LED table lamp

Abstract

The embodiment of the utility model provides an LED table lamp. The LED table lamp comprises a base, a stand column, a lamp arm and a lamp holder. The stand column is detachably connected with the base, the lamp arm is rotatably connected with the stand column, and the lamp cap is rotatably connected with the lamp arm. The lamp holder comprises a shell, a light-emitting lamp set and a diffusion assembly, the shell comprises a peripheral area and a central area, the peripheral area surrounds the central area, the central area is of an open structure, the light-emitting lamp set surrounds the peripheral area and is used for emitting light, the diffusion assembly is connected with the shell, and the diffusion assembly is connected with the shell. At least two opposite surfaces of the diffusion assembly are exposed by the central area, and the diffusion assembly is used for enabling light rays emitted by the light-emitting lamp set to penetrate through the central area so as to irradiate towards at least two opposite directions.

Description

Technical Field

[0001] The present application relates to the field of electronic consumer products, and in particular to an LED desk lamp. Background Art

[0002] Table lamps are small, exquisite, and easy to carry. They are widely used in home lighting, mainly for reading, working, studying, etc. Among the LED table lamps currently on the market, foldable table lamps with large light output surfaces are generally more popular because they have the advantages of large light output area, good uniformity, and easy operation. However, although the existing table lamps have a large light output surface, their light output direction is relatively single, and the overall lighting effect is not good. How to solve the above problems is what technicians in this field need to consider. Utility Model Content

[0003] In order to solve the problems in the prior art, the embodiment of the present application provides an LED desk lamp with better lighting effect and more convenient use.

[0004] The embodiment of the present application provides an LED desk lamp, comprising a base, a column, a lamp arm and a lamp head. The column is detachably connected to the base, the lamp arm is rotatably connected to the column, and the lamp head is rotatably connected to the lamp arm. The lamp head comprises a shell, a light-emitting lamp group and a diffusion component, the shell comprises a peripheral area and a central area, the peripheral area surrounds the central area, the central area is an open structure, the light-emitting lamp group is arranged around the peripheral area, the light-emitting lamp group is used to emit light, the diffusion component is connected to the shell, at least two opposite surfaces of the diffusion component are exposed through the central area, and the diffusion component is used to make the light emitted by the light-emitting lamp group pass through the central area to irradiate in at least two opposite directions.

[0005] In one embodiment, the diffusion component includes a diffusion plate, a diffusion film and a light guide plate stacked in sequence, the side of the light guide plate corresponds to the light-emitting lamp group, the side of the diffusion plate away from the light guide plate is exposed through the central area, and the side of the light guide plate away from the diffusion plate is exposed through the central area.

[0006] In one embodiment, the shell includes an upper cover portion and a lower cover portion, the upper cover portion and the lower cover portion are detachably connected, the upper cover portion and the lower cover portion are snapped together to form a accommodating cavity, the accommodating cavity is located outside the central area and is arranged around the central area, the light-emitting lamp group is arranged around the accommodating cavity, and the periphery of the diffusion component is fixed by the upper cover portion and the lower cover portion.

[0007] In one embodiment, the upper cover portion includes a first outer wall and a first inner wall that are spaced apart, the first outer wall is farther away from the central area than the first inner wall, and the lower cover portion includes a second outer wall and a second inner wall that are spaced apart, the second outer wall is farther away from the central area than the second inner wall, the first outer wall and the second outer wall are interlocked and connected, and the first inner wall and the second inner wall are spaced apart and cooperate with each other to hold the diffusion component.

[0008] In one embodiment, the upper cover portion also includes a plurality of limiting protrusions, and the plurality of limiting protrusions are spaced apart between the first outer wall and the first inner wall. The lamp head also includes an annular heat sink, which is disposed in the accommodating cavity and installed and positioned via the limiting protrusions. The annular light-emitting lamp group is connected to the annular heat sink.

