Yard light head and its housing, yard light

Abstract

The utility model belongs to the technical field of road lighting, specifically relates to a yard lamp holder and its shell, yard lamp, and the yard lamp holder includes: casing, including the coaxial setting of outer ring casing and inner ring casing, is connected through the connecting piece between the outer ring casing and inner ring casing, LED light source module is set in the inner ring casing, the inner wall of outer ring casing and the outer wall of inner ring casing jointly enclose and form a upper and lower through annular heat dissipation air duct. The yard lamp holder constructs the upper and lower through annular heat dissipation air duct through the coaxial setting of inner and outer ring casing. The structure can effectively utilize the chimney effect, forms the continuous airflow from bottom to top, quickly carries away the heat generated by LED light source to reduce the lamp pearl temperature. In addition, adopt hollow annular air duct as main heat dissipation structure, replaces the traditional cumbersome heat dissipation fin, guarantees the heat dissipation performance, and lightens the weight of the lamp holder.

Description

Technical Field

[0001] This utility model belongs to the field of road lighting technology, and in particular relates to a courtyard light head and its housing, and a courtyard light. Background Technology

[0002] LEDs generate a significant amount of heat during operation. If the LED chip temperature becomes too high, it will lead to severe light decay and drastically shorten the lifespan of the luminaire. Currently, the most common solution is to use a passive heatsink. This involves installing a separate heatsink, made of extruded or die-cast aluminum alloy, on the back of the LED light source module. This heatsink typically features a dense array of fins, designed to maximize the heat dissipation surface area and utilize natural air convection to dissipate heat.

[0003] However, while the dense fin structure increases the surface area, it also results in a larger overall weight of the lamp, higher material costs, and places higher demands on the structural strength of the lamp post and its installation and maintenance.

[0004] Therefore, how to avoid excessively high LED temperatures without increasing the weight of the garden light head is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one garden light head and its housing, and a garden light.

[0007] In a first aspect, the present disclosure provides a garden light head, comprising: a housing, including an outer ring housing and an inner ring housing coaxially arranged, wherein the outer ring housing and the inner ring housing are connected by a connector; The LED light source module is disposed inside the inner ring housing; The inner wall of the outer shell and the outer wall of the inner shell together form a vertically continuous annular heat dissipation duct.

[0008] In one alternative implementation, the cross-sectional area of ​​the heat dissipation duct gradually decreases from its top to its bottom.

[0009] In one alternative embodiment, the connector is one or more connecting ribs disposed between the outer ring housing and the inner ring housing.

[0010] In one alternative embodiment, a plurality of grooves are arranged in an array on the outer peripheral wall of the inner ring housing, the grooves extending along the axial direction of the inner ring housing.

[0011] In one alternative embodiment, the inner housing includes an upper housing and a lower cover plate, the upper housing and the lower cover plate forming a cavity for placing an LED light source module.

[0012] In one alternative embodiment, the lower cover is fitted onto the upper housing by fastening bolts.

[0013] In one optional embodiment, the LED light source module includes a plurality of LED beads arranged in a uniform array, and the array of LED beads is symmetrically arranged with respect to the bottom center of the inner ring housing.

[0014] Secondly, this disclosure also provides a garden light head housing, comprising: a housing, including an outer ring housing and an inner ring housing arranged coaxially, wherein the outer ring housing and the inner ring housing are connected by a connector; The inner wall of the outer shell and the outer wall of the inner shell together form a vertically continuous annular heat dissipation duct.

[0015] In one alternative implementation, the cross-sectional area of ​​the heat dissipation duct gradually decreases from its top to its bottom.

[0016] Thirdly, this disclosure also provides a courtyard light, including a courtyard light head using the methods described above.

[0017] The beneficial effects of this utility model are that the lamp head of this courtyard light constructs a vertically connected annular heat dissipation airflow through coaxially arranged inner and outer ring shells. This structure effectively utilizes the chimney effect to form a continuous airflow from bottom to top, quickly carrying away the heat generated by the LED light source, thereby reducing the temperature of the LED beads. In addition, the use of a hollow annular airflow as the main heat dissipation structure replaces the traditional bulky heat dissipation fins, reducing the weight of the lamp head while ensuring heat dissipation performance.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A three-dimensional garden light head provided in this embodiment of the present disclosure Figure 1 ; Figure 2 A three-dimensional garden light head provided in this embodiment of the present disclosure Figure 2 ; Figure 3 This is an internal structural diagram of a courtyard light head provided in an embodiment of the present disclosure.

