Patent Description:
In small household appliances, in electric kettles, coffee pots, health pots, steamers and other electrical products, the power base is widely used. Generally, the power base adopts mechanical keys and fewer touch bases, and the overall function configuration is too single without too many innovative changes. First, the mechanical key structure comprises a face shell and a base bottom, the face shell is installed on the line base bottom. A circuit board and a coupler (a base connector) for connecting the upper kettle are installed between the face shell and the base bottom. The face shell is provided with a key which is provided with a switch touch boss. An elastic silica gel sheet is provided between the key and the touch switch of the circuit board, and a pressure plate is provided around the elastic silica gel sheet to press and seal or make a drainage hole. In this structure, there is a gap between the key and the face shell. The gap is easy to be blocked and stuck by foreign matters, and water is easy to accumulate between the key and the elastic silica gel sheet. The elastic silica gel sheet will accelerate aging and lose its elasticity at the stressed position which is pressed for a long time. In severe cases, it will also be cracked and damaged and cannot be safely sealed, which may cause the risk of electric leakage or electric shock, thus shortening the service life of the power supply base to a certain extent. Second, generally, the structure key guide sign of the conventional in-use touch power supply base adopts the film pasting technology. This technology has a small film pasting sheet, poor position and easy edge leakage. There are too many dust spots, and the edges are easy to be embossed and warped. At the same time, the light transmission effect is uneven and easily light escaping, which cannot meet the requirements of higher-grade products. Alternatively, a small number of touch-type power base surface shells will adopt IMD in-mold injection molding technology, which can provide products with better surface wear-resistant and chemical-resistant characteristics and diversified styles, and can create technical features such as metal plating or special styles of natural materials according to customer requirements. However, IMD technology needs smooth appearance to meet the manufacturing process, which has great restrictions on structural modeling design. The mold cost and unit price cost of this technology are very high. At present, this technology cannot meet the popularization and application of multi-modeling power sockets.

A known power supply base is described in <CIT>, said power supply base comprising capacitive touch keys, a face shell, a bottom cover, a base connector, a control circuit board and a power cord. A touch spring and an indicator lamp are also provided.

The technical problem to be solved by the present disclosure is to provide a power supply socket with vibration touch keys for electric kettles, coffee pots, health pots, steamers and other products with good waterproof, dustproof and LED light guiding effects.

In order to solve the above technical problems, a power supply base according to the invention is defined in appended independent claim <NUM>.

The key of the present disclosure has good waterproof, dustproof, LED light guiding, vibrating effects.

The present disclosure will be described in further detail with reference to the accompanying drawings.

