CN220851826U

CN220851826U - Desk lamp

Info

Publication number: CN220851826U
Application number: CN202322725907.1U
Authority: CN
Inventors: 叶保玉
Original assignee: Shenzhen Nexol Lighting Technology Co ltd
Current assignee: Shenzhen Nexol Lighting Technology Co ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-04-26
Anticipated expiration: 2033-10-10

Abstract

The technical scheme of the utility model discloses a desk lamp, which comprises a lamp holder, wherein the lamp holder comprises a lamp shell, a luminous component and an annular lens, and the lamp shell is provided with an installation cavity; the light-emitting component comprises a circuit board arranged in the mounting cavity and a plurality of lamp beads, and the lamp beads are arranged on the lower side surface of the circuit board at intervals; the annular lens is arranged at the cavity opening of the mounting cavity and is positioned below the lamp bead, the upper side surface of the annular lens is provided with a first light guide ring groove, and the lamp bead at least partially stretches into the first light guide ring groove; the first light guide ring groove is provided with a first side wall surface far away from the center of the lamp shell, the first side wall surface is configured into an inward concave cambered surface, the lower side surface of the annular lens comprises an outward convex cambered surface section, the outward convex cambered surface section is arranged on one side, far away from the center of the lamp shell, of the first light guide ring groove, and the curvature of the outward convex cambered surface section is larger than that of the first side wall surface. According to the technical scheme, the change of the light emergent angle of the transmitted light is larger, so that the radiation angle of the transmitted light of the desk lamp is increased, and the irradiation range of the desk lamp is enlarged.

Description

Desk lamp

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to a desk lamp.

Background

The structure of traditional desk lamp generally includes light source, lamp shade and diffusion cover, and the light source sets up in the lamp shade, and the diffusion cover sets up in the bottom of lamp shade, and the light that the light source sent is gone out through the diffusion cover transmission to realize the illumination. Most of the existing desk lamps on the market use LED lamps as light sources, but because the light radiation angle of the LED lamps is smaller, the irradiation angle of the light sources after being transmitted out through the diffusion cover is also smaller, so that the irradiation range of the desk lamp is limited.

Disclosure of utility model

The utility model mainly aims to provide a table lamp, which aims to enlarge the irradiation range of the table lamp.

The technical scheme of the utility model provides a table lamp, which comprises a lamp holder, wherein the lamp holder comprises:

A lamp housing provided with a mounting cavity;

The light-emitting assembly comprises a circuit board arranged in the mounting cavity and a plurality of lamp beads, and the lamp beads are arranged on the lower side surface of the circuit board at intervals; and

The annular lens is arranged at the cavity opening of the mounting cavity and is positioned below the lamp bead, a first light guide ring groove is formed in the upper side surface of the annular lens, and the lamp bead at least partially stretches into the first light guide ring groove; the first light guide ring groove is provided with a first side wall surface far away from the center of the lamp housing, the first side wall surface is configured into an inward concave cambered surface, the lower side surface of the annular lens comprises an outward convex cambered surface section, the outward convex cambered surface section is arranged on one side, far away from the center of the lamp housing, of the first light guide ring groove, and the curvature of the outward convex cambered surface section is larger than that of the first side wall surface.

In an embodiment, the center of the convex cambered surface section is located between the convex cambered surface section and the first side wall surface and is close to the first side wall surface.

In an embodiment, the upper side of the annular lens is further provided with a boss, the boss is arranged on one side, far away from the outer convex cambered surface section, of the first light guide ring groove, and the table top of the boss is abutted with the lower side of the circuit board.

In an embodiment, the boss is annular, a plurality of first notch grooves are formed in one side, away from the first light guide ring groove, of the boss, and the first notch grooves are arranged at intervals along the circumferential direction of the boss.

In an embodiment, the lamp cap further comprises a sealing cover, and the sealing cover is arranged at an opening of the mounting cavity; the lower side of the annular lens is provided with an accommodating groove, the lamp cap further comprises a first waterproof rib, and the first waterproof rib is arranged between the boss and the sealing cover and is accommodated in the accommodating groove.