[0022] In the picture: 100. Housing; 110. Outer housing; 120. Inner housing; 121. Groove; 122. Upper housing; 123. Lower cover plate; 200. Connector; 300. LED light source module; 310. Lamp bead; 400. Heat dissipation duct; 500. Fastening bolt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed shortcomings in existing technologies: Currently, the most common solution is to use passive heat sinks. This involves installing a separate heat sink, made of extruded or die-cast aluminum alloy, on the back of the LED light source module. These heat sinks typically feature a dense array of fins, designed to dissipate heat through natural air convection by significantly increasing the surface area. However, while the dense fin structure increases the surface area, it also leads to a heavier overall luminaire, higher material costs, and places greater demands on the structural strength of the lamp post and its installation and maintenance.

[0030] Based on the above research, this disclosure provides a courtyard light head that replaces the traditional solid metal heat sink with a hollow air duct structure, which significantly reduces the overall weight of the light fixture while ensuring heat dissipation capacity, thus solving the above-mentioned problems.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 1 This disclosure provides a garden light head, including: a housing 100, comprising an outer housing 110 and an inner housing 120 coaxially arranged, the outer housing 110 and the inner housing 120 being fixedly connected by a connector 200. The connector 200 ensures that the inner housing 120 and the outer housing 110 maintain a coaxial relative position, while providing necessary support strength for the entire light head structure. An LED light source module 300, as the core light-emitting component, is housed within an accommodating space formed inside the inner housing 120. The inner wall of the outer housing 110 and the outer wall of the inner housing 120 together form a vertically penetrating annular cavity, constituting a heat dissipation duct 400. The heat generated by the LED light source module 300 during operation can be transferred to the inner housing 120 through heat conduction, and then, utilizing the chimney effect, drive air to flow upwards from the bottom of the heat dissipation duct 400, continuously carrying away heat and achieving a highly efficient passive heat dissipation effect. By adopting a hollow annular air duct as the main heat dissipation structure, the traditional bulky heat dissipation fins are replaced, which reduces the weight of the lamp head while ensuring heat dissipation performance.

[0035] See also Figure 1 In some embodiments, the cross-sectional area of ​​the heat dissipation duct 400 gradually decreases from its top to its bottom, forming an inverted cone-shaped or gradually expanding ventilation channel. This gradually expanding heat dissipation duct 400 structure gathers and guides cool air in through an annular gap at the bottom, while a larger opening at the top allows for smooth low-pressure exhaust. This bottom-contracting and top-expanding structure works together to ensure a stable and continuous flow of hot air within the heat dissipation duct 400, achieving efficient passive heat dissipation.

[0036] See also Figure 1 In some embodiments, the connector 200 is a connecting rib disposed between the outer ring housing 110 and the inner ring housing 120, with its inner edge connected to the outer wall of the inner ring housing 120 and its outer edge connected to the inner wall of the outer ring housing 110. Preferably, the number of connectors 200 is at least one, which effectively connects the components while minimizing obstruction of airflow within the heat dissipation duct 400, ensuring smooth airflow for heat dissipation. It should be noted that the number of connectors 200 is not limited to one in this embodiment and can be adjusted according to the environment in which the garden light is located. For example, in areas with frequent windy weather, multiple connectors 200 can be provided (e.g., three or four), and they can be evenly distributed circumferentially along the annular cavity between the outer ring housing 110 and the inner ring housing 120. This even distribution provides balanced and stable support for the inner and outer ring housings 110, effectively preventing housing deformation and improving vibration resistance.

[0037] See also Figure 1 In some embodiments, a plurality of grooves 121 are arrayed on the outer peripheral wall of the inner ring housing 120. The grooves 121 are uniformly arranged in an array along the circumference of the inner ring housing 120. Each groove 121 is elongated and extends strictly along the axial direction of the inner ring housing 120, meaning the length direction of the groove 121 is parallel to the central axis of the inner ring housing 120. Specifically, these grooves 121 can be grooves or recessed structures formed by milling or integral molding on the original outer peripheral wall of the inner ring housing 120. Preferably, the cross-sectional shape of the grooves 121 can be arc-shaped, rectangular, or trapezoidal. The arrayed axial grooves 121 significantly increase the contact surface area between the inner ring housing 120 and the flowing air in the heat dissipation duct 400. When airflow passes through these grooves 121, the groove structure disrupts the laminar flow state of the air, enhancing the turbulent effect, thereby greatly strengthening the heat conduction efficiency from the wall of the inner ring housing 120 to the air. The groove 121 structure differs from traditional heat dissipation fins. It adds almost no weight to the lamp and effectively improves the heat exchange efficiency of the entire heat dissipation duct 400 by increasing the heat exchange area.

[0038] See Figure 2 and Figure 3 In some embodiments, the inner housing 120 adopts a split design, consisting of an upper housing 122 and a lower cover plate 123. The upper housing 122 serves as the main structure, and its sidewalls form the peripheral contour of the inner housing 120. The lower cover plate 123 is a component used to close the bottom opening of the upper housing 122. The upper housing 122 and the lower cover plate 123 are detachably connected together by fastening bolts 500 provided on their edges. When the upper housing 122 and the lower cover plate 123 are mated and fixed, their interiors are enclosed to form a sealed or semi-sealed chamber. This chamber is specifically used to accommodate and fix the LED light source module 300. This split structure facilitates the installation, maintenance, and replacement of the light source module.

