Changeover plug

Abstract

The utility model discloses a change-over plug, which comprises a shell, a plug pin, a plug pin, a plug pin, a plug pin and a plug pin, the circuit board is located in the shell, the top side of the circuit board is connected with a power connection piece, the bottom side of the circuit board is connected with a power connection pin, a supporting section extending in the horizontal direction and an external connection section extending downwards are formed on the power connection pin, the supporting section abuts against the inner bottom side of the shell, the external connection section penetrates out of the through hole downwards, and the external connection section is connected with the power connection piece. The number of the power connection pins is at least two, and the power connection pins can not only play a role in connecting an external power supply, but also play a role in supporting the shell, so that the shell is not easy to deform or damage when being subjected to external force, the structural strength of the shell is effectively improved, and the practicability is stronger.

Description

Technical Field

[0001] The utility model relates to a conductive connecting device, in particular to a conversion plug. Background Art

[0002] A conversion plug is used to convert one form of plugging into another. The shell of the conversion plug usually includes a box body portion forming a cavity and a bottom cover portion covering and closing the cavity. The bottom cover is connected to the inner side of the box body through its outer edge. When the area of ​​the bottom cover is large or the thickness of the bottom cover is thin, the bottom cover position is easily deformed into the cavity under the action of external force, and the stability of the overall structure is poor. Therefore, a conversion plug with higher structural stability is urgently needed. Utility Model Content

[0003] The utility model aims to provide a conversion plug to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A conversion plug comprises: a shell, a top side of which is provided with a jack, and a bottom side of which is provided with a through hole; a circuit board located in the shell, the top side of the circuit board is connected to a power connection sheet, the bottom side of the circuit board is connected to a power connection pin, the power connection pin is formed with a support section extending in a horizontal direction and an external connection section extending downward, the support section abuts against the inner bottom side of the shell, the external connection section passes downward through the through hole, and the number of the power connection pins is at least two.

[0006] The technical solution has at least the following beneficial effects: a power connection pin that is plugged into a socket hole of an external device is connected to the bottom side of the circuit board, and a support section and an external connection section are formed on the power connection pin. The support section abuts against the inner bottom side of the shell, and can form a support position between the circuit board and the inner bottom side of the shell. When the inner bottom side of the shell is subjected to external force, the support provided by the power connection pin on the support section can prevent the inner bottom side of the shell from being easily deformed. According to the type of socket hole that needs to be converted, the number of power connection pins is at least two, and at least two support points for the inner bottom side of the shell are formed in the shell. When in use, the plug of the external device can be inserted into the jack on the top side of the shell, and the conversion plug is inserted into the socket hole of the external device through the external connection section on the power connection pin. Therefore, the power connection pin can not only connect the power supply of the external device, but also support the shell, so that the shell is not easily deformed or damaged when subjected to external force, effectively improving the structural strength of the shell and making it more practical.

[0007] As a further improvement of the above technical solution, a support rib protruding upward is formed on the inner bottom side of the housing on one side of the through hole, the support rib abuts against the bottom side of the support section, and a chamfer is provided at the top corner of the support rib close to the through hole. When the external connection section of the power connection pin needs to pass through the through hole, the chamfer structure provided on the support rib can guide the external connection section, making it easier for the external connection section to pass through the housing downward from the through hole, and using the support rib to abut against the support section, so as to realize further support and positioning of the inner bottom side of the housing.

[0008] As a further improvement of the above technical solution, a positioning rib protruding upward is formed on the inner bottom side of the housing on the side of the through hole, and the positioning rib extends around the through hole and is connected to both ends of the support rib. The positioning rib can further strengthen the structural strength of the inner bottom side of the housing, making it not easy for the inner bottom side of the housing to crack and deform, and the positioning rib extending around the through hole can enclose a space for limiting the external connection section, increasing the contact area with the external connection section, making it not easy for the external connection section to shake.

