell (1) has a circular outer edge structure near its lower edge, or a circle formed by multiple chords cutting its lower edge, or a circle formed by a vertical inward convex structure forming its lower edge, or a circle formed by a vertical outward convex structure forming its lower edge, or a circle formed by a vertical outward convex structure forming its lower edge, or a polygonal outer edge structure near its lower edge, or a polygon formed by a vertical outward convex structure forming its lower edge.

[0065] Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circle formed by multiple chord tangents forming a near-circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circle formed by a vertically convex structure forming a near-circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a polygonal inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a polygon formed by a vertically convex structure forming a near-polygonal inner edge structure.

[0066] Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) may be recessed to form a vertical support structure (1s-1), or the inner wall of the transparent enclosure (1b) of the transparent optical plastic shell (1) may be provided with a convex vertical support body (1z-1).

[0067] Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) may protrude outward to form a second vertical support structure (1s-2), or the outer side wall of the transparent enclosure (1b) of the transparent optical plastic shell (1) may be provided with a second vertical support body (1z-2) that protrudes outward.

[0068] Alternatively, the inner wall of the transparent enclosure (1b) of the transparent optical shell (1) is further provided with a positioning structure (1w) for assembling the inner support body (2), and the inner support body (2) is fitted and fixed in the receiving cavity (1q) of the transparent optical shell (1) through the positioning structure (1w).

[0069] Alternatively, the top edge of the transparent optical plastic shell (1) may be provided with symmetrically arranged protruding supports (1c), or the four corners of the top edge of the transparent optical plastic shell (1) may be provided with protruding supports (1c).

[0070] Alternatively, the top surface and / or edge portion of the transparent optical plastic shell (1) may also be provided with a light guiding structure (1g).

[0071] Alternatively, the top edge of the transparent optical plastic shell (1) may have a striped light guide structure (1g).

[0072] Alternatively, the top surface and / or edge portion of the transparent optical plastic shell (1) may also be provided with an anti-slip structure (1p).

[0073] Furthermore, the inner support body (2) is either an inner support layer that is a circuit board layer or an inner support layer that is a photovoltaic panel.

[0074] Furthermore, the encapsulating adhesive cured molded body (3) is a single-layer cured encapsulating adhesive cured molded body, or a layered cured encapsulating adhesive cured molded body.

[0075] Alternatively, the encapsulating adhesive cured molded body (3) may be a single-curing encapsulating adhesive cured molded body or a multi-curing encapsulating adhesive cured molded body.

[0076] Alternatively, the encapsulating adhesive cured molding body (3) is a double-layer composite encapsulating adhesive cured molding body containing a soft adhesive layer and a hard adhesive layer. The encapsulating adhesive cured molding body (3) near the inner support body (2) is a soft adhesive layer (preferably a polyurethane layer or a silicone layer), and the encapsulating adhesive cured molding body (3) near the bottom of the transparent optical plastic shell (1) is a hard adhesive layer (preferably an epoxy adhesive layer). The soft adhesive layer has a buffering effect and can withstand a certain deformation, so that the photovoltaic power generation cell and circuit board of the road stud are not easily damaged by the shell deformation caused by vehicle rolling or impact, and the product has a longer service life.

[0077] Furthermore, the bottom of the transparent optical plastic shell (1) is combined with a composite bottom shell (9) with potting holes (9k) through a composite structure to form a composite shell.

[0078] The encapsulation adhesive cured molding body (3) encapsulates the inner support body (2), LED central light source group (4), photovoltaic device (6), energy storage element (7), control and drive circuit (8) in the composite shell to form a waterproof and pressure-resistant encapsulation structure.

[0079] Furthermore, the bottom of the transparent enclosure (1b) of the transparent optical plastic shell (1) is provided with a composite structure one (1h) for bonding with the composite bottom shell (9). The composite structure one (1h) is a hot-melt composite structure, a solvent composite structure, or an adhesive composite structure, or two or three of them. The composite bottom shell (9) is provided with a composite structure two (9h) corresponding to the composite structure one (1h) for bonding with the transparent optical plastic shell (1). The composite structure two (9h) is a hot-melt composite structure, a solvent composite structure, or an adhesive composite structure, or two or three of them. The composite bottom shell (9) is bonded to the bottom of the transparent enclosure (1b) of the transparent optical plastic shell (1) by the composite structure one (1h) and the composite structure two (9h) to form a composite shell.

[0080] Alternatively, the composite base shell (9) may be a transparent plastic injection-molded base shell with the same or similar material as the transparent optical plastic shell (1), or a non-transparent plastic injection-molded base shell with the same or similar material as the transparent optical plastic shell (1).

[0081] Alternatively, the bottom of the composite bottom shell (9) may have a concave or convex convex structure (9j).

[0082] Furthermore, a fastening structure (10) including but not limited to fastening screws or bolts is provided. The transparent enclosure (1b) of the transparent optical plastic shell (1) and / or the vertical support body one (1z-1) or vertical support body two (1z-2) of the transparent optical plastic shell (1) are provided with fixing holes (1k) adapted to the fastening structure (10).

[0083] Alternatively, the composite base shell (9) may have a fixing hole two (9k2) adapted to the fastening structure (10), and the transparent optical plastic shell (1) and the composite base shell (9) may be further assembled and fixed by the fastening structure (10). Alternatively, a hot-melt composite structure may be provided around the fixing hole one (1k) and / or the fixing hole two (9k2), and the transparent optical plastic shell (1) and the composite base shell (9) may be composited by the hot-melt composite structure and assembled and fixed by the fastening structure (10).

[0084] Alternatively, a waterproof sealing structure may be provided in the first fixing hole (1k) or / and the second fixing hole (9k2), or a structural adhesive reinforcement structure may be provided in the first fixing hole (1k) or / and the second fixing hole (9k2).

[0085] Furthermore, the outer wall and / or bottom and / or top edge of the transparent optical plastic shell (1) are also combined with a protective shell (11), wherein the protective shell (11) is a soft protective shell with a cushioning function, or the protective shell (11) is a hard protective shell with a structural reinforcement function.

[0086] Alternatively, the protective outer shell (11) may be a protective bottom shell (11-2) consisting of side walls and a bottom, with an upward-opening cavity. The transparent optical plastic shell (1) may also be provided with fixing screw holes (1s) that are compatible with the fastening structure (10). The transparent optical plastic shell (1) and the protective bottom shell (11-2) are combined by the fastening structure (10) to form a buried solar light-emitting road stud.

[0087] Alternatively, the protective shell (11) is a combined shell formed by assembling an annular cover (11-1) and a protective bottom shell (11-2) through a fastening structure (10). The transparent optical plastic shell (1) is assembled inside the combined protective shell (11) to form the top of the transparent optical plastic shell (1) with the buried solar light-emitting road stud exposed at the top of the shell.

[0088] Furthermore, a protective coating layer (12) is provided on the outer wall of the transparent enclosure (1b) of the transparent optical plastic shell (1), or a protective coating layer (12) is provided on the outer wall and the bottom surface of the transparent enclosure (1b) of the transparent optical plastic shell (1). The protective coating layer (12) may be an anti-reflective coating layer with scattering and reflection function, or a sand-finish coating layer with a rough surface, or a color-developing coating layer with a specific color, etc.

[0089] Preferably, the bottom diameter R of the transparent optical plastic shell (1) is between 100mm and 150mm.

[0090] Alternatively, the height H1 of the transparent top (1d) of the transparent optical plastic shell (1) is between 5mm and 10mm.

[0091] Alternatively, the height H2 of the transparent enclosure (1b) of the transparent optical plastic shell (1) is between 30mm and 55mm.

[0092] Alternatively, the thickness H3 of the transparent enclosure (1b) of the transparent optical plastic shell (1) is between 5 mm and 15 mm.

[0093] Alternatively, the vertical distance ΔH4 between the photovoltaic power generation cell and the inner top surface of the transparent optical plastic shell (1) above it is between 1mm and 5mm, or the vertical distance ΔH5 between the LED central light source group (4) and the inner top surface of the transparent optical plastic shell (1) above it is between 1mm and 5mm, or the depth H6 of the central light output groove (4c) is between 5mm and 10mm. Since the photovoltaic power generation cell and the inner top surface of the transparent optical plastic shell (1) above it and the inner top surface of the LED central light source group (4) and the inner top surface of the transparent optical plastic shell (1) above it are respectively left with air layers of thickness ΔH4 and ΔH5, the photovoltaic power generation cell and the LED central light source group of the road stud are not easily damaged by the shell deformation caused by vehicle rolling or impact, and the product has a longer service life.

[0094] Furthermore, the control and drive circuit (8) is a control and drive circuit that controls and drives the LED central light source group (4) and the LED light distribution light source group (5) to emit light in different light emission modes.

[0095] Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may be dual-group dual-color or multi-group multi-color LEDs.

[0096] Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may be dual-group dual-control or multi-group multi-control LEDs.

[0097] Alternatively, the control and drive circuit (8) may be a control and drive circuit that controls and drives the LED central light source group (4) to emit light constantly or at a certain period T and duty cycle D, and controls and drives the LED light distribution light source group (5) to emit light at a certain period T and duty cycle D, or to emit light alternately in two or more groups, or to emit light in a certain time sequence.

[0098] Alternatively, the control and drive circuit (8) is a microcontroller control circuit, and the buried solar LED luminous road stud is a controlled luminous buried solar luminous road stud in which the LED central light source group (4) and the LED light distribution light source group (5) are controlled by the microcontroller to emit light according to the luminous mode corresponding to the microcontroller's preset program.

[0099] Alternatively, the control and drive circuit (8) may also be connected to a wireless device, and the buried solar LED light-emitting road stud may be a wireless controlled light-emitting buried solar LED light-emitting road stud with wireless receiving or wireless transmitting and receiving functions. Attached Figure Description

[0100] Figure 1 This is a cross-sectional structural principle diagram of the present invention, as well as a schematic diagram of its light-emitting optical structure and optical path principle.

