Ceiling lamp

Abstract

A ceiling lamp comprises a lamp body and a lamp cover. The driving module is used for driving the lamp body to work, an alternating current and direct current conversion unit used for converting alternating current of the mains supply into direct current and a driving unit electrically connected with the output end of the alternating current and direct current conversion unit are arranged in the driving module, and the output end of the driving unit is electrically connected with a light source of the lamp body; the sensing module is electrically connected with the driving module and is used for sensing a human body and feeding back a signal to the driving module; a power supply unit used for supplying power to the induction module is arranged in the induction module, and the input end of the power supply unit is electrically connected with the output end of the alternating current and direct current conversion unit. The power supply unit used for supplying power to the induction module is arranged in the induction module, when the lamp body is used for occasions needing the induction module, the input end of the power supply unit in the induction module is electrically connected with the output end of the alternating current and direct current conversion unit in the driving module, and therefore a power supply module does not need to be additionally arranged in the driving module; and the driving module can realize standardized design.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting, and in particular relates to a ceiling lamp. Background Art

[0002] Ceiling lamps are widely used in various occasions that require lighting, such as residences, shops, schools, museums, and office buildings. People may have slightly different needs for ceiling lamps in different occasions, or have multiple functional requirements for LED ceiling lamps in the same occasion. For this reason, the Chinese utility model patent "A Lamp" with patent number 202221975923.5 and authorization announcement number CN217784982U discloses a lamp, which includes: a housing, which defines an installation cavity; an LED light board, which is arranged in the installation cavity; a driver, which is arranged in the installation cavity and is electrically connected to the LED light board; a power module, which is used to be electrically connected to an external AC power supply; the power module, the driver, and the LED light board are all reserved with wiring terminals, and the external optional functional module can be plugged into the wiring terminals on the LED light board, the driver, and / or the power module through its own reserved wiring terminals.

[0003] The above-mentioned ceiling lamps are convenient for users to quickly install corresponding functional modules according to actual needs to meet different needs. However, in actual practice, different usage scenarios also have different requirements for the lighting brightness of ceiling lamps. For example, the lighting brightness of ceiling lamps used in corridors does not need to be too high, while the lighting brightness of ceiling lamps used in classrooms, offices and other indoor places needs to be higher. This leads to the need to purchase ceiling lamps with different lighting brightness separately for different usage scenarios or users, which is inconvenient.

[0004] At the same time, the existing ceiling lamp has the function of sensing the human body to adjust the brightness, and there are two ways of cooperating between the sensing module and the driving module:

[0005] 1. The sensing module and the driving module are connected to the mains separately. This method of sensing cannot be dimmed: the ceiling light can be completely off or have a certain brightness when no one is around, and it can be fully lit when someone is around. Dimming is to adjust the brightness when no one is around;

[0006] 2. A power supply module is provided inside the driving module to convert high voltage DC (300V) into low voltage DC (12V) to power the sensing module. The driving module itself has an AC to DC module to power the LED light source.

[0007] Since there are relatively few occasions where sensing modules are needed (usually used in corridors, parking lots, etc., far less than home usage), the sensing modules can be installed later and are dimmable. As a result, the driver module cannot be designed in a standardized manner as a universal component. In some occasions where the sensing module is not needed, the driver module still has a power supply module, resulting in higher costs. Utility Model Content

[0008] The first technical problem to be solved by the utility model is to provide a ceiling lamp in view of the current status of the prior art, so that the driving module can realize standardized design.

[0009] The second technical problem to be solved by the present invention is to provide a ceiling lamp that can be applied to different scenes to enhance the user experience.

[0010] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a ceiling lamp, comprising:

[0011] Lamp body;

[0012] A driving module for driving the lamp body, which is provided with an AC / DC conversion unit for converting AC power from the mains into DC power, and a driving unit electrically connected to the output end of the AC / DC conversion unit, wherein the output end of the driving unit is electrically connected to the light source of the lamp body;

[0013] A sensing module, electrically connected to the driving module, for sensing the human body and feeding back signals to the driving module;

[0014] Features:

[0015] The induction module is provided with a power supply unit for supplying power to the induction module, and an input end of the power supply unit is electrically connected to an output end of the AC / DC conversion unit.

