WO2022001719A1

WO2022001719A1 - Table lamp

Info

Publication number: WO2022001719A1
Application number: PCT/CN2021/101195
Authority: WO
Inventors: 隋中华; 王跃平; 王耀海
Original assignee: 苏州欧普照明有限公司; 欧普照明股份有限公司
Priority date: 2020-06-30
Filing date: 2021-06-21
Publication date: 2022-01-06

Abstract

A table lamp, comprising a base (1); a lamp rod (2), one end of the lamp rod (2) being assembled on the base (1); and a lamp head (3), the lamp head (3) comprising a housing (31), a light source (32) and a shade (33). The housing (31) is mounted at the other end of the lamp rod (2). The shade (33) is connected to the housing (31), the shade and the housing forming an accommodating cavity in an enclosed manner. The light source (32) is mounted in the accommodating cavity. The housing (31) is provided with a first air hole (311), and the shade (33) is provided with a second air hole (331), the first air hole (311) and the second air hole (331) both being in communication with the accommodating cavity. The problem that, at present, the heat dissipation performance of a light source assembly in a table lamp is poor, resulting in a reduction in the service lives of the light source assembly and the table lamp can thus be solved.

Description

desk lamp

technical field

The present invention relates to the technical field of lighting equipment, in particular to a desk lamp.

Background technique

The desk lamp can provide better lighting effects during the user's study and work, and is easy to move. During the working process of the table lamp, the light source assembly will generate a certain amount of heat. If the heat generated by the light source cannot be dissipated in time, it will adversely affect the continued use of the light source assembly and shorten the service life of the light source assembly and the lamp.

SUMMARY OF THE INVENTION

The invention discloses a lamp to solve the problem that the heat dissipation performance of the light source assembly in the current desk lamp is poor, which leads to the shortening of the service life of the light source assembly and the desk lamp.

In order to solve the above problems, the present invention adopts the following technical solutions:

A desk lamp comprising:

base;

a light pole, one end of the light pole is assembled on the base;

A lamp cap, the lamp cap includes a housing, a light source and a mask, the housing is mounted on the other end of the light pole, the mask is connected with the housing and encloses a accommodating cavity, the light source is mounted on the The housing is provided with a first ventilation hole, the mask is provided with a second ventilation hole, and both the first ventilation hole and the second ventilation hole are communicated with the accommodation cavity.

The technical scheme adopted in the present invention can achieve the following beneficial effects:

In the table lamp disclosed in the embodiment of the present invention, the lamp cap includes a housing, a light source and a mask, the housing is mounted on the base through a light pole, the mask is connected with the housing to form a accommodating cavity for installing the light source, and the housing is provided with a first ventilation hole , the mask is provided with a second ventilation hole, and the first ventilation hole communicates with the second ventilation hole through the accommodating cavity, which enables the gas outside the table lamp to enter and exit the accommodating cavity through the second ventilation hole and the first ventilation hole, and the gas enters and exits the accommodating cavity. During the process of the cavity, the heat generated by the operation of the light source can be taken out of the accommodating cavity, thereby improving the overall heat dissipation efficiency of the desk lamp and ensuring that the desk lamp has a long service life.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of a desk lamp disclosed in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the table lamp disclosed in the embodiment of the present invention in another direction;

3 is an exploded schematic diagram of a part of the structure of the table lamp disclosed in the embodiment of the present invention;

4 is a schematic cross-sectional view of a partial structure of a table lamp disclosed in an embodiment of the present invention;

5 is an exploded schematic diagram of a lamp post, a connecting rod and a rotating shaft in a desk lamp disclosed in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a first limiting portion and a second limiting portion in the middle rotating shaft of the desk lamp disclosed in an embodiment of the present invention when they limit each other;

7 is a schematic structural diagram in another direction when the first limiting portion and the second limiting portion of the intermediate rotating shaft of the desk lamp according to the embodiment of the present invention limit each other.