[0101] Figure 2This is a cross-sectional structural diagram of the transparent optical housing of this utility model, and a structural matching diagram of the LED central light source group and the LED light distribution light source group.

[0102] Figure 3 This is a structural schematic diagram of the cross-sectional view along line A1-A1 of Embodiment 1 of the present invention, as well as a schematic diagram of its light-emitting optical structure and optical path.

[0103] Figure 4 This is a top view of the track spike structure according to Embodiment 1 of this utility model.

[0104] Figure 5 This is a three-dimensional structural diagram of the transparent optical plastic shell after it has been flipped according to Embodiment 1 of this utility model.

[0105] Figure 6 This is a schematic diagram of the A2-A2 cross-sectional structure of the transparent optical plastic shell according to Embodiment 1 of this utility model.

[0106] Figure 7 This is a bottom view schematic diagram of the track spike structure according to Embodiment 1 of this utility model.

[0107] Figure 8 This is a schematic diagram of the explosive assembly structure of the rail spike according to Embodiment 1 of this utility model.

[0108] Figure 9 This is a structural schematic diagram of the cross-sectional view along line B1-B1 of Embodiment 2 of the present invention, as well as a schematic diagram of its light-emitting optical structure and optical path.

[0109] Figure 10 This is a top view of the track spike structure according to Embodiment 2 of this utility model.

[0110] Figure 11 This is a three-dimensional structural diagram of the transparent optical plastic shell after it has been flipped, according to Embodiment 2 of this utility model.

[0111] Figure 12 This is a bottom view schematic diagram of the track spike structure according to Embodiment 2 of this utility model.

[0112] Figure 13 This is a schematic diagram of the explosive assembly structure of the rail spike according to Embodiment 2 of this utility model.

[0113] Figure 14 This is a structural schematic diagram of the C1-C1 cross-sectional view of Embodiment 3 of this utility model, as well as a schematic diagram of its light-emitting optical structure and optical path.

[0114] Figure 15 This is a top view of the track spike structure according to Embodiment 3 of this utility model.

[0115] Figure 16This is a three-dimensional structural diagram of the transparent optical plastic shell after it has been flipped, according to Embodiment 3 of this utility model.

[0116] Figure 17 This is a schematic diagram of the explosive assembly structure of the rail spike according to Embodiment 3 of this utility model.

[0117] Figure 18 This is a structural schematic diagram of the D1-D1 cross-sectional view of Embodiment 4 of this utility model, as well as a schematic diagram of its light-emitting optical structure and optical path.

[0118] Figure 19 This is a top view of the track spike structure according to Embodiment 4 of this utility model.

[0119] Figure 20 This is a three-dimensional structural diagram of the transparent optical plastic shell after it has been flipped, according to Embodiment 4 of this utility model.

[0120] Figure 21 This is a bottom view schematic diagram of the track spike structure in Embodiment 4 of this utility model.

[0121] Figure 22 This is a schematic diagram of the explosive assembly structure of the road spike in Embodiment 4 of this utility model.

[0122] Figure 23 This is a structural schematic diagram of the E1-E1 cross-sectional view of Embodiment 5 of this utility model, as well as a schematic diagram of its light-emitting optical structure and optical path.

[0123] Figure 24 This is a top view of the track spike structure according to Embodiment 5 of this utility model.

[0124] Figure 25 This is a three-dimensional structural diagram of the transparent optical plastic shell after it has been flipped in Embodiment 5 of this utility model.

[0125] Figure 26 This is a schematic diagram of the E2-E2 cross-sectional structure of the transparent optical plastic shell of Embodiment 5 of this utility model.

[0126] Figure 27 This is a schematic diagram of the explosive assembly structure of the rail spike in Embodiment 5 of this utility model.

[0127] Figure 28 This is a schematic diagram of the explosive assembly structure of the road spike in Embodiment 5 of this utility model. Detailed Implementation

[0128] Embodiments of this utility model are described in conjunction with the accompanying drawings.

[0129] Example 1

[0130] A buried solar-powered luminescent plastic-shell road stud includes a transparent optical plastic shell (110), an inner support body (120), a curing encapsulant body (130), an LED central light source group (140), an LED light distribution light source group (150), a photovoltaic power generation cell (160), an energy storage element (170), a control and drive circuit (180), a composite base shell (190), and a coating protective layer (1120). Figure 3-8 As shown.

[0131] The transparent optical plastic shell (110) is a symmetrical PC injection-molded cavity-shaped shell with a downward-opening accommodating cavity (110q), formed by a transparent top (110d) and a transparent surrounding wall (110b) integral with it and extending downward.

[0132] The transparent top (110d) has a circular outer contour (viewed from above). Four protruding supports (110c) are provided at the edge of the transparent top (110d) to prevent sinking during road surface installation. The top surface of the transparent top (110d) has anti-slip protrusions (110p).

[0133] The transparent top (110d) of the transparent optical shell (110) has concave center light-emitting slots (140c) on its inner top wall, which are adapted to the LED center light source group (140) and correspond to the front and rear directions of light emission. The center light-emitting slots (140c) are light-emitting slots with a vertical cross-section similar to an isosceles trapezoid with an upward arch. The front and rear light-incident surfaces (110r) of the light-emitting slots are inclined surfaces, corresponding to the two sides of the isosceles trapezoid. (110r) and its corresponding front and rear light-emitting surfaces (110m) and the angle and thickness of their sidewalls are matched to form a light refraction structure, light angle deflection structure, and light upward shift structure that facilitate the light emission of the LED central light source group (140) at the required assembly angle. The central light-emitting groove (140c) is provided with downwardly protruding and longitudinally arranged strip-shaped ribs (140j), which can play a structural reinforcement role. The corresponding area on the inner support body (120) below the central light-emitting groove (140c) is... The LED central light source group (140) consists of a lamp board with two rows of 6×2 Lamp-encapsulated straw hat-shaped F5-F8 LED beads with focusing lenses, arranged parallel to each other in the left-right direction and tilted forward and backward respectively, with the central axis mounting elevation angle (β4) between 5° and 15°. The main beam of the LED central light source group (140) is matched with the optical structure on the central light outlet slot (140c) and then passes through it. The light-emitting surface (110m) has a central principal optical axis elevation angle (θ4) between 0.5° and 20° and an emission range angle (α4) between 20° and 45°, forming a light-emitting structure that concentrates and emits light. Rectangular photovoltaic cells (160) are respectively provided on the front and rear sides of the LED central light source group (140). The transparent top (110d) of the transparent optical shell (110) has curved edges on both sides that transition from the inside out and from high to low to its outer edge.

[0134] The inner top wall above the edge between the front end of the central light-emitting groove (140c) and the transparent enclosure (110b) in front of it is also provided with a concave front and rear side light-emitting groove (150c) adapted to the LED light-distributing light source group (150) that serves as the front and rear side light-distributing light source. The inner top wall above the edge between the left and right ends of the central light-emitting groove (140c) and the transparent enclosure (110b) on the left and right sides of it is also provided with a concave left and right side light-emitting groove (150c) adapted to the LED light-distributing light source group (150) that serves as the left and right side light-distributing light source.

[0135] The front, rear, left, and right side light-emitting slots (150c) are strip-shaped light-emitting slots with an inverted U-shaped vertical cross-section. The light-emitting surfaces of the front, rear, left, and right side light-emitting slots (150c) can be equipped with light-diffusing grids (150k) that facilitate the LED light distribution light source group (150) to emit light with a large emission range angle. The inner support body (120) below it has 16 SMD packaged 2835 surface mount LEDs fixed to the lamp plate at the corresponding convex and concave lamp slots in the corresponding areas by means of slots and adhesive. These 16 LEDs are used as the front and rear side LED light distribution light source groups (150) (4 each at the front and rear) and the left and right side LED light distribution light source groups (150) (4 each at the left and right), respectively forming front and rear light distribution and left and right light distribution with the LED center light source group (140).

[0136] The outer contour of the transparent enclosure (110b), viewed from below, resembles a circle (petal-shaped) with a partially convex outer perimeter due to the outward convex vertical support body two (110z-2). The inner contour, viewed from below, resembles an octagon. The bottom inner perimeter of the transparent enclosure (110b) is provided with a recessed ring-shaped fitting structure one (110q). The ring-shaped fitting structure one (110q) is provided with ring-shaped hot-melt ribs (110h) that are adapted to its shape.

[0137] The inner support body (120) is a transparent injection-molded support layer with a pin header bracket (120c) in the center, adapted to the inner cavity structure of the transparent optical plastic shell (110). It is fixed in the accommodating cavity (110q) by a stepped positioning structure (110d) and adhesive. An air layer is formed between the top of the inner support body (120) and the inner top wall of the transparent optical plastic shell (110), so that the vertical distance ΔH4 between the photovoltaic power generation cell (160) and the inner top surface of the transparent optical plastic shell (110) above it is controlled between 2mm and 5mm, and the vertical distance ΔH5 between the LED central light source group (140) and the inner top surface of the transparent optical plastic shell (110) above it is between 1mm and 4mm. This makes the photovoltaic power generation cell (160) and the LED central light source group (140) of the road stud less susceptible to damage from shell deformation caused by vehicle rolling or impact, resulting in a longer product service life.

[0138] The LED central light source group (140), LED light distribution light source group (150), photovoltaic power generation cell (160), energy storage element (170), and control and drive circuit (180) are connected by circuitry. The energy storage element (170) and control and drive circuit (180) are respectively embedded below the inner support body (120), and the above components are then fixed in a transparent optical plastic shell (110) with two-component epoxy resin.

[0139] The composite bottom shell (190) is a bottom-cover type injection-molded bottom shell with a glue-filling hole (190k) and outwardly protruding spoke-shaped ribs (190j) at the bottom (which can make the bottom of the composite shell more firmly bonded to the mounting glue and prevent it from rotating). The edge of the composite bottom shell (190) has an upwardly protruding ring-shaped fitting structure two (190q), which is provided with a welding groove (190h) corresponding to the hot-melt protrusion (110h) at the bottom of the transparent enclosure (110b). The ring-shaped fitting structure two (190q) of the composite bottom shell (190) is fitted into the ring-shaped fitting structure one (110q) so that the composite bottom shell (190) is embedded into the bottom inner perimeter of the transparent enclosure (110b). The composite shell is formed by hot-melt bonding with the transparent optical plastic shell (110) through the hot-melt protrusion (110h) and the welding groove (190h).