[0009] As a further improvement of the above technical solution, the power connection pin includes a connection section, the connection section is connected to one end of the support section and extends upward, the top end of the connection section is connected to the circuit board, and the external connection section is connected to the other end of the support section. The connection section, the support section and the external connection section are connected in sequence, and are bent at the connection to change the extension direction, realizing relative fixation with the circuit board through the connection section and realizing mutual electrical connection between the two.

[0010] As a further improvement of the above technical solution, a positioning step is provided at the top end of the connection section, a connection protrusion is formed on the part of the connection section beside the positioning step, the connection protrusion passes through the circuit board upward, and the bottom side of the circuit board abuts against the positioning step. When connecting the connection section to the circuit board, the connection protrusion is mainly used to pass through the circuit board upward to realize quick positioning of the two, and the positioning step is used to limit the upward insertion stroke of the connection section into the circuit board, improving the connection stability between the connection section and the circuit board. When the support section is subjected to an upward pressure, the circuit board can better transmit the support force downward through the positioning step.

[0011] As a further improvement of the above technical solution, the housing includes a box body and a bottom cover, a cavity with an opening downward is formed inside the box body, the circuit board is located inside the cavity, the bottom cover is connected to the bottom side of the box body, the jack is formed on the top side of the box body, and the through hole is formed on the bottom cover. During assembly, the circuit board can be first connected to the bottom cover, so that the external connection section passes through the through hole on the bottom cover. At this time, the support section abuts against the top side of the bottom cover, and then the circuit board and the bottom cover are loaded into the cavity of the box body upward together, and the bottom cover is connected to the bottom side of the box body to complete the overall assembly.

[0012] As a further improvement of the above technical solution, vertical ribs are provided on the inner side wall of the cavity. A plurality of the vertical ribs are arranged around the center of the cavity, and the top side of the circuit board abuts against the bottom ends of the plurality of vertical ribs. A plurality of vertical ribs on the inner side of the cavity can form a supporting surface for supporting and positioning the circuit board. When the circuit board is inserted into the cavity, the top side of the circuit board can be abutted against this supporting surface, thereby positioning the circuit board in the cavity.

[0013] As a further improvement of the above technical solution, a protection door is connected to the top side of the circuit board. The power connection piece is located inside the protection door, and the top side of the protection door abuts against the inner top side of the cavity. The protection door can cover and protect the power connection piece, so that the power connection piece is not directly exposed outward through the jack when not in use. When in need of use, when the plug of the external device passes through the through hole and applies force to the protection door, the protection door will be opened, thus coming into contact and conducting with the power connection piece, improving the overall safety of use. Since the top side of the protection door abuts against the inner top side of the cavity, it can further provide support and positioning for the circuit board. When the circuit board is upwardly forced by the power connection pin, the structure of the circuit board is also more stable.

[0014] As a further improvement of the above technical solution, a key is provided on the outer side of the housing. A push switch is connected to the circuit board, and the trigger end of the push switch abuts against the key. When the adapter is needed to be used, the key can be applied with force to act on the push switch, thereby turning on the adapter. When it is not needed to be used, the key is also applied with force to act on the push switch to turn off the adapter, so as to improve the safety of use.

[0015] As a further improvement of the above technical solution, a lamp body is connected to the circuit board. An light outlet hole is provided on the top side of the housing. A light guide column is connected inside the housing. The top end of the light guide column extends upward to the light outlet hole, and the bottom end of the light guide column extends downward above the lamp body. During operation, the lamp body emits light outward through the light guide column, which can display the working state of the adapter. Using the light guide column to emit light outward can not only ensure the light-emitting effect from the inside to the outside of the housing, but also avoid the impact damage of the lamp body by external objects during use, further improving the overall practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for use in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0017] Figure 1 is the overall exploded schematic diagram of the present invention.

[0018] Figure 2 It is the overall side view of the present utility model.