[0009] In one embodiment, the LED desk lamp also includes a rotating shaft fixing seat, and the lamp head is connected to the lamp arm through the rotating shaft fixing seat, and the rotating shaft fixing seat includes a first connecting body, a first rotating pillar and two first connecting plates, the first rotating pillar and the two first connecting plates are respectively arranged on opposite sides of the first connecting body, and the two first connecting plates are used to connect to the lamp arm, the outer periphery of the first rotating pillar has a first partition structure with concave and convex intervals, and the shell has a second partition structure with concave and convex intervals, the first rotating pillar is rotatably connected to the shell, and the first partition structure cooperates with the second partition structure to make the lamp head rotatably connected to the rotating shaft fixing seat.

[0010] In one embodiment, two of the first connecting pieces are spaced apart on the same side of the first connecting body, and a first through hole is provided on the two first connecting pieces. The end of the lamp arm used to connect to the lamp holder is provided with a first rotating shaft and a first pin, and a first through axial hole is provided on the first rotating shaft. The two first connecting pieces are respectively provided on opposite sides of the first rotating shaft, and the two first through holes correspond to the first axial holes respectively. The first pin is inserted into the first axial hole and the first through hole, so that the rotating shaft fixing seat is rotatably connected to the lamp holder.

[0011] In one embodiment, a second rotating shaft and a second latch are further provided on the side of the lamp arm away from the lamp head, a second axial hole is formed on the second rotating shaft, the column includes a connecting piece, a avoidance groove is formed on the connecting piece, and two side walls of the connecting piece adjacent to the avoidance groove are each provided with a second through hole, the second rotating shaft extends into the avoidance groove, so that the two second through holes correspond to the second axial hole respectively, the second latch is inserted into the second axial hole and the second through hole, so that the lamp arm is rotatably connected to the column through the second rotating shaft.

[0012] In one embodiment, the base includes a protruding mounting interface, the column also includes a connecting terminal, the column can be detachably mounted on the mounting interface, the connecting terminal is detachably connected to the mounting interface, so that the lamp arm is detachably connected to the column.

[0013] In one embodiment, the maximum rotation angle of the lamp arm compared to the column is 90°, the lamp head is connected to the lamp arm via a rotating shaft fixing seat, the maximum rotation angle of the rotating shaft fixing seat compared to the lamp arm is 160°, and the maximum rotation angle of the lamp head compared to the rotating shaft fixing seat is 340°.

[0014] It can be understood that in the LED desk lamp of the present application, the column is rotatably connected to the lamp arm and the lamp arm is rotatably connected to the lamp head, so that the LED desk lamp has better convenience in use; at the same time, the column is detachably connected to the base, which further ensures the convenience of use of the LED desk lamp and improves its packaging and transportation efficiency. Furthermore, the shell of the lamp head has an open central area, and at least two opposite surfaces of the diffusion component are exposed from the central area. The light emitted by the light-emitting lamp group is diffused by the diffusion component and irradiated in at least two opposite directions, so that the light emitting directions of the LED desk lamp are increased, the light emitting area is increased, the light emitting uniformity of the LED desk lamp is improved, and the LED desk lamp has a better lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional schematic diagram of an LED desk lamp provided in an embodiment of the present application.

[0016] Figure 2 This is a schematic diagram of a three-dimensional exploded view of the LED desk lamp provided in an embodiment of the present application.

[0017] Figure 3 for Figure 1 A schematic partial cross-sectional view of an LED desk lamp along direction III-III.

[0018] Figure 4 A partial three-dimensional schematic diagram of the lamp holder of the LED desk lamp provided in an embodiment of the present application.

[0019] Figure 5 A three-dimensional schematic diagram of the cooperation between the lamp arm and the rotating shaft fixing seat of the LED desk lamp provided in an embodiment of the present application.

[0020] Figure 6 A partial three-dimensional exploded schematic diagram of the LED desk lamp provided in an embodiment of the present application.

[0021] Figure 7 for Figure 1 A schematic cross-sectional view of the LED desk lamp along direction VII-VII.