[0140] Encapsulating adhesive is then poured into the potting holes (190k), leveled, and cured to form a waterproof encapsulation structure (140). Polyurethane encapsulating adhesive can be poured, leveled, and cured first to form a soft adhesive layer of a certain thickness, followed by epoxy encapsulating adhesive poured, leveled, and cured to form a hard adhesive layer of a certain thickness. The soft adhesive layer provides cushioning and can withstand certain deformations, making the photovoltaic cells (160) and circuit boards of the road stud less susceptible to damage from vehicle crushing or impact, resulting in a longer product lifespan.

[0141] The outer surface and bottom surface of the composite shell may be coated with a protective layer (1120), such as an anti-reflective coating layer with scattering and reflection function, a sandblasted coating layer with a rough surface, or a color-developing coating layer with a specific color, etc.

[0142] Among them, the control and drive circuit (180) can control the light emission modes of the LED central light source group (140) and the LED light distribution light source group (150) respectively, realize various control and light emission effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission color. It can also be connected to wireless devices to realize wireless controlled light emission function and intelligent network control function, forming an intelligent light-emitting road stud. It can transmit different traffic information to motor vehicles, non-motor vehicles and pedestrians through the switching of light emission modes.

[0143] This utility model of an in-ground solar-powered luminous plastic-shell road stud has its part buried in the ground (road surface) below the ground baseline during installation. Its photovoltaic panels have a larger installation area compared to existing similar products, and the photovoltaic panels are less susceptible to damage due to shell deformation. It features both bidirectional LED lighting effects with the central LED light source group focusing light forward and backward at small angles, and wide-angle LED lighting effects with the side LED light distribution light sources group pointing upwards. The side LED light distribution light sources group can compensate for the brightness and angle of the main LED light source, enhancing its brightness. This allows for a larger luminous area for close-range observation, facilitating observation by non-motorized vehicle drivers and pedestrians, and a longer viewing distance for long-range observation, benefiting motorized vehicle drivers. It adapts to the increasing trend of mixed pedestrian and vehicle traffic, and is particularly suitable for installation on roads at intersections, crossroads, and pedestrian crossings. It also facilitates intelligent control and multi-functional lighting, offering higher cost-effectiveness and better application prospects.

[0144] Example 2

[0145] A buried solar-powered luminous plastic-shell road stud includes a transparent optical plastic shell (210), an inner support body (220), a curing encapsulant body (230), an LED central light source group (240), an LED light distribution light source group (250), a photovoltaic power generation cell (260), an energy storage element (270), a control and drive circuit (280), and a composite base shell (290). Figure 9-13 As shown.

[0146] The transparent optical plastic shell (210) is a symmetrical PC injection-molded cavity-shaped shell with a downward-opening accommodating cavity (210q), formed by a transparent top (210d) and a transparent surrounding wall (210b) integral with it and extending downward.

[0147] The transparent top (210d) has a circular outer contour (viewed from top to bottom). Four protruding supports (210c) are provided at the edge of the transparent top (210d) to prevent sinking during road surface installation. The top surface of the transparent top (210d) has anti-slip protrusions (210p).

[0148] The transparent top (210d) of the transparent optical shell (210) has concave center light-emitting slots (240c) on its inner top wall, which are adapted to the LED center light source group (240) and emit light in the front and rear directions respectively. The center light-emitting slots (240c) are light-emitting slots with a vertical cross-section similar to an isosceles trapezoid with an upward arch. The center light-emitting slots (240c) are provided with downwardly convex and longitudinally arranged strip-shaped ribs (240j) to strengthen the structure. The inner support body (220) below the slot (240c) has a corresponding area on which two rows of horizontally arranged, horizontally facing forward and backward (with the central axis mounting angle (β4) around 0°) 6×2 Lamp-encapsulated straw hat-shaped F5-F8 LED beads with focusing lenses are fixed at a certain height via a pin header bracket (220c). This serves as the LED central light source group (240). The front and rear light-incident surfaces (210r) of the light-emitting slot are inclined planes, corresponding to the isosceles trapezoidal shape. The two waists, the front and rear light-incident surfaces (210r) and their corresponding front and rear light-outceasing surfaces (210m) and the angles and thicknesses of their sidewalls, are matched to form a light refraction structure, a light angle deflection structure, and a light beam upward shift structure that facilitate the light emitted from the LED central light source group (240) at the required assembly angle. The overall structure forms the main beam of the LED central light source group (240) which, after matching the optical structure on the central light-outceasing slot (240c), passes through its light-outceasing surface (210m) with its central principal optical axis elevation angle (θ4) between 1° and 15°. The structure emits light by focusing the light at an emission angle (α4) between 25° and 40°. The LED central light source group (240) has arrayed photovoltaic cells (260) on its front and rear sides, and longitudinally arranged rectangular photovoltaic cells (260) on its left and right sides. The transparent top (210d) of the transparent optical shell (210) has curved edges on both sides that transition from the inside out and from high to low to its outer edge.

[0149] The inner top wall above the corner of the photovoltaic cell (260) array is also provided with a concave corner light-emitting groove (250c) that is adapted to the LED light-distributing light source group (250) that serves as the front and rear edge light-distributing light source. The light-emitting surface of the corner light-emitting groove (250c) can be equipped with a light-diffusing grid (250k) that facilitates the LED light-distributing light source group (250) to emit light with a large emission angle. The transparent inner support body (220) below it has 16 upward-emitting SMD packaged 2835 surface mount LEDs fixed to the lamp plate by the slots and adhesives in the corresponding area of ​​the upper and lower convex and concave lamp grooves, which serve as the corner LED light-distributing light source group (250) and form a brightening light distribution with the LED center light source group (240).

[0150] The outer contour of the transparent enclosure (210b), viewed from below, resembles a circle (petal-shaped) with a partially convex outer periphery due to the outward convex vertical support body two (210z-2). The inner contour, viewed from below, resembles an octagon. The bottom inner perimeter of the transparent enclosure (210b) is provided with a recessed ring-shaped fitting structure one (210q). The ring-shaped fitting structure one (210q) is provided with ring-shaped hot-melt ribs (210h) that are adapted to its shape.

[0151] The inner support body (220) is a transparent injection-molded support layer adapted to the inner cavity structure of the transparent optical plastic shell (210), with a pin header bracket (220c) in the central part and convex and concave lamp grooves on the edge. It is fixed in the accommodating cavity (210q) by a stepped positioning structure (210d) and adhesive. An air layer is formed between the top of the inner support body (220) and the inner top wall of the transparent optical plastic shell (210), so that the vertical distance ΔH4 between the photovoltaic power generation cell (260) and the inner top surface of the transparent optical plastic shell (210) above it is controlled between 2mm and 5mm, and the vertical distance ΔH5 between the LED central light source group (240) and the inner top surface of the transparent optical plastic shell (210) above it is between 1mm and 4mm. This makes the photovoltaic power generation cell (260) and the LED central light source group (240) of the road stud less susceptible to damage from shell deformation caused by vehicle rolling or impact, resulting in a longer product service life.

[0152] The LED central light source group (240), LED light distribution light source group (250), photovoltaic power generation cell (260), energy storage element (270), and control and drive circuit (280) are connected by circuitry. The energy storage element (270) and control and drive circuit (280) are respectively embedded below the inner support body (220), and the above components are then fixed in the transparent optical plastic shell (210) with two-component epoxy resin.

[0153] The composite bottom shell (290) is a bottom-cover type injection-molded bottom shell with a glue-filling hole (290k) at the bottom. The edge of the composite bottom shell (290) has an upwardly protruding ring-shaped fitting structure two (290q), which is provided with a welding groove (290h) corresponding to the hot-melt rib (210h) at the bottom of the transparent enclosure (210b). The ring-shaped fitting structure two (290q) of the composite bottom shell (290) is fitted into the ring-shaped fitting structure one (210q) so that the composite bottom shell (290) is embedded into the bottom inner perimeter of the transparent enclosure (210b). The composite shell is formed by hot-melt bonding with the transparent optical plastic shell (210) through the hot-melt rib (210h) and the welding groove (290h).

[0154] Encapsulating adhesive is then poured into the potting holes (290k), leveled, and cured to form a waterproof encapsulation structure (240). Polyurethane encapsulating adhesive can be poured, leveled, and cured first to form a soft adhesive layer of a certain thickness, followed by epoxy encapsulating adhesive poured, leveled, and cured to form a hard adhesive layer of a certain thickness. The soft adhesive layer provides cushioning and can withstand certain deformations, making the photovoltaic cells (260) and circuit boards of the road stud less susceptible to damage from vehicle crushing or impact, resulting in a longer product lifespan.

[0155] The outer surface of the composite shell may be provided with a protective coating, or the outer surface and bottom surface of the composite shell may be provided with a protective coating, such as an anti-reflective coating with scattering and reflection function, a sandblasted coating with a rough surface, or a color-developing coating with a specific color, etc.

[0156] Among them, the control and drive circuit (280) can control the light emission modes of the LED central light source group (240) and the LED light distribution light source group (250) respectively, realize various control and light emission effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission color. It can also be connected to wireless devices to realize wireless controlled light emission function and intelligent network control function, forming an intelligent light-emitting road stud. It can transmit different traffic information to motor vehicles, non-motor vehicles and pedestrians through the switching of light emission modes.