Description of reference numbers:

1- base,

2-light pole,

3-lamp head, 31-shell, 311-first ventilation hole, 312-shell body, 313-connecting rod, 32-light source, 321-substrate, 322-illuminator, 33-mask, 331-second ventilation hole, 332-installation hole, 333-cover, 334-outer edge, 34-deflector, 35-control module,

4- heat sink, 41- heat sink body, 42- heat sink,

5- light distribution lens,

61-reflector cup, 62-fixed part,

7-wire,

8-rotating shaft, 81-first fixing piece, 82-second fixing piece, 83-connecting piece, 84-first limiting part, 85-second limiting part.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solutions disclosed by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1-FIG. 7, an embodiment of the present invention discloses a table lamp, which includes a base 1, a lamp post 2 and a lamp cap 3, the base 1 is the installation base structure and support structure of the entire desk lamp, the lamp pole 2 and the lamp cap 3 are both It can be directly or indirectly installed on the base 1 to form the whole table lamp.

Among them, the base 1 can be made of hard materials such as metal or plastic to ensure that the base 1 can provide a stable support effect for the entire table lamp, the base 1 can be a rectangular structure or a circular structure, and the size of the base 1 in each direction is also It can be determined according to actual needs, which is not limited here.

The light pole 2 can also be made of materials such as metal or plastic, and the light pole 2 can be a single-section cylindrical rod-like structure, or the light pole 2 can also be a multi-section structure. One end of the light pole 2 is assembled on the base 1. Optionally, a fixed connection relationship can be formed between the light pole 2 and the base 1 by welding or the like, or a hinged relationship can be formed between the two by means of a bolt assembly, so that the The light pole 2 and the base 1 can rotate with each other, so that the orientation of the lamp cap 3 installed on the other end of the light pole 2 can be adjusted. Alternatively, the light pole 2 and the base 1 can also be connected to each other by means of ball hinge, which can further improve the range and amplitude of relative rotation between the light pole 2 and the base 1 , thereby further improving the lighting effect of the lamp head 3 .

In addition, the light pole 2 can be a hollow structural member, in this case, the wire 7 connected with the lamp cap 3 can be installed in the light pole 2 to prevent the wire from being exposed and improve the safety of the whole desk lamp.

The lamp head 3 includes a casing 31, a light source 32 and a mask 33, wherein the casing 31 is installed on the end of the light pole 2 away from the base 1, and the casing 31 can be made of a material with relatively large structural strength to ensure that the casing 31 The light source 32 and the face shield 33 can be provided with a stable support effect and a protection effect, and the service life of the lamp head 3 can be improved. For example, the casing 31 can be made of a metal material, which also enables the casing 31 to have better heat conduction and heat dissipation effects, so that the heat dissipation efficiency of the lamp cap 3 is relatively high.

The light source 32 can be an LED lamp bead or an LED patch, etc. The light source 32 can be connected to an external power supply through the wire 7 so as to be lit when powered on. Optionally, the light source 32 is fixed on the housing 31 or the mask 33 , and by making the light source 32 face the mask 33 , the light source 32 emits light in the direction where the mask 33 is located. In addition, a control module 35 may also be provided on the lamp head 3 to provide a control function for the desk lamp and ensure that the desk lamp has better controlled performance and safety performance.

The mask 33 is connected to the housing 31 and encloses an accommodating cavity. The light source 32 is installed in the accommodating cavity, so that the mask 33 and the housing 31 can provide better protection for the light source 32, and can also prevent the user from accidentally touching the light source 32. There may be burns or even electric shocks. Specifically, the shape of the mask 33 and the shape of the housing 31 can correspond to each other, which makes the integrity of the sealed cavity formed by the two better, so that the safety of the entire desk lamp can be further improved. The mask can be formed of a light-transmitting material such as plastic, so as to ensure that the light emitted by the light source 32 installed in the accommodating cavity can pass through the mask 33 and pass out of the desk lamp. The face shield 33 and the housing 31 can be fixedly connected by means of bonding, or can also be detachably fixed by using a snap connection or a screw connection, so as to facilitate the subsequent maintenance and repair of the desk lamp.

In addition, the housing 31 is provided with a first ventilation hole 311, and the mask 33 is provided with a second ventilation hole 331. Specifically, the first ventilation hole 311 can be set at any position of the housing 31, and the second ventilation hole 331 can also be Arranged at any position on the mask 33, the respective shapes, sizes and numbers of the first ventilation holes 311 and the second ventilation holes 331 can be determined according to actual needs, which are not limited here. By making both the first vent hole 311 and the second vent hole 331 communicate with the accommodating cavity, the entire inner space of the lamp cap 3, that is, the accommodating cavity can communicate with the space outside the lamp cap 3, so that the gas can be in the accommodating cavity Gas exchange with the outside of the containment chamber.