In an embodiment, the lower side surface of the annular lens further comprises a plane section, the plane section is connected with one side of the outer convex cambered surface section, which is close to the first light guide ring groove, and the plane section is arranged in parallel with the lower side surface of the sealing cover;

And/or, one side of the annular lens, which is far away from the outer convex cambered surface section, is provided with a second notch groove, the edge of the sealing cover is contained in the second notch groove, and the lower side surface of the sealing cover is flush with the notch of the second notch groove.

In an embodiment, a second light guiding ring groove is further formed in the upper side surface of the annular lens, and the second light guiding ring groove is arranged between the first light guiding ring groove and the boss.

In an embodiment, the first light guiding ring groove further has a second side wall surface near the center of the lamp housing, the lower end of the second side wall surface is connected to the lower end of the first side wall surface, and the second side wall surface is configured as a concave arc surface.

In an embodiment, a plurality of fastening members are disposed at edges of the upper side surface of the annular lens, and the fastening members are fastened to the inner wall of the mounting cavity, so as to connect the annular lens to the lamp housing.

In an embodiment, the lamp holder further comprises a second waterproof rib, the second waterproof rib is arranged between the fastening piece and the circuit board, a slot is formed in the upper side of the second waterproof rib, an inserting portion is arranged on the inner wall of the mounting cavity in a protruding mode towards the slot, and the inserting portion is inserted into the slot.

According to the technical scheme, the lamp beads at least partially extend into the first light guide ring groove, a part of light rays emitted by the lamp beads are emitted from the outer convex cambered surface section after being incident from the first side wall surface, and the angle of the light rays emitted from the outer convex cambered surface section is increased after the light rays are refracted on the first side wall surface and the outer convex cambered surface section due to the fact that the curvature of the outer convex cambered surface section is larger than that of the first side wall surface, so that the radiation angle of the light rays transmitted by the desk lamp is increased, and the irradiation range of the desk lamp is enlarged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of a desk lamp according to the present utility model;

FIG. 2 is a cross-sectional view of the desk lamp of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic perspective view of the light emitting assembly of FIG. 1;

FIG. 5 is a schematic perspective view of the annular lens of FIG. 1;

FIG. 6 is a cross-sectional view of the annular lens of FIG. 5;

FIG. 7 is a partial enlarged view at B in FIG. 6;

fig. 8 is a schematic diagram of the light propagation path at B in fig. 6.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name
				10	Desk lamp	310	First light guide ring groove
11	Lamp holder	311	First side wall surface
				12	Lamp post	312	A second side wall surface
13	Lamp holder	320	Second light guide ring groove
				100	Lamp shell	330	Convex cambered surface section
110	Plug-in part	340	Plane section
				200	Light emitting assembly	350	Boss
210	Circuit board	360	First notch groove
				220	Lamp bead	370	Second notch groove
300	Annular lens	380	Accommodating groove
				400	Sealing cover	390	Fastening piece
500	First waterproof rib	610	Slot groove
				600	Second waterproof rib

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 7, the present utility model proposes a desk lamp 10, the desk lamp 10 includes a lamp cap 11, the lamp cap 11 includes a lamp housing 100, a light emitting assembly 200 and a ring lens 300, the lamp housing 100 is provided with an installation cavity; the light emitting assembly 200 comprises a circuit board 210 arranged in the mounting cavity and a plurality of lamp beads 220, wherein the lamp beads 220 are arranged on the lower side surface of the circuit board 210 at intervals; the annular lens 300 is arranged at the cavity opening of the mounting cavity and below the lamp bead 220, the upper side surface of the annular lens 300 is provided with a first light guide ring groove 310, and the lamp bead 220 at least partially stretches into the first light guide ring groove 310; the first light guiding ring groove 310 has a first side wall surface 311 far away from the center of the lamp housing 100, the first side wall surface 311 is configured as an indent cambered surface, the lower side surface of the annular lens 300 includes a protruding cambered surface section 330, the protruding cambered surface section 330 is disposed on one side of the first light guiding ring groove 310 far away from the center of the lamp housing 100, and the curvature of the protruding cambered surface section 330 is greater than that of the first side wall surface 311.

