Table lamp

Abstract

The utility model provides a table lamp. The table lamp comprises a shell assembly, a light-transmitting piece, a light-emitting piece, a reflecting cover, a heat dissipation piece and a lamp holder. The shell assembly comprises a front shell and a rear shell, the front shell and the rear shell define a containing cavity, the front shell is provided with an annular baffle, the annular baffle is provided with a first end close to the light outlet and a second end away from the light outlet, the inner surface of the first end is concavely provided with a plurality of first grooves, and the inner surface of the second end extends in the direction towards the rear shell to form an annular installation part. A mounting space is defined by the annular mounting part, and a plurality of second grooves communicating with the first grooves are concavely formed in the inner surface of the annular mounting part; a heat dissipation opening is formed in the rear shell; a plurality of first heat dissipation channels are formed by the light transmitting part, the first grooves and the second grooves; the heat dissipation piece is arranged in the containing cavity, a plurality of second heat dissipation channels are formed in the heat dissipation piece, and the second heat dissipation channels communicate with the first heat dissipation channels and the heat dissipation opening to jointly form a heat dissipation channel. The table lamp is provided with a heat dissipation channel, heat dissipation efficiency is improved, and the service life of the table lamp is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a table lamp. Background Technology

[0002] With the increasing demand for lighting, desk lamps, as a common lighting device, are widely used in homes, offices, and study areas. However, desk lamps generate a lot of heat during operation, especially high-powered ones or during prolonged use. If this heat cannot be dissipated in time, the internal temperature of the lamp will rise. Excessive temperature can seriously affect the internal electrical components and parts of the lamp. High temperatures can also reduce the mechanical properties of components; for example, plastic parts may deform due to heat, and metal parts may experience thermal fatigue, thus reducing the overall stability and lifespan of the desk lamp. Utility Model Content

[0003] In order to improve at least some of the shortcomings or deficiencies in the prior art, the present invention provides a desk lamp with a heat dissipation channel inside, which forms air flow to achieve convection heat dissipation, improves heat dissipation efficiency, reduces the working temperature of the light-emitting component, ensures the overall stability of the desk lamp, and extends the service life of the desk lamp.

[0004] On one hand, an embodiment of this utility model provides a table lamp, comprising: a housing assembly including a front housing and a rear housing, the front housing and the rear housing together forming a receiving cavity, the front housing being provided with an annular baffle, the annular baffle forming a light outlet, the annular baffle having a first end near the light outlet and a second end away from the light outlet, the inner surface of the first end being recessed with a plurality of first grooves spaced apart from each other along the circumference of the annular baffle, the inner surface of the second end extending toward the rear housing to form an annular mounting portion, the annular mounting portion forming a mounting space, the inner surface of the annular mounting portion being recessed with a plurality of second grooves spaced apart from each other along the circumference of the annular mounting portion, the plurality of second grooves... The second groove is connected to the plurality of first grooves; the rear shell has a heat dissipation vent; a light-transmitting element is disposed in the installation space and forms a plurality of first heat dissipation channels together with the plurality of first grooves and the plurality of second grooves; a light-emitting element is disposed in the receiving cavity and located on the side of the light-transmitting element away from the annular baffle; a reflector is disposed around the light-emitting element and extends into the installation space; a heat dissipation element is disposed in the receiving cavity and located between the light-emitting element and the heat dissipation vent, and a plurality of second heat dissipation channels are formed on the heat dissipation element, the plurality of second heat dissipation channels connecting the plurality of first heat dissipation channels and the heat dissipation vent to form a heat dissipation path; and a lamp holder is connected to the rear shell.

[0005] In some embodiments, the plurality of first grooves and the plurality of second grooves correspond one-to-one.

[0006] In some embodiments, the heat sink includes a main body and a plurality of heat sinks connected to the periphery of the main body, the light-emitting element is mounted on the main body, and a second heat dissipation channel is formed between each pair of adjacent heat sinks.

[0007] In some embodiments, at least one of the heat sinks is provided with a mounting hole for a bolt to pass through.

[0008] In some embodiments, the plurality of heat sinks are arranged radially from the center of the body to the periphery of the body.

[0009] In some embodiments, the main body is a hollow structure.

[0010] In some embodiments, the rear shell has an opening communicating with the receiving cavity, a fixing plate is disposed in the opening, a heat dissipation vent is formed between the opening and the fixing plate, and the fixing plate is connected to the lamp holder.

[0011] In some embodiments, the inner surface of the annular mounting portion is recessed with a mounting recess, and the reflector is protruding with a mounting protrusion that matches the mounting recess.

[0012] In some embodiments, the reflector is a cup-shaped structure, the reflector has a light-incident end and a light-emitting end disposed opposite to the light-incident end, the inner diameter of the reflector gradually increases from the light-incident end toward the light-emitting end; the light-incident end is disposed toward the light-emitting element, and the light-emitting end is disposed toward the light-emitting port.