In the table lamp disclosed in the embodiment of the present invention, the lamp cap includes a housing 31, a light source 32 and a mask 33. The housing 31 is mounted on the base 1 through the lamp post 2, and the mask 33 is connected with the housing 31 to form a accommodating cavity for installing the light source 32. The housing 31 is provided with a first ventilation hole 311, and the mask 33 is provided with a second ventilation hole 331. The first ventilation hole 311 communicates with the second ventilation hole 331 through the accommodating cavity, which enables the gas outside the lamp to pass through the second ventilation hole 331. The ventilation holes 331 and the first ventilation holes 311 enter and exit the accommodating cavity. During the process of gas entering and exiting the accommodating cavity, the heat generated by the operation of the light source 32 can be taken out of the accommodating cavity, thereby improving the overall heat dissipation efficiency of the table lamp and ensuring that the table lamp has a relatively high temperature. Long service life.

Optionally, the light pole 2 is inclined relative to the height direction of the desk lamp. In this case, the irradiation area of the lamp head 3 can be enlarged, and the existence of the light pole 2 can be prevented as much as possible from blocking the pipeline emitted by the light source 32 . Of course, as mentioned above, the angle between the light pole 2 and the base 1 can be adjusted, so that the user can flexibly adjust the angle between the light pole 2 and the base 1 according to the actual factors such as the placement position of the desk lamp and usage requirements. , to improve the user experience of the desk lamp.

Optionally, the first ventilation hole 311 and the second ventilation hole 331 are arranged along the height direction of the desk lamp, that is, in the process of designing the first ventilation hole 311 and the second ventilation hole 331, the first ventilation hole 311 There is a certain height difference between it and the second ventilation hole 331. Since the air pressure between areas with different heights is also different, during the use of the desk lamp, the air can be automatically passed from the second ventilation hole 331 by the action of the external air pressure. Enter the accommodating cavity, and the gas in the accommodating cavity is discharged from the first ventilation hole 311, which can further improve the heat dissipation efficiency of the desk lamp; and, since the gas entering the accommodating cavity from the second ventilation hole 331 will absorb the heat generated by the light source, thus The temperature of the gas discharged from the first ventilation hole 311 is also relatively high, and the pressure of the gas with high temperature is generally low. The lamp head 3 produces a certain suction effect, thereby promoting the outside air to enter the accommodating cavity from the second ventilation hole 311, which can further promote the exchange efficiency between the gas in the accommodating cavity and the gas outside the accommodating cavity, and further improve the heat dissipation efficiency of the table lamp .

Based on the above situation, the mask 33 can be located below the casing 31 as a whole. In this case, no matter what the respective positions of the first ventilation holes 311 and the second ventilation holes 331 are, it is basically guaranteed that there is a certain amount of space between them. Height difference; if a part of the mask 33 is not completely located under the shell 31, the position of the first ventilation hole 311 on the shell 31 and the position of the second ventilation hole 331 on the mask 33 can be selected according to the actual situation. It is ensured that there is a certain height difference between the first ventilation hole 311 and the second ventilation hole 331 .

Further, the first ventilation hole 311 can be located at the end of the housing 31 that faces away from the mask 33 in the height direction of the desk lamp. Under the circumstance that the design of the first ventilation hole 311 adopts the above technical solution, no matter where the second ventilation hole 331 is located in the mask 33 It can basically ensure that the height of the first ventilation hole 311 is higher than that of the second ventilation hole 331, so as to ensure that there is always a certain height difference between the two, so that the gas can automatically and Flow outside, so that the heat generated by the light source 32 in the accommodating cavity is carried away from the accommodating cavity, ensuring that the temperature in the environment where the light source 32 is located is low, and improving the service life of the light source 32 and the entire desk lamp.

Alternatively, the second ventilation hole 331 can be located at the end of the mask 33 that is away from the housing 31 in the height direction of the desk lamp. In the case where the second ventilation hole 331 adopts the above technical solution, it can also be ensured that the second ventilation hole 331 can be located at the first Below the ventilation hole 311 .