[0022] Main component symbols

[0023] LED desk lamp 10

[0024] Lamp holder 11

[0025] Housing 111

[0026] Accommodating cavity 1110

[0027] Upper cover 1111

[0028] Lower cover 1112

[0029] First outer wall 1113

[0030] First inner wall 1114

[0031] Second outer wall 1115

[0032] Second inner wall 1116

[0033] Limiting protrusion 1117

[0034] Surrounding area 1118

[0035] Central District 1119

[0036] Lighting set 114

[0037] Diffusion assembly 113

[0038] Diffusion film 1131

[0039] Diffuser 1132

[0040] Light guide plate 1133

[0041] Side 1130

[0042] First light emitting surface 1134

[0043] Second light emitting surface 1135

[0044] Shaft fixing seat 112

[0045] First connection body 1121

[0046] First rotating support 1122

[0047] First connecting piece 1123

[0048] The first partition structure 1124

[0049] Second partition structure 1125

[0050] Cross Section 1126

[0051] The first through hole 1127

[0052] Ring radiator 115

[0053] Lamp arm 12

[0054] The first rotating shaft 121

[0055] The first shaft hole 122

[0056] First latch 123

[0057] The second rotating shaft 124

[0058] Second shaft hole 125

[0059] Second latch 126

[0060] Column 13

[0061] Connector 131

[0062] Avoidance slot 132

[0063] Side wall 133

[0064] The second through hole 134

[0065] Connecting terminal 135

[0066] Base 14

[0067] Installation interface 141

[0068] Counterweight 142

[0069] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0070] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components. The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as those generally understood by ordinary technicians in the field to which the present application belongs. Furthermore, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the relevant art and the content of this application, and will not be interpreted as idealized or overly formal meanings.

[0071] Usually, table lamps are small, exquisite, and easy to carry. They are widely used in home lighting, mainly for reading, working, studying, etc. Among the LED table lamps currently on the market, foldable table lamps with large light output surfaces are generally more popular because they have the advantages of large light output area, good uniformity, and easy operation. However, although the existing table lamps have a large light output surface, their light output direction is relatively single, and the overall lighting effect is not good. How to solve the above problems is what technicians in this field need to consider.

[0072] Correspondingly, an embodiment of the present application provides an LED desk lamp, comprising a base, a column, a lamp arm and a lamp head. The column is detachably connected to the base, the lamp arm is rotatably connected to the column, and the lamp head is rotatably connected to the lamp arm. The lamp head comprises a shell, a light-emitting lamp group and a diffusion component, the shell comprises a peripheral area and a central area, the peripheral area surrounds the central area, the central area is an open structure, the light-emitting lamp group is arranged around the peripheral area, the light-emitting lamp group is used to emit light, the diffusion component is connected to the shell, at least two opposite surfaces of the diffusion component are exposed through the central area, and the diffusion component is used to allow the light emitted by the light-emitting lamp group to pass through the central area to irradiate in at least two opposite directions.

[0073] Therefore, in the LED desk lamp of the present application, the column is rotatably connected to the lamp arm and the lamp arm is rotatably connected to the lamp head, so that the LED desk lamp has better convenience in use; at the same time, the column is detachably connected to the base, which further ensures the convenience in use of the LED desk lamp and improves its packaging and transportation efficiency. Furthermore, the shell of the lamp head has an open central area, and at least two opposite surfaces of the diffusion component are exposed from the central area. The light emitted by the light-emitting lamp group is diffused by the diffusion component and irradiated in at least two opposite directions, so that the light emitting directions of the LED desk lamp are increased, the light emitting area is increased, the light emitting uniformity of the LED desk lamp is improved, and the LED desk lamp has a better lighting effect.

[0074] The following will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.

[0075] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0076] like Figures 1 to 7 As shown, the embodiment of the present application provides an LED desk lamp 10, including a base 14, a column 13, a lamp arm 12 and a lamp head 11. The column 13 is detachably connected to the base 14, the lamp arm 12 is rotatably connected to the column 13, and the lamp head 11 is rotatably connected to the lamp arm 12. The lamp head 11 includes a housing 111, a light-emitting lamp group 114 and a diffusion component 113. The housing 111 includes a peripheral area 1118 and a central area 1119, the peripheral area 1118 surrounds the central area 1119, and the central area 1119 is an open structure. The light-emitting lamp group 114 is arranged around the peripheral area 1118, and the light-emitting lamp group 114 is used to emit light. The diffusion component 113 is connected to the housing 111, and at least two opposite surfaces of the diffusion component 113 are exposed by the central area 1119. The diffusion component 113 is used to allow the light emitted by the light-emitting lamp group 114 to pass through the central area 1119 to irradiate in at least two opposite directions.