Specifically, a desk lamp 10, the desk lamp 10 includes a lamp cap 11, a lamp post 12 and a lamp holder 13, wherein the upper end of the lamp post 12 is connected with the lamp cap 11, the lower end of the lamp post 12 is connected with the lamp holder 13, and the lamp cap 11 is installed on the lamp holder 13 through the lamp post 12. The lamp post 12, the lamp cap 11 and the lamp holder 13 can be fixedly connected, and the lamp post 12 can be detachably connected with the lamp cap 11 and the lamp holder 13 in a magnetic connection, screw connection, clamping connection and other modes. The lamp cap 11 includes a lamp housing 100, the lamp housing 100 being provided with a mounting cavity for mounting the power supply assembly, the light emitting assembly 200, the annular lens 300, and the like with respect to the lamp housing 100. The light emitting assembly 200 includes a circuit board 210 and a plurality of lamp beads 220, and the circuit board 210 may be an assembly circuit board using an FPC or an assembly circuit board using a PCB hard board. The plurality of lamp beads 220 are spaced apart from the lower side of the circuit board 210, and the plurality of lamp beads 220 are integrated on one circuit board 210, so that the lamp beads 220 are conveniently mounted. The annular lens 300 is annular, is arranged at the cavity opening of the mounting cavity, and is arranged at the periphery of the cavity opening of the mounting cavity. The upper side surface of the annular lens 300 is provided with a first light guide ring groove 310, at least part of the lamp beads 220 extend into the first light guide ring groove 310, the first light guide ring groove 310 can be in one-to-one correspondence with a plurality of lamp beads 220, and at least part of one lamp bead 220 extends into one first light guide ring groove 310; the first light guiding ring groove 310 may also extend along the circumferential direction of the annular lens 300, and have an annular shape, and the plurality of lamp beads 220 at least partially extend into one first light guiding ring groove 310. The lamp beads 220 may partially extend into the first light guide ring groove 310, or may extend into the first light guide ring groove 310 entirely.

The first light guide ring groove 310 has a first sidewall surface 311 far from the center of the lamp housing 100 as an incident surface of the light of the lamp bead 220. The first sidewall 311 is configured as a concave arc surface, and the angular range in which light is refracted and reflected at the time of incidence increases, and the range in which light finally passes out from the annular lens 300 increases. The lower side of the annular lens 300 comprises a convex cambered surface section 330, and the convex cambered surface section 330 is arranged in a convex cambered surface manner. The light ray P ₁ enters from the first side wall surface 311, is refracted for the first time by the first side wall surface 311, is refracted for the second time by the outer convex arc surface section 330 along the refraction direction, and finally exits in the exit direction of the light ray P ₃. When the annular lens 300 is not present, the light P ₁ is emitted in the emitting direction of the light P ₂. The outgoing angle of the light ray P ₃ is greater than the outgoing angle of the light ray P ₂, so that after the light ray is refracted by the first side wall surface 311 and the outer convex cambered surface section 330, the outgoing angle of the light ray by the outer convex cambered surface section 330 is increased, so that the radiation angle of the light ray transmitted by the desk lamp 10 is increased, and the irradiation range of the desk lamp 10 is enlarged. Since the curvature of the convex arc section 330 is greater than that of the first side wall 311, the light emergent angle of the transmitted light is changed more greatly, so that the radiation angle of the light transmitted by the desk lamp 10 is increased, and the irradiation range of the desk lamp 10 is enlarged.

In addition, the light source of the conventional desk lamp 10 has the characteristic that the central light intensity decreases sharply to the periphery, and the uniformity of the illumination of the emergent light spots is low, so that the brightness in the field of view of a user is quite uneven. Therefore, the conventional desk lamp 10 is not only easy to cause visual fatigue of the user, but also affects the eyesight of the user after long-term use. The light emitted by the desk lamp 10 is emitted after being refracted and totally reflected by the annular lens 300, so that the characteristic that the emitted light shows that the central light intensity is suddenly decreased to the periphery is weakened. Meanwhile, the annular lens 300 replaces the traditional multiple independent lenses to serve as a light distribution mode, so that the spatial distribution of light is adjusted, light loss caused by the fact that the light passes through an interface for many times is reduced, normal illumination is achieved, meanwhile, the uniformity of light spots is improved, uncomfortable feeling brought to eyes of a user due to uneven light spots is reduced, and influence of uneven light spots on the eyes of the user is reduced.

In an embodiment, the center of the convex arc surface section 330 is located between the convex arc surface section 330 and the first side wall 311 and is close to the first side wall 311.