[0016] The utility model provides a power supply unit for supplying power to the induction module in the induction module. When the lamp body is used in an occasion where the induction module is needed, the input end of the power supply unit in the induction module is electrically connected to the output end of the AC / DC conversion unit in the driving module. Therefore, there is no need to provide a power supply module in the driving module, so that the driving module can be designed in a standardized manner.

[0017] Preferably, the induction module is a microwave induction module.

[0018] Preferably, the power supply unit includes a filter circuit, a step-down circuit and a voltage divider circuit which are electrically connected in sequence, the input end of the filter circuit is electrically connected to the output end of the AC / DC conversion unit, and the output end of the voltage divider circuit is electrically connected to the induction module.

[0019] Furthermore, the filter circuit includes a diode, an inductor, a capacitor, and an electrolytic capacitor. The positive electrode of the diode is connected to the output end of the AC / DC conversion unit, and the negative electrode of the diode is connected to one end of the inductor; one end of the capacitor is connected between the connection line of the diode and the inductor, and the other end of the capacitor is connected to the negative electrode of the electrolytic capacitor. The positive electrode of the electrolytic capacitor is connected to the other end of the inductor and serves as the output end of the filter circuit.

[0020] In the above scheme, preferably, the AC-DC conversion unit includes a transformer and a rectifier bridge electrically connected in sequence, the input end of the transformer is connected to the AC power, the DC positive output end of the rectifier bridge is connected to the drive unit and the input end of the power supply unit, and the DC negative output end of the rectifier bridge is grounded.

[0021] Furthermore, the driving unit includes a driving chip, whose power supply end is connected to the DC positive output end of the rectifier bridge, and whose PWM signal end is connected to the sensing module. In this way, the driving chip can drive the lamp body to work according to the signal output by the sensing module.

[0022] In the above solutions, in order to further solve the above second technical problem, preferably, the ceiling lamp further includes:

[0023] A shell having a cavity inside, wherein at least a portion of the bottom wall thereof is a light-transmitting wall;

[0024] At least two decorative covers are selectively and detachably mounted on the outside of the bottom wall of the housing, and portions of the decorative covers corresponding to the light-transmitting wall are provided with hollow holes for light emission, and the hollow holes on different decorative covers have different areas and / or shapes;

[0025] The lamp body is arranged in the shell and can emit light toward the light-transmitting wall.

[0026] When in use, one of the decorative covers can be selected and installed outside the bottom wall of the shell as needed. Due to the different areas and / or shapes of the hollow holes on different decorative covers, the lighting effects of the ceiling lamp are different, meeting the usage needs of different scenes and different groups of people, thereby improving the user experience.

[0027] Preferably, the light-transmitting wall is circular, the hollow holes on a single decorative cover are circular, semicircular or elongated, and the shapes of the hollow holes on different decorative covers are different.

[0028] Furthermore, the radius of the circular hollow hole is consistent with or close to the radius of the light-transmitting wall, so that the light-transmitting wall is exposed as a whole;

[0029] The radius of the semicircular hollow hole is consistent with or close to the radius of the light-transmitting wall, so that the semicircular portion on one side of the light-transmitting wall is exposed and the semicircular portion on the other side is blocked by the decorative cover;

[0030] There are at least two long strip hollow holes arranged side by side, so that the part of the decorative cover corresponding to the light-transmitting wall is in a grid shape.

[0031] In this way, the decorative cover with circular hollow holes will not block the light, so that almost all the light emitted by the lamp body can be emitted, and it is brighter when illuminated; the decorative cover with semicircular hollow holes can block half of the light, making the brightness of the ceiling lamp lower; the decorative cover with long hollow holes will produce a grille-shaped shadow when the ceiling lamp is illuminated.