As shown in <FIG>, a power supply base with vibration touch keys comprises a face shell <NUM>, a bottom cover <NUM>, a vibration motor <NUM>, a base connector <NUM>, a control circuit board <NUM>, a power cord <NUM>, a foot pad <NUM>, a touch key transparent aperture <NUM>, a lamp strip progress bar <NUM> and a knob A. As shown in <FIG> and <FIG>, the inner side of the face shell <NUM> is provided with a slot for installing a vibration motor 2a. A vibration motor <NUM> is installed in the slot. The vibration surface of the vibration motor <NUM> is in close contact with the bottom plane of the slot 2a. In order to ensure the reliability of this contact, the vibration surface of the vibration motor <NUM> is provided with an adhesive layer <NUM>-<NUM> which is tightly bonded with the bottom plane of the installing groove 2a. The back surface of the vibration motor is pressed by a motor fixing base <NUM>. An elastic buffer material layer <NUM>-<NUM> is provided between the vibration motor <NUM> and the motor fixing base <NUM> to protect the vibration motor <NUM> from crushing and reduce noise. The lead wire <NUM>-<NUM> of the vibration motor <NUM> is electrically connected with the control circuit board <NUM>. When the finger touches a key, the vibration motor will have synchronous tactile signal feedback, which brings different touch experiences to the user. The face shell <NUM> is provided with a touch key installing hole 2b. A touch key transparent aperture <NUM> is installed on the touch key installing hole 2b. An inner ring of the touch key transparent aperture <NUM> is provided with a touch decorative sheet <NUM>. A first sealing ring <NUM> is provided between the touch key transparent aperture <NUM> and the face shell <NUM>. A transparent aperture fixing base <NUM> is provided below the touch key transparent aperture <NUM>. The touch key transparent aperture <NUM> and the touch decorative sheet <NUM> are located above the transparent aperture fixing base <NUM>. The fixing base through hole <NUM>-<NUM> is provided at the middle position of the transparent aperture fixing base <NUM> corresponding to finger touch, and a touch spring <NUM>-<NUM> on the control circuit board and an indicator lamp <NUM>-<NUM> are installed in the middle of the fixing base through hole <NUM>-<NUM>. The touch end of the touch spring <NUM>-<NUM> abuts against with the inner surface of the touch key transparent aperture <NUM>. The abutting surface <NUM>-<NUM> of the touch key transparent aperture <NUM> and the touch decorative sheet <NUM> is right at the position of the touch spring <NUM>-<NUM>, and no gap is reserved in the design, which is beneficial to touch sensitivity debugging. The face shell <NUM> is provided with a lamp strip installing hole 2c. A lamp strip progress bar <NUM> is installed at the lamp strip installing hole 2c. The lamp strip progress bar <NUM> consists of a plurality of lamp strip posts <NUM>-<NUM>. The bottom end of the lamp strip posts <NUM>-<NUM> is provided with an abutting table <NUM>-<NUM>. A second sealing ring <NUM> is provided between the abutting table <NUM>-<NUM> and the face shell <NUM>. A lamp strip post fixing base <NUM> for fixing the lamp strip post is provided below the lamp strip post <NUM>-<NUM>. A lamp strip post through hole <NUM>-<NUM> is provided in the middle of the lamp strip post fixing base <NUM> corresponding to the lamp strip post <NUM>-<NUM>, and a lamp strip indicator lamp <NUM>-<NUM> of the control circuit board is installed in the middle of the lamp strip post through hole <NUM>-<NUM>. The function of the lamp strip progress bar <NUM> is to make cooking say goodbye to blind guessing and make the cooking progress clear at a glance.

As shown in <FIG>, <FIG>, <FIG> and <FIG>, according to the requirements of product function configuration, a multi-function knob A can be flexibly configured on the touch key-type power cord base. The function knob A mainly consists of a knob <NUM>, a knob transparent aperture <NUM>, a knob decorative sheet <NUM>, a knob spring <NUM> and a sliding post <NUM>. The face shell <NUM> is provided with a second installing hole 2d for installing the knob <NUM>. A plurality of gear grooves <NUM>-<NUM>, a knob abutting surface <NUM>-<NUM>, a limiting I bump <NUM>-<NUM> and a limiting II bump <NUM>-<NUM> are provided in the second installing hole 2d, as shown in <FIG>. The knob <NUM> is provided with a knob installing hole 7a, a recess <NUM>-<NUM> and a female buckle <NUM>-<NUM>, as shown in <FIG>. As shown in <FIG>, <FIG>, the knob transparent aperture <NUM> comprises a centering shaft <NUM>-<NUM>, a potentiometer knob bolt <NUM>-<NUM>, an elastic buckle <NUM>-<NUM>, a male buckle <NUM>-<NUM>, a sealing convex rib <NUM>-<NUM>, a limiting convex rib <NUM>-<NUM>, an abutting surface convex rib <NUM>-<NUM>, an accommodating hole <NUM>-<NUM> and a rotation limiting rib <NUM>-<NUM>. As shown in <FIG> and <FIG>, the knob transparent aperture <NUM> is fixed on the knob installing hole 7a. The limiting convex rib <NUM>-<NUM> of the knob transparent aperture coincides with the recess <NUM>-<NUM> of the knob <NUM>, and the male buckle <NUM>-<NUM> of the knob transparent aperture <NUM> is buckled with the female buckle <NUM>-<NUM> of the knob <NUM>. One end of the sliding post <NUM> is provided with a hollow hole <NUM>-<NUM>, and the other end of the sliding post <NUM> is provided with a round head <NUM>-<NUM>. One end of the sliding post <NUM> provided with a hollow hole <NUM>-<NUM> is placed in the accommodating hole <NUM>-<NUM> of the knob transparent aperture <NUM>, and the hollow hole <NUM>-<NUM> of the sliding post <NUM> is sleeved on the centering shaft <NUM>-<NUM> of the knob transparent aperture <NUM>. A knob spring <NUM> is provided between one end of the sliding post <NUM> provided with a hollow hole <NUM>-<NUM> and the accommodating hole <NUM>-<NUM> of the knob transparent aperture <NUM>. The centering shaft <NUM>-<NUM> of the knob transparent aperture <NUM> can prevent the sliding post <NUM> from being eccentric and crooked, which is beneficial to ensuring the linear expansion and contraction of the sliding post <NUM>. The function knob A is buckled and connected with the knob abutting surface <NUM>-<NUM> of the face shell <NUM> by the elastic buckle <NUM>-<NUM> on the knob transparent aperture <NUM>.