[0157] This utility model of an in-ground solar-powered luminous plastic-shell road stud has its part buried in the ground (road surface) below the ground baseline during installation. Its photovoltaic panels have a larger installation area compared to existing similar products, and the photovoltaic panels are less prone to damage due to shell deformation. It possesses both bidirectional LED luminous effect (small-angle upward and backward focusing light emission from the central LED light source group) and wide-angle LED luminous effect (upward wide-angle emission from the corner LED light distribution light source group). The corner LED light distribution light source group can compensate for the brightness and angle of the main LED light source, enhancing its luminous effect. This allows for a larger luminous area for close-range observation, facilitating observation by non-motorized vehicle drivers and pedestrians, and a longer viewing distance for long-range observation, benefiting motorized vehicle drivers. It adapts to the increasing trend of mixed pedestrian and vehicle traffic, and is particularly suitable for installation on roads at intersections, crossroads, and pedestrian crossings. It also facilitates intelligent control and multi-functional luminescence, offering higher cost-effectiveness and better application prospects.

[0158] Example 3

[0159] A buried solar-powered luminescent metal casing road stud includes a transparent optical plastic shell (310), an inner support body (320), a curing encapsulant body (330), an LED central light source group (340), an LED light distribution light source group (350), a photovoltaic power generation cell (360), an energy storage element (370), a control and drive circuit (380), a composite bottom shell (390), fasteners (3100), an annular cover (3110-1), and a protective bottom shell (3110-2). Figure 14-17 As shown.

[0160] The transparent optical plastic shell (310) is a symmetrical PC injection-molded cavity shell with a downward-opening accommodating cavity (310q) formed by a transparent top (310d) and a transparent surrounding wall (310b) integral with it and extending downward. The top surface of the transparent top (310d) has anti-slip protrusions (310p), and the transparent top (310d) is surrounded by a relatively low pressing part that forms a stepped structure with it.

[0161] The transparent top (310d) of the transparent optical shell (310) has concave central light-emitting grooves (340c) on its inner top wall, which are adapted to the LED central light source group (340) and correspond to the front and rear light emission directions. The central light-emitting groove (340c) is a light-emitting groove with a vertical cross-section similar to an isosceles trapezoid with an upward arch. The front and rear light-incident surfaces (310r) of the light-emitting groove are inclined surfaces, corresponding to the two sides of the isosceles trapezoid. The front and rear light-incident surfaces (310r) are matched with the front and rear light-emitting surfaces (310m) and their corresponding side walls to form a light refraction structure, light angle deflection structure, and light upward shift structure that facilitate the LED central light source group (340) to emit light at the required assembly angle. The central light-emitting groove (340c) is provided with downwardly convex and longitudinally arranged strip-shaped ribs (340j), which can play a structural reinforcement role. On the inner support body (320) below the central light-emitting slot (340c), at a certain height, two rows of horizontally arranged LED central light source groups (340) with 6×2 Lamp-encapsulated straw hat-shaped F5-F8 LED beads with focusing lenses are fixed in parallel along the left and right direction, facing forward and backward respectively, with the central axis assembly elevation angle (β4) around 0°. The overall structure forms a light-emitting structure where the main beam of the LED central light source group (340) matches the optical structure on the central light-emitting slot (340c) and emits light through its light-emitting surface (310m) with the central main optical axis elevation angle (θ4) between 0.5° and 15° and the emission range angle (α4) between 20° and 40°. Rectangular photovoltaic cells (360) are respectively provided on the front and rear sides of the LED central light source group (340).

[0162] The inner top wall above the edge between the front end of the central light-emitting groove (340c) and the transparent enclosure (310b) in front of it is also provided with a concave front and rear side light-emitting groove (350c) adapted to the LED light-distributing light source group (350) that serves as the front and rear side light-distributing light source. The inner top wall above the edge between the left and right ends of the central light-emitting groove (340c) and the transparent enclosure (310b) on the left and right sides of it is also provided with a concave left and right side light-emitting groove (350c) adapted to the LED light-distributing light source group (350) that serves as the left and right side light-distributing light source.

[0163] The front, rear, left, and right side light-emitting slots (350c) are light-emitting slots with an inverted U-shaped vertical cross-section. The light-emitting surfaces of the front, rear, left, and right side light-emitting slots (350c) can be equipped with light-diffusing grids (350k) that facilitate the LED light distribution light source group (350) to emit light with a large emission range angle. The inner support body (320) below it has eight SMD packaged 2835 surface mount LEDs fixed to the lamp plate at the corresponding convex and concave lamp slots in the corresponding areas by means of slots and adhesive, which serve as the LED light distribution light source group (350) (two at the front and two at the rear, and two at the left and right), forming front-rear light distribution and left-right light distribution with the LED center light source group (340), respectively.

[0164] The outer contour of the transparent enclosure (310b), viewed from below, resembles a circle (petal-shaped) with a partially concave outer perimeter due to the concave vertical support structure (310s-1). The bottom periphery of the transparent enclosure (310b) is provided with a recessed ring-shaped fitting structure (310q). The ring-shaped fitting structure (310q) has multiple ring-shaped hot-melt ribs (310h) with matching shapes inside the ring.

[0165] The inner support body (320) is a transparent injection-molded support layer with a pin header bracket (320c) in the center, adapted to the internal cavity structure of the transparent optical plastic shell (310). It is fixed in the accommodating cavity (310q) by a stepped positioning structure (310d) and adhesive. An air layer is formed between the top of the inner support body (320) and the inner top wall of the transparent optical plastic shell (310), so that the vertical distance ΔH4 between the photovoltaic power generation cell (360) and the inner top surface of the transparent optical plastic shell (310) above it is controlled between 2mm and 4mm, and the vertical distance ΔH5 between the LED central light source group (340) and the inner top surface of the transparent optical plastic shell (310) above it is between 1mm and 3mm. This makes the photovoltaic power generation cell (360) and the LED central light source group (340) of the road stud less susceptible to damage from shell deformation caused by vehicle rolling or impact, resulting in a longer product service life.

[0166] The LED central light source group (340), LED light distribution light source group (350), photovoltaic power generation cell (360), energy storage element (370), and control and drive circuit (380) are connected by circuitry. The energy storage element (370) and control and drive circuit (380) are respectively embedded below the inner support body (320), and the above components are then fixed in the transparent optical plastic shell (310) with two-component epoxy resin.

[0167] The composite bottom shell (390) is a bottom-cover type injection-molded bottom shell with a glue-filling hole (390k) at the bottom. The edge of the composite bottom shell (390) has an upwardly protruding ring-shaped fitting structure two (320q). The ring-shaped fitting structure two (320q) has a welding groove (390h) inside the ring that corresponds to the hot-melt rib (310h) at the bottom of the transparent enclosure (310b). The fitting structure two (320q) of the composite bottom shell (320) is fitted into the fitting structure (310q) at the bottom of the transparent enclosure (310b) so that the composite bottom shell (320) surrounds the bottom periphery of the transparent enclosure (310b). The composite shell is formed by hot-melt bonding with the transparent optical plastic shell (310) through the hot-melt rib (310h) and the welding groove (390h).

[0168] Encapsulating adhesive is then poured into the potting holes (390k), leveled, and cured to form a waterproof encapsulation structure (340). Polyurethane encapsulating adhesive can be poured, leveled, and cured first to form a soft adhesive layer of a certain thickness, followed by epoxy encapsulating adhesive poured, leveled, and cured to form a hard adhesive layer of a certain thickness. This forms a waterproof and insulating inner liner structure. The soft adhesive layer acts as a buffer, resisting certain deformations, thus preventing damage to the photovoltaic cells (360) and circuit boards of the road studs from vehicle crushing or impact, resulting in a longer product lifespan.

[0169] The aforementioned waterproof and insulating encapsulated inner liner structure is fitted into the accommodating cavity of the protective bottom shell (3110-2). A portion of the bottom surface of the metal annular cap (3110-1), which has six fixing screw holes corresponding to the fixing screw holes on the inner protruding posts of the protective bottom shell (3110-2), is pressed onto the stepped inner ring of the metal protective bottom shell (3110-2), and another portion is pressed onto the pressing part of the transparent optical plastic shell (310). Fastening screws are screwed into the fixing screw holes to act as fasteners (3100). Silicone glue is then dripped onto the fastening screws and cured to seal them, thus locking the waterproof and insulating encapsulated inner liner structure within the protective shell formed by assembling the annular cap (3110-1) and the protective bottom shell (3110-2).

[0170] Among them, the control and drive circuit (380) can control the light emission modes of the LED central light source group (340) and the LED light distribution light source group (350) respectively, realize various control and light emission effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission color. It can also be connected to wireless devices to realize wireless controlled light emission function and intelligent network control function, forming an intelligent light-emitting road stud. It can transmit different traffic information to motor vehicles, non-motor vehicles and pedestrians through the switching of light emission modes.

[0171] This utility model of an underground solar-powered luminous metal shell road stud is installed with its part below the underground baseline buried in the ground (road surface). Its photovoltaic panels have a larger installation area compared to existing similar products, and the photovoltaic panels are less susceptible to damage due to shell deformation. It features both bidirectional LED lighting effects with the central LED light source group focusing light forward and backward at small angles, and wide-angle LED lighting effects with the side LED light distribution light sources grouping light upwards. The side LED light distribution light sources group can compensate for the brightness and angle of the main LED light source, enhancing its brightness. This allows for a larger luminous area for close-range observation, facilitating observation by non-motorized vehicle drivers and pedestrians, and a longer viewing distance for long-range observation, benefiting motorized vehicle drivers. It adapts to the increasing trend of mixed pedestrian and vehicle traffic, and is particularly suitable for installation on roads at intersections, crossroads, and pedestrian crossings. It also facilitates intelligent control and multi-functional lighting, offering higher cost-effectiveness and better application prospects.

[0172] Example 4

[0173] A buried solar-powered luminescent plastic-shell road stud includes a transparent optical plastic shell (410), an inner support body (420), a curing encapsulant body (430), an LED central light source assembly (440), an LED light distribution light source assembly (450), a photovoltaic power generation cell (460), an energy storage element (470), a control and drive circuit (480), and a composite base shell (490). Figure 18-22 As shown.

