CN109404810B - Ceiling lamp - Google Patents

Abstract

The present invention discloses a ceiling lamp, comprising a mounting seat and a lamp body, wherein the mounting seat is used for being pre-installed on a base, and the mounting seat and the lamp body are connected by a clamping structure, wherein the clamping structure comprises a clamping block and a clamping slot, wherein the clamping block is arranged on the mounting seat or the lamp body, and the clamping slot is arranged on the mounting seat or the lamp body, and the clamping slot allows the clamping block to slide relative to the clamping slot after being clamped, so that the lamp body can rotate circumferentially relative to the mounting seat. The ceiling lamp adopting the above structure can still freely adjust the rotation direction after the lamp body is fixed on the mounting seat, thus solving the problem that the fixed position offset of the mounting seat during the installation of the existing ceiling lamp affects the overall installation effect of the ceiling lamp.

Description

A ceiling lamp

Technical Field

The invention relates to the field of lamp body structures, and in particular to a ceiling lamp.

Background Art

In the prior art, ceiling lamps are usually fixed in the following two ways: one is to fix the lamp holder with screws, that is, to pass the screws through the lamp holder and fix it on the ceiling, and then fix the lamp body on the lamp holder. After the lamp body is fixed, the rotation direction cannot be adjusted as needed; the other is to fix it with screws and hanging plates on both sides, first fix the hanging plates on the ceiling, then install the lamp holder, and then use screws to lock the lamp holder from both sides, and then fix the lamp body. After this method is installed, the lamp body cannot adjust the rotation direction as needed. During on-site construction, due to the various shapes of the lamp body, if the position of the fixing piece corresponding to the lamp body is offset from the predetermined position when the lamp holder is fixed, the lamp body will also be offset or even skewed when fixed to the lamp holder, which will have a great impact on the overall installation effect of the ceiling lamp.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a ceiling lamp, so that the lamp body can still freely adjust the rotation direction after being fixed to the mounting base, thereby solving the problem that the fixed position offset of the mounting base affects the overall installation effect of the ceiling lamp during the installation of the existing ceiling lamp.

To achieve the above object, the present invention adopts the following technical solutions:

As a first technical solution, a ceiling lamp is specifically provided, comprising a mounting base and a lamp body; the mounting base is used to be pre-installed on a base; the mounting base and the lamp body are connected by a clamping structure, and the clamping structure comprises a clamping block and a clamping slot; the clamping block is arranged on the mounting base or the lamp body, and the clamping slot is arranged on the other one of the mounting base or the lamp body; the clamping slot allows the clamping block to slide relative to the clamping slot after clamping, so that the lamp body can rotate circumferentially relative to the mounting base.

Based on the first technical solution, there is also a second technical solution: the mounting seat or the lamp body is provided with a side wall, and the side wall is provided with a ring-shaped or arc-shaped groove, and the groove allows the block to slide relative to the groove along an arc track.

Based on the first technical solution, there is also a third technical solution: the mounting base or lamp body is provided with a side wall, and the side wall is provided with an annular or arc-shaped flange inward or outward, and the flange forms a part of the slot, and the flange allows the block to slide relative to the flange along an arc trajectory.

Based on the second or third technical solution, there is also a fourth technical solution: a connecting plate is provided on the other of the mounting seat or the lamp body, and the clamping block is radially slidably connected to the connecting plate and extends toward the side wall; the clamping block is radially slidable to engage with or exit the clamping slot.

Based on the fourth technical solution, there is also a fifth technical solution: the number of the card blocks is at least one pair, and each pair of card blocks is arranged opposite to each other in the radial direction.

Based on the fourth technical solution, there is also a sixth technical solution: it also includes an elastic member, a top plate is fixed on the connecting plate, and the elastic member is installed between the top plate and the card block so that the card block remains connected with the card slot when not affected by external force.

Based on the fifth technical solution, there is also a seventh technical solution: it also includes an elastic member, a top plate is fixed on the connecting plate, and the elastic member is installed between the top plate and the card block so that the card block can maintain the card connection with the card slot when not affected by external force.