Optionally, the first ventilation hole 311 and the second ventilation hole 331 are arranged opposite (or opposite), that is to say, the first ventilation hole 311 can be arranged at the end of the housing 31 that faces away from the mask 33 in the height direction of the desk lamp, And the second ventilation hole 331 is disposed at one end of the face cover 33 that is away from the housing 31 in the height direction of the desk lamp. In layman's terms, the first ventilation hole 311 may be arranged at the top of the lamp cap 3 , and the second ventilation hole 331 may be arranged at the bottom of the lamp cap 3 .

In the case of adopting the above technical solution, the height difference between the first ventilation hole 311 and the second ventilation hole 331 can be maximized under the condition that the size of the desk lamp remains unchanged, thereby maximizing the flow of gas inside and outside the accommodating cavity Moreover, even if the lamp cap 3 is in a certain inclined state, it can basically be ensured that there is still a height difference between the first ventilation hole 311 and the second ventilation hole 331 .

Further, the light source 32 can extend to the side wall of the accommodating cavity. In this case, a through hole can be opened on the light source 32, especially the substrate 321 of the light source 32, which can also ensure that the gas can be ventilated in the second Flow between the holes 331 and the first ventilation holes 311 .

Preferably, the size of the light source 32 can be made smaller than the size of the accommodating cavity, so that a gap is formed between the light source 32 and the side wall of the accommodating cavity to ensure that the gas can flow between the second ventilation hole 331 and the first ventilation hole 311 , and in the case of using the above technical solution, the gas can flow from any direction of the light source 32 on the opposite sides of the light source 32, which makes the heat dissipation effect at any position on the light source 32 relatively good and relatively average, This further ensures that the light source 32 has a relatively long service life.

Further, an installation hole 332 may be opened on the face cover 33 , the light source 32 may be disposed toward the installation hole 332 , the desk lamp further includes a light distribution lens 5 , the light source 32 may be a point light source, and the light distribution lens 5 is disposed on the light emitting surface of the light source 32 , and the light distribution lens 5 can be installed in the installation hole 332, on the one hand, it can provide better protection and isolation for the light source 32, and on the other hand, the light distribution lens 5 can be used to distribute the light for the light source 32, so that the uniformity of the light source 32 can be improved. and lighting effects are relatively high. Specifically, the shape and size of the light distribution lens 5 can be the same as those of the installation hole 332, so that the matching relationship between the light distribution lens 5 and the installation hole 332 is relatively close, and the light distribution lens 5 can be fixed on the Mounting hole 332. Optionally, the surface of the light distribution lens 5 is provided with at least one anti-glare edge, so that after the light emitted by the light source 32 passes through the light distribution lens 5, the emitted light is softer and does not produce strong glare, which further improves the performance of the light distribution lens 5. The lighting effect of the desk lamp.

Optionally, the desk lamp further includes a heat dissipation part 4, the heat dissipation part 4 includes a heat dissipation body 41 and a heat dissipation fin 42, and the light source 32 is attached to the heat dissipation body 41, so that the heat generated by the operation of the light source 32 can be transferred to the heat dissipation body 41 first, preventing the heat dissipation. The heat is accumulated on the light source 32, and the heat generated by the light 32 is transferred by the heat dissipation body 41, so as to ensure that the real-time temperature of the light source 32 is relatively low. The heat sink 42 is connected to the outer circumference of the heat dissipation body 41, and the heat sink 42 is located between the light source 32 and the housing 31. On the one hand, the heat sink 42 can further transfer the heat of the light source 32 and the heat sink body 41, and on the other hand, the heat sink 42 The overall heat dissipation area of the heat dissipation part 4 can be increased, so that the heat on the heat dissipation body 41 and the heat dissipation fins 42 can be diffused more quickly and thoroughly between the housing 31 and the mask 33, that is, in the accommodating cavity, and then with the gas. The first vent hole 311 and the second vent hole 331 are emitted from the accommodating cavity to the outside of the accommodating cavity to prevent heat from accumulating in the light source 32 and the accommodating cavity.

