Abstract: An LED decorative lamp, having a lampholder body, a blocking member, an LED, and leads; the lampholder body is provided with a channel longitudinally penetrating both ends at a first opening and a second opening of the lampholder body; the LED, the leads, and the blocking member are arranged in the channel; the LED extends out of the second opening, the blocking member has a blocking end and a separation end, the blocking end is arranged in the channel and is in interference fit with the first opening, and the separation end is arranged in the channel and extends towards the second opening so as to be positioned between the two poles of the LED. A production process of the LED decorative lamp is provided.

Abstract: An LED decorative lamp, having a lampholder body, a blocking member, an LED, and leads; the lampholder body is provided with a channel longitudinally penetrating both ends at a first opening and a second opening of the lampholder body; the LED, the leads, and the blocking member are arranged in the channel; the LED extends out of the second opening, the blocking member has a blocking end and a separation end, the blocking end is arranged in the channel and is in interference fit with the first opening, and the separation end is arranged in the channel and extends towards the second opening so as to be positioned between the two poles of the LED. A production process of the LED decorative lamp is provided.

Abstract: A sofa with adjustable coupled headrest and backrest includes a base movably connected with a side panel and a coupling sheet for backrest hinged at the side panel, and a backrest assembly including a connection element of backrest with a front end hinged at a rear end of the side panel at an upper positionn and a connection rod of backrest with an upper end hinged at a rear end of the connection element of backrest, and with a lower end hinged at the coupling sheet for backrest, the base is provided with a drive member to switch a backrest frame to a lying position, and a coupling assembly for headrest configured to force the connection element for headrest to flip relative to a backrest skeleton is provided between the connection rod of backrest and the connection element for headrest.

Abstract: An LED lamp with a good dynamic effect, having a lamp body and a photoelectric circuit; an empty cavity is formed inside the lamp body; the photoelectric circuit is installed in the empty cavity; the photoelectric circuit comprises a power supply input end, an alternating current/direct current management circuit, a light-emitting power supply circuit and a light-emitting assembly; the lamp body is internally provided with a PCB board; the power supply input end, the alternating current/direct current management circuit, the light-emitting power supply circuit and the light-emitting assembly are respectively arranged on the PCB board.

Abstract: A lamp, having a lampshade, a lamp holder, a connective structure, a light source component, and a power supply component; the lampshade has a cover body and a mounting seat; one end being defined as a first end of the connective structure is connected with the lampshade, with another end being defined as a third end connected with the lamp holder; the mounting seat is mounted to the first end; the lamp holder is fitted with the third end; a rotation prevention structure between the mounting seat and the first end is given to prevent rotation of the lampshade relative to the connective structure; the rotation prevention structure contains anti-rotation ribs and anti-rotation grooves corresponding to the anti-rotation ribs; the anti-rotation ribs are fitted in the anti-rotation grooves.

Abstract: An ammonia synthesis system and a control method thereof are provided. The ammonia synthesis system includes a hydrogen supply device, where a fluctuating amount of hydrogen is provided by the hydrogen supply device; a hydrogen storage container configured to store the hydrogen provided by the hydrogen supply device; and a nitrogen supply device configured to communicate with the hydrogen storage container to introduce nitrogen into the hydrogen storage container to maintain a stable pressure in the hydrogen storage container. The nitrogen supply device is able to introduce nitrogen into the hydrogen storage container, thus the amount of hydrogen provided is stable; in addition, the ammonia synthesis system can not only meet requirements of application scenarios where synthesis gas is produced from conventional raw material, but also be well applied to application scenarios where hydrogen for ammonia synthesis is obtained from hydrogen generation by green electricity.

Abstract: An LED decorative bulb and an LED lamp string containing a plurality of LED decorative bulbs. Each LED decorative bulb contains a housing and a light source assembly inside the housing; the light source assembly has a driving circuit and some LED light sources; the driving circuit contains a rectifier, a digital signal decoder, a plurality of switch tubes, a diode, a capacitor, a first power supply end and a second power supply end; the driving circuit and the LED light sources are so connected such that the LED light sources receives higher voltages to increase brightness and thereby enhancing the decorative effects.

Abstract: A lamp, having a lampshade, a lamp holder, a connective structure, a light source component, and a power supply component; the lampshade has a cover body and a mounting seat; one end being defined as a first end of the connective structure is connected with the lampshade, with another end being defined as a third end connected with the lamp holder; the mounting seat is mounted to the first end; the lamp holder is fitted with the third end; a rotation prevention structure between the mounting seat and the first end is given to prevent rotation of the lampshade relative to the connective structure; the rotation prevention structure contains anti-rotation ribs and anti-rotation grooves corresponding to the anti-rotation ribs; the anti-rotation ribs are fitted in the anti-rotation grooves.

Abstract: The present application relates to sofa with a turnable backrest, including a sofa seat frame, a backrest body, and an extension mechanism, wherein the backrest body is connected to the sofa seat frame through the extension mechanism; the extension mechanism is configured to turn and flatten the backrest body from a backrest position of the sofa seat frame to a position above a sitting position, and configured to turn the backrest body back to the backrest position.

Abstract: The present application relates to a sofa unfolding device capable of avoiding forward overturning, including a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via the linkage assembly, the leg rest assembly is rotatably connected to a front end of the seat via the linkage assembly, a support mechanism is connected on the front end of the seat and comprises an abutting member and a support member, the abutting member is rotatably connected with the linkage assembly via a first pivot, and the support member is rotatably connected with the abutting assembly via a second pivot and is rotatably connected with the seat via a third pivot.