The light-emitting side wall surface of the convex curved surface section 330 is a free curved surface (the free curved surface refers to a curved surface with the random characteristics of traditional processing and forming, which cannot be composed of elementary analytical curved surfaces, but is composed of curved surfaces which are freely changed in a complex manner, namely, a so-called free curved surface). To simplify and reduce the difficulty of preparing the free-form surface, the convex curved surface section 330 may be a spherical cap surface. The larger the radius of curvature, the smaller the curvature, when the centre of a circle of the outer convex cambered surface section 330 is located in the first light guide ring groove 310, the larger the radius of curvature of the outer convex cambered surface section 330, the smaller the curvature difference between the curvature of the outer convex cambered surface section 330 and the first side wall surface 311, and the smaller the change of the light emergent angle after light transmission, so that the increasing amplitude of the light radiation angle transmitted by the desk lamp 10 is smaller, and the increasing of the irradiation range of the desk lamp 10 is not obvious. When the center of the convex arc surface section 330 is located between the convex arc surface section 330 and the first side wall surface 311 and is far away from the first side wall surface 311, the thickness of the annular lens 300 is larger, which is not beneficial to the overall structure of the lamp cap 11. When the center of the convex arc surface section 330 is located between the convex arc surface section 330 and the first side wall surface 311 and is close to the first side wall surface 311, the thickness of the annular lens 300 is suitable, the light emergent angle change of the transmitted light is larger, and the irradiation range of the desk lamp 10 is obviously enlarged.

In an embodiment, the upper side of the annular lens 300 is further provided with a boss 350, the boss 350 is disposed on a side of the first light guiding ring groove 310 away from the outer convex cambered surface section 330, and a top surface of the boss 350 abuts against the lower side of the circuit board 210.

Referring to fig. 3 to 7, the upper side of the annular lens 300 is further provided with a boss 350, and the boss 350 is used for supporting the circuit board 210. The boss 350 may be annular, or a plurality of bosses 350 may be disposed at intervals along the circumferential direction of the annular lens 300. The mesa of boss 350 is the plane setting, and the mesa can be bigger with circuit board 210 butt area, and the mesa is better to circuit board 210's supporting effect.

In an embodiment, the boss 350 is annular, and a plurality of first notch grooves 360 are disposed on a side of the boss 350 away from the first light guide ring groove 310, and the plurality of first notch grooves 360 are disposed at intervals along the circumferential direction of the boss 350.

Referring to fig. 3 to 7, the boss 350 is annular, a plurality of first notch grooves 360 are circumferentially spaced along the boss 350, and supporting ribs are formed between two adjacent first notch grooves 360, and the supporting ribs play a role in supporting the circuit board 210. By providing the first notch 360 in the boss 350, the weight of the annular lens 300 can be reduced. Meanwhile, compared with the grooves, the notch grooves are more convenient to process.

In one embodiment, the lamp cap 11 further comprises a cover 400, and the cover 400 is arranged at the cavity mouth of the mounting cavity; the lower side of the annular lens 300 is provided with a containing groove 380, and the lamp cap 11 further comprises a first waterproof rib 500, wherein the first waterproof rib 500 is arranged between the boss 350 and the sealing cover 400 and is contained in the containing groove 380.

Referring to fig. 2 and 3, the lamp cap 11 further includes a cover 400, where the cover 400 is disposed at the cavity opening of the mounting cavity, and is used for sealing the cavity opening of the mounting cavity to prevent the components in the mounting cavity from being exposed. The upper side of the sealing cover 400 is provided with a mounting hole, the inner wall of the mounting cavity is provided with a threaded hole corresponding to the mounting hole, and the threaded hole extends towards the mounting hole and penetrates into the mounting hole. The screw is inserted into the mounting hole and screwed with the screw hole to lock the screw hole in the mounting hole, thereby realizing the detachable connection of the cover 400 and the lamp housing 100. The lower side of the annular lens 300 is provided with a receiving groove 380, and the receiving groove 380 corresponds to the first notch groove 360. The first waterproof rib 500 and the accommodating groove 380 are annular, the first waterproof rib 500 is accommodated in the accommodating groove 380, the edge of the sealing cover 400 covers the notch of the accommodating groove 380, and the first waterproof rib 500 is used for reducing the possibility of water inflow between the sealing cover 400 and the annular lens 300.