[0077] It can be understood that in the LED desk lamp 10 of the present application, the column 13 is rotatably connected to the lamp arm 12, and the lamp arm 12 is rotatably connected to the lamp head 11, so that the LED desk lamp 10 has good convenience in use. At the same time, the column 13 is detachably connected to the base 14, which further ensures the convenience of use of the LED desk lamp 10 and improves its packaging and transportation efficiency. Furthermore, the shell 111 of the lamp head 11 has an open central area 1119, and at least two opposite surfaces of the diffusion component 113 are exposed by the central area 1119. The light emitted by the light-emitting lamp group 114 is diffused by the diffusion component 113 and irradiated in at least two opposite directions, so that the light emitting directions of the LED desk lamp 10 are increased, the light emitting area is increased, the light emitting uniformity of the LED desk lamp 10 is improved, and the LED desk lamp 10 has a better lighting effect.

[0078] In one embodiment, the diffusion assembly 113 includes a diffusion plate 1132, a diffusion film 1131, and a light guide plate 1133 which are stacked in sequence. The side 1130 of the light guide plate 1133 corresponds to the light emitting lamp assembly 114, the side of the diffusion plate 1132 away from the light guide plate 1133 is exposed through the central area 1119, and the side of the light guide plate 1133 away from the diffusion plate 1132 is exposed through the central area 1119.

[0079] In this embodiment, the diffusion component 113 has a first light emitting surface 1134 and a second light emitting surface 1135 which are arranged opposite to each other. The first light emitting surface 1134 is a large surface of the light guide plate 1133 away from the diffusion plate 1132 and the diffusion film 1131, and the second light emitting surface 1135 is a large surface of the diffusion plate 1132 away from the diffusion film 1131 and the light guide plate 1133. The first light emitting surface 1134 is the main light emitting surface of the lamp head 11, and the first light emitting surface 1134 is configured to mainly face the lower side of the LED desk lamp 10 (that is, mainly irradiate toward the side of the base 14), and the second light emitting surface 1135 is the secondary light emitting surface of the lamp head 11, and the second light emitting surface 1135 is configured to mainly face the upper side of the LED desk lamp 10 (that is, mainly irradiate toward the side away from the base 14). The light emitting lamp group 114 may be an LED light strip, and the light emitting surface of the light emitting lamp group 114 faces the side surface 1130 of the light guide plate 1133. After the light emitted by the light emitting lamp group 114 enters the light guide plate 1133, it is guided out in at least two opposite directions and respectively emitted from the first light emitting surface 1134 and the second light emitting surface 1135. The luminous flux of the first light emitting surface 1134 is about 75% to 99%, and the luminous flux of the second light emitting surface 1135 is about 1% to 25%; preferably, the luminous flux of the first light emitting surface 1134 is 75%, and the luminous flux of the second light emitting surface 1135 is 25%.

[0080] It is understandable that the light emitting lamp group 114 can use full-spectrum LED lamp beads, with a display index Ra greater than 95 and R9 / R15 greater than 95. Adding a diffusion film 1131 between the light guide plate 1133 and the diffuser plate 1132 can control the luminous flux ratio of the upper and lower lights, and can make the upper and lower lights softer. The light guide plate 1133, the diffusion film 1131 and the diffuser plate 1132 can use known and feasible solutions, and the specific structures and parameters inside the light guide plate 1133, the diffusion film 1131 and the diffuser plate 1132 are not repeated.