Abstract: An LED circuit board that includes an insulation board provided with connecting holes and a holding column, and at least two circuit boards; a first circuit board has a through hole, and a second circuit board has connecting columns; the connecting columns are detachably inserted in the connecting holes; the holding column is detachably inserted in the through hole; the insulation board is made of fire-retardant and fire-resistant plastic material.

Abstract: The present application relates to an unfolding device of sofa, including a base. A side plate is provided above the base, and a connecting rod assembly is connected between the side plate and the base; the side plate is provided with a mounting assembly for connecting to a sitting portion; a footrest assembly and a backrest connecting member is mounted on and rotatably connected with the side plate; the base is provided with a driving assembly, configured for driving the footrest assembly to rotate and the side plate to move towards a front of the unfolding device.

Abstract: The present application relates to an unfolding device of sofa, including a base. A side plate is provided above the base, and a connecting rod assembly is connected between the side plate and the base; the side plate is provided with a mounting assembly for connecting to a sitting portion; a footrest assembly and a backrest connecting member is mounted on and rotatably connected with the side plate; the base is provided with a driving assembly, configured for driving the footrest assembly to rotate and the side plate to move towards a front of the unfolding device.

Abstract: The present invention provides a patch LED light bulb comprising a lampshade and a base. It further comprises a light source baseboard and a power supply board which are disposed inside the lampshade and electrically connected to each other. The light source baseboard is pasted or soldered with more than one LED chip. The lampshade comprises a cover body and an assembly portion integrally connected to the cover body. The assembly portion is inserted into the base. A limiting slot is provided on the assembly portion. A positioning slot is provided on the light source baseboard. The power supply board abuts against the light source baseboard and is perpendicular to the light source baseboard. The power supply board is integrally connected with a limiting protrusion for inserting to the limiting slot and a positioning protrusion for inserting the positioning slot.

Abstract: The present invention provides an LED light bulb comprising a transparent lampshade, a base, a transparent stem, a transparent seat, a power supply board fixedly mounted on the transparent seat, a first rigid conductive wire passing through the transparent stem, second rigid conductive wires passing through the transparent stem and connecting to the power supply board, and LED filaments fixedly connected to the first rigid conductive wire and the second rigid conductive wires. The second rigid conductive wires are two in number. The LED filaments are two or more in number. Each of the LED filaments are evenly distributed around the transparent stem, and each of the second rigid conductive wires is connected to at least one of the LED filaments.

Abstract: The present invention provides a retro LED light bulb comprising a transparent lampshade and a base fixedly connected with the transparent lampshade. It further comprises a transparent stem inside the transparent lampshade, a power supply board fixedly mounted on the transparent stem, rigid conductive wires passing through the transparent stem and connecting to the power supply board, and an LED filament fixedly connected to the rigid conductive wires; the rigid conductive wires are two in number; the LED filament is in U-shape; two ends of the LED filament are respectively connected to the rigid conductive wires as one-to-one connection. Since the LED filament is supported by the rigid conductive wires, and the LED filament is bent into a U-shape, the light emitted by the LED filament will not be blocked by the stem easily, resulting in more uniform light and better illumination effect.

Abstract: The present invention discloses a quick mounting holder structure for sinking mechanical extension device of functional sofa, which includes a mounting support, a stretchable component, a backrest component, and a main body. The mounting support, the stretchable component, the backrest component are rotatably installed in the main body. The mounting support includes a crossbeam and at least one mounting piece. The crossbeam includes a side panel. At least one mounting piece is fixed on the side panel and is perpendicular to the side panel. The mounting support and wooden frame are fixed by an electric drill using a screw through the mounting hole. The operation is simple and quick. Further, at least one mounting piece is fixed on the side panel, lowering the mounting height, so that the height of the whole sofa and rocking chair is lowered. Thus, the comfortableness of the user is improved.

Abstract: An electrical mechanical stretching device of a movable sofa includes a mechanical stretching device and an electrical device, wherein the mechanical stretching device includes a third leg rod and a third connecting rod. The electrical device consists of a motor sliding block connecting pipe, a motor, a motor leg fixing pipe, a motor guide rail and a motor sliding block. The motor is provided with the motor guide rail. The motor sliding block is mounted on the motor guide rail. A motor end is rotatably connected via a second rotating shaft to the motor leg fixing pipe which is fixed on the third leg rod. The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe which is fixed on the third connecting rod. A base of the mechanical stretching device is connected by two bottom connecting pipes.

Abstract: The present invention discloses a quick mounting holder structure for sinking mechanical extension device of functional sofa, which includes a mounting support, a stretchable component, a backrest component, and a main body. The mounting support, the stretchable component, the backrest component are rotatably installed in the main body. The mounting support includes a crossbeam and at least one mounting piece. The crossbeam includes a side panel. At least one mounting piece is fixed on the side panel and is perpendicular to the side panel. The mounting support and wooden frame are fixed by an electric drill using a screw through the mounting hole. The operation is simple and quick. Further, at least one mounting piece is fixed on the side panel, lowering the mounting height, so that the height of the whole sofa and rocking chair is lowered. Thus, the comfortableness of the user is improved.

Abstract: A sofa waist propping device includes a frame and a waist adjusting mechanism, the frame being fixed on a sofa or a seat, the waist adjusting mechanism comprising a backrest and a first driving member rotatably connected to the frame respectively, the first driving member being rotatably connected to the backrest and driving the backrest to rotate around the frame. Since the first driving member is rotatably connected to the backrest and drives the backrest to rotate around a fixing member, the position of the backrest is adjusted, with a structure simple and stable and comfortableness increased.