[0019] Figure 3 is Figure 2 the schematic structural diagram of the A-A cross-section of

[0020] In the attached drawings: 100 - housing, 110 - jack, 120 - support rib, 121 - chamfer, 130 - positioning rib, 140 - box body, 150 - bottom cover, 160 - vertical rib, 170 - key, 200 - circuit board, 210 - power connection piece, 220 - power connection pin, 221 - support section, 222 - external connection section, 223 - connection section, 224 - connection protrusion, 230 - protection door, 240 - push switch, 250 - lamp body, 260 - light guide column. Specific embodiments

[0021] The following describes in detail the embodiments of the present utility model. The examples of the embodiments are shown in the attached drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the attached drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Refer to Figure 1 、 Figure 2 and Figure 3A conversion plug includes a shell 100 and a circuit board 200, wherein a jack 110 is provided on the top side of the shell 100, and a through hole is provided on the bottom side of the shell 100; the circuit board 200 is located in the shell 100, a power connection sheet 210 is connected to the top side of the circuit board 200, and a power connection pin 220 is connected to the bottom side of the circuit board 200, and a support section 221 and an external connection section 222 are formed on the power connection pin 220, the support section 221 extends in the horizontal direction, and the external connection section 222 extends downward, and ... 21 is against the inner bottom side of the shell 100, the external connection section 222 passes through the through hole downward, and the number of the power pins 220 is at least two. For example, two sockets 110 are arranged at intervals on the top side of the shell 100, and two through holes are arranged at intervals on the bottom side of the shell 100. Correspondingly, power connection sheets 210 are respectively connected to the positions of the two sockets 110 on the circuit board 200. At this time, there are two power pins 220, and the external connection sections 222 on the two power pins 220 respectively pass through two through holes downward.

[0026] As can be seen from the above, a connecting pin 220 plugged into the external socket hole is connected to the bottom side of the circuit board 200, and a supporting section 221 and an external connecting section 222 are formed on the connecting pin 220. The supporting section 221 abuts against the inner bottom side of the housing 100, and a supporting position can be formed between the circuit board 200 and the inner bottom side of the housing 100. When the inner bottom side of the housing 100 is subjected to external force, the support provided by the connecting pin 220 at the supporting section 221 can make the inner bottom side of the housing 100 not easily deformed. According to the type of socket hole to be transferred, the connecting pin 220 There are at least two supporting points for the inner bottom side of the shell 100 formed in the shell 100. When in use, the plug of the external device can be inserted into the jack 110 on the top side of the shell 100, and the conversion plug is inserted into the socket hole of the external device through the external connection section 222 on the power connection pin 220. Therefore, the power connection pin 220 can not only connect the power supply of the external device, but also support the shell 100, so that the shell 100 is not easily deformed or damaged when subjected to external force, thereby effectively improving the structural strength of the shell 100 and making it more practical.

[0027] The support section 221 can directly abut against the inner bottom side of the housing 100, and in order to facilitate the external section 222 to pass through the through hole during the overall assembly, in this embodiment, the inner bottom side of the housing 100 is formed with an upwardly protruding support rib 120 on one side of the through hole, and the support rib 120 abuts against the bottom side of the support section 221. The support rib 120 is provided with a chamfer 121 at the top corner of one side close to the through hole, and the chamfer 121 can be a rounded corner or a chamfered corner. When the external section 222 of the connecting pin 220 needs to be passed through the through hole, the chamfer 121 structure provided on the support rib 120 can guide the external section 222, so that the external section 222 can more easily pass through the housing 100 downward from the through hole, and the support rib 120 is used to abut against the support section 221, thereby achieving further support and positioning of the inner bottom side of the housing 100.