Based on the seventh technical solution, there is also an eighth technical solution: the clamping block is provided with a clamping head radially outward, and the clamping slot is opposite to the clamping head; the clamping block is pushed radially inward, and after the clamping head is extended into the plane where the clamping slot is located, the clamping block is released, and the elastic member pushes the clamping block to reset, so that the clamping head is engaged with the clamping slot.

Based on the eighth technical solution, there is also a ninth technical solution: the connecting plate is arranged on the lamp body, and the side wall is arranged on the mounting seat; the clamping block includes a clamping block body, a push-stop portion, a clamping claw and a clamping head that are fixed or connected to each other as a whole; a sliding groove is radially provided on the connecting plate; the clamping block body is slidably connected with the sliding groove; the push-stop portion is located at one end of the body and extends to the mounting seat; the clamping claw is located at the other end of the body and extends to the mounting seat; the clamping head is located at the free end of the clamping claw.

Based on the second technical solution, there is also a tenth technical solution: a clamping block extending toward the side wall is provided on the other of the mounting seat or the lamp body, and a clamping head with an inclined surface is provided on the clamping block, so that the lamp body is pushed toward the mounting seat, and the side wall presses against the inclined surface of the clamping head to elastically deform the clamping block until the clamping head is fully inserted into the slot and then restores the deformation.

Based on the third technical solution, there is also an eleventh technical solution: a clamping block extending toward the side wall is provided on the other of the mounting seat or the lamp body, and a clamping head with an inclined surface is provided on the clamping block, which pushes the lamp body toward the mounting seat, and the flange presses against the inclined surface of the clamping head to elastically deform the clamping block until the clamping head is fully inserted into the slot and then restores its deformation.

Based on the second technical solution, there is also a twelfth technical solution: the side wall is provided with a through groove perpendicular to the card slot, and the through groove opens to the free end of the side wall; the card block is a protrusion fixed on the mounting seat or the other side of the lamp body, and the lamp body is pushed toward the mounting seat so that the protrusion passes through the through groove and is located in a plane parallel to the card slot; and the protrusion enters the card slot by rotating the lamp body.

Based on the third technical solution, there is also a thirteenth technical solution: the flange is provided with a notch; the clamping block is a protrusion fixed on the mounting seat or another side of the lamp body, and the lamp body is pushed toward the mounting seat so that the protrusion passes through the notch; and then the protrusion enters the clamping slot by rotating the lamp body.

From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

1. A ceiling lamp provided by the present invention comprises a mounting base and a lamp body, wherein the mounting base is pre-installed on a base and is clamped with the lamp body through a clamping structure, and the clamping connection method reduces the difficulty of installing the lamp body; at the same time, the clamping structure comprises a clamping block and a clamping groove, and the clamping block can slide relative to the clamping groove after being clamped, so that the lamp body can rotate circumferentially relative to the mounting base; after the lamp body is clamped to the mounting base, the lamp body is fixed and will not fall off, and at the same time, since there is space for the clamping block to slide in the clamping groove, the lamp body can freely adjust the rotation direction when the mounting base is fixed, so that the direction of the lamp body of the ceiling lamp is regular and appropriate, which solves the problem of poor overall appearance of the ceiling lamp caused by the displacement of the fixing position of the mounting base during the installation of the existing ceiling lamp and the inability to adjust the direction of the lamp body.

2. A ceiling lamp provided by the present invention is provided with a side wall for opening a slot. The slot can be a ring-shaped or arc-shaped slot structure, so that the clamping block can slide relative to the slot in an arc trajectory after being clamped, and then the lamp body can be rotated along the circumferential direction after being clamped, which is convenient for adjusting the direction of the lamp body. At the same time, the slot structure is easy to process and can be directly milled on the side wall, with high production efficiency.

3. A ceiling lamp provided by the present invention is provided with a side wall for setting a flange, the flange is a ring-shaped or arc-shaped structure protruding from the side wall and set inward or outward, and the flange as a part of the slot can form a slot with other planes, and after the clamping block is clamped on the flange, it can slide relative to the flange in an arc trajectory, so that the lamp body after clamping can be rotated in the circumferential direction, which is convenient for adjusting the direction of the lamp body; at the same time, the flange structure is easy to install, and when the lamp body is pushed toward the mounting seat, the upper surface of the lamp body can be directly pushed to the top of the lower edge of the side wall, without the need to align the clamping block with the flange, and then the lamp body is lowered to fall and can be clamped to the upper surface of the flange.