Specifically, the heat dissipation part 4 can be made of a material with good thermal conductivity such as metal or graphite. The shape and size of the heat dissipation body 41 can be selected according to the space in the accommodating cavity. Optionally, the heat dissipation part 4 can be made of a metal material. It is formed by die casting, thereby forming the interconnected heat dissipation body 41 and the heat dissipation fins together, which makes the connection reliability between the heat dissipation body 41 and the heat dissipation fins 42 relatively high, and further ensures the connection between the heat dissipation body 41 and the heat dissipation fins 42. Has high thermal conductivity. Wherein, the light source 32 can be fixed on the heat dissipation body 41 by means of thermal conductive glue, which can prevent the light source 32 and the heat dissipation body 41 from being connected to each other while ensuring a high fixed connection effect and heat conduction effect between the light source 32 and the heat dissipation body 41. , to improve the safety performance of the lamp. More specifically, the light source 32 and the heat sink 42 can be located on two adjacent surfaces of the heat dissipation body 41, respectively, so as to prevent the light source 32 and the heat sink 42 from interfering with each other.

Further, there can be a plurality of heat sinks 42 to further increase the overall heat dissipation area of the heat dissipation portion 4 and improve the heat dissipation efficiency of the heat dissipation portion 4; The two radiating fins 42 flow between the two radiating fins 42, so as to take away the heat on the radiating fins 42. The plurality of radiating fins 42 are arranged at intervals around the radiating body 41, which can also reduce the size of the space occupied by the plurality of radiating fins 42.

More specifically, the shapes and sizes of the plurality of radiating fins 42 can be correspondingly the same, and the angle between any two adjacent radiating fins 42 can be equal to each other, so that the heat dissipation at any position on the heat dissipation part 4 can be improved. The efficiency is basically the same, and the overall heat dissipation performance of the heat dissipation part 4 is improved.

Further, the heat sink 42 can be made parallel to the height direction of the desk lamp, and further, during the use of the desk lamp, during the process of gas flowing between the first vent hole 311 and the second vent hole 331, the heat sink 42 will not substantially Obstructing the flow path of the gas to ensure that the gas can flow relatively smoothly inside and outside the accommodating cavity, and, in the case of using the above technical solution, the gas flowing between the first ventilation hole 311 and the second ventilation hole 331 can pass through the surface of each heat sink 42, so that the heat dissipation efficiency of the heat sink 42 can be further improved.

Further, the mask 33 includes a cover body 333 and an outer edge 334, the cover body 333 is arranged towards the light source 32, and the outer edge 334 is arranged around the cover body 333. In the case of adopting the above technical solution, the cover body 333 and the outer edge 334 can both be light sources 32 provides a better protection effect, the outer edge 334 is arranged around the cover body 333, and the outer edge 334 is located on the side of the cover body 333 facing the shell 31, so that the outer edge 334, the cover body 333 and the shell 31 can be enclosed to accommodate The cavity provides a better protection effect for the light source 32, and the second ventilation hole 331 is located between the cover body 333 and the outer edge 334, since the cover body 333 is arranged toward the light source 32, so that the second ventilation hole 331 is located in the light source. The outer circumference of the light source 32 is further improved, so that the gas entering or exiting the accommodating cavity from the second ventilation hole 331 has a better matching relationship with the light source 32 , and the gas can take away more heat from the light source 32 .

Specifically, the cover body 333 and the outer edge 334 can be separately installed on the casing 31 , in this case, the second ventilation hole 331 is a hole of the annular structure. Alternatively, the cover body 333 and the outer edge 334 can be connected to each other by connecting strips or connecting plates, so that the mask 33 is an integral structure, which makes the connection between the mask 33 and the shell 31 relatively less difficult. In this case, structures such as connecting strips or connecting plates can separate the space between the cover body 333 and the outer edge 334 into a plurality of holes separated from each other, the plurality of holes are all the second ventilation holes 331, and the sizes of the plurality of holes can be the same. , can also be different.

Optionally, the cover body 333 and the outer edge 334 are connected by the guide plate 34, so that the cover body 333 and the outer edge 334 are connected as a whole. space, restricting the use conditions of the desk lamp, and when the deflector 34 is located outside the accommodating cavity, the deflector 34 may scratch the user. The deflector 34 can be a plate-like structure, and its size can be determined according to parameters such as the size of the interval between the cover body 333 and the outer edge 334. The cover body 333, the outer edge 334 and the deflector 34 can all be made of plastic. , and the cover body 333 and the outer edge 334 can be connected into one by means of the baffle 34 by means of hot melting. In order to improve the connection reliability between the cover body 333 and the outer edge 334, the number of the baffles 34 can be as large as A plurality of air guide plates 34 are arranged around the cover body 333 , and the angle of the interval between any two adjacent air guide plates 34 can be equal.