[0081] In one embodiment, the housing 111 includes an upper cover 1111 and a lower cover 1112, and the upper cover 1111 and the lower cover 1112 are detachably connected. The upper cover 1111 and the lower cover 1112 are buckled to form a receiving cavity 1110, and the receiving cavity 1110 is located outside the central area 1119 and is arranged around the central area 1119. The light-emitting lamp group 114 is arranged around the receiving cavity 1110, and the periphery of the diffusion component 113 is fixed by the upper cover 1111 and the lower cover 1112.

[0082] In one embodiment, the upper cover portion 1111 includes a first outer wall 1113 and a first inner wall 1114 that are spaced apart, and the first outer wall 1113 is farther from the central area 1119 than the first inner wall 1114. The lower cover portion 1112 includes a second outer wall 1115 and a second inner wall 1116 that are spaced apart, and the second outer wall 1115 is farther from the central area 1119 than the second inner wall 1116. The first outer wall 1113 and the second outer wall 1115 are interlocked and connected, and the first inner wall 1114 and the second inner wall 1116 are spaced apart and cooperate with each other to hold the diffusion component 113.

[0083] In one embodiment, the upper cover 1111 further includes a plurality of limiting protrusions 1117, and the plurality of limiting protrusions 1117 are disposed between the first outer wall 1113 and the first inner wall 1114 at intervals. The lamp holder 11 further includes an annular heat sink 115, which is disposed in the accommodating cavity 1110 and is installed and positioned via the limiting protrusions 1117, and the annular light emitting lamp group 114 is connected to the annular heat sink 115.

[0084] In this embodiment, the upper cover 1111 and the lower cover 1112 are both roughly annular, and the parts of the upper cover 1111 and the lower cover 1112 corresponding to the central area 1119 have no physical structure, so that the first light-emitting surface 1134 and the second light-emitting surface 1135 of the diffusion component 113 can be exposed. The first outer wall 1113 and the second outer wall 1115 are mutually abutted and buckled, and have good connection stability. The first inner wall 1114 and the second inner wall 1116 are arranged at intervals to clamp the diffusion component 113, and at the same time cover the area where the diffusion component 113 is not arranged to prevent light leakage. The annular heat sink 115 and the annular light-emitting lamp group 114 are positioned in the accommodating cavity 1110 through a plurality of limiting protrusions 1117, so that the installation process is convenient and accurate.

[0085] It can be understood that the detachable upper cover 1111 cooperates with the lower cover 1112 to facilitate the installation and removal of the annular heat sink 115, the light assembly 114 and the diffusion assembly 113, while ensuring the stability of the internal structure of the lamp holder 11 and having good aesthetics.

[0086] In one embodiment, the LED desk lamp 10 further includes a rotating shaft fixing seat 112, and the lamp holder 11 is connected to the lamp arm 12 via the rotating shaft fixing seat 112. The rotating shaft fixing seat 112 includes a first connecting body 1121, a first rotating support 1122, and two first connecting pieces 1123, and the first rotating support 1122 and the two first connecting pieces 1123 are respectively arranged on opposite sides of the first connecting body 1121. The two first connecting pieces 1123 are used to connect to the lamp arm 12, and the outer periphery of the first rotating support 1122 has a first partition structure 1124 with a concave-convex interval, and the shell 111 has a second partition structure 1125 with a concave-convex interval, and the first rotating support 1122 is rotatably connected to the shell 111, and the first partition structure 1124 cooperates with the second partition structure 1125 to enable the lamp holder 11 to be rotatably connected to the rotating shaft fixing seat 112. Furthermore, the first partition structure 1124 is also provided with a transverse portion 1126 for limiting position, and the transverse portion 1126 can limit the range of mutual rotation between the first partition structure 1124 and the second partition structure 1125 .

[0087] In one embodiment, two first connecting pieces 1123 are arranged at intervals on the same side of the first connecting body 1121, and the two first connecting pieces 1123 are both provided with a first through hole 1127. The end of the lamp arm 12 for connecting the lamp holder 11 is provided with a first rotating shaft 121 and a first latch 123, and the first rotating shaft 121 is provided with a through first shaft hole 122, and the two first connecting pieces 1123 are respectively provided on both sides of the first rotating shaft 121. The two first through holes 1127 correspond to the first shaft hole 122, respectively, and the first latch 123 is inserted into the first shaft hole 122 and the first through hole 1127, so that the rotating shaft fixing seat 112 and the lamp holder 11 are rotatably connected.