[0032] Compared with the prior art, the utility model has the following advantages: the utility model provides a power supply unit for supplying power to the induction module in the induction module. When the lamp body is used in an occasion where the induction module is required, the input end of the power supply unit in the induction module is electrically connected to the output end of the AC / DC conversion unit in the driving module. There is no need to provide a power supply module in the driving module, so that the driving module can be designed in a standardized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model (a decorative cover with a circular hollow hole is arranged at the bottom of the shell);

[0034] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model (the decorative cover with a circular hollow hole is separated from the shell);

[0035] Figure 3 for Figure 1 3D exploded view of the medium ceiling light;

[0036] Figure 4 for Figure 1 Cross-sectional view of the middle ceiling lamp;

[0037] Figure 5 This is a schematic structural diagram of a decorative cover with a circular hollow hole in an embodiment of the utility model;

[0038] Figure 6 This is a schematic diagram of the structure of the lamp cover in the embodiment of the utility model;

[0039] Figure 7 This is a schematic diagram of the structure of an embodiment of the utility model (a decorative cover with strip-shaped hollow holes is arranged at the bottom of the shell);

[0040] Figure 8 It is a structural schematic diagram of an embodiment of the utility model (the decorative cover with strip-shaped hollow holes is separated from the housing);

[0041] Fig. 9 It is a schematic diagram of the structure of an embodiment of the utility model (the decorative cover with semicircular hollow holes is separated from the shell);

[0042] Fig.10 This is a partial structural diagram of an embodiment of the utility model (the lamp cover, lamp body and decorative cover are omitted);

[0043] Fig.11 This is a principle block diagram of a driving module according to an embodiment of the utility model;

[0044] Fig.12 This is a principle block diagram of the sensing module according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0046] like Figures 1 to 12 As shown in FIG. 1 , a preferred embodiment of a ceiling lamp of the utility model is shown. The ceiling lamp comprises a housing 1 , a lamp body 2 , a decorative cover 3 , a shading strip 4 , a sealing ring 5 and screws 6 .

[0047] The housing 1 includes a lamp holder 1a and a lamp cover 1b. The interior of the lamp holder 1a is hollow to form a cavity with an open bottom. The bottom of the lamp holder 1a is provided with an annular groove 14 circumferentially located outside the opening and with a notch facing downward. The lamp cover 1b has a cover plate and a side plate 15 extending upward from the circumference of the cover plate. The upper edge of the side plate 15 is inserted into the annular groove 14 and can rotate circumferentially along the annular groove 14. The cover plate of the lamp cover 1b serves as the bottom wall of the housing 1 to block the opening of the lamp holder 1a, and the central part of the cover plate is a circular, light-transmitting wall 11. In order to screw the lamp holder 1a and the lamp cover 1b together, a buckle is provided between the lamp holder 1a and the lamp cover 1b, which enables the lamp cover 1b to be buckled together after being rotated in a first direction clockwise or counterclockwise relative to the lamp holder 1a, and the buckle is arranged to release the buckling effect after the lamp cover 1b is rotated in a second direction opposite to the first direction relative to the lamp holder 1a. Specifically, as Figure 4 , 6 As shown, the lamp holder 1a is provided with a first vertical plate 16 extending downward and a first horizontal plate 17 extending along the second direction after being folded from the lower end of the first vertical plate 16. The cover plate of the lamp cover 1b is provided with a second vertical plate 18 extending upward and a second horizontal plate 19 extending outward after being folded from the upper end of the second vertical plate 18. The second horizontal plate 19 is stacked on the top of the first horizontal plate 17 and is separated from the first horizontal plate 17 after the cover plate is rotated along the second direction; the first vertical plate 16, the first horizontal plate 17, the second vertical plate 18 and the second horizontal plate 19 constitute the above-mentioned fastening member. The above-mentioned sealing ring 5 is arranged in the annular groove 14, and the lower end surface of the sealing ring 5 abuts against the upper edge of the side plate 15 of the lamp cover 1b, so that the second horizontal plate 19 on the lamp cover 1b is pressed against the top of the first horizontal plate 17. In this way, the lamp holder 1a and the lamp cover 1b are pressed against each other up and down to prevent relative rotation in the circumferential direction and separation in an accidental situation. When the lamp cover 1b needs to be removed, the lamp cover 1b can be rotated along the second direction, which is convenient for operation.

