WO2007126173A1

WO2007126173A1 - Recessed ceiling light

Info

Publication number: WO2007126173A1
Application number: PCT/KR2006/002118
Authority: WO
Inventors: Myung Gyu Jeon
Original assignee: Myung-An Electric Co., Ltd
Priority date: 2006-05-01
Filing date: 2006-06-02
Publication date: 2007-11-08
Also published as: KR100684656B1

Abstract

Disclosed herein is a recessed ceiling light. The light includes an upper protective cap having a locking step. A lower protective cap has a locking hook to engage with the locking step and a circuit-board locking support. A circuit board is supported by the circuit-board support and has a rectangular circuit-board support hole and a connection terminal. A socket includes a lamp locking hole, a lamp coupling part, and a circuit-board coupling part. The lamp locking hole has a locking recess, with guide recesses formed in opposite sides of the locking recess. The lamp coupling part is provided in each of the guide recesses of the lamp locking hole. The circuit-board coupling part integrally has four circuit-board supports, second U-shaped elastic grooves, and a circuit-board locking hook. A lamp is coupled to the socket and includes a coupling protrusion and a bulb.

Description

RECESSED CEILING LIGHT

Technical Field

[1] The present invention relates, in general, to a recessed ceiling light and, more particularly, to a recessed ceiling light, which is constructed so that a circuit board having a connection terminal is coupled to a socket integrated with a coupling means, thus affording easy attachment and detachment of a lamp, and enabling easy electric connection, and which simplifies the construction of the lamp, thus reducing a manufacturing cost, therefore reducing the expense of replacement of the lamp. Background Art

[2] Generally, a recessed ceiling light is buried in a ceiling and includes a light casing.

A socket having a fastening hole and a circuit board is provided on the upper portion of a reflective shade, which is assembled with the light casing. In order to use the light, a lamp is fastened to the fastening hole which is formed in the socket.

[3] FlG. 1 is an exploded perspective view showing a conventional recessed ceiling light, and FlG. 2 is a view showing the conventional recessed ceiling light when it is assembled. The conventional recessed ceiling light will be described with reference to the drawings.

[4] A conventional recessed ceiling light 200, which has been generally used, includes a light casing 110, a casing cover 120, a reflective shade 130, a socket 140, and a lamp 150. First locking holes 131 and an insert hole 132 are formed in the upper portion of the reflective shade 130. The socket 140 has a fastening hole 143 under a flange 142 having second locking holes 141, and has a circuit board (not shown) above the flange. The lamp 150 includes a lamp base 152 and a housing 154. The lamp base 152 is provided on the upper portion of the lamp 150, and has a spiral fastening means 151, with a lamp circuit board (not shown) provided in the lamp base 152. The housing 154 having a bulb 153 is provided at the lower portion of the lamp 150.

[5] The conventional recessed ceiling light 200 constructed as described above is assembled as follows. That is, the socket 140 is locked to the reflective shade 130 by inserting locking means 144 into the first locking holes 131 formed in the reflective shade 130 and the second locking holes 141 formed in the flange 142 of the socket 140. Next, the bottom of the lamp casing 110 is covered with the casing cover 120, and simultaneously, the reflective shade 130 connected to the socket 140 is inserted into the lamp casing 110 so as to be secured to the lamp casing 110. Subsequently, the fastening means 151 provided on the upper portion of the lamp 150 is fastened to the fastening hole 143 provided on the lower portion of the socket 140. Thereby, the electric connection and the physical coupling of the components are achieved.

[6] However, the conventional recessed ceiling light 200 constructed as described above is problematic in that it has the circuit board provided on the socket 140, and in addition, has, on the upper portion of the lamp 150, the lamp base 152 having the lamp circuit board, so that the arrangement of the light becomes complex because of the lamp circuit board and the electric connection means for the lamp circuit board, thereby it is difficult to manufacture the light, and the manufacturing cost of the light is increased.

[7] Therefore, demand has increased for a recessed ceiling light, which overcomes the above-mentioned problems and affords easier attachment and detachment of the socket and the lamp, in addition to enabling easier electric connection between the socket and the lamp.