4. A ceiling lamp provided by the present invention is also provided with a connecting plate, and a card block is radially slidably connected to the connecting plate and extends to the side wall. The card block can be engaged with or withdrawn from the card slot by radial sliding. The radial sliding connection limits the sliding direction of the card block, so that the card block can only slide radially inward or outward, thereby making the connection between the mounting base and the lamp body more secure. At the same time, it is also convenient to apply force to the card block during the installation process, thereby reducing the difficulty of installation.

5. In a ceiling lamp provided by the present invention, the number of the clamping blocks is set to be at least one pair, and each pair of the clamping blocks is arranged radially opposite to each other. The paired clamping structures enable the lamp body to maintain a balanced state after installation to prevent the lamp body from falling.

6. A ceiling lamp provided by the present invention also includes an elastic member, which acts between the top plate and the card block on the connecting plate. The elastic member applies force to the card block so that the card block remains engaged with the card slot when not affected by other external forces. Through the force applied by the elastic member, it is only necessary to apply force in one direction to the card block during installation, and the elastic member can automatically reset the card block, reducing the difficulty of installation.

7. A ceiling lamp provided by the present invention has a clamping head extending radially outward on a clamping block, and a clamping slot and the clamping head are oriented in opposite directions. During installation, the clamping head can be pushed to extend into the plane where the clamping slot is located by applying a radially inward force to the clamping block, and then the clamping head can be reset by an elastic member when it is released to complete the clamping connection. Since the pressure applied to the clamping block is radially inward, the installer can easily push the clamping block to slide inward with a single finger on both hands when supporting the ceiling lamp body, thereby reducing the difficulty of installation and disassembly.

8. The present invention provides a ceiling lamp, wherein the card block includes a card block body, a push-stop portion, a claw and a clamping head which are fixedly connected or connected as one body to each other, the card block body is radially slidably connected with a slide groove on a connecting plate, the push-stop portion is located at one end of the card block body, the claw is located at the other end of the body, and the push-stop portion and the claw both extend in the same direction, so that the card block forms a "concave" structure, and the clamping head is arranged at the free end of the claw. Since the slot is arranged on the side wall, the lower edge of the side wall is at a certain distance from the position of the slot. When the clamping head is clamped with the slot, the lower edge of the side wall can extend into the "concave" part of the card block, thereby reducing the length of the claw, thereby reducing the overall thickness of the lamp body, and improving the aesthetics of the ceiling lamp.

9. A ceiling lamp provided by the present invention adopts a card block that can undergo elastic deformation. The card head arranged on the card block has an inclined surface. When the lamp body is pushed toward the mounting seat, the side wall or the flange presses against the inclined surface of the card head and causes the card block to undergo elastic deformation in a direction perpendicular to the side wall. After the lamp body is pushed further to make the card head reach the position of the card slot, the card head is not subject to force and the card block recovers its deformation and is engaged with the card slot. For the installer, the engagement can be completed by only pushing the lamp body continuously toward the mounting seat. The installation process is simple and convenient.

10. A ceiling lamp provided by the present invention sets the card block as a protrusion on the mounting seat or the lamp body. When the card slot is an annular or arc-shaped slot hole set on the side wall, a through slot is also provided on the card slot; when an annular or arc-shaped flange is set on the side wall, a notch is provided on the flange; the protrusion can pass through the through slot or the notch and extend into the plane where the card slot or the flange is located, and then the lamp body is rotated to make the protrusion enter the slot hole or above the flange to complete the card connection. For the installer, it is only necessary to align the card block with the through slot or the notch, continue to push the lamp body to a certain height, and then rotate the lamp body so that the card block enters the card slot or above the flange to complete the card connection. The installation process is simple and convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the structure of Embodiment 1 of the present invention;

FIG2 is a schematic diagram of the structure of Embodiment 2 of the present invention;

FIG3 is a schematic diagram of the structure of Embodiment 3 of the present invention;

FIG4 is a schematic diagram of the structure of Embodiment 4 of the present invention;

FIG5 is a schematic diagram of the structure of Embodiment 5 of the present invention;

FIG6 is a schematic diagram of the structure of Embodiment 6 of the present invention;

FIG7 is a schematic diagram of the structure of Embodiment 7 of the present invention;

FIG8 is a schematic diagram of the structure of Embodiment 8 of the present invention;

FIG9 is a schematic diagram of the structure of Embodiment 9 of the present invention;

FIG10 is a schematic diagram of the structure of Embodiment 10 of the present invention;

FIG. 11 is a schematic diagram of the structure of the card block described in Example 1-7.