[0028] When the contact area between the external section 222 and the shell 100 at the inner side of the through hole is small, the through hole has a limited limit on the external section 222, and the external section 222 is easy to shake at the through hole position, especially when the inner bottom wall thickness of the shell 100 is small, the stability of the portion of the external section 222 extending out of the shell 100 is poor. In order to improve the structural stability, in this embodiment, an upwardly protruding positioning rib 130 is formed on the side of the through hole on the inner bottom side of the shell 100, and the positioning rib 130 extends around the through hole and is connected to both ends of the support rib 120. In actual applications, a protruding support rib 120 is formed on one side of the through hole on the inner bottom side of the shell 100, and protruding positioning ribs 130 are formed on three sides of the protruding support rib 120. The positioning ribs 130 can further strengthen the structural strength of the inner bottom side of the outer shell 100, so that the inner bottom side of the outer shell 100 is not easy to crack and deform, and the positioning ribs 130 extending around the through hole can be surrounded to form a space for limiting the external section 222, thereby increasing the contact area with the external section 222 and making the external section 222 less likely to shake.

[0029] As a specific structural embodiment of the electrical connection pin 220, the electrical connection pin 220 includes a connecting section 223, the connecting section 223 is connected to one end of the supporting section 221 and extends upward, the top end of the connecting section 223 is connected to the circuit board 200, and the external connecting section 222 is connected to the other end of the supporting section 221. The connecting section 223, the supporting section 221 and the external connecting section 222 are connected in sequence, and are bent at the connection to change the extension direction, and are relatively fixed to the circuit board 200 through the connecting section 223, and the two are electrically connected to each other.

[0030] When there are two power connection pins 220 , the two power connection pins 220 are symmetrically arranged, so that the supporting force provided to the inner bottom side of the housing 100 is more uniform.

[0031] The connecting section 223 can be directly connected to the bottom side of the circuit board 200. In order to facilitate the relative positioning of the circuit board 200 and the power connection pin 220, in this embodiment, a positioning step is provided at the top end of the connecting section 223. A part of the connecting section 223 beside the positioning step forms a connecting protrusion 224. The connecting protrusion 224 passes upward through the circuit board 200, and the bottom side of the circuit board 200 abuts against the positioning step. When connecting the connecting section 223 to the circuit board 200, the connecting protrusion 224 is mainly used to pass upward through the circuit board 200 to achieve quick positioning of the two, and the positioning step is used to limit the upward insertion stroke of the connecting section 223 into the circuit board 200, improving the connection stability between the connecting section 223 and the circuit board 200. When the supporting section 221 receives an upward pressure, the circuit board 200 can better transmit the supporting force downward through the positioning step. In practical applications, the part of the connecting protrusion 224 that passes upward through the circuit board 200 is welded to the circuit board 200 to make the connection between the two more stable.

[0032] In some embodiments, the housing 100 includes a box body 140 and a bottom cover 150. An opening-down cavity is formed inside the box body 140. The circuit board 200 is located inside the cavity. The bottom cover 150 is connected to the bottom side of the box body 140. The jack 110 is formed on the top side of the box body 140, and the through hole is formed on the bottom cover 150. During assembly, the circuit board 200 can be first connected to the bottom cover 150, so that the external connection section 222 passes through the through hole on the bottom cover 150. At this time, the supporting section 221 abuts against the top side of the bottom cover 150. Then, the circuit board 200 and the bottom cover 150 are together loaded upward into the cavity of the box body 140, and the bottom cover 150 is connected to the bottom side of the box body 140 to complete the overall assembly. In order to improve the connection sealing performance between the box body 140 and the bottom cover 150, the bottom cover 150 and the box body 140 can be ultrasonically welded.

[0033] In the above embodiment, for the positioning of the circuit board 200 inside the cavity, the circuit board 200 can be directly locked and fixed inside the cavity by connecting parts such as screws or bolts. In order to improve the convenience of installing the circuit board 200, in this embodiment, vertical ribs 160 are provided on the inner side wall of the cavity. A plurality of vertical ribs 160 are arranged around the center of the cavity. The top side of the circuit board 200 abuts against the bottom ends of the plurality of vertical ribs 160. The number of vertical ribs 160 can be three. At this time, the three vertical ribs 160 are arranged in a triangular shape on the inner side of the cavity, or four. At this time, the four vertical ribs 160 are arranged in a rectangular shape on the inner side of the cavity. The plurality of vertical ribs 160 on the inner side of the cavity can form a supporting surface for supporting and positioning the circuit board 200. When loading the circuit board 200 into the cavity, the top side of the circuit board 200 can be abutted against this supporting surface, thereby positioning the circuit board 200 inside the cavity.