[0048] The shank of the screw 6 passes through the outer portion of the cover plate of the lamp cover 1b and is connected to the lamp holder 1a to further connect the lamp holder 1a and the lamp cover 1b. At this time, only when the screw 6 is unscrewed, the lamp cover 1b can rotate relative to the lamp holder 1a and separate from the lamp holder 1a.

[0049] The lamp body 2 is disposed in the housing 1 and can emit light toward the light-transmitting wall 11 .

[0050] There are three decorative covers 3, which are selectively and detachably mounted on the outside of the bottom wall of the housing 1, and the portion of the decorative cover 3 corresponding to the light-transmitting wall 11 is provided with a hollow hole 30 for light to be emitted, and the hollow holes 30 on different decorative covers 3 are different in area and shape. Figures 1 to 3 , Figure 5 As shown, the hollow hole 30 of the first decorative cover is circular, and the radius of the circular hollow hole is consistent with or close to the radius of the light-transmitting wall 11, so that the light-transmitting wall 11 is exposed as a whole; Fig. 9 As shown, the hollow hole 30 of the second decorative cover is semicircular, and the radius of the semicircular hollow hole is consistent with or close to the radius of the light-transmitting wall 11, so that the semicircular part on one side of the light-transmitting wall 11 is exposed, and the semicircular part on the other side is blocked by the decorative cover 3; Figure 7 , 8 As shown, the hollow holes 30 of the third decorative cover are in the shape of an elongated strip, and there are a plurality of the elongated hollow holes arranged side by side, so that the portion of the decorative cover 3 corresponding to the light-transmitting wall 11 is in the shape of a grid.

[0051] In order to make the decorative cover 3 and the housing 1 restrained together in a detachable manner, as shown in FIG. Figures 2 to 5 As shown, each decorative cover 3 of the present embodiment includes a first bottom wall 31 with a hollow hole 30, and a first side wall 32 extending upward from the periphery of the first bottom wall 31, the first bottom wall 31 is located below the bottom wall of the shell 1, the first side wall 32 is located outside the side wall of the shell 1, and the inner side surface of the first side wall 32 is provided with a first convex strip extending up and down as a first buckle 321, and the outer side surface of the shell 1 is provided with a strip groove for the first convex strip to be snapped into as a first snap groove 12, and the matching first buckle 321 and the first snap groove 12 form a group, and there are at least two groups and they are arranged at intervals along the circumferential direction. At the same time, the upper surface of the first bottom wall 31 is provided with a radially extending second convex strip as a second snap-on buckle 311, and the outer portion of the bottom wall of the shell 1 is provided with a groove for the second convex strip to be snapped into as a second snap-on slot 13, and the matching second snap-on slot 13 and second snap-on buckle 311 form a group, there are at least two groups, and they are arranged at intervals along the circumferential direction. In this way, during assembly, one of the decorative covers 3 is placed outside the bottom wall of the shell, and the first bottom wall 31 of the decorative cover 3 is pressed upward, and the first side wall 32 of the decorative cover 3 is pressed inward, so that the first snap-on buckle 321 and the first snap-on slot 12 can be fastened, and the second snap-on buckle 311 and the second snap-on slot 13 can be fastened, thereby completing the assembly and facilitating operation.