[0174] The transparent optical plastic shell (410) is a symmetrical PC injection-molded cavity shell with a downward-opening accommodating cavity (410q), formed by a transparent top (410d) and a transparent surrounding wall (410b) integral with it and extending downward.

[0175] The transparent top (410d) has a circular outer contour (viewed from top to bottom). Four protruding supports (410c) are provided at the edge of the transparent top (410d) to prevent sinking during road surface installation. The top surface of the transparent top (410d) has anti-slip protrusions (410p).

[0176] The transparent top (410d) of the transparent optical shell (410) has concave center light-emitting slots (440c) on its inner top wall, which are adapted to the LED center light source group (440) and correspond to the front and rear directions of light emission. The center light-emitting slots (440c) are light-emitting slots with a vertical cross-section similar to an isosceles trapezoid with an upward arch. The front and rear light-incident surfaces (410r) of the light-emitting slots are inclined surfaces, corresponding to the two sides of the isosceles trapezoid. The front and rear light-incident surfaces (410r) are respectively the front and rear sides of the isosceles trapezoid. The angle and thickness of the light-emitting surface (410m) and its sidewall are matched to form a light refraction structure, a light angle deflection structure, and a light upward shift structure that facilitate the light emission of the LED central light source group (440) at the required assembly angle. The central light-emitting slot (440c) is provided with a hanging strip-shaped separator (440g), similar to a dividing rib, which can serve as a section divider and structural reinforcement. On the corresponding area of ​​the inner support body (420) below the central light-emitting slot (440c), the pin header bracket (420c) is used to connect the pin header bracket (420c) at a certain height. A lamp panel consisting of two rows of 4×2 Lamp-encapsulated straw hat-shaped F5-F8 LED beads with focusing lenses, arranged parallel to each other in the left-right direction and tilted forward and backward respectively, with the central axis mounting elevation angle (β4) between 5° and 15°, serves as the LED central light source group (440). The main beam of the LED central light source group (440) is matched with the optical structure on the central light outlet slot (440c) and then passes through its light outlet surface (410m) with its central main optical axis elevation angle (θ4) between 0.5° and 18°. The light-emitting structure has a focused emission angle (α4) between 22° and 40°. The LED central light source group (440) has rectangular photovoltaic cells (460) arranged in an array on its front and rear sides, and longitudinal rectangular photovoltaic cells (460) on its left and right sides. The transparent top (410d) of the transparent optical shell (410) has curved edges on its left and right sides that transition from the inside out and from high to low.

[0177] The photovoltaic cell (460) has eight SMD-packaged 2835 surface-mount LEDs soldered at its corners, each facing upwards, which serve as corner LED light distribution light source groups (450) (two at each corner), forming corner light distribution with the LED center light source group (440).

[0178] The outer contour of the transparent enclosure (410b), viewed from below, resembles a petal shape with a partial outward bulge due to the outward bulge of the vertical support body two (410z-2) on its outer perimeter. The inner contour, viewed from below, resembles an octagon. The bottom inner circumference of the transparent enclosure (410b) is provided with a recessed ring-shaped fitting structure one (410q). The ring-shaped fitting structure one (410q) is provided with ring-shaped hot-melt ribs (410h) that are adapted to its shape.

[0179] The inner support body (420) is a transparent injection-molded support layer with a pin header bracket (420c) in the center, adapted to the inner cavity structure of the transparent optical plastic shell (410). It is fixed in the accommodating cavity (410q) by a stepped positioning structure (410d) and adhesive. An air layer is formed between the top of the inner support body (420) and the inner top wall of the transparent optical plastic shell (410), so that the vertical distance ΔH4 between the photovoltaic power generation cell (460) and the inner top surface of the transparent optical plastic shell (410) above it is controlled between 2mm and 5mm, and the vertical distance ΔH5 between the LED central light source group (440) and the inner top surface of the transparent optical plastic shell (410) above it is between 1mm and 4mm. This makes the photovoltaic power generation cell (460) and the LED central light source group (440) of the road stud less susceptible to damage from shell deformation caused by vehicle rolling or impact, resulting in a longer product service life.

[0180] The LED central light source group (440), LED light distribution light source group (450), photovoltaic power generation cell (460), energy storage element (470), and control and drive circuit (480) are connected by circuitry. The energy storage element (470) and control and drive circuit (480) are respectively embedded below the inner support body (420), and the above components are then fixed in the transparent optical plastic shell (410) with two-component epoxy resin.

[0181] The composite bottom shell (490) is a bottom-cover type injection-molded bottom shell with a glue-filling hole (490k) and outwardly protruding spoke-shaped ribs (490j) at the bottom (which can make the bottom of the composite shell more firmly bonded to the mounting glue and prevent it from rotating). The edge of the composite bottom shell (490) has an upwardly protruding ring-shaped fitting structure two (490q), which is provided with a welding groove (490h) corresponding to the hot-melt protrusion (410h) at the bottom of the transparent enclosure (410b). The ring-shaped fitting structure two (490q) of the composite bottom shell (490) is fitted into the ring-shaped fitting structure one (410q) so that the composite bottom shell (490) is embedded in the bottom inner perimeter of the transparent enclosure (410b). The composite shell is formed by hot-melt bonding with the transparent optical plastic shell (410) through the hot-melt protrusion (410h) and the welding groove (490h).

[0182] Encapsulating adhesive is then poured into the potting holes (490k), leveled, and cured to form a waterproof encapsulation structure (440). Polyurethane encapsulating adhesive can be first poured, leveled, and cured to form a soft adhesive layer of a certain thickness, followed by epoxy encapsulating adhesive poured, leveled, and cured to form a hard adhesive layer of a certain thickness. The soft adhesive layer provides cushioning and can withstand certain deformations, making the photovoltaic cells (460) and circuit boards of the road stud less susceptible to damage from vehicle crushing or impact, resulting in a longer product lifespan.

[0183] The outer surface of the composite shell may be provided with a protective coating, or the outer surface and bottom surface of the composite shell may be provided with a protective coating, such as an anti-reflective coating with scattering and reflection function, a sandblasted coating with a rough surface, or a color-developing coating with a specific color, etc.

[0184] Among them, the control and drive circuit (480) can control the light emission modes of the LED central light source group (440) and the LED light distribution light source group (450) respectively, realize various control and light emission effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission color. It can also be connected to wireless devices to realize wireless controlled light emission function and intelligent network control function, forming an intelligent light-emitting road stud. It can transmit different traffic information to motor vehicles, non-motor vehicles and pedestrians through the switching of light emission modes.

[0185] This utility model of an in-ground solar-powered luminous plastic-shell road stud has its part buried in the ground (road surface) below the ground baseline during installation. Its photovoltaic panels have a larger installation area compared to existing similar products, and the photovoltaic panels are less prone to damage due to shell deformation. It possesses both bidirectional LED luminous effect (small-angle upward and backward focusing light emission from the central LED light source group) and wide-angle LED luminous effect (upward wide-angle emission from the corner LED light distribution light source group). The corner LED light distribution light source group can compensate for the brightness and angle of the main LED light source, enhancing its luminous effect. This allows for a larger luminous area for close-range observation, facilitating observation by non-motorized vehicle drivers and pedestrians, and a longer viewing distance for long-range observation, benefiting motorized vehicle drivers. It adapts to the increasing trend of mixed pedestrian and vehicle traffic, and is particularly suitable for installation on roads at intersections, crossroads, and pedestrian crossings. It also facilitates intelligent control and multi-functional luminescence, offering higher cost-effectiveness and better application prospects.

[0186] Example 5

[0187] A buried solar-powered luminescent metal casing road stud includes a transparent optical plastic shell (510), an inner support body (520), a curing encapsulant body (530), an LED central light source group (540), an LED light distribution light source group (550), a photovoltaic power generation cell (560), an energy storage element (570), a control and drive circuit (580), a composite bottom shell (590), fasteners (5100), an annular cover (5110-1), and a protective bottom shell (5110-2). Figure 23-28 As shown.

[0188] The transparent optical shell (510) is a symmetrical PC injection-molded cavity shell with a downward-opening accommodating cavity (510q) formed by a transparent top (510d) and a transparent surrounding wall (510b) integral with it and extending downward. The outer top surface of the transparent top (510d) has anti-slip protrusions (510p), and the inner top wall has an array of round light guide structures (510). The transparent top (510d) is surrounded by a relatively low pressing part that forms a stepped structure with it.

[0189] The transparent top (510d) of the transparent optical shell (510) has concave center light-emitting slots (540c) on its inner top wall, which are adapted to the LED center light source group (540) and correspond to the front and rear light emission directions, respectively. The center light-emitting slots (540c) are light-emitting slots with a vertical cross-section similar to an isosceles trapezoid with an upward arch. The front and rear light-incident surfaces (510r) of the light-emitting slots are inclined surfaces, respectively corresponding to the two sides of the isosceles trapezoid. The front and rear light-incident surfaces (510r) are matched with the front and rear light-emitting surfaces (510m) and the angles and thicknesses of their corresponding sidewalls to facilitate the assembly angle of the LED center light source group (540) as required. The emitted light has a refraction structure, a deflection structure, and an upward shift structure. The central light-emitting slot (540c) contains a hanging strip-shaped divider (540g), similar to a dividing rib, which serves to separate sections and strengthen the structure. Below the central light-emitting slot (540c), on the inner support body (520), at the corresponding location, two rows of horizontally arranged (forward and backward) LED chips (4×2 Lamp-encapsulated straw hat-shaped with focusing lenses, F5-F8) are fixed at a certain height via a pin header bracket (520c). These chips act as the LED central light source group (540). Figure 27 As shown, the main beam of the LED central light source group (540) is matched with the optical structure on the central light-emitting slot (540c), and then emitted through its light-emitting surface (510m) with its central principal optical axis elevation angle (θ4) between 1° and 16° and its emission range angle (α4) between 25° and 40°. Alternatively, the LED central light source group (540) can be fixed at a certain height to the inner support body (520) of the photovoltaic panel via pin welding. Figure 28 As shown, the LED central light source group (540) has rectangular photovoltaic cells (560) arranged in an array on its front and rear sides, and longitudinal rectangular photovoltaic cells (560) are arranged on its left and right sides.