[0034] In practical applications, positioning posts extending upward are connected to the bottom cover 150. A plurality of positioning posts, such as three, are spaced and connected to the bottom cover 150. The three positioning posts are arranged in a triangular pattern. The plurality of positioning posts abut against the bottom side of the circuit board 200, which can support and position the circuit board 200, press the circuit board 200 against the bottom ends of the plurality of vertical ribs 160, and improve the structural stability of the circuit board 200.

[0035] The power connection piece 210 can be directly opposite to the exposed jack 110. In order to prevent accidental contact with the energized power connection piece 210, in this embodiment, a protection door 230 is connected to the top side of the circuit board 200. The power connection piece 210 is located within the protection door 230, and the top side of the protection door 230 abuts against the inner top side of the cavity. The protection door 230 can cover and protect the power connection piece 210, so that the power connection piece 210 is not directly exposed outward through the jack 110 when not in use. When in need of use, when the plug of an external device passes through the through hole and applies force to the protection door 230, the protection door 230 will be opened, thus coming into contact and conduction with the power connection piece 210, improving the overall safety of use. Since the top side of the protection door 230 abuts against the inner top side of the cavity, it can further provide support and positioning for the circuit board 200. When the circuit board 200 is upwardly forced by the power connection pins 220, the structure of the circuit board 200 is also more stable.

[0036] In addition, a positioning rib 130 extending upward is also connected to the middle of the bottom cover 150. The top end of the positioning rib 130 abuts against the bottom side of the circuit board 200. There are also two upwardly protruding positioning posts on both sides of the positioning rib 130. The two positioning posts respectively pass through the circuit board 200. When installing the protection door 230, the protection door 230 can be connected in cooperation with the positioning posts, so as to improve the installation efficiency of the circuit board 200 and further strengthen the support for the circuit board 200.

[0037] The protection door 230 includes a protective shell, a stopper and a spring. The protective shell is connected to the top side of the circuit board 200. The stopper is located within the protective shell. Two inclined shielding surfaces are respectively formed at the positions of the stopper facing the two jacks 110. Both shielding surfaces are inclined downward and to the left from top to bottom. The two ends of the spring respectively abut against the stopper and the protective shell. Through the elastic force of the spring, the stopper can be horizontally pushed towards one inner side of the protective shell. When the socket of an external device is inserted into the two jacks 110 and abuts against the inclined shielding surfaces, the stopper can be pushed towards the other inner side of the protective shell, so that the two jacks 110 and the two shielding surfaces are staggered from each other, and the socket can smoothly contact the power connection piece 210.

[0038] In some embodiments, a button 170 is provided on the outer side of the housing 100, a push switch 240 is connected to the circuit board 200, and the trigger end of the push switch 240 abuts against the button 170. When the adapter is needed, force can be applied to the button 170 to act on the push switch 240, thereby turning on the adapter. When it is not needed, force is also applied to the button 170 to act on the push switch 240 to turn off the adapter, thus improving the safety of use.

[0039] The button 170 can be made of a softer material. In this case, directly applying force to the button 170 can touch the trigger end of the push switch 240. Or it can be made of a harder material. In this case, the button 170 needs to be elastically connected to the inside of the housing 100. Specifically, a plurality of positioning grooves, such as three, are provided on the inner side wall of the housing 100, that is, the inner side wall of the cavity. The three positioning grooves are arranged in a triangle. Three elastic pieces are connected to the outer periphery of the button 170, and the three elastic pieces are respectively inserted into the three positioning grooves, thereby positioning the button 170 on the inner side wall of the housing 100. When an external force is applied to the button 170, the three elastic pieces undergo elastic deformation, so that the button 170 can act on the trigger end of the push switch 240 inward. To further improve the structural stability of the elastic pieces, the three elastic pieces can extend in a serpentine shape, making it difficult for the three elastic pieces to deform and improving the service life.