Description of main reference numerals:

1. Mounting seat; 2. Lamp body; 21. Connecting plate; 22. Top plate; 23. Elastic member; 3. Side wall; 4. Block; 41. Clamp head; 5. Clamp groove; 51. Flange.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

Refer to Figure 1, which shows an embodiment of the ceiling lamp provided by the present invention. The embodiment 1 includes a mounting base 1 and a lamp body 2. The mounting base 1 and the lamp body 2 are clamped together by a clamping structure, and the mounting base 1 is pre-installed on a base such as a ceiling or a wall.

The clamping structure comprises a clamping block 4 and a clamping slot 5 . The clamping block 4 is provided with a clamping head 41 extending radially outward.

The mounting seat 1 has a side wall 3 extending downward from its edge, and a slot 5 is provided on the side wall 3 . In the first embodiment, the slot 5 is an annular through slot penetrating the side wall 3 . In other embodiments, the slot 5 may also be an annular or arc-shaped recessed groove provided on the side wall 3 .

A connecting plate 21 is provided on the lamp body 2 , and the clamping blocks 4 are radially slidably connected to the connecting plate 21 ; the clamping blocks 4 are a pair and are radially oppositely arranged.

During installation, push the lamp body 2 toward the mounting base 1, and apply radial inward force to the clamping block 4, so that the clamping block 4 slides toward the center of the lamp body 2 and the clamping head 41 reaches the plane where the clamping groove 5 is located, and then pull the clamping block 4 radially outward to insert the clamping head 41 into the clamping groove 5 to complete the clamping connection. After the clamping block 4 and the clamping groove 5 are clamped, since the clamping groove 5 is an annular through groove, when the lamp body 2 is rotated in the circumferential direction, the clamping head 41 can slide along the clamping groove 5 in an arc track, so that the lamp body 2 can be freely rotated to adjust the angle and direction.

On the basis of the embodiment 1, the present invention further provides the embodiment 2, as shown in FIG2 , which differs from the embodiment 1 in that it further comprises an elastic member 23, a top plate 22 is fixedly provided on the connecting plate 21, and the elastic member 23 is installed between the top plate 22 and the clamping block 4. The elastic member 23 applies a radially outward force to the clamping block 4, and when the lamp body 2 is mounted on the mounting seat 1, after the force applied to the clamping block 4 is removed, the elastic member 23 automatically pushes the clamping block 4 outward so that the buckle 41 is clamped with the clamping groove 5.

Among them, the slot 5 can be a through slot passing through the side wall 3 in Example 2, or a sunken groove in Example 3 shown in Figure 3, or an annular or arc-shaped flange 51 arranged inward or outward on the side wall 3 in Example 4 shown in Figure 4. In Example 4, the flange 51 and the bottom plate of the mounting seat 1 form a slot 5. In Example 5 as shown in Figure 5, the flange 51 and the base on which the mounting seat 1 is located form a slot 5. In this case, the flange 51 is the lower edge of the formed slot 5, and because the flange 51 is annular or arc-shaped, it can slide along the flange 51 in an arc-shaped trajectory after the clamping block 4 is clamped.

In addition, in addition to the bent shape shown in Examples 1-5, the clamping head 41 can also have a sloped shape as shown in Examples 6, 7 and 8. During installation, the lower edge of the side wall 3 or the flange 51 can be pressed against the slope of the clamping head 41, so that the clamping block 4 is forced to slide radially inward, and when the clamping head 41 reaches the lower edge of the slot 4, it is pushed by the elastic member 23 to automatically reset.

As shown in Figures 5 and 6, the flange 51 can be oriented outward or inward, and the corresponding clamping head 41 can also be oriented inward or outward accordingly; similarly, when the clamping groove 4 provided on the side wall 3 is a recessed groove, the direction of its groove opening can also be outward or inward, and the corresponding clamping head 41 can also be oriented inward or outward accordingly.