[0052] like Figure 5 As shown, the shading strip 4 is circumferentially disposed on the inner periphery of the first side wall 32 of the decorative cover 3 and is disposed corresponding to the lower edge of the first side wall 32 to prevent light leakage.

[0053] In this embodiment, one of the decorative covers 3 can be selected and installed on the housing 1 according to the usage scenario and the user's preference, so as to obtain different lighting effects.

[0054] like Figures 10-12 As shown, the ceiling lamp of this embodiment further includes a driving module 7 and a sensing module 8 , both of which are disposed in the lamp holder 1 a of the housing 1 .

[0055] The driving module 7 is used to drive the lamp body 2 to work, and the driving module 7 is provided with an AC / DC conversion unit 71 for converting AC power from the mains into DC power, and a driving unit 72 electrically connected to the output end of the AC / DC conversion unit 71, and the output end of the driving unit 72 is electrically connected to the light source of the lamp body. The sensing module 8 is electrically connected to the driving module 7, and is used to sense the human body and feed back the signal to the driving module 7, and the sensing module 8 is provided with a power supply unit 81 for supplying power to the sensing module 8, and the input end of the power supply unit 81 is electrically connected to the output end of the AC / DC conversion unit 71.

[0056] In this embodiment, the induction module 8 is an existing microwave induction module, and the power supply unit 81 includes a filter circuit 81a, a step-down circuit 81b and a voltage divider circuit 81c which are electrically connected in sequence. The filter circuit includes a diode D13, an inductor L11, a capacitor C12, and an electrolytic capacitor C11. The positive electrode of the diode D13 is connected to the output end of the AC / DC conversion unit 71, and the negative electrode of the diode D13 is connected to one end of the inductor L11; one end of the capacitor C12 is connected between the connection line of the diode D13 and the inductor L11, and the other end of the capacitor C12 is connected to the negative electrode of the electrolytic capacitor C11. The positive electrode of the electrolytic capacitor C11 is connected to the other end of the inductor L11 and then electrically connected to the input end of the step-down circuit 81b as the output end of the filter circuit 81a. In this embodiment, the step-down circuit 81b is a conventional non-isolated step-down circuit, and a non-isolated step-down constant voltage driver chip U11 with a model number of BP2522B is used. The input end of the voltage divider circuit 81c is electrically connected to the output end of the voltage step-down circuit 81b, and the output end of the voltage divider circuit 81c is electrically connected to the sensing module 8. Fig.12 As shown, the voltage dividing circuit 81c includes two voltage dividing resistors R12 and R16 connected in series.

[0057] The AC / DC conversion unit 71 includes a transformer 71a and a rectifier bridge BD1 which are electrically connected in sequence. The transformer 71a is a prior art and its input end is connected to the mains. The DC positive output end of the rectifier bridge BD1 is connected to the input end of the drive unit 72 and the power supply unit 81, and the DC negative output end of the rectifier bridge BD1 is grounded. In this embodiment, the DC positive output end of the rectifier bridge BD1 is electrically connected to the input end of the power supply unit 81 through the terminal J1.

[0058] The driving unit 72 includes a driving chip U1 (model BP2956F, a high-precision buck-type LED constant current driving chip supporting PWM input dimming), whose power supply end is connected to the DC positive output end of the rectifier bridge BD1, and whose PWM signal end is connected (communication) to the sensing module 8. The sensing module 8 outputs a control signal after being triggered by the human body, so that the driving chip U1 can output a voltage to drive the lamp body 2 according to the received signal. The other components of the driving unit, PWM dimming and the principle of driving the light source in this embodiment are the same as those in the prior art, and will not be repeated here.

[0059] In the specification and claims of the present invention, terms indicating directions, such as "upper", "lower", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0060] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

[0061] The term "radial" is also used in the specification and claims of the present utility model, which means basically along the inward and outward direction, and is not limited to the radial direction passing through the center of the circle, and can also be slightly deviated from the radial direction.