In addition, the deflector 34 can be made parallel to the axial direction of the second ventilation hole 331. In this case, the deflector 34 can not only be used as a connecting structure between the cover body 333 and the outer edge 334, but also can be used in the second ventilation hole 331. The gas flowing between the first ventilation hole 311 and the second ventilation hole 331 provides a guiding effect, thereby further improving the efficiency and smoothness of the gas flowing between the first ventilation hole 311 and the second ventilation hole 331 .

Optionally, the number of the first ventilation holes 311 is multiple, so as to increase the efficiency of gas exchange between the lamp cap 3 and the outside world, and by making the plurality of first ventilation holes 311 emit radially, so that the plurality of first ventilation holes The distribution of 311 is relatively uniform, so that the gas everywhere in the accommodating cavity can be exchanged with the outside world, and the heat exchange process of the lamp cap 3 is relatively thorough. More specifically, each of the plurality of first ventilation holes 311 may have a linear long-hole structure, and the plurality of first ventilation holes 311 all extend from the central area of the housing 31 to the edge, which can form a radial injection. The plurality of first ventilation holes 311 .

In the case that the number of the first ventilation holes 311 is multiple, in order to further improve the efficiency of gas exchange inside and outside the accommodating cavity, in the case that the number of the second ventilation holes 331 is one or a small number, the first ventilation hole 331 can be The size of the second ventilation holes 331 is relatively large to ensure that the gas has a larger flow rate. Alternatively, the number of the second ventilation holes 331 can also be larger, and the plurality of second ventilation holes 331 can be evenly distributed on the mask 33. This can also ensure that the heat exchange process in all parts of the lamp cap 3 is relatively thorough.

As mentioned above, the light source 32 may be a point light source 32. In order to further improve the lighting effect of the light source 32, optionally, the desk lamp disclosed in the embodiment of the present invention may further include a reflector cup 61, the reflector cup 61 is a flared structure, and the light source 32 It is installed at one end of the reflector cup 61 , and the other end of the reflector cup 61 faces the mask 33 , thereby further expanding the irradiation area of the light source 32 with the help of the reflector cup 61 , and further improving the illumination uniformity of the light source 32 . The reflection cup 61 may be made of plastic, and the inner surface or the outer surface of the reflection cup 61 is coated with a reflection coating to provide reflection for light. The reflector cup 61 may be attached to the housing 31 by means of bolts or the like, and in the case where the above-mentioned heat dissipation portion 4 is included in the desk lamp, the reflector cup 61 may also be fixed to the heat dissipation portion 4 .

The light source 32 may include a substrate 321 and a luminous body 322. The luminous body 322 is disposed on one side of the substrate 321, and the substrate 321 can be connected to a power supply through the wire 7, so that the luminous body 322 is lit. The end of the reflector cup 61 facing away from the mask 33 is provided with a fixing portion 62, the fixing portion 62 has an installation cavity, the light source 32 is arranged in the installation cavity, and along the direction perpendicular to the height direction, the base plate 321 is limited and matched with the fixing portion 62, which makes the light source The fixed connection relationship with the reflector cup 61 is relatively stable, and the installation difficulty of the light source 32 can be reduced to a certain extent. In addition, the shape and size of the fixing portion 62 can be determined according to the base plate 321 of the light source 32 , so as to ensure that the fixing portion 62 can provide a better position limit function for the base plate 321 .

As mentioned above, the light pole 2 and the base 1 can be connected to each other in a hinged manner, so as to improve the illumination range of the desk lamp and improve the user experience. Further, the housing 31 may include a housing body 312 and a connecting rod 313 , and the housing body 312 is fixedly connected with the connecting rod 313 . The table lamp disclosed in the embodiment of the present invention further includes a rotating shaft 8 , and the connecting rod 313 and the light pole 2 are pivotally connected through the rotating shaft 8 , in this case, the connecting rod 313 and the lamp post 2 can be rotated relatively, so that the lamp post 2 and the lamp holder 3 can also be rotated relative to each other, so that during the use of the desk lamp, not only can the lamp post 2 be rotated In this way, the orientation of the lamp cap 3 can be changed, and the orientation of the lamp cap 3 can also be changed by rotating the lamp cap 3, so that the selection range of the orientation of the lamp cap 3 is larger, and the user experience of the desk lamp is further improved.