In the embodiment 7 shown in FIG. 7 , the block 4 can also be arranged on the mounting seat 1, and the slot 5 can be correspondingly arranged on the lamp body 2. The difference between this embodiment and the above-mentioned embodiments 1-6 is that the connecting plate 21 is arranged on the mounting seat 1, and the side wall 3 is arranged on the lamp body. During installation, the lamp body 2 is also pushed toward the mounting seat 1, and the block 4 is radially inwardly forced to slide to a specific position. After the clamp head 41 reaches the plane where the flange 5' is located, the force applied to the block 4 is removed, and the elastic member 23 can automatically reset the block 4, so that the clamp head 41 is engaged with the flange 51.

In the above-mentioned embodiments 1-7, by applying pressure to the clamping block 4, the clamping head 41 can be disengaged from the clamping slot 5, thereby removing the lamp body 2.

At the same time, as a preferred technical solution, in the above-mentioned embodiments 1-7, the block 4 used has a structure as shown in FIG. 11, the block 4 includes a block body 42, a push-stop portion 43, a claw 44 and a clamp head 41, a radially arranged slide groove on the connecting plate 21, the block body 42 is slidably connected with the slide groove, the push-stop portion 43 is located at one end of the block body 42, the claw 44 is located at the other end of the block body 42, and the clamp head 41 is located at the free end of the claw 44. When the connecting plate 21 is arranged on the lamp body 2 and the side wall 3 is arranged on the mounting seat 1, the push-stop portion 43 and the claw 44 both extend in the direction of the mounting seat 1.

In the embodiment with the elastic member 23 , two ends of the elastic member 23 act on the top plate 22 and the claw 44 respectively, or act on 22 and the block body 42 respectively.

The push-stop portion 43 and the claw 44 form a "concave" structure of the block 4, and the lower edge of the side wall 3 can extend into the middle of the block 4, which can effectively reduce the thickness of the block 4 and thus reduce the overall thickness of the lamp body.

At the same time, the setting of the push-stop portion 43 makes it more convenient to apply force to the block 4. In embodiments 2, 3, 4, and 6, the clamp head 41 faces outward, and a radially inward force is applied to the block 4 through the push-stop portion 43, and the block 4 is reset through the elastic member 23, so that the lamp body 2 can be connected to the mounting seat 1. In the above process, the installer can use most of the palm to support the lamp body 2, and only need to use a single finger of both hands to push the block 4 inward. After the block 4 is extended to a specific position, the lamp body 2 can be continuously pushed to release the force applied to the block 4, and the elastic member 23 automatically resets the block 4. It is easier to apply force during the installation process, which greatly reduces the difficulty of installation.

As shown in FIG8 and FIG9 , the difference between the embodiment 8 and the embodiment 9 and the aforementioned embodiment is that the block 4 is fixedly arranged on the lamp body 2 and extends toward the mounting seat 1, and a clamping head 41 with an inclined surface is arranged on the block 4. In the embodiment 8 and the embodiment 9, a flange 51 is arranged on the side wall 3 of the mounting seat 1, and the flange 51 can be used for clamping with the block 4. In the process of pushing the lamp body 2 toward the mounting seat 1, the flange 51 presses against the inclined surface of the clamping head 41, so that the block 4 undergoes elastic deformation. When the force exerted by the flange 51 on the clamping head 41 disappears, the block 4 recovers its deformation and the clamping head 41 is clamped with the flange 51.

In other embodiments, the clamping groove 4 may also be an annular or arc-shaped through groove or recessed groove provided on the side wall 3 , and the inclined surface of the clamping head 41 abuts against the free end of the side wall 3 , thereby deforming the clamping block 4 .

The embodiment 10 shown in FIG. 10 is different from the above-mentioned embodiments in that the block 4 is a protrusion fixed on the lamp body 2, the slot 5 is provided on the side wall 3, and a through slot 52 perpendicular to the slot 5 is provided on the slot 5, and the through slot 52 opens to the free end of the side wall 3. The block 4 of the lamp body 2 is aligned with the through slot 52 on the mounting base 1 and pushed continuously, so that the block 4 passes through the through slot 52 and is located in a plane parallel to the slot 5, and then the lamp body 2 is rotated to push the block 4 into the slot 5, and the clamping is completed.