As shown in <FIG>, the potentiometer knob bolt <NUM>-<NUM> of the knob transparent aperture <NUM> is inserted into the gear rotary bushing <NUM>-4a of the potentiometer <NUM>-<NUM> on the control circuit board <NUM>. A plurality of indicator lamps <NUM>-<NUM> are provided around the potentiometer <NUM>-<NUM> of the circuit board. The indicator lamps <NUM>-<NUM> are provided between the control circuit board <NUM> and the knob transparent aperture <NUM>. A knob decorative sheet <NUM> is provided in the inner ring of the knob transparent aperture <NUM>. The assembly positioning manner of the knob decorative sheet <NUM> and the knob transparent aperture <NUM> is similar to the structure of the touch key transparent aperture <NUM> and the touch decorative sheet <NUM>. The structure will not be described in detail here.

As shown in <FIG>, the center of the function knob <NUM> has a bolt <NUM>-<NUM> connected to the potentiometer. The sliding post <NUM> and the knob spring <NUM> are installed through the function knob A. Every time the function knob <NUM> rotates to switch an angle, the bolt <NUM>-<NUM> of the potentiometer <NUM>-<NUM> drives the potentiometer gear rotating bushing <NUM>-4a to switch a function angle synchronously, and the sliding post <NUM> stretches and bounces into the corresponding gear groove <NUM>-<NUM>, thus realizing gear function selection. As shown in <FIG>, the gear groove <NUM>-<NUM> consists of a first sliding surface <NUM>-7a and a second sliding surface <NUM>-7b.

In an embodiment, as shown in <FIG>, the touch key transparent aperture <NUM> comprises an aperture ring <NUM>-<NUM>, a first polygonal positioning hole <NUM>-<NUM>, a first positioning rib gap <NUM>-<NUM>, a limiting bump <NUM>-<NUM> and a sealing convex rib <NUM>-<NUM>. A plurality of touch key transparent apertures <NUM> can be connected in series with a connecting arm <NUM>-<NUM> integrally, which is convenient for assembly, quick taking, mistake prevention and foolproof performance. Alternatively, apertures are independent according to structural requirements. A touch decorative sheet <NUM> is provided in the inner ring of the touch key transparent aperture <NUM>. The touch decorative sheet <NUM> is provided with a positioning post <NUM>-<NUM>, a first positioning rib <NUM>-<NUM> and an abutting surface <NUM>-<NUM>. The positioning post <NUM>-<NUM> is provided in the middle of the abutting surface <NUM>-<NUM>, and the first positioning rib <NUM>-<NUM> is arranged on the outer surface of the positioning post <NUM>-<NUM> along the axial direction of the positioning post <NUM>-<NUM>. The positioning post <NUM>-<NUM> of the touch decorative sheet abuts against the first polygonal positioning hole <NUM>-<NUM> of the touch key transparent aperture. The first positioning rib <NUM>-<NUM> of the touch decorative sheet <NUM> is matched with the first positioning rib gap <NUM>-<NUM> of the touch key transparent aperture. The angle of the first positioning rib gap <NUM>-<NUM> is the same as that of the first positioning rib <NUM>-<NUM>. According to the needs of functions, the plurality of touch key decorative sheets and the assembly positioning ribs of the transparent apertures can be set differently, so as to play the role of mistake prevention and foolproof performance in assembly. The face shell <NUM> is provided with a limiting notch <NUM>-<NUM>, a lamp strip limiting notch <NUM>-<NUM>, a key silica gel sealing groove <NUM>-<NUM> and a lamp strip silica gel sealing groove <NUM>-<NUM>. A touch key transparent aperture limiting bump <NUM>-<NUM> is matched with the limiting notch <NUM>-<NUM> of the face shell <NUM>.