[0013] In some embodiments, both the front shell and the rear shell are made of plastic.

[0014] As can be seen from the above, the above-mentioned technical features of this utility model can have one or more of the following beneficial effects: a first heat dissipation channel is formed between the light-transmitting component and the first groove on the annular baffle and the second groove on the annular mounting part, and the second heat dissipation channel on the heat dissipation component connects the first heat dissipation channel and the heat dissipation port to form a heat dissipation path, so that air flow is formed inside the desk lamp when it is working to achieve convection heat dissipation, improve heat dissipation efficiency, reduce the working temperature of the light-emitting component, ensure the overall stability of the desk lamp, and extend the service life of the desk lamp. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a table lamp provided for an embodiment of the present utility model.

[0017] Figure 2 This is an exploded structural diagram of a portion of a table lamp provided in an embodiment of the present utility model.

[0018] Figure 3 A cross-sectional structural diagram of a portion of a table lamp provided in an embodiment of this utility model.

[0019] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0020] Figure 5 This is a structural diagram of a portion of a table lamp provided in an embodiment of the present utility model.

[0021] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0022] Figure 7 This is a schematic diagram of the structure of a heat sink in a table lamp, provided as an embodiment of the present utility model.

[0023] Figure 8 This is a schematic diagram of the structure of the back cover of a table lamp provided in an embodiment of the present utility model.

[0024] Figure label:

[0025] 10. Housing assembly; 110. Front shell; 120. Rear shell; 121. Opening; 130. Receiving cavity; 140. Annular baffle; 141. First end; 142. Second end; 143. First groove; 150. Light outlet; 160. Annular mounting part; 161. Mounting space; 162. Second groove; 163. Mounting recess; 170. Fixing plate; 20. Light-transmitting element; 30. Light-emitting element; 40. Reflector; 410. Mounting boss; 420. Light-inlet end; 430. Light-out end; 50. Heat sink; 510. Main body; 520. Heat sink; 521. Fixing hole; 60. Lamp holder; 710. First heat dissipation channel; 720. Second heat dissipation channel; 730. Heat dissipation vent. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model provides a table lamp, including a housing assembly 10, a light-transmitting element 20, a light-emitting element 30, a reflector 40, a heat sink 50, and a lamp holder 60. The housing assembly 10 includes a front shell 110 and a rear shell 120, which together form a receiving cavity 130. The front shell 110 and the rear shell 120 are connected, for example, by a snap-fit ​​connection. The front shell 110 is provided with an annular baffle 140, which surrounds and forms a light outlet 150. The annular baffle 140 has a first end 141 near the light outlet 150 and a second end 142 away from the light outlet 150. The inner surface of the first end 141 is recessed with a plurality of first grooves 143 spaced apart from each other along the circumference of the annular baffle 140. The inner surface of the second end 142 extends toward the rear shell 120 to form an annular mounting portion 160, which surrounds and forms a mounting space 161. The inner surface of the annular mounting portion 160 is recessed with a plurality of second grooves 162 spaced apart from each other along the circumference of the annular mounting portion 160. The plurality of second grooves 162 are connected to the plurality of first grooves 143. The rear shell 120 has a heat dissipation vent 730. The light-transmitting element 20 is disposed in the mounting space 161 and together with the plurality of first grooves 143 and the plurality of second grooves 162 forms a plurality of first heat dissipation channels 710. The light-emitting element 30 is disposed within the receiving cavity 130 and located on the side of the light-transmitting element 20 opposite to the annular baffle 140. A reflector 40 surrounds the light-emitting element 30 and extends into the mounting space 161. A heat sink 50 is disposed within the receiving cavity 130 and located between the light-emitting element 30 and the heat dissipation opening 730. The heat sink 50 has multiple second heat dissipation channels 720 formed on it, which connect to multiple first heat dissipation channels 710 and the heat dissipation opening 730 to form a common heat dissipation pathway. The lamp holder 60 is connected to the rear housing 120.

[0028] The light-transmitting element 20 is installed between the annular baffle 140 and the reflector 40 to ensure that the light-transmitting element 20 will not fall out when the desk lamp is in use. The inner surface of the annular baffle 140 is provided with a first groove 143, and the inner surface of the annular mounting part 160 is provided with a second groove 162, so that there are gaps between the light-transmitting element 20 and the annular baffle 140 and the annular mounting part 160, and finally forming a first heat dissipation channel 710 communicating with the outside; and the heat dissipation element 50 is provided with a second heat dissipation channel 720, which connects the first heat dissipation channel 710 and the heat dissipation port 730. The first heat dissipation channel 710, the second heat dissipation channel 720 and the heat dissipation port 730 form a heat dissipation path and a continuous airflow path.