In an embodiment, the lower side of the annular lens 300 further includes a planar segment 340, the planar segment 340 is connected to a side of the outer convex arc segment 330 near the first light guiding ring groove 310, and the planar segment 340 is disposed flush with the lower side of the cover 400; and/or, a second notch groove 370 is provided on one side of the annular lens 300 away from the convex cambered surface section 330, the edge of the cover 400 is accommodated in the second notch groove 370, and the lower side surface of the cover 400 is flush with the notch of the second notch groove 370.

Referring to fig. 2 and 3, the lower side of the annular lens 300 further includes a planar segment 340, and the planar segment 340 is disposed on a side of the outer convex arc segment 330 near the first light guiding ring groove 310 and is connected to the outer convex arc segment 330. The plane section 340 is arranged in a plane, so that the plane section 340 is connected with the sealing cover 400 more closely, and the gap between the plane section 340 and the sealing cover is smaller and more attractive. The plane section 340 is arranged flush with the lower side surface of the sealing cover 400, so that the first waterproof rib 500 is prevented from being exposed, and the risk of failure of the first waterproof rib 500 is reduced; meanwhile, the plane section 340 is flush with the lower side of the sealing cover 400, the lower side of the lamp cap 11 is smoother as a whole, and the whole is more attractive.

The second notch groove 370 is arranged below the accommodating groove 380 and is communicated with the accommodating groove 380, and the edge of the sealing cover 400 is accommodated in the second notch groove 370, so that the first waterproof rib 500 is further prevented from being exposed, and the risk of failure of the first waterproof rib 500 is reduced. The lower side of the sealing cover 400 is flush with the notch of the second notch 370, so that the lower side of the lamp cap 11 is smoother as a whole and more attractive as a whole.

In an embodiment, the upper side of the annular lens 300 is further provided with a second light guiding ring groove 320, and the second light guiding ring groove 320 is disposed between the first light guiding ring groove 310 and the boss 350.

Referring to fig. 5 to 7, the second light guiding ring groove 320 is disposed between the first light guiding ring groove 310 and the boss 350, when the light of the lamp bead 220 is transmitted from the first light guiding ring groove 310 into the second light guiding ring groove 320, a part of the light is refracted and emitted from the second light guiding ring groove 320 toward the center of the desk lamp 10, and another part of the light is reflected by the incident surface of the second light guiding ring groove 320 and emitted from the second light guiding ring groove 320 away from the center of the desk lamp 10. Light exiting from the second light guiding groove 320 away from the center of the desk lamp 10 reduces shielding of the cover 400 from light toward the center of the desk lamp 10, thereby reducing light loss.

In an embodiment, the first light guiding ring groove 310 further has a second side wall surface 312 near the center of the lamp housing 100, the lower end of the second side wall surface 312 is connected to the lower end of the first side wall surface 311, and the second side wall surface 312 is configured as a concave arc surface.

Referring to fig. 5 to 7, the first light guiding ring groove 310 further has a second side wall surface 312, the second side wall surface 312 is disposed opposite to the first side wall surface 311, and the lower end of the second side wall surface 312 is connected to the lower end of the first side wall surface 311, so that the cross section of the first light guiding ring groove 310 along the length direction of the lamp pole 12 is substantially V-shaped or U-shaped, on one hand, the effect of refracting and reflecting light during incidence is better, and on the other hand, the processing is more convenient. The second side wall surface 312 is configured as an inward concave arc surface, the light ray P ₄ enters from the second side wall surface 312, after being reflected by the second side wall surface 312, enters from the first side wall surface 311, after being refracted for the first time by the first side wall surface 311, is refracted for the second time by the outward convex arc surface section 330 along the refraction direction, and finally exits in the exit direction of the light ray P ₅. The outgoing angle of the light ray P ₅ is greater than the outgoing angle of the light ray P ₄, so that after the light ray is reflected by the second side wall surface 312, the light ray is refracted by the first side wall surface 311 and the outer convex cambered surface section 330, and the outgoing angle of the light ray by the outer convex cambered surface section 330 is increased, so that the radiation angle of the light ray transmitted by the desk lamp 10 is increased, and the irradiation range of the desk lamp 10 is enlarged.