Specifically, the shell body 312 and the connecting rod 313 may be formed by integral molding, so that the connection reliability between the shell body 312 and the connecting rod 313 is high. In the case where the connecting rod 313 is provided, the light rod 2 and the housing body 312 are less likely to interfere with each other, so that the rotation range between the light head 3 and the light rod 2 is relatively large. The rotating shaft 8 can be a common structural member with hinged function such as a bearing, and the type selection can be determined according to actual needs.

Optionally, as shown in FIG. 5 , FIG. 6 and FIG. 7 , the rotating shaft 8 may include a first fixing member 81 , a second fixing member 82 and a connecting member 83 , and the first fixing member 81 and the connecting rod 313 surround the connecting member 83 . The second fixing member 82 is matched with the upper limit of the circumferential direction of the connecting member 83 around the connecting member 83, so that the first fixing member 81 and the connecting rod 313 are relatively rotated in the process of relative rotation The second fixing member 82 can also rotate synchronously, and vice versa, because the first fixing member 81 and the connecting rod 313 are mutually limited, the second fixing member 82 and the light pole 2 are mutually limited, and the first fixing member 81 and the second fixing member 81 are mutually limited. During the relative rotation of the fixing member 82, the light pole 2 and the connecting rod 313 can also rotate relative to each other.

Specifically, various ways can be used to make the first fixing member 81 and the connecting rod 313 and the second fixing member 82 and the light rod 2 to form a limit matching relationship in the circumferential direction of the connecting member 83 . Taking the first fixing member 81 and the connecting rod 313 as an example, the connecting rod 313 may be formed with a through hole, and the first fixing member 81 is inserted into the through hole of the connecting rod 313 . A limit structure such as a position block or a limit pin is provided, and a matching structure such as a limit groove or a limit hole is arranged in the through hole of the connecting rod 313, so that the aforementioned limit structure extends into the aforementioned matching structure, so that the first A fixing member 81 and the connecting rod 313 form a stable limit matching relationship in the circumferential direction of the connecting member 83 , and the limiting relationship between the second fixing member 82 and the light pole 2 can be formed in a manner similar to or the same as the above embodiment.

In addition, the connecting piece 83 passes through the second fixing piece 82 and is threadedly connected with the first fixing piece 81 , so that the light pole 2 and the connecting rod 313 have friction damping. Under the condition that the connecting member and the first fixing member 81 are locked to each other, the gap between the light pole 2 and the connecting rod 313 is relatively small, and even the two may be pressed against each other, so that the light pole 2 and the connecting rod 313 may be pressed against each other. Friction damping can be formed between the rods 313 , so that relative rotation between the light rod 2 and the connecting rod 313 basically does not occur under the action of external force, so as to ensure that the desk lamp can provide stable lighting effects.

In order to limit the relative rotation angle between the lamp head 3 and the lamp pole 2, in the above-mentioned embodiment, in the rotating shaft 8 of the table lamp, the first fixing member 81 is provided with a first limiting portion 84, and the second fixing member 82 is provided with a second limiting portion In the circumferential direction around the connecting member 83, the first limiting portion 84 and the second limiting portion 85 rotate relative to each other between 0° and 180°, so as to ensure that there is no excessive between the lamp cap 3 and the lamp post 2. turning situation.

More specifically, in the circumferential direction of the connecting piece 83 , the sum of the angles around which the first limiting portion 84 and the second limiting portion 85 are bypassed can be 180°. The maximum angle of relative rotation is 180°.

Optionally, the structure on the first fixing member 81 for mutual restraint with the connecting rod 313 may also be the above-mentioned first limiting portion 84. In this case, a through hole is formed on the connecting rod 313, and the connecting rod 313 is The structure of the through hole cooperates with the first limiting portion 84, so that after the first limiting portion 84 extends into the through hole, it can mutually limit the hole wall of the through hole, so that the first fixing member 81 is connected to the The rods 313 form a mutual limiting relationship. Moreover, by making a part of the first limiting part 84 protrude from one side of the through hole to the other side of the through hole, that is, a part of the first limiting part 84 is located outside the through hole of the connecting rod 313 , And it is located on the side of the connecting rod 313 facing the light pole 2 so as to cooperate with the second fixing member 82 .