[0029] Specifically, when the desk lamp is working, external cold air enters the housing assembly 10 through the first heat dissipation channel 710 and then passes through the second heat dissipation channel 720. During operation, the light-emitting element 30 generates heat by converting electrical energy into light energy and heat energy. The heat generated by the light-emitting element 30 is transferred to the heat sink 50 through direct contact, causing the temperature of the heat sink 50 to rise. The surface of the heat sink 50 comes into contact with the cold air flowing to the second heat dissipation channel 720 and transfers heat to the cold air through thermal conduction to form hot air, which finally flows out from the heat dissipation port 730, forming airflow to achieve convection heat dissipation, improving heat dissipation efficiency, reducing the working temperature of the light-emitting element 30, ensuring the overall stability of the desk lamp, and extending the service life of the desk lamp.

[0030] Among them, the light-transmitting element 20 is, for example, a transparent round plate made of polycarbonate, which not only allows light to pass through but also prevents dust from entering the interior of the lamp; the central area of ​​the light-transmitting element 20 is provided with a frosted layer to even out the light emitted from the light-emitting element 30.

[0031] The light-emitting element 30 is, for example, an LED light, and the reflector 40 is, for example, an aluminum conical cover. The surface facing the light-emitting element 30 is, for example, anodized to form a high reflectivity layer, which directs the light to the light outlet 150 to achieve a soft and uniform lighting effect.

[0032] Furthermore, the lamp holder 60 is connected to the rear shell 120 to support the shell assembly 10. The lamp holder 60 can, for example, adjust the angle of the shell assembly 10 through structural design, thereby adjusting the light direction of the light-emitting element 30 to meet the user's needs in different scenarios and improve the practicality and flexibility of the desk lamp.

[0033] See Figure 6 In some embodiments, multiple first grooves 143 and multiple second grooves 162 correspond one-to-one, making the airflow in the first heat dissipation channel 710 smoother and further improving the heat dissipation effect.

[0034] See Figure 7 In some embodiments, the heat sink 50 includes a main body 510 and a plurality of heat sinks 520 connected to the periphery of the main body 510. The light-emitting element 30 is mounted on the main body 510. A second heat dissipation channel 720 is formed between every two adjacent heat sinks 520 to avoid local hot spots and ensure uniform heat dissipation. Specifically, the plurality of heat sinks 520 increases the heat dissipation area of ​​the heat sink 50, allowing heat to be quickly conducted through the directly contacting main body 510 to each heat sink 520 and exchanged with the air in the second heat dissipation channel 720.

[0035] Please see again Figure 7In some embodiments, at least one heat sink 520 is provided with a fixing hole 521 for bolts to pass through, so that the heat sink 50 can be fixed in the receiving cavity 130 of the housing assembly 10 with bolts, which ensures the stability of the heat sink 50 during the operation of the desk lamp, and also facilitates the installation and removal of the heat sink 50.

[0036] In some embodiments, multiple heat sinks 520 are arranged radially from the center of the main body 510 to the periphery of the main body 510, so that the heat sink 50 achieves the maximum heat dissipation area in a limited space, can guide air flow, form a smoother airflow path, and further improve heat dissipation efficiency.

[0037] See Figure 3 In some embodiments, the main body 510 has a hollow structure, which can reduce the overall weight of the heat sink 50; and the interior of the main body 510 can form an auxiliary heat dissipation cavity to further enhance the heat dissipation effect. When the desk lamp is working, the heat generated by the light-emitting element 30 is first transferred to the main body 510 of the heat sink 50, and then quickly conducted to each heat sink 520 through the internal space of the hollow structure. Finally, it exchanges heat with the air through the second heat dissipation channel 720 and is discharged from the heat dissipation port 730.

[0038] See Figure 1 and Figure 8 In some embodiments, the rear shell 120 has an opening 121 communicating with the receiving cavity 130. A fixing plate 170 is disposed within the opening 121, and a heat dissipation vent 730 is formed between the opening 121 and the fixing plate 170. The fixing plate 170 is connected to the lamp holder 60. The fixing plate 170 and the inner wall of the opening 121 are fixedly connected, for example, by a connecting post, so that the heat dissipation vent 730 forms multiple segmented arc-shaped structures.

[0039] See Figure 2 and Figure 6 In some embodiments, the inner surface of the annular mounting portion 160 is recessed with a mounting recess 163, and the reflector 40 is protruding with a mounting boss 410 that matches the mounting recess 163. The mounting recess 163 and the mounting boss 410 cooperate to facilitate the precise installation of the reflector 40 within the mounting space 161 of the annular mounting portion 160.