Disclosure of Invention Technical Problem

[8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a recessed ceiling light, in which a lamp locking hole, a lamp coupling part, and a circuit-board coupling part are integrally provided on a socket, thus allowing a lamp and a circuit board to be easily coupled to each other, and affording easy manufacture, therefore reducing the cost of manufacturing the light, and in which a connection terminal for electric connection is provided on the circuit board, thus enabling easy electric connection without providing an additional electric connecting unit to the lamp, and in which protective caps are provided on the upper and lower portions of the socket connected with the circuit board, thus safely protecting the circuit board, and in which the lamp has a simple construction, thus reducing the cost incurred upon replacement.

Technical Solution

[9] In order to accomplish the object, the present invention provides a recessed ceiling light having a socket mounted to a light casing, a casing cover, a reflective shade, and a lamp coupled to the socket, the light including an upper protective cap provided on an upper portion of the light casing, with a wire hole and a cap locking hole being formed in an upper surface of the protective cap, and a locking step being provided in the protective cap; a lower protective cap having on an upper portion thereof a locking hook which engages with the locking step of the upper protective cap, with a through hole being formed in a lower surface of the lower protective cap, and a circuit-board locking support being provided in the lower protective cap; a circuit board supported by the circuit-board support of the lower protective cap, and having a rectangular circuit-board support hole and a connection terminal; a socket including a lamp locking hole having a locking recess, with guide recesses being formed in opposite sides of the locking recess, a lamp coupling part provided in each of the guide recesses of the lamp locking hole and integrally having a first U-shaped elastic groove and a lamp locking projection, and a circuit-board coupling part integrally having four circuit-board supports provided outside the lamp locking hole, second U-shaped elastic grooves formed on two sides, on which the lamp locking projection of the lamp coupling part is not provided, and a circuit-board locking hook; and a lamp coupled to the socket, and including a coupling protrusion which is provided on an upper portion of the lamp and has a locking hook and a terminal contact pin, and a bulb which is provided on a lower portion of the lamp.

Brief Description of the Drawings

[10] FlG. 1 is an exploded perspective view showing a conventional recessed ceiling light;

[11] FlG. 2 is a view showing the conventional recessed ceiling light when it is assembled;

[12] FlG. 3 is an exploded perspective view showing a recessed ceiling light according to the present invention;

[13] FlG. 4 is a perspective view showing a socket, according to the present invention;

[14] FlG. 5 is a view showing the recessed ceiling light, according to the present invention, when it is assembled;

[15] FlG. 6 is a view showing the state where a circuit board is coupled to the socket, according to the present invention;

[16] FlG. 7 is a view showing the state where a lamp is coupled to the socket, according to the present invention; and

[17] FlG. 8 is a view showing the state where a terminal contact pin is connected to a connection terminal, according to the present invention. Mode for the Invention

[18] The construction of a recessed ceiling light, according to the present invention, which overcomes the problems of the prior art, will be described below.

[19] FlG. 3 is an exploded perspective view showing a recessed ceiling light according to the present invention, FlG. 4 is a perspective view showing a socket, according to the present invention, FlG. 5 is a view showing the recessed ceiling light, according to the present invention, when it is assembled, FlG. 6 is a view showing the state where a circuit board is coupled to the socket, according to the present invention, FlG. 7 is a view showing the state where a lamp is coupled to the socket, according to the present invention, and FlG. 8 is a view showing the state where a terminal contact pin is connected to a connection terminal, according to the present invention.

[20] As shown in FlG. 3, a recessed ceiling light 100 includes a light casing 4, a casing cover 6, a reflective shade 8, an upper protective cap 10, a lower protective cap 20, a circuit board 30, a socket 60, and a lamp 70, which are assembled with each other.

[21] Referring to FlG. 3, two bolt holes 1 are formed in the upper surface of the light casing 4, and clips 2 are provided on the lower portion of the light casing 4 to attach the reflective shade 8 to the light casing 4. Further, mounting grooves 3 are formed in the side surface of the light casing 4, and mounting means (not shown) are inserted into the mounting grooves 3, so that the light can be mounted to a ceiling (not shown).

[22] Further, as shown in FlG. 3 or FlG. 5, the casing cover 6 is coupled to the lower end of the light casing 4, with a step 5 formed on the lower surface of the casing cover 6.