[0190] The photovoltaic cell (560) has eight SMD-packaged 2835 surface-mount LEDs welded to its corners and left and right outer photovoltaic panels, which serve as LED light distribution light source groups (550) (one at each corner and two on each side), forming corner light distribution and left and right light distribution with the LED central light source group (540), respectively.

[0191] The outer contour of the transparent enclosure (510b), viewed from below, resembles a petal shape with a partially concave outer perimeter due to the concave vertical support structure (510s-1). The bottom periphery of the transparent enclosure (510b) is provided with a recessed ring-shaped fitting structure (510q). Within the ring of the ring-shaped fitting structure (510q), there are multiple ring-shaped hot-melt ribs (510h) that match its shape.

[0192] The inner support body (520) is an injection-molded support layer with a pin header bracket (520c) in the center, which is adapted to the inner cavity structure of the transparent optical plastic shell (510). It is fixed in the accommodating cavity (510q) by a stepped positioning structure (510d) and adhesive. An air layer is formed between the top of the inner support body (520) and the inner top wall of the transparent optical plastic shell (510), so that the photovoltaic cell (560) and the inner top surface of the transparent optical plastic shell (510) above it are in close proximity. The vertical spacing ΔH4 is controlled between 2mm and 4mm, so that the vertical spacing ΔH5 between the LED central light source group (540) and the inner top surface of the transparent optical plastic shell (510) above it is between 1mm and 3mm. This makes the photovoltaic power generation cell (560) of the road stud and the LED central light source group (540) less susceptible to damage from shell deformation caused by vehicle running or impact, resulting in a longer product service life. The inner support body (520) can also be made of circuit board or photovoltaic panel.

[0193] The LED central light source group (540), LED light distribution light source group (550), photovoltaic power generation cell (560), energy storage element (570), and control and drive circuit (580) are connected by circuitry. The energy storage element (570) and control and drive circuit (580) are respectively embedded below the inner support body (520), and the above components are then fixed in the transparent optical plastic shell (510) with two-component epoxy resin.

[0194] The composite bottom shell (590) is a bottom-cover type injection-molded bottom shell with a glue-filling hole (590k) at the bottom. The edge of the composite bottom shell (590) has an upwardly protruding ring-shaped fitting structure two (520q). The ring-shaped fitting structure two (520q) has a welding groove (590h) inside the ring that corresponds to the hot-melt rib (510h) at the bottom of the transparent enclosure (510b). The fitting structure two (520q) of the composite bottom shell (520) is fitted into the fitting structure (510q) at the bottom of the transparent enclosure (510b) so that the composite bottom shell (520) surrounds the bottom periphery of the transparent enclosure (510b). The composite shell is formed by hot-melt bonding with the transparent optical plastic shell (510) through the hot-melt rib (510h) and the welding groove (590h).

[0195] Encapsulating adhesive is then poured into the potting holes (590k), leveled, and cured to form a waterproof encapsulation structure (540). Polyurethane encapsulating adhesive can be poured, leveled, and cured first to form a soft adhesive layer of a certain thickness, followed by epoxy encapsulating adhesive poured, leveled, and cured to form a hard adhesive layer of a certain thickness. This forms a waterproof and insulating inner liner structure. The soft adhesive layer acts as a buffer, resisting certain deformations, thus preventing damage to the photovoltaic cells (560) and circuit boards of the road studs from vehicle crushing or impact, resulting in a longer product lifespan.

[0196] The aforementioned waterproof and insulating encapsulated inner liner structure is fitted into the accommodating cavity of the protective bottom shell (5110-2). A portion of the bottom surface of the metal annular cap (5110-1), which has six fixing screw holes corresponding to the fixing screw holes on the inner protruding posts of the protective bottom shell (5110-2), is pressed onto the stepped inner ring of the metal protective bottom shell (5110-2), and another portion is pressed onto the pressing part of the transparent optical plastic shell (510). Fastening screws are screwed into the fixing screw holes to act as fasteners (5100). Silicone glue is then dripped onto the fastening screws and cured to seal them, acting as plugs. This locks the waterproof and insulating encapsulated inner liner structure into the protective shell formed by assembling the annular cap (5110-1) and the protective bottom shell (5110-2).

[0197] Among them, the control and drive circuit (580) can control the light emission mode of the LED central light source group (540) and the LED light distribution light source group (550) respectively, realize a variety of control and light emission effects such as dual-group dual control, multi-group multi-control, and dual-color or multi-color switching of light emission color. It can also be connected to wireless devices to realize wireless controlled light emission function and intelligent network control function, forming an intelligent light-emitting road stud. It can transmit different traffic information to motor vehicles, non-motor vehicles and pedestrians through the switching of light emission mode.

[0198] This utility model of an underground solar-powered luminous metal shell road stud is installed with its part below the underground baseline buried in the ground (road surface). Its photovoltaic panels have a larger installation area compared to existing similar products, and the photovoltaic panels are less susceptible to damage due to shell deformation. It features both bidirectional LED lighting effects with the central LED light source group focusing light forward and backward at small angles, and wide-angle LED lighting effects with the side LED light distribution light sources grouping light upwards. The side LED light distribution light sources group can compensate for the brightness and angle of the main LED light source, enhancing its brightness. This allows for a larger luminous area for close-range observation, facilitating observation by non-motorized vehicle drivers and pedestrians, and a longer viewing distance for long-range observation, benefiting motorized vehicle drivers. It adapts to the increasing trend of mixed pedestrian and vehicle traffic, and is particularly suitable for installation on roads at intersections, crossroads, and pedestrian crossings. It also facilitates intelligent control and multi-functional lighting, offering higher cost-effectiveness and better application prospects.

[0199] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, variations, combinations, additions, equivalent substitutions, etc., made within the spirit and principles of the present utility model, or the application of the present technology to related and similar technical fields, should be included within the protection scope of the present utility model.

Claims

1. An underground solar LED light-emitting road stud, comprising a transparent optical plastic shell (1), an inner support body (2), a curing body with encapsulant (3), an LED central light source group (4), a photovoltaic device containing a photovoltaic power generation cell (6), an energy storage element (7), and a control and drive circuit (8); The transparent optical plastic shell (1) is a symmetrical cavity-shaped shell with a downward-opening accommodating cavity (1q) formed by a transparent top (1d) and a transparent surrounding wall (1b) integral with it and extending downward. The outer edge of the transparent top (1d) is the ground reference surface of the road spike. Its features are: The transparent top (1d) has a raised portion at the middle part along the front and rear direction of the corresponding road spike, which is higher than its underground reference surface. The raised portion and the non-raised portions near its front and rear ends form a high-low transition junction through the light-emitting surface (1m). The inner top wall of the central part of the raised portion is provided with a concave and arched central light-emitting slot (4c) adapted to the LED central light source group (4). The inner sidewalls of the central light-emitting slot (4c) with downward opening are provided with light-incident surfaces (1r). The central light-emitting slot (4c) or the area below the central light-emitting slot (4c) is symmetrically provided with multiple LEDs forming an LED central light source group (4) that serves as a far-beam light source group. The front and rear areas or the outer areas of the LED central light source group (4) are provided with photovoltaic devices (6) composed of modular photovoltaic cells. The edges and / or corners of the photovoltaic cells are symmetrically arranged with LED light distribution light source groups (5) at intervals. The LED central light source group (4), LED light distribution light source group (5), photovoltaic devices (6), energy storage elements (7) and control and drive circuits (8) are connected by circuits. The photovoltaic cells are connected in series and / or in parallel. The inner support body (2) is a support layer adapted to the inner cavity structure of the transparent optical plastic shell (1) and combined in the accommodating cavity (1q). The inner support body (2) is provided with a curing body (3) for encapsulating glue below it. The inner support body (2), LED central light source group (4), photovoltaic device (6), energy storage element (7), and control and drive circuit (8) are encapsulated in the transparent optical plastic shell (1). The energy storage element (7) and control and drive circuit (8) are respectively located in the inner support body (2) or below the inner support body (2). The buried solar LED light-emitting stud with a waterproof encapsulation structure is formed above the photovoltaic power generation cell and between the LED central light source group (4) and the inner top surface of the transparent optical plastic shell (1) with an air layer. The assembly elevation angle (β4) of the LED central light source group (4) satisfies: 0°≤β4≤45°. The LED of the LED central light source group (4) matches the angle and thickness of the incident surface (1r), the exit surface (1m) and the side wall of the central light-emitting slot (4c) of the transparent optical shell (1), forming a light-emitting optical structure in which the central principal optical axis elevation angle (θ4) of the emitted light (L4) incident from the incident surface (1r) and emitted in the front-back direction through the exit surface (1m) satisfies: 0°≤θ4<45° and its emission range angle (α4) satisfies: θ4≤α4 / 2. The LED light distribution light source group (5) emits light through the optical structure at the corresponding part of the transparent optical plastic shell (1), and forms an LED light distribution optical structure with the LED central light source group (4) that includes, but is not limited to, matching the luminous brightness, matching the luminous angle, and matching the luminous color.

2. The buried solar LED luminous road stud according to claim 1, characterized in that: The central light-emitting slot (4c) or below the central light-emitting slot (4c) is provided with an LED central light source group (4) formed by two rows of LEDs arranged back to back and in an array along the left and right direction. Rectangular photovoltaic cells are provided on the front and rear sides of the LED central light source group (4). LED light distribution light source groups (5) are provided on the front and rear outer sides and / or the left and right outer sides of the photovoltaic cells. Alternatively, a set of two opposing LED central light source groups (4) may be provided inside or below the central light source slot (4c). Rectangular photovoltaic cells may be provided on the front, back, left, and right sides of the LED central light source group (4). LED light distribution light source groups (5) may be provided on the front and back outer sides and / or the left and right outer sides of the photovoltaic cells. Alternatively, two sets of LED central light source groups (4) arranged opposite each other are provided inside or below the central light source slot (4c). The LED central light source groups (4) are surrounded by photovoltaic cells arranged in a polygonal block pattern. LED light distribution light source groups (5) are provided on the front and rear outer sides and / or the left and right outer sides of the photovoltaic cells. Alternatively, two sets of LED central light source groups (4) are provided in or below the central light source group (4c) and are arranged in opposite directions. The LED central light source group (4) is surrounded by photovoltaic power generation cells arranged in a radial block pattern. An LED light distribution light source group (5) is provided between adjacent photovoltaic power generation cells.