[0040] See Figure 2 and Figure 4In some embodiments, the reflector 40 has a cup-shaped structure, with an incident light end 420 and an emitting light end 430 opposite to the incident light end 420. The inner diameter of the reflector 40 gradually increases from the incident light end 420 towards the emitting light end 430. The incident light end 420 is positioned towards the light-emitting element 30, and the emitting light end 430 is positioned towards the light-emitting port 150. Because the inner diameter of the reflector 40 gradually increases from the incident light end 420 towards the emitting light end 430, the light emitted by the light-emitting element 30 gradually converges during reflection, forming a concentrated beam, thereby improving the utilization rate of light and allowing the light to more concentratedly illuminate the target area. The reflector 40 is positioned around the light-emitting element 30, allowing the light emitted by the light-emitting element 30 to directly enter the reflector 40 and be effectively guided to the light-emitting port 150, avoiding disordered scattering of light during propagation and improving the propagation efficiency of light.

[0041] Furthermore, the reflector 40 and the heat sink 50 are in contact with the end facing the light-emitting element 30 and form a hollow cavity, in which the light-emitting element 30 is disposed.

[0042] In some embodiments, both the front shell 110 and the rear shell 120 are made of plastic.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, the structure is not contradictory, and the purpose of this utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A table lamp, characterized in that, include: The housing assembly (10) includes a front housing (110) and a rear housing (120), which together enclose a receiving cavity (130). The front housing (110) is provided with an annular baffle (140), which encloses a light outlet (150). The annular baffle (140) has a first end (141) near the light outlet (150) and a second end (142) away from the light outlet (150). The inner surface of the first end (141) is recessed along the annular baffle (140). The rear shell (120) has a plurality of first grooves (143) spaced apart circumferentially. The inner surface of the second end (142) extends toward the rear shell (120) to form an annular mounting portion (160). The annular mounting portion (160) surrounds and forms an mounting space (161). The inner surface of the annular mounting portion (160) is recessed with a plurality of second grooves (162) spaced apart circumferentially. The plurality of second grooves (162) are connected to the plurality of first grooves (143). The rear shell (120) has a heat dissipation vent (730). A light-transmitting element (20) is disposed within the installation space (161) and together with the plurality of first grooves (143) and the plurality of second grooves (162) forms a plurality of first heat dissipation channels (710); The light-emitting element (30) is disposed in the receiving cavity (130) and located on the side of the light-transmitting element (20) away from the annular baffle (140); A reflector (40) is disposed around the light-emitting element (30) and extends into the mounting space (161); A heat sink (50) is disposed in the receiving cavity (130) and located between the light-emitting element (30) and the heat dissipation port (730). A plurality of second heat dissipation channels (720) are formed on the heat sink (50). The plurality of second heat dissipation channels (720) connect the plurality of first heat dissipation channels (710) and the heat dissipation port (730) to form a heat dissipation path together. as well as The lamp holder (60) is connected to the rear housing (120).

2. The desk lamp as described in claim 1, characterized in that, The plurality of first grooves (143) and the plurality of second grooves (162) correspond one-to-one.

3. The desk lamp as described in claim 1, characterized in that, The heat sink (50) includes a main body (510) and a plurality of heat sinks (520) connected to the periphery of the main body (510). The light-emitting element (30) is mounted on the main body (510), and a second heat dissipation channel (720) is formed between each two adjacent heat sinks (520).

4. The desk lamp as described in claim 3, characterized in that, At least one of the heat sinks (520) is provided with a fixing hole (521) for a bolt to pass through.

5. The desk lamp as described in claim 3, characterized in that, The plurality of heat sinks (520) are arranged radially from the center of the body (510) to the periphery of the body (510).

6. The desk lamp as described in claim 3, characterized in that, The main body (510) has a hollow structure.

7. The desk lamp as described in claim 1, characterized in that, The rear shell (120) has an opening (121) communicating with the receiving cavity (130). A fixing plate (170) is provided in the opening (121). The opening (121) and the fixing plate (170) are spaced apart to form the heat dissipation vent (730). The fixing plate (170) is connected to the lamp holder (60).

8. The desk lamp as described in claim 1, characterized in that, The inner surface of the annular mounting part (160) is recessed with a mounting recess (163), and the reflector (40) is protruded with a mounting boss (410) that matches the mounting recess (163).

9. The desk lamp as described in claim 1, characterized in that, The reflector (40) has a cup-shaped structure and has a light-incident end (420) and a light-emitting end (430) opposite to the light-incident end (420). The inner diameter of the reflector (40) gradually increases from the light-incident end (420) toward the light-emitting end (430). The light-incident end (420) is disposed toward the light-emitting element (30), and the light-emitting end (430) is disposed toward the light-emitting port (150).

10. The table lamp as described in any one of claims 1-9, characterized in that, Both the front shell (110) and the rear shell (120) are made of plastic.

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