Claims

1. A ceiling lamp, comprising: Lamp body (2); A driving module (7) for driving the lamp body to work, comprising an AC / DC conversion unit (71) for converting AC power from a mains supply into DC power, and a driving unit (72) electrically connected to an output end of the AC / DC conversion unit (71), wherein the output end of the driving unit (72) is electrically connected to a light source of the lamp body (2); A sensing module (8), electrically connected to the driving module (7), and configured to sense the human body and feed back a signal to the driving module (7); Features: The sensing module (8) is provided with a power supply unit (81) for supplying power to the sensing module (8), and an input end of the power supply unit (81) is electrically connected to an output end of the AC / DC conversion unit (71).

2. The ceiling lamp according to claim 1, characterized in that: The induction module (8) is a microwave induction module.

3. The ceiling lamp according to claim 2, characterized in that: The power supply unit (81) comprises a filter circuit (81a), a voltage-reducing circuit (81b) and a voltage-dividing circuit (81c) which are electrically connected in sequence; the input end of the filter circuit (81a) is electrically connected to the output end of the AC / DC conversion unit (71); and the output end of the voltage-dividing circuit (81c) is electrically connected to the induction module (8).

4. The ceiling lamp according to claim 3, characterized in that: The filter circuit comprises a diode (D13), an inductor (L11), a capacitor (C12), and an electrolytic capacitor (C11); the positive electrode of the diode (D13) is connected to the output end of the AC / DC conversion unit (71), and the negative electrode of the diode (D13) is connected to one end of the inductor (L11); one end of the capacitor (C12) is connected between the connection line of the diode (D13) and the inductor (L11), the other end of the capacitor (C12) is connected to the negative electrode of the electrolytic capacitor (C11), and the positive electrode of the electrolytic capacitor (C11) is connected to the other end of the inductor (L11) to serve as the output end of the filter circuit (81a).

5. The ceiling lamp according to claim 2, characterized in that: The AC / DC conversion unit (71) comprises a transformer (71a) and a rectifier bridge (BD1) which are electrically connected in sequence, the input end of the transformer (71a) is connected to the mains, the DC positive output end of the rectifier bridge (BD1) is connected to the drive unit (72) and the input end of the power supply unit (81), and the DC negative output end of the rectifier bridge (BD1) is grounded.

6. The ceiling lamp according to claim 5, characterized in that: The driving unit (72) comprises a driving chip (U1), a power supply end of which is connected to the DC positive output end of the rectifier bridge (BD1), and a PWM signal end of which is connected to the induction module (8).

7. The ceiling lamp according to any one of claims 1 to 6, characterized in that: The ceiling lamp also includes: A housing (1) having a cavity therein, wherein at least a portion of the bottom wall thereof is a light-transmitting wall (11); At least two decorative covers (3) are selectively and detachably mounted on the outside of the bottom wall of the housing (1), and portions of the decorative covers (3) corresponding to the light-transmitting wall (11) are provided with hollow holes (30) for light to be emitted, and the hollow holes (30) on different decorative covers (3) have different areas and / or shapes; The lamp body (2) is arranged in the housing (1) and can emit light toward the light-transmitting wall (11).

8. The ceiling lamp according to claim 7, characterized in that: The light-transmitting wall (11) is circular, the hollow holes (30) on a single decorative cover (3) are circular, semicircular or elongated, and the hollow holes (30) on different decorative covers (3) have different shapes.

9. The ceiling lamp according to claim 8, characterized in that: The radius of the circular hollow hole is consistent with or close to the radius of the light-transmitting wall (11), so that the light-transmitting wall (11) is exposed as a whole; The radius of the semicircular hollow hole is consistent with or close to the radius of the light-transmitting wall (11), so that the semicircular portion on one side of the light-transmitting wall (11) is exposed, and the semicircular portion on the other side is covered by the decorative cover (3); There are at least two long hollow holes arranged side by side, so that the portion of the decorative cover (3) corresponding to the light-transmitting wall (11) is in a grid shape.

Images