[0040] In some embodiments, a lamp body 250 is connected to the circuit board 200. A light-emitting hole is provided on the top side of the housing 100. A light guide column 260 is connected inside the housing 100. The top end of the light guide column 260 extends upward to the light-emitting hole, and the bottom end of the light guide column 260 extends downward above the lamp body 250. During operation, the lamp body 250 emits light outward through the light guide column 260, which can display the working state of the adapter. Using the light guide column 260 to emit light outward can not only ensure the light-emitting effect from the inside to the outside of the housing 100, but also avoid the impact damage of external objects on the lamp body 250 during use, further improving the overall practicality.

[0041] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A conversion plug, characterized in that: include: A housing (100) having a plug hole (110) on the top side and a through hole on the bottom side; A circuit board (200) is located in the housing (100); the top side of the circuit board (200) is connected to a power connection sheet (210); the bottom side of the circuit board (200) is connected to a power connection pin (220); the power connection pin (220) is formed with a support section (221) extending in a horizontal direction and an external connection section (222) extending downward; the support section (221) abuts against the inner bottom side of the housing (100); the external connection section (222) passes through the through hole downward; and the number of the power connection pins (220) is at least two.

2. A conversion plug according to claim 1, characterized in that: An upwardly protruding support rib (120) is formed on the inner bottom side of the housing (100) at one side of the through hole, the support rib (120) abuts against the bottom side of the support section (221), and a chamfer (121) is provided at a top corner of one side of the support rib (120) close to the through hole.

3. A conversion plug according to claim 2, characterized in that: An upwardly protruding positioning rib (130) is formed on the inner bottom side of the housing (100) at the side edge of the through hole, and the positioning rib (130) extends around the through hole and is connected to both ends of the supporting rib (120).

4. A conversion plug according to claim 2, characterized in that: The electrical connection pin (220) comprises a connecting section (223), wherein the connecting section (223) is connected to one end of the supporting section (221) and extends upwards, the top end of the connecting section (223) is connected to the circuit board (200), and the external connection section (222) is connected to the other end of the supporting section (221).

5. A conversion plug according to claim 4, characterized in that: A positioning step is provided at the top of the connecting section (223); a portion of the connecting section (223) located beside the positioning step forms a connecting protrusion (224); the connecting protrusion (224) passes through the circuit board (200) upwards; and the bottom side of the circuit board (200) abuts against the positioning step.

6. A conversion plug according to claim 1, characterized in that: The housing (100) comprises a box body (140) and a bottom cover (150); a cavity opening downward is formed in the box body (140); the circuit board (200) is located in the cavity; the bottom cover (150) is connected to the bottom side of the box body (140); the jack (110) is formed on the top side of the box body (140); and the through hole is formed on the bottom cover (150).

7. A conversion plug according to claim 6, characterized in that: The inner wall of the cavity is provided with a vertical rib (160), and a plurality of the vertical ribs (160) are arranged around the center of the cavity, and the top side of the circuit board (200) abuts against the bottom ends of the plurality of the vertical ribs (160).

8. A conversion plug according to claim 6, characterized in that: The top side of the circuit board (200) is connected to a protective door (230), the power connection sheet (210) is located inside the protective door (230), and the top side of the protective door (230) abuts against the inner top side of the cavity.

9. A conversion plug according to claim 1, characterized in that: A button (170) is arranged on the outer side of the housing (100), a push switch (240) is connected to the circuit board (200), and a trigger end of the push switch (240) abuts against the button (170).

10. A conversion plug according to claim 1, characterized in that: The circuit board (200) is connected to a lamp body (250), a light exit hole is provided on the top side of the housing (100), a light guide column (260) is connected inside the housing (100), the top end of the light guide column (260) extends upward to the light exit hole, and the bottom end of the light guide column (260) extends downward to above the lamp body (250).

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