[23] Further, as shown in FlG. 3 or FlG. 5, the reflective shade 8 has a ring 7 which is inserted into the step 5 of the casing cover 6. The reflective shade 8 is attached to the light casing 4 by the clips 2 of the light casing 4.

[24] As shown in FlG. 3 or FlG. 5, the upper protective cap 10 is provided on the upper portion of the light casing 4. A wire hole 11 and cap locking holes 12 corresponding to the bolt holes 1 of the light casing 4 are formed in the upper surface of the upper protective cap 10. A locking step 13 is provided on the inner surface of the upper protective cap 10.

[25] Further, the lower protective cap 20 has on the upper portion thereof a locking hook

21 which is locked to the locking step 13 of the upper protective cap 10. A through hole 22 is formed in the lower surface of the lower protective cap 20, and a circuit- board locking support 23 is provided in the lower protective cap 20.

[26] As shown in FlG. 3 or FIGS. 5 and 6, the circuit board 30 is supported by the circuit-board locking support 23 of the lower protective cap 20. A rectangular circuit- board support hole 31 is formed in the central portion of the circuit board 30. Connection terminal holes 32 are formed in opposite sides of the circuit-board support hole 31, and connection terminals 33 are soldered to the connection terminal holes 32. An electric wire 34 is connected to the surface of the circuit board 30 so as to supply electricity to the circuit board.

[27] In this case, components, including a stabilizer (not shown), are provided on the circuit board 30 so as to be electrically connected thereto.

[28] Further, as shown in FIGS. 3 to 5 or FlG. 7, the socket 60 includes a lamp locking hole 40, a lamp coupling part 50, and a circuit-board coupling part 64. A locking recess 41 is formed in the lamp locking hole 40, and guide recesses 42 are formed in opposite sides of the locking recess 41. The lamp coupling part 50 is provided in each of the guide recesses 42 of the lamp locking hole 40, and includes a first U-shaped elastic groove 51 to allow easy attachment or detachment of the lamp 70 using elasticity. A lamp locking projection 52 protrudes from a portion around the first elastic groove 51. Meanwhile, the circuit-board coupling part 64 is provided outside the lamp locking hole 40, and integrally has four circuit-board supports 61, second elastic grooves 62, and circuit-board locking hooks 63. The circuit board 30 is seated on the circuit-board supports 61. Further, the second U-shaped elastic grooves 62 are formed on sides of the socket 60 on which the lamp locking projections 52 of the lamp coupling parts 50 are not provided, thus allowing the circuit board 30 to be easily attached to or detached from the socket 60 using elasticity. The circuit-board locking hook 63 protrudes from each second elastic groove 62.

[29] Further, terminal holes 65 are formed in the socket 60 to correspond to the connection terminals 33 provided on the circuit board 30. In order to guide and support the lamp 70 to be coupled to the socket 60, a groove 67 having support protrusion seats 66 is provided.

[30] As shown in FIGS. 3 or 5, the lamp 70 has on the upper portion thereof a coupling protrusion 72 which is coupled to the socket 60 and has locking hooks 71, terminal contact pins 73 inserted into the corresponding terminal holes 65, and a support step 75 which has support protrusions 74 and is inserted into the groove 67 of the support protrusion seats 66. Further, a bulb 76 is provided on the lower portion of the lamp 70.

[31] The operation and effect of the light, constructed as described above, will be described below with reference to the drawings.

[32] First, as shown in FIGS. 3 to 5, the bolt holes 1 formed in the upper surface of the light casing 4 and the cap locking holes 12 formed in the upper surface of the upper protective cap 10 are aligned with each other and coupled to each other using locking means 14. Thereby, the upper protective cap 10 is locked to the light casing 4.

[33] In this case, the locking means 14 may use general bolts.

[34] As such, after the upper protective cap 10 is locked to the light casing 4, as shown in FIGS. 3 to 6, the circuit board 30 is coupled to the socket 60 using the circuit-board coupling part 64 of the socket 60 and the circuit-board support hole 31 formed in the circuit board 30.