In an embodiment, a plurality of fastening members 390 are disposed at the edge of the upper side of the annular lens 300, and the fastening members 390 are fastened to the inner wall of the mounting cavity to connect the annular lens 300 to the lamp housing 100.

Referring to fig. 3 to 7, a plurality of fastening members 390 are disposed along the edge of the upper side of the annular lens 300 at intervals, a step surface is formed on the inner wall of the mounting cavity, and the plurality of fastening members 390 are fastened on the step surface. The fastening members 390 may be disposed in two opposite directions or in three or more spaced positions. The outer side of the annular lens 300 is connected to the lamp housing 100 through the fastening member 390, and the cover 400 supports the inner side of the annular lens 300, so that the annular lens 300 is firmly installed in the installation cavity.

In an embodiment, the lamp cap 11 further includes a second waterproof rib 600, the second waterproof rib 600 is disposed between the fastening member 390 and the circuit board 210, a slot 610 is disposed on an upper side of the second waterproof rib 600, an inserting portion 110 is disposed on an inner wall of the mounting cavity and protrudes toward the slot 610, and the inserting portion 110 is inserted into the slot 610.

Referring to fig. 3 to 7, the second waterproof rib 600 is disposed on the upper side surface of the annular lens 300 and outside the first light guiding ring groove 310 and the light emitting component 200, and the second waterproof rib 600 reduces the possibility of water entering the first light guiding ring groove 310 and the light emitting component 200. The upside of second waterproof muscle 600 is provided with slot 610, and the inner wall of installation cavity is protruding to be equipped with grafting portion 110 towards slot 610, and grafting portion 110 inserts and locates in the slot 610 to it is fixed with second waterproof muscle 600, avoid second waterproof muscle 600 to remove, influence the waterproof effect of second waterproof muscle 600.

The annular lens 300 is integrally formed and is made of a high light transmission material such as a polycarbonate material (PC), a Polymethyl Methacrylate Material (PMMA), a polystyrene material (PS) or glass.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A desk lamp, characterized in that it comprises a lamp base, said lamp base comprising:

A lamp housing provided with a mounting cavity;

2. The desk lamp as recited in claim 1, wherein a center of the convex arc section is located between the convex arc section and the first side wall surface and is proximate to the first side wall surface.

3. The desk lamp as claimed in claim 1, wherein a boss is further provided on an upper side of the annular lens, the boss is provided on a side of the first light guiding ring groove away from the convex arc surface section, and a top surface of the boss abuts against a lower side of the circuit board.

4. The desk lamp as claimed in claim 3, wherein the boss is ring-shaped, a plurality of first notch grooves are provided at a side far away from the first light guide ring groove, and the plurality of first notch grooves are provided at intervals along a circumferential direction of the boss.

5. The desk lamp as recited in claim 3, wherein the lamp base further comprises a cover, the cover being disposed at an aperture of the mounting cavity; the lower side of the annular lens is provided with an accommodating groove, the lamp cap further comprises a first waterproof rib, and the first waterproof rib is arranged between the boss and the sealing cover and is accommodated in the accommodating groove.

6. The desk lamp as recited in claim 5, wherein the underside of the annular lens further comprises a planar segment, the planar segment connecting a side of the outer convex arcuate segment adjacent the first light guide ring groove, the planar segment being disposed flush with the underside of the cover;

7. The desk lamp as recited in claim 3, wherein a second light guiding ring groove is further provided on an upper side of the annular lens, and the second light guiding ring groove is provided between the first light guiding ring groove and the boss.

8. The desk lamp as recited in claim 1 wherein the first light guide ring groove further has a second sidewall surface near a center of the lamp housing, a lower end of the second sidewall surface is connected to a lower end of the first sidewall surface, and the second sidewall surface is configured as a concave arc surface.

9. The desk lamp as recited in claim 1, wherein edges of an upper side of the annular lens are provided with a plurality of fastening members, and the fastening members are fastened with an inner wall of the mounting cavity to connect the annular lens to the lamp housing.

10. The desk lamp as claimed in claim 9, wherein the lamp base further comprises a second waterproof rib, the second waterproof rib is arranged between the fastening piece and the circuit board, a slot is arranged on the upper side of the second waterproof rib, an inserting portion is arranged on the inner wall of the installation cavity in a protruding mode towards the slot, and the inserting portion is inserted into the slot.