In an embodiment, as shown in <FIG> and <FIG>, the lamp strip progress bar <NUM> comprises a lamp strip post <NUM>-<NUM>, a limiting rib <NUM>-<NUM> and a connecting arm <NUM>-<NUM>. The limiting rib <NUM>-<NUM> is matched with a lamp strip limiting notch <NUM>-<NUM> on the face shell <NUM>.

In an embodiment, the lights between all the transparent apertures of the present disclosure are designed to prevent light from escaping. As shown in <FIG>, <FIG> and <FIG>, the face shell <NUM> is provided with a key transparent aperture surrounding bone <NUM>-<NUM> and a lamp bar surrounding bone <NUM>-<NUM>. The transparent aperture fixing base <NUM> is provided with a first anti-light escaping surrounding bone <NUM>-<NUM>, and the lamp strip post fixing base <NUM> is provided with a second anti-light escaping surrounding bone <NUM>-<NUM>. The touch key transparent aperture <NUM> is placed in the first anti-light escaping surrounding bone <NUM>-<NUM>. The lamp strip of the lamp strip abutting platform <NUM>-<NUM> is accommodated in the second anti-light escaping surrounding bone <NUM>-<NUM>. The first anti-light escaping surrounding bone <NUM>-<NUM> abuts against the key transparent aperture surrounding bone <NUM>-<NUM>. The second anti-light escaping surrounding bone <NUM>-<NUM> abuts against the lamp strip surrounding bone <NUM>-<NUM>. The surrounding bone is abutted and separated layer by layer for the best anti-light escaping design. The transparent aperture fixing base <NUM> is provided with a lamp ring avoiding notch <NUM>-<NUM>, and the lamp strip post fixing base <NUM> is provided with a lamp strip avoiding notch <NUM>-<NUM>. A lamp ring limiting lug <NUM>-<NUM> corresponding to the lamp strip avoiding notch <NUM>-<NUM> and a lamp strip limiting rib <NUM> corresponding to the lamp strip avoiding notch <NUM>-<NUM> provide assembly retreating. The position of the avoiding notch key is not opposite to that of the key, and the position of the lamp is not opposite to that of the lamp gap, so as to prevent the light source between gaps from colliding with each other.

In an embodiment, the motor fixing base <NUM>, the transparent aperture fixing base <NUM> and the lamp strip post fixing base <NUM> are combined to form a fixing base <NUM>. Independent separation in design also falls within the protection scope of this embodiment.

In this embodiment, as shown in <FIG>, the touch key transparent aperture sealing ring <NUM>, the connecting arm <NUM>-<NUM> and the connecting arm <NUM>-<NUM> of the lamp strip progress bar sealing ring are connected integrally, which is convenient for assembly, quick taking, mistake prevention and foolproof performance. Alternatively, the silica gel rings between keys and between lamps are separated from each other, and the lamps are separated from each other's silica gel rings. Without departing from the spirit and scope of this embodiment, independent separation in design also falls within the protection scope of this embodiment.

In an embodiment not part of the claimed invention, as shown in <FIG>, the functional knob A is provided with an annular convex rib <NUM>-<NUM> on the face shell <NUM>. The annular convex rib <NUM>-<NUM> can prevent water droplets from flowing backwards into the knob, and can block water droplets from the knob to avoid circuit damage caused by flowing into the internal circuit board. The abutting mating surface between the knob <NUM> and the knob transparent aperture <NUM> is provided with a waterproof sealing rib <NUM>-<NUM> on the knob transparent aperture <NUM>.

The installing method of the function knob A is as follows. First, the knob spring <NUM> and the sliding post <NUM> are installed into the accommodating hole <NUM>-<NUM> of the knob transparent aperture, and simultaneously, the sliding post <NUM> is pressed by fingers to be folded into the accommodating hole <NUM>-<NUM>. Second, the sliding post <NUM> is aligned with the gear groove <NUM>-<NUM>. The elastic buckle <NUM>-<NUM> of the knob transparent aperture can stagger the limiting lugs <NUM>-<NUM> and the limiting lugs <NUM>-<NUM> of the face shell. Finally, the elastic buckle <NUM>-<NUM> is buckled into the face shell installing hole 2d and installed in place. In the buckling process, when the round head <NUM>-<NUM> of the sliding post touches the hole wall of the installing hole 2d, the finger pressing the sliding post is released, and then the function knob A can be installed in place by using the thrust force. After assembly, the sliding post <NUM> is restored and bounced into the gear groove <NUM>-<NUM> by the elasticity of the knob spring <NUM>.