Similarly, the second limiting portion 85 on the second fixing member 82 can also be set by adopting the implementations given in the above-mentioned embodiments. The other part of the second limiting portion 85 protrudes out of the through hole of the light pole 2, and is located between the light pole 2 and the connecting rod 313. so as to cooperate with the first limiting portion 84 .

The above embodiments of the present invention mainly describe the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form better embodiments. No longer.

The above descriptions are merely embodiments of the present invention, and are not intended to limit the present invention. Various modifications and variations of the present invention are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

A desk lamp comprising:

base(1);

a light pole (2), one end of the light pole (2) is assembled on the base (1);

A lamp cap (3), the lamp cap (3) comprises a casing (31), a light source (32) and a face shield (33), the casing (31) is mounted on the other end of the lamp pole (2), the The mask (33) is connected with the casing (31) and encloses a accommodating cavity, the light source (32) is installed in the accommodating cavity, and the casing (31) is provided with a first ventilation hole (311), The mask (33) is provided with a second ventilation hole (331), and both the first ventilation hole (311) and the second ventilation hole (331) communicate with the accommodating cavity.
The desk lamp according to claim 1, wherein the first ventilation hole (311) is located at an end of the housing (31) facing away from the face shield (33) in the height direction of the desk lamp, and/or the The second ventilation hole (331) is located at the end of the face shield (33) facing away from the housing (31) in the height direction of the desk lamp.
The desk lamp according to claim 1, wherein the desk lamp further comprises a heat dissipation part (4), the heat dissipation part (4) comprises a heat dissipation body (41) and a heat dissipation fin (42), and the light source (32) is attached In the heat dissipation body (41), the heat dissipation fin (42) is connected to the outer periphery of the heat dissipation body (41), and the heat dissipation fin (42) is located between the light source (32) and the housing (31) between.
The desk lamp according to claim 3, wherein the number of the heat dissipation fins (42) is plural, and the plurality of the heat dissipation fins (42) are arranged at intervals around the heat dissipation body (41).
The desk lamp according to claim 1, wherein the face shield (33) comprises a cover body (333) and an outer edge (334), the cover body (333) is disposed toward the light source (32), and the outer edge (334) is arranged around the cover body (333), and the second ventilation hole (331) is located between the cover body (333) and the outer edge (334).
The desk lamp according to claim 5, wherein the cover (333) and the outer edge (334) are connected by a deflector (34), and the deflector (34) is arranged in the accommodating cavity , and the guide plate (34) is parallel to the axial direction of the second ventilation hole (331).
The desk lamp according to claim 1, wherein the number of the first ventilation holes (311) is plural, and the plurality of the first ventilation holes (311) are emitted radially.
The desk lamp according to claim 1, wherein the casing (31) comprises a casing body (312) and a connecting rod (313), and the casing body (312) is fixedly connected with the connecting rod (313), so The desk lamp further comprises a rotating shaft (8), and the connecting rod (313) and the light pole (2) are pivotally connected through the rotating shaft (8).
The desk lamp according to claim 8, wherein the rotating shaft (8) comprises a first fixing member (81), a second fixing member (82) and a connecting member (83), and the first fixing member (81) is connected to The connecting rod (313) is matched at the upper limit in the circumferential direction around the connecting piece (83), and the second fixing piece (82) and the light pole (2) are at a position surrounding the connecting piece (83). Circumferential upper limit fit, the connecting piece (83) passes through the first fixing piece (81) and is threadedly connected with the second fixing piece (82), so that the light pole (2) and the The connecting rod (313) has friction damping;

The first fixing member (81) is provided with a first limiting portion (84), and the second fixing member (82) is provided with a second limiting portion (85). In the circumferential direction, the first limiting portion (84) and the second limiting portion (85) rotate relatively between 0° and 180°.
The desk lamp according to claim 1, wherein the light pole (2) is inclined relative to the height direction of the desk lamp.