[0088] It can be understood that by providing the rotating shaft fixing seat 112 as the connecting structure between the lamp arm 12 and the lamp head 11, the lamp head 11 can be rotated in two directions relative to the lamp arm 12; that is, the lamp head 11 can realize rotation toward the lamp arm 12 with the cooperation of the first rotating shaft 121, the first connecting piece 1123 and the first pin 123, and at the same time, the lamp head 11 can realize circumferential rotation with the first rotating pillar 1122 as the axis with the cooperation of the first rotating pillar 1122 and the shell 111.

[0089] In one embodiment, the lamp arm 12 is further provided with a second shaft 124 and a second latch 126 on the side away from the lamp head 11, and a second shaft hole 125 is provided on the second shaft 124. The column 13 includes a connecting member 131, and a relief groove 132 is formed on the connecting member 131. Two side walls 133 of the connecting member 131 adjacent to the relief groove 132 are respectively provided with two second through holes 134. The second shaft 124 extends into the relief groove 132, so that the two second through holes 134 correspond to the second shaft holes 125 respectively, and the second latch 126 is inserted into the second shaft hole 125 and the second through hole 134, so that the lamp arm 12 is rotatably connected to the column 13 through the second shaft 124.

[0090] It is understandable that the lamp arm 12 can realize rotation relative to the base 14 under the cooperation of the second rotating shaft 124, the second latch 126 and the connecting member 131. In this embodiment, the second rotating shaft 124 is disposed in the middle section of the lamp arm 12 instead of the end.

[0091] In one embodiment, the base 14 includes a protruding mounting interface 141, and the column 13 also includes a connecting terminal 135. The column 13 is detachably mounted on the mounting interface 141, and the connecting terminal 135 is detachably connected to the mounting interface 141, so that the lamp arm 12 is detachably connected to the column 13.

[0092] In this embodiment, the connection terminal 135 and the connection member 131 are respectively arranged at opposite ends of the column 13, and the connection terminal 135 and the connection member 131 are accommodated inside the column 13; the mounting interface 141 is protruded compared to the main body of the base 14, and can extend into the column 13 to connect with the connection terminal 135. A counterweight block 142 can also be arranged inside the base 14 to keep the LED desk lamp 10 stable.

[0093] It can be understood that the base 14 is connected to the lamp arm 12 through the column 13, which is convenient for consumers to move by hand and leaves space for subsequent upgrades of the LED desk lamp 10. The "upgrade" can be, for example, adding batteries, light sensing elements or human body sensing elements.

[0094] In one embodiment, the maximum rotation angle of the lamp arm 12 relative to the column 13 is 90°, the lamp head 11 and the lamp arm 12 are connected via a pivot fixing seat 112, the maximum rotation angle of the pivot fixing seat 112 relative to the lamp arm 12 is 160°, and the maximum rotation angle of the lamp head 11 relative to the pivot fixing seat 112 is 340°.

[0095] In the above, the specific implementation of the present application is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific implementation of the present application without departing from the spirit and scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. An LED desk lamp, characterized in that: include: Base; A column detachably connected to the base; A lamp arm rotatably connected to the column; A lamp holder, which is rotatably connected to the lamp arm, and includes a shell, a light-emitting lamp group and a diffusion component. The shell includes a peripheral area and a central area, the peripheral area surrounds the central area, and the central area is an open structure. The light-emitting lamp group is arranged around the peripheral area, and the light-emitting lamp group is used to emit light. The diffusion component is connected to the shell, and at least two opposite surfaces of the diffusion component are exposed through the central area. The diffusion component is used to allow the light emitted by the light-emitting lamp group to pass through the central area to irradiate in at least two opposite directions.