In this embodiment, as shown in <FIG>, the sliding post <NUM> of the function knob A and the potentiometer bolt <NUM>-<NUM> are arranged vertically, which can be regarded as a first embodiment. The embodiment of the function knob A is not limited to this, and the following second, third and fourth embodiments will be further supplemented.

As shown in <FIG> and <FIG>, the structural schematic diagram of a second embodiment not part of the claimed invention of the function knob A in this example is shown. The embodiment is derived from the first embodiment. In the second embodiment of the function knob A, a knob transparent aperture bracket <NUM> and a sealing silica gel ring <NUM> are added. The sliding post <NUM> is placed between the knob transparent aperture <NUM> and the knob transparent aperture bracket <NUM> and is perpendicular to each other. In this embodiment, the sliding post <NUM> and potentiometer bolt <NUM>-<NUM> are arranged side by side, as shown in the figure. In the embodiment, the knob transparent aperture bracket <NUM> is provided with a gear groove <NUM>-<NUM>, a limiting bump <NUM>-<NUM> and a limiting bump <NUM>-<NUM>, a drainage pipe <NUM>-<NUM> and an annular surrounding bone <NUM>-<NUM>. A sealing silica gel ring <NUM> is provided between the knob transparent aperture bracket <NUM> and the face shell <NUM>. The drainage pipe <NUM>-<NUM> is directly connected to the bottom cover water leakage port <NUM>-<NUM>, and the annular surrounding bone <NUM>-<NUM> is inserted into the surrounding bone <NUM>-<NUM> and overlapped with each other. The function is to prevent the water droplets entering the knob from flowing backwards, and the entered water droplets can only be discharged out of the line base through the drainage pipe. In this embodiment, the knob transparent aperture bracket <NUM> is a transparent member. In this embodiment, simple modifications or improvements made by those skilled in the art, such as changing the gear groove <NUM>-<NUM> to the knob transparent aperture, changing the sliding post <NUM> to the knob transparent aperture bracket <NUM>, and exchanging the position, are considered to be within the protection scope of this embodiment.

As shown in <FIG> and <FIG>, the structural schematic diagram of a third embodiment not part of the claimed invention of the function knob A in this embodiment is shown. The third embodiment mainly explains that the knob decorative sheet is changed into a depressible knob key <NUM> on the basis of the above function knob. The potentiometer bolt <NUM>-<NUM> on the knob transparent aperture <NUM> is provided with a through hole <NUM>-2a. The knob key <NUM> is provided with a key pin <NUM>-<NUM> and a buckle position <NUM>-<NUM>. The key pin <NUM>-<NUM> is placed on the key switch <NUM>-<NUM> through the through hole <NUM>-2a. The elastic silica gel <NUM> is provided between the knob key <NUM> and the knob transparent aperture <NUM>. The elastic silica gel <NUM> plays a role in sealing and resetting the key press. In addition, the surface of the face shell <NUM> is coated with a layer of hardware face shell <NUM>, which can improve the product grade.

As shown in <FIG>, it is a separation schematic diagram of parts according to a second embodiment of the present disclosure. As shown in <FIG>, it is a schematic structural sectional view of a second embodiment. The difference from the first embodiment of <FIG> is that the touch key transparent aperture and the lamp strip progress bar in the described embodiment are secondary injection molding or two-color injection molding process, while the first sealing ring <NUM> and the second sealing ring <NUM> are omitted in this embodiment, the aperture <NUM> is a primary injection molding part, and the face shell <NUM> is a secondary injection molding part. As shown in <FIG>, it is a structural separation schematic diagram of a first embodiment in which the face shell <NUM> and the transparent aperture <NUM> perform mutual secondary injection molding in <FIG>. In the preferred embodiment, the transparent aperture <NUM> consists of an aperture <NUM>-<NUM>, a glue feeding notch <NUM>-<NUM>, a plurality of lamp strip progress bars <NUM>-<NUM>, a hole groove <NUM>-<NUM>, a first connecting arm <NUM>-<NUM>, a second connecting arm <NUM>-<NUM> and a third connecting arm <NUM>-<NUM> integrally. This integrated structure is beneficial to the secondary injection molding and positioning of parts. When choosing the two-color injection molding process, it can reduce the number of molds flowing to hot nozzles, so as to reduce the cost of molds. A touch wall <NUM>-<NUM> filled by secondary injection molding is provided in the inner ring of the transparent aperture <NUM>. The touch wall <NUM>-<NUM> is injection molded by dipping glue at the position of the glue feeding notch <NUM>-<NUM>. The touch wall <NUM>-<NUM> is integrated with the face shell <NUM> through the dipping glue arm <NUM>-<NUM>. The dipping glue arm <NUM>-<NUM> will have shadows when transmitting light. Therefore, the width of the glue feeding notch <NUM>-<NUM> is recommended to be about <NUM>. On the premise of satisfying the secondary injection molding process, the gap width should be as small as possible.