3. The buried solar LED luminous road stud according to claim 1, characterized in that: The LED in the LED central light source group (4) is an LED with a built-in focusing structure, or the LED in the LED central light source group (4) is an F5 to F10 LED chip with a Lamp package and a transparent focusing head and pins. Alternatively, the LED in the LED center light source group (4) is an LED with a full-angle light emission range between 20° and 60°, or the inner support body (2) is equipped with a pin header bracket (2c), and the LED center light source group (4) is fixed on the circuit board by the pin header bracket (2c). The LED light source group (5) is a surface-mount LED or a lamp-packaged LED. Alternatively, the LED light source group (5) may be located on or above the inner support body (2), or the LED light source group (5) may be located inside or below the transparent inner support body (2). Alternatively, the LED light source group (5) may be disposed on the circuit board layer that serves as the inner support body (2), or the LED light source group (5) may be disposed on the photovoltaic panel layer that serves as the inner support body (2).

4. The buried solar LED luminous road stud according to claim 1, characterized in that: The ratio of the light intensity (I4) of the LED in the LED central light source group (4) to the light intensity (I5) of the LED in the LED light distribution light source group (5) is greater than 2:

1. The LED central light source group (4) and the LED light distribution light source group (5) form an LED light distribution optical structure that matches different light intensities. Alternatively, the LED light distribution light source group (5) can be matched with the optical structure of its corresponding part in the transparent optical shell (1) to form a light-emitting optical structure in which the elevation angle of the central principal optical axis after emission from the transparent optical shell (1) satisfies: 45°<θ5≤90°. The LED central light source group (4) and the LED light distribution light source group (5) can respectively act as the high beam light source group and the low beam light source group to form an LED light distribution optical structure that matches different principal emission angles. Alternatively, the emission range angle 2 (α5) of the emitted light (L5) after exiting the transparent optical shell (1) of the LED light distribution light source group (5) is greater than or equal to the emission range angle 1 (α4) of the emitted light (L4) of the LED central light source group (4) after exiting the light-emitting surface (1m) in the front-back direction, or the emission range angle 1 (α4) of the emitted light (L4) of the LED central light source group (4) after entering the light-emitting surface (1r) and exiting the light-emitting surface (1m) in the front-back direction satisfies: α4≤60°, and the emission range angle 2 (α5) of the emitted light (L5) after exiting the transparent optical shell (1) of the LED light distribution light source group (5) satisfies: α5≥120°, and the light distribution of the LED central light source group (4) and the LED light distribution light source group (5) forms an LED light distribution optical structure with no light emission dead angle in the front-back direction. Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may each contain LEDs of different emission colors, and the LED central light source group (4) and the LED light distribution light source group (5) may form an LED light distribution optical structure that matches the different emission colors. Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) are controlled and driven by the control and driving circuit (8) to emit light with different periods T or duty cycles D respectively, and the LED central light source group (4) and the LED light distribution light source group (5) form an LED light distribution optical structure that matches different light emission modes.

5. The buried solar LED luminous road stud according to claim 1, characterized in that: The assembly elevation angle (β4) of the LED central light source group (4) is about 0°, and the upper horizontal thickness W1 of the side wall where the light-emitting surface (1m) is located is greater than or equal to its lower horizontal thickness W2. Alternatively, the assembly elevation angle (β4) of the LED central light source group (4) is greater than 0°, and the upper tilt thickness W3 of the side wall where the light-emitting surface (1m) is located along the assembly elevation angle (β4) is less than or equal to its lower tilt thickness W4. Alternatively, the mounting elevation angle of the LED central axis of the LED light distribution light source group (5) is approximately 90° vertically upward, or the light-emitting surface (1m) is an inclined surface, or the light-incident surface (1r) is an inclined surface. Alternatively, the outer top surface (1a1) of the raised portion may be a plane or a slightly arched curved surface, or the inner top surface (1b1) of the raised portion may be a plane or a slightly arched curved surface. Alternatively, the outer top surface (1a2) of the unprotruding portion on both sides of the protruding part can be a plane, or the inner top surface (1b2) of the unprotruding portion on both sides of the protruding part can be a plane. Alternatively, the left and right ends of the raised portion transition from the inside out and from high to low through curved or inclined surfaces to the outer edge of the transparent top (1d).

6. The buried solar LED luminous road stud according to claim 1, characterized in that: The assembly elevation angle (β4) of the LED central light source group (4) satisfies: 0°≤β4≤15°. The LED of the LED central light source group (4) matches the angle and thickness of the incident surface (1r), the exit surface (1m) and the side wall of the central light-emitting slot (4c) of the transparent optical shell (1), forming a light-emitting optical structure in which the central principal optical axis elevation angle (θ4) of the emitted light (L4) incident from the incident surface (1r) and emitted in the front-back direction through the exit surface (1m) satisfies: 0°≤θ4<20° and its emission range angle (α4) satisfies: 20°≤α4≤45°. or The aforementioned center light-emitting slot (4c) is a light-emitting slot with an optical structure including but not limited to light refraction structure, light reflection structure, light focusing structure, light angle deflection structure, and light upward shift structure, which is adapted to the LED center light source group (4) and facilitates the assembly of the LED center light source group (4) at the required angle. Alternatively, the light-emitting slot (4c) may have a spherical light-concentrating lens on its light-incident surface (1r) and / or light-emitting surface (1m). Alternatively, the aforementioned mid-position light-emitting slot (4c) is a light-emitting slot with a vertical cross-section resembling an isosceles trapezoid, and the aforementioned incident surfaces (1r) correspond to the two sides of the isosceles trapezoid. Alternatively, the aforementioned center light-emitting groove (4c) may be provided with a downwardly protruding strip-shaped rib (4j). Alternatively, the inner top surface of the central light-emitting slot (4c) is provided with a hanging partition (4g), which divides the central light-emitting slot (4c) into two or more separate light-emitting slots.

7. The buried solar LED luminous road stud according to claim 1, characterized in that: The photovoltaic cell is provided with a front and rear edge LED light distribution light source group (5-1) on its front and rear outer sides. The inner top wall above the front and rear edge LED light distribution light source group (5-1) is provided with a recessed front and rear edge light output groove (5c-1) that is adapted to it. or / and The photovoltaic cell is provided with left and right side LED light distribution light source group two (5-2) on the left and right outer sides, and the inner top wall above the left and right side LED light distribution light source group two (5-2) is provided with a recessed left and right side light output groove two (5c-2) that is adapted to it.

8. The buried solar LED luminous road stud according to claim 7, characterized in that: The emission range angle (α5) of the emitted light (L5) from the LEDs of the front and rear edge LED light distribution light source group one (5-1) or / and the left and right edge LED light distribution light source group two (5-2) after being emitted through the transparent optical plastic shell (1), and the emission range angle (α4) of the emitted light (L4) from the LED of the LED center light source group (4) after being incident on the light-incident surface (1r) and then emitted in the front and rear direction through the light-outcident surface (1m), satisfy: α4+α5≥180°. The light distribution of the two forms an LED light distribution optical structure with no light-emitting dead angle in the front and rear direction of the corresponding road spike. Alternatively, the aforementioned front and rear side light-emitting slot one (5c-1) is a light-emitting slot adapted to the front and rear side LED light distribution light source group one (5-1), and has a light-diffusing optical structure (5k) that facilitates the emission of light from the front and rear side LED light distribution light source group one (5-1) with a large emission range angle. The assembly elevation angle of the LED central axis of the front and rear side LED light distribution light source group one (5-1) is approximately 90° vertically upward. The front and rear side LED light distribution light source group one (5-1) and the front and rear side light-emitting slot one (5c-1) are matched to form a near-beam LED light distribution optical structure. Alternatively, the second light-emitting slot (5c-2) on the left and right sides can be adapted to the second LED light distribution light source group (5-2) on the left and right sides, and have a light-diffusing optical structure (5k) that facilitates the emission of light from the second LED light distribution light source group (5-2) on the left and right sides with a large emission range angle. The assembly elevation angle of the LED central axis of the second LED light distribution light source group (5-2) on the left and right sides is about 90° vertically upward. The second LED light distribution light source group (5-2) on the left and right sides matches the second light-emitting slot (5c-2) on the left and right sides to form a near-beam LED light distribution optical structure. Alternatively, the first (5c-1) light-emitting slot at the front and rear edges or the second (5c-2) light-emitting slot at the left and right edges may be arc-shaped, arc-shaped, or chord-shaped edge block or edge segment light-emitting slots. Alternatively, the aforementioned front and rear side light-emitting slot one (5c-1) and / or left and right side light-emitting slot two (5c-2) are light-emitting slots with a trapezoidal or inverted U-shaped vertical cross-section. Alternatively, a second partition (5g) may be provided on the inner top surface of the first front and rear side light-emitting slot (5c-1), which divides the first front and rear side light-emitting slot (5c-1) into two or more separate light-emitting slots, or / and a second partition (5g) may be provided on the inner top surface of the second left and right side light-emitting slot (5c-2), which divides the second left and right side light-emitting slot (5c-2) into two or more separate light-emitting slots.

9. A buried solar LED luminous road stud according to claim 8, characterized in that: The light diffusion optical structure (5k) is a light diffusion grid, which is a downwardly convex V-shaped, U-shaped, or inverted trapezoidal rib array, or the light diffusion grid is an upwardly concave groove array.