2. The LED desk lamp according to claim 1, characterized in that: The diffusion component includes a diffusion plate, a diffusion film and a light guide plate stacked in sequence, the side of the light guide plate corresponds to the light-emitting lamp group, the side of the diffusion plate away from the light guide plate is exposed through the central area, and the side of the light guide plate away from the diffusion plate is exposed through the central area.

3. The LED desk lamp according to claim 1, characterized in that: The shell includes an upper cover portion and a lower cover portion, the upper cover portion and the lower cover portion are detachably connected, the upper cover portion and the lower cover portion are buckled together to form a receiving cavity, the receiving cavity is located outside the central area and is arranged around the central area, the light-emitting lamp group is arranged around the receiving cavity, and the periphery of the diffusion component is fixed by the upper cover portion and the lower cover portion.

4. The LED desk lamp according to claim 3, characterized in that: The upper cover portion includes a first outer wall and a first inner wall that are spaced apart, the first outer wall is farther away from the central area than the first inner wall, the lower cover portion includes a second outer wall and a second inner wall that are spaced apart, the second outer wall is farther away from the central area than the second inner wall, the first outer wall and the second outer wall are interlocked and connected, and the first inner wall and the second inner wall are spaced apart and cooperate with each other to hold the diffusion component.

5. The LED desk lamp according to claim 4, characterized in that: The upper cover portion also includes a plurality of limiting protrusions, and the plurality of limiting protrusions are spaced apart between the first outer wall and the first inner wall. The lamp holder also includes an annular radiator, which is disposed in the accommodating cavity and installed and positioned via the limiting protrusions. The annular light-emitting lamp group is connected to the annular radiator.

6. The LED desk lamp according to claim 1, characterized in that: The LED desk lamp also includes a rotating shaft fixing seat, and the lamp head is connected to the lamp arm via the rotating shaft fixing seat. The rotating shaft fixing seat includes a first connecting body, a first rotating pillar and two first connecting plates. The first rotating pillar and the two first connecting plates are respectively arranged on opposite sides of the first connecting body. The two first connecting plates are used to connect to the lamp arm. The outer periphery of the first rotating pillar has a first partition structure with concave and convex intervals, and the shell has a second partition structure with concave and convex intervals. The first rotating pillar is rotatably connected to the shell, and the first partition structure cooperates with the second partition structure to make the lamp head rotatably connected to the rotating shaft fixing seat.

7. The LED desk lamp according to claim 6, characterized in that: The two first connecting pieces are arranged at intervals on the same side of the first connecting body, and the two first connecting pieces are each provided with a first through hole. The end of the lamp arm used to connect the lamp holder is provided with a first rotating shaft and a first pin, and the first rotating shaft is provided with a through first axial hole. The two first connecting pieces are respectively arranged on opposite sides of the first rotating shaft, and the two first through holes correspond to the first axial holes respectively. The first pin is inserted into the first axial hole and the first through hole, so that the rotating shaft fixing seat is rotatably connected to the lamp holder.

8. The LED desk lamp according to claim 1, characterized in that: A second rotating shaft and a second latch are further provided on the side of the lamp arm away from the lamp head, a second axial hole is provided on the second rotating shaft, the column includes a connecting piece, a avoidance groove is formed on the connecting piece, and two side walls of the connecting piece adjacent to the avoidance groove are each provided with a second through hole, the second rotating shaft extends into the avoidance groove, so that the two second through holes correspond to the second axial hole respectively, the second latch is inserted into the second axial hole and the second through hole, so that the lamp arm is rotatably connected to the column through the second rotating shaft.

9. The LED desk lamp according to claim 1, characterized in that: The base includes a mounting interface with a protrusion, and the column also includes a connecting terminal. The column can be detachably mounted on the mounting interface, and the connecting terminal is detachably connected to the mounting interface, so that the lamp arm is detachably connected to the column.

10. The LED desk lamp according to claim 1, characterized in that: The maximum rotation angle of the lamp arm compared to the column is 90°, the lamp head is connected to the lamp arm via a rotating shaft fixing seat, the maximum rotation angle of the rotating shaft fixing seat compared to the lamp arm is 160°, and the maximum rotation angle of the lamp head compared to the rotating shaft fixing seat is 340°.

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