[0039] See Figure 1 and Figure 2 In some embodiments, several mounting posts are provided on the top of the cavity of the inner ring housing 120. The circuit board of the LED light source module 300 is fixed to the mounting posts by screws or clips, thereby achieving precise positioning and stable installation of the LED light source module 300 in the inner ring housing 120. The LED light source module 300 includes multiple LED beads 310. These beads 310 are arranged in a rectangular array. The array of beads 310 is symmetrically arranged with respect to the bottom center of the inner ring housing 120. This centrally symmetrical rectangular array arrangement not only ensures the uniformity of illumination and avoids local bright spots, but also allows the heat generated by the LEDs to be evenly conducted to the outer wall of the entire inner ring housing 120, avoiding heat concentration. It works in conjunction with the heat dissipation duct 400 structure to jointly optimize the overall heat dissipation performance of the lamp.

[0040] See Figure 1 Some embodiments provide a garden light head housing, including: a housing 100, comprising an outer ring housing 110 and an inner ring housing 120 coaxially arranged, the outer ring housing 110 and the inner ring housing 120 being connected by a connector 200; the inner wall of the outer ring housing 110 and the outer wall of the inner ring housing 120 together enclose a vertically penetrating annular cavity, the annular cavity constituting a heat dissipation duct 400. The heat dissipation duct 400 formed by this annular cavity can utilize the chimney effect of rising hot air to form a continuous upward heat dissipation airflow, which can quickly remove the heat generated by the LED light source, thereby reducing the temperature of the LED bead 310. At the bottom of the housing 100, a lamp post connecting part is provided. This connecting part is cylindrical, and its end is designed with a slot or flange structure for fixing with the lamp post, facilitating the installation and fixation of the entire light head.

[0041] Some embodiments also provide a courtyard light, the lamp post of which is provided with an interface that matches the lamp post connection part described above, through which the lamp head of the courtyard light in the above embodiments can be mounted on the lamp post of the courtyard light.

[0042] In summary, the lamp head of this courtyard light constructs a vertically integrated annular heat dissipation duct 400 through coaxially arranged inner and outer ring housings 110. This structure effectively utilizes the chimney effect to create a continuous upward airflow, quickly carrying away the heat generated by the LED light source and thus reducing the temperature of the LED beads 310. Furthermore, the use of a hollow annular airflow duct as the main heat dissipation structure replaces the traditional bulky heat sink fins, ensuring heat dissipation performance while reducing the weight of the lamp head.

[0043] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0045] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0046] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0047] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A courtyard light fixture, characterized in that, include: The housing (100) includes an outer ring housing (110) and an inner ring housing (120) arranged coaxially, and the outer ring housing (110) and the inner ring housing (120) are connected by a connector (200); An LED light source module (300) is disposed within the inner ring housing (120); The inner wall of the outer ring shell (110) and the outer wall of the inner ring shell (120) together form a vertically connected annular heat dissipation duct (400).

2. The courtyard light head as described in claim 1, characterized in that, The cross-sectional area of ​​the heat dissipation duct (400) gradually decreases from its top to its bottom.

3. The courtyard light head as described in claim 1, characterized in that, The connector (200) is one or more connecting ribs disposed between the outer ring housing (110) and the inner ring housing (120).

4. The courtyard light head as described in claim 1, characterized in that, The outer peripheral wall of the inner ring shell (120) is provided with a plurality of grooves (121), which extend along the axial direction of the inner ring shell (120).

5. The courtyard light head as described in claim 1, characterized in that, The inner housing (120) includes an upper housing (122) and a lower cover plate (123), which together form a cavity for placing an LED light source module (300).

6. The courtyard light head as described in claim 5, characterized in that, The lower cover plate (123) is assembled onto the upper housing (122) by fastening bolts (500).

7. The courtyard light head as described in claim 1, characterized in that, The LED light source module (300) includes a plurality of LED beads (310) arranged in an array, and the array of LED beads (310) is symmetrically arranged with respect to the bottom center of the inner ring housing (120).

8. A lamp holder housing for a courtyard light, characterized in that, include: The housing includes an outer ring housing (110) and an inner ring housing (120) arranged coaxially, and the outer ring housing (110) and the inner ring housing (120) are connected by a connector (200); The inner wall of the outer ring shell (110) and the outer wall of the inner ring shell (120) together form a vertically connected annular heat dissipation duct (400).

9. The courtyard light head housing as described in claim 8, characterized in that, The cross-sectional area of ​​the heat dissipation duct (400) gradually decreases from its top to its bottom.

10. A courtyard light, characterized in that, include: A lamp post, on which a courtyard lamp head as described in any one of claims 1-7 is installed.

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