10. A buried solar LED luminous road stud according to claim 1, characterized in that: The outer edge of the transparent top (1d) of the transparent optical plastic shell (1) is circular. Alternatively, the portion of the transparent enclosure (1b) and the transparent top (1d) of the aforementioned transparent optical plastic shell (1) adjacent to each other may be a circular structure. Alternatively, the transparent enclosure (1b) of the transparent optical shell (1) may have a circular inner edge structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a circle-like inner edge structure formed by a plurality of chord-cut edges near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a circle-like inner edge structure formed by a vertically convex structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a polygonal inner edge structure near its upper edge, or the transparent enclosure (1b) of the transparent optical shell (1) may have a polygon-like inner edge structure formed by a vertically convex structure near its upper edge. The transparent enclosure (1b) of the transparent optical plastic shell (1) has a circular outer edge structure near its lower edge, or a circle formed by multiple chords cutting its lower edge, or a circle formed by a vertical inward convex structure forming its lower edge, or a circle formed by a vertical outward convex structure forming its lower edge, or a circle formed by a vertical outward convex structure forming its lower edge, or a polygonal outer edge structure near its lower edge, or a polygon formed by a vertical outward convex structure forming its lower edge. Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circle formed by multiple chord tangents forming a near-circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a circle formed by a vertically convex structure forming a near-circular inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a polygonal inner edge structure, or the transparent enclosure (1b) of the transparent optical plastic shell (1) near the lower edge is a polygon formed by a vertically convex structure forming a near-polygonal inner edge structure. Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) may be recessed to form a vertical support structure (1s-1), or the inner wall of the transparent enclosure (1b) of the transparent optical plastic shell (1) may be provided with a convex vertical support body (1z-1). Alternatively, the transparent enclosure (1b) of the transparent optical plastic shell (1) may protrude outward to form a second vertical support structure (1s-2), or the outer side wall of the transparent enclosure (1b) of the transparent optical plastic shell (1) may be provided with a second vertical support body (1z-2) that protrudes outward. Alternatively, the inner wall of the transparent enclosure (1b) of the transparent optical shell (1) is further provided with a positioning structure (1w) for assembling the inner support body (2), and the inner support body (2) is fitted and fixed in the receiving cavity (1q) of the transparent optical shell (1) through the positioning structure (1w). Alternatively, the top edge of the transparent optical plastic shell (1) may be provided with symmetrically arranged protruding supports (1c), or the four corners of the top edge of the transparent optical plastic shell (1) may be provided with protruding supports (1c). Alternatively, the top surface and / or edge portion of the transparent optical plastic shell (1) may be provided with a light guiding structure (1g), or the edge portion of the top of the transparent optical plastic shell (1) may be provided with a striped light guiding structure (1g), or the top surface and / or edge portion of the top of the transparent optical plastic shell (1) may be provided with an anti-slip structure (1p).

11. A buried solar-powered LED luminous road stud according to claim 1, characterized in that: Its characteristics are: The inner support body (2) is either a circuit board layer or a photovoltaic panel.

12. The buried solar LED luminous road stud according to claim 1, characterized in that: Its characteristics are: The encapsulating adhesive cured molded body (3) is a single-layer cured encapsulating adhesive cured molded body or a layered cured encapsulating encapsulating adhesive cured molded body. Alternatively, the encapsulant curing molded body (3) may be a single-curing encapsulant curing molded body or a multi-curing encapsulant curing molded body. Alternatively, the encapsulating adhesive cured molding body (3) is a two-layer composite encapsulating adhesive cured molding body comprising a soft adhesive layer and a hard adhesive layer, wherein, The encapsulation adhesive cured molding body (3) near the inner support body (2) is a soft adhesive layer, and the encapsulation adhesive cured molding body (3) near the bottom of the transparent optical plastic shell (1) is a hard adhesive layer.

13. The buried solar LED luminous road stud according to claim 1, characterized in that: The bottom of the transparent optical plastic shell (1) is combined with a composite bottom shell (9) with potting holes (9k) through a composite structure to form a composite shell. The encapsulation adhesive cured molding body (3) encapsulates the inner support body (2), LED central light source group (4), photovoltaic device (6), energy storage element (7), control and drive circuit (8) in the composite shell to form a waterproof and pressure-resistant encapsulation structure.

14. A buried solar LED luminous road stud according to claim 13, characterized in that: Its characteristics are: The bottom of the transparent enclosure (1b) of the transparent optical plastic shell (1) is provided with a composite structure one (1h) for bonding with the composite bottom shell (9). The composite structure one (1h) is a hot-melt composite structure, a solvent composite structure, or an adhesive composite structure, or two or three of them. The composite bottom shell (9) is provided with a composite structure two (9h) corresponding to the composite structure one (1h) for bonding with the transparent optical plastic shell (1). The composite structure two (9h) is a hot-melt composite structure, a solvent composite structure, or an adhesive composite structure, or two or three of them. The composite bottom shell (9) is bonded to the bottom of the transparent enclosure (1b) of the transparent optical plastic shell (1) by the composite structure one (1h) and the composite structure two (9h) to form a composite shell. Alternatively, the composite base shell (9) may be a transparent plastic injection-molded base shell with the same or similar material as the transparent optical plastic shell (1), or a non-transparent plastic injection-molded base shell with the same or similar material as the transparent optical plastic shell (1). Alternatively, the bottom of the composite bottom shell (9) may have a concave or convex convex structure (9j).

15. A buried solar LED luminous road stud according to claim 13, characterized in that: It also includes, but is not limited to, a fastening structure (10) for fastening screws or bolts. The transparent enclosure (1b) of the transparent optical plastic shell (1) and / or the vertical support body one (1z-1) or vertical support body two (1z-2) of the transparent optical plastic shell (1) have a fixing hole one (1k) adapted to the fastening structure (10), or the composite bottom shell (9) has a fixing hole two (9k2) adapted to the fastening structure (10). The transparent optical plastic shell (1) and the composite bottom shell (9) are further assembled and fixed by the fastening structure (10). Alternatively, a hot-melt composite structure may be provided around the periphery of the first fixing hole (1k) and / or the periphery of the second fixing hole (9k2), and the transparent optical plastic shell (1) and the composite bottom shell (9) may be composited by the hot-melt composite structure and assembled and fixed by the fastening structure (10). Alternatively, a waterproof sealing structure may be provided in the first fixing hole (1k) or / and the second fixing hole (9k2), or a structural adhesive reinforcement structure may be provided in the first fixing hole (1k) or / and the second fixing hole (9k2).

16. The buried solar LED luminous road stud according to claim 1, characterized in that: The outer side wall and / or bottom and / or top edge of the transparent optical plastic shell (1) are further combined with a protective shell (11), wherein the protective shell (11) is a soft protective shell with a cushioning function, or the protective shell (11) is a hard protective shell with a structural reinforcement function. Alternatively, the protective outer shell (11) may be a protective bottom shell (11-2) consisting of side walls and a bottom, with an upward-opening cavity. The transparent optical plastic shell (1) may also be provided with fixing screw holes (1s) that are compatible with the fastening structure (10). The transparent optical plastic shell (1) and the protective bottom shell (11-2) are combined by the fastening structure (10) to form a buried solar light-emitting road stud. Alternatively, the protective shell (11) is a combined shell formed by assembling an annular cover (11-1) and a protective bottom shell (11-2) through a fastening structure (10). The transparent optical plastic shell (1) is assembled inside the combined protective shell (11) to form the top of the transparent optical plastic shell (1) with the buried solar light-emitting road stud exposed at the top of the shell.

17. A buried solar-powered LED luminous road stud according to claim 1, characterized in that: The transparent optical plastic shell (1) has a coating protective layer (12) on the outer side wall of the transparent enclosure (1b), or the transparent optical plastic shell (1) has a coating protective layer (12) on the outer side wall and the outer bottom surface of the transparent enclosure (1b).

18. A buried solar-powered LED luminous road stud according to claim 1, characterized in that: The bottom diameter R of the transparent optical plastic shell (1) is between 100mm and 150mm. Alternatively, the height H1 of the transparent top (1d) of the transparent optical plastic shell (1) is between 5mm and 10mm, or the height H2 of the transparent enclosure (1b) of the transparent optical plastic shell (1) is between 30mm and 55mm, or the thickness H3 of the transparent enclosure (1b) of the transparent optical plastic shell (1) is between 5mm and 15mm, or the vertical distance ΔH4 between the photovoltaic power generation sheet and the inner top surface of the transparent optical plastic shell (1) above it is between 1mm and 4mm, or the vertical distance ΔH5 between the LED central light source group (4) and the inner top surface of the transparent optical plastic shell (1) above it is between 1mm and 4mm, or the depth H6 of the central light output groove (4c) is between 5mm and 10mm.

19. A buried solar-powered LED luminous road stud according to claim 1, characterized in that: The control and drive circuit (8) is a control and drive circuit that controls and drives the LED central light source group (4) and the LED light distribution light source group (5) to emit light in different light emission modes. Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may be dual-group dual-color or multi-group multi-color LEDs. Alternatively, the LED central light source group (4) and the LED light distribution light source group (5) may be dual-group dual-control or multi-group multi-control LEDs. Alternatively, the control and drive circuit (8) may be a control and drive circuit that controls and drives the LED central light source group (4) to emit light constantly or at a certain period T and duty cycle D, and controls and drives the LED light distribution light source group (5) to emit light at a certain period T and duty cycle D, or to emit light alternately in two or more groups, or to emit light in a certain time sequence. Alternatively, the control and drive circuit (8) is a microcontroller control circuit, and the buried solar LED luminous road stud is a controlled luminous buried solar luminous road stud in which the LED central light source group (4) and the LED light distribution light source group (5) are controlled by the microcontroller to emit light according to the luminous mode corresponding to the microcontroller's preset program. Alternatively, the control and drive circuit (8) may also be connected to a wireless device, and the buried solar LED light-emitting road stud may be a wireless controlled light-emitting buried solar LED light-emitting road stud with wireless receiving or wireless transmitting and receiving functions.

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