As shown in <FIG>, in order to avoid light escaping from the lamp source between the transparent aperture <NUM>-<NUM> and the lamp strip progress bar <NUM>-<NUM>, the fixing base <NUM> is provided with a spacer <NUM>-<NUM> inserted into the hole groove <NUM>-<NUM>. The face shell <NUM> is provided with a first surrounding bone <NUM>-<NUM> and a second surrounding bone <NUM>-<NUM>. The surrounding bone plays a role of light blocking, and its light blocking structure is similar to the first embodiment, which it will not be described in detail here.

As shown in <FIG>, it is a structural separation schematic diagram of a second embodiment in which the face shell <NUM> and the transparent aperture <NUM> perform mutual secondary injection molding in <FIG>. The difference from the first embodiment is that the connecting arm <NUM>-<NUM> of the transparent aperture <NUM> is provided with an external connection, and the distance between the connecting arm <NUM>-<NUM> and the touch key transparent aperture <NUM>-<NUM> is widened, so that the anti-light escaping effect is better than that of the first embodiment of <FIG>.

As shown in <FIG>, it is a structural separation schematic diagram of a third embodiment in which the face shell <NUM> and the transparent aperture <NUM> perform mutual secondary injection molding in <FIG>. The difference from the second embodiment is that the transparent aperture <NUM> is independently separated, and the anti-light escaping effect is better than that of the first and second embodiments.

Claim 1:
A power supply base with vibration touch keys, comprising a face shell (<NUM>), a bottom cover (<NUM>), a base connector (<NUM>), a control circuit board (<NUM>) and a power cord (<NUM>), wherein the inner side of the face shell (<NUM>) is provided with a slot (2a) for installing vibration motor , a vibration motor (<NUM>) is installed in the slot (2a), the vibration surface of the vibration motor (<NUM>) is in contact with the bottom plane of the slot (2a), the vibration motor (<NUM>) is electrically connected with the control circuit board (<NUM>), and the vibration motor is configured to have synchronous vibration signal feedback when a finger touches any of the vibration touch keys;
wherein
the face shell (<NUM>) is provided with a hole for installing touch key (2b), the hole (2b) is provided with a touch key transparent ring (<NUM>), a first sealing ring (<NUM>) is provided between the touch key transparent ring (<NUM>) and the face shell (<NUM>), a transparent ring fixing base (<NUM>) for fixing the touch key transparent ring is provided below the touch key transparent ring, the touch key transparent ring (<NUM>) is located above the transparent ring fixing base (<NUM>), the transparent ring fixing base (<NUM>) is provided with a fixing base through hole (<NUM>-<NUM>) at the middle position corresponding to finger touch, and a touch spring (<NUM>-<NUM>) on the control circuit board and an indicator lamp (<NUM>-<NUM>) are installed in the middle of the fixing base through hole (<NUM>-<NUM>);
the face shell (<NUM>) is provided with a lamp strip installing hole (2c), a lamp strip progress bar (<NUM>) is installed at the lamp strip installing hole (2c), the lamp strip progress bar (<NUM>) consists of a plurality of lamp strip posts (<NUM>-<NUM>), a second sealing ring (<NUM>) is provided between the lamp strip progress bar (<NUM>) and the face shell (<NUM>), a lamp strip post fixing base (<NUM>) for fixing the lamp strip post (<NUM>-<NUM>) is provided below the lamp strip post (<NUM>-<NUM>), a lamp strip post through hole (<NUM>-<NUM>) is provided in the middle of the lamp strip post fixing base (<NUM>) corresponding to the lamp strip post (<NUM>-<NUM>), and a lamp strip indicator lamp (<NUM>-<NUM>) is installed in the lamp strip post through hole (<NUM>-<NUM>).