In the above embodiments, the mounting base 1 needs to be pre-installed on the base first, and then the lamp body 2 and the mounting base 1 are snapped into place, and then the position can be adjusted by rotating the lamp body 2. A power contact is provided on the side of the middle part of the mounting base 1 facing the base, which can be externally connected to the circuit line on the base. A ring-shaped and hole-shaped lamp holder is provided on the side of the middle part of the mounting base 1 away from the base. A copper sheet electrically connected to the power contact is provided in the lamp holder. Two copper pillars are provided on the upper surface of the lamp body 2 relative to the lamp holder. The copper pillars can be inserted into the hole-shaped and ring-shaped lamp holders respectively. The copper pillar inserted into the hole-shaped lamp holder can rotate in the lamp holder, and the copper pillar inserted into the ring-shaped lamp holder can slide along the lamp holder, so that the electrical connection between the lamp body and the mounting base is not disconnected when the lamp body rotates. An interface for installing a lamp tube is provided at a position corresponding to the copper pillar inside the lamp body 2 to supply power to the lamp tube.

The ceiling lamp provided by the present invention is provided with a mounting base 1 pre-installed on a base and a lamp body 2 for mounting a light source, and the mounting base 1 and the lamp body 2 are clamped together by a clamping structure. By setting the shape and structure of the clamping block 4 and the clamping groove 5 in the clamping structure, the clamping block 4 can slide relative to the clamping groove 5 in an arc track after being clamped into place, so that the lamp body 2 can still rotate in the circumferential direction after being clamped into place, thereby achieving the purpose of quickly adjusting the position of the lamp body 2. At the same time, the lamp body 2 can be quickly removed and installed by means of clamping, and the difficulty of installation and disassembly is greatly reduced.

The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims (6)

1. A ceiling lamp, characterized in that it comprises a mounting seat and a lamp body; the mounting seat is used to be pre-installed on a base; the mounting seat and the lamp body are connected by a clamping structure, the clamping structure comprises a clamping block and a clamping groove; the clamping block is arranged on the lamp body, the mounting seat is provided with a side wall, and the clamping groove is arranged on the side wall of the mounting seat; the clamping groove allows the clamping block to slide relative to the clamping groove after being clamped, so that the lamp body rotates circumferentially relative to the mounting seat; The lamp body is provided with a connecting plate, and the clamping block is radially slidably connected to the connecting plate and extends toward the side wall; the clamping block is radially slidable to engage with or exit the clamping slot; It also includes an elastic member. A top plate is fixed on the connecting plate. The elastic member is installed between the top plate and the card block so that the card block can maintain the card connection with the card slot when no external force is applied. 2. A ceiling lamp as claimed in claim 1, characterized in that a ring-shaped or arc-shaped groove is provided on the side wall, and the groove allows the block to slide relative to the groove along an arc track. 3. A ceiling lamp as described in claim 1, characterized in that the side wall is provided with an annular or arc-shaped flange inwardly or outwardly, the flange forms a part of the slot, and the flange allows the block to slide relative to the flange along an arc track. 4. A ceiling lamp as claimed in claim 2 or 3, characterized in that the number of the card blocks is at least one pair, and each pair of card blocks is arranged opposite to each other in the radial direction. 5. A ceiling lamp as described in claim 4, characterized in that the clamping block is provided with a clamping head extending radially outward, and the clamping slot is opposite to the clamping head; after the clamping block is pushed radially inward and the clamping head is extended into the plane where the clamping slot is located, the clamping block is released, and the elastic member pushes the clamping block to return to its original position, so that the clamping head is engaged with the clamping slot. 6. A ceiling lamp as described in claim 5, characterized in that the blocking block includes a blocking body, a push-stop portion, a claw and a clamping head that are fixed or connected to each other as one; a sliding groove is radially provided on the connecting plate; the blocking body is slidingly connected to the sliding groove; the push-stop portion is located at one end of the body and extends toward the mounting seat; the claw is located at the other end of the body and extends toward the mounting seat; and the clamping head is located at the free end of the claw.