[35] In this case, the circuit-board coupling part 64 has the second U-shaped elastic grooves 62. Thus, when the circuit board 30 is supported by the circuit-board locking hooks 63, an elastic force acts. Thereby, the circuit board 30 is easily coupled to the circuit-board coupling part 64. Further, since the circuit-board coupling part 64 has the four circuit-board supports 61, the circuit board 30 is safely supported by the circuit- board coupling part 64 without being undesirably moved.

[36] As such, after the circuit board 30 has been coupled to the socket 60, as shown in

FIG. 3 or FIG. 5, the circuit board 30 coupled to the socket 60 is supported by the circuit-board locking support 23 provided in the lower protective cap 20. The circuit board 30, coupled to the socket 60, and the lower protective cap 20 are mounted to the light casing 4 through the engagement of the locking hook 21 of the lower protective cap 20 and the locking step 13 of the upper protective cap 10. Next, the electric wire 34 connected to the circuit board 30 is connected to a power supply unit (not shown) so as to supply power.

[37] In this way, the upper protective cap 10 and the lower protective cap 20 are provided on the upper and lower portions of the circuit board 30 mounted to the light casing 4, so that the circuit board 30 is safely protected from the exterior.

[38] Further, after such a coupling operation has been completed, the light casing 4 is inserted into the ceiling. In such a state, the light casing 4 is mounted to the ceiling using the mounting grooves of the light casing 4 and the mounting means.

[39] Thereafter, as shown in FIG. 3 or FIG. 5, the reflective shade 8 is inserted into the casing cover 6 such that the step 5 of the casing cover 6 contacts the ring 7 of the reflective shade 8. When the reflective shade 8 is inserted into the light casing 4, the reflective shade 8 is firmly supported via the clips 2 provided on the lower portion of the light casing 4. Thereby, the reflective shade 8 and the casing cover 6 are secured to the light casing 4.

[40] As such, after the reflective shade 8 is secured to the light casing 4, the lamp 50 is coupled to the socket 40. In this way, the assembly of the recessed ceiling light 100 is completed.

[41] As shown in FIGS. 3 to 7, the lamp 70 is coupled to the socket 60 by inserting the coupling protrusion 72, which is provided on the lamp 70 and has the locking hooks 71, into the lamp locking hole 40 and the lamp coupling part 50 of the socket 60. Since the first U-shaped elastic grooves 51 are formed on the lamp coupling part 50 of the socket 60, an elastic force acts when the locking hooks 71 provided on the coupling protrusion 72 of the lamp 70 are inserted into the lamp locking projections 52. Thereby, the coupling of the socket 60 to the lamp 70 is easily achieved. Further, the support step 75 having the support protrusions 74 of the lamp 70 is inserted into the groove 67 having the support protrusion seats 66 of the socket 60, thus securing more stable coupling.

[42] Moreover, as shown in FIG. 3 or FIG. 8, while the coupling is achieved, the terminal contact pins 73 provided on the lamp 70 are inserted into the terminal holes 65 of the socket 60. Thereby, the connection terminals 33 of the circuit board 30 coupled to the circuit-board coupling part 64 are connected to the terminal contact pins 73 of the lamp 70, thus achieving electric connection without additional electric connecting means.

[43] When the lamp 70 of the recessed ceiling light 100 assembled in this way is exhausted and is thus replaced with a new one, the circuit board 30 coupled to the socket 60 is supported by the lower protective cap 20, thus affording easy attachment or detachment of the lamp 70. Further, the construction of the light is simple, thus simplifying the manufacturing process and reducing the manufacturing cost, therefore reducing the expense of replacement of the lamp 70, which is frequent. [44] As described above, the recessed ceiling light 100 according to the present invention affords stable electric connection using the terminal contact pins 73 and the connection terminals 33 without an additional electric connection means, and safely protects the circuit board 30 due to the upper protective cap 10 and the lower protective cap 20. Further, the present invention uses the integrated socket 60 having a simple construction, thus being capable of coupling the lamp 70 and the circuit board 30 without using additional mounting means. The present invention affords easy manu facture, thus reducing the manufacturing cost.

Industrial Applicability

[45] The present invention provides a recessed ceiling light, in which a lamp locking hole, a lamp coupling part, and a circuit-board coupling part are integrally provided on a socket, thus allowing a lamp and a circuit board to be easily coupled to each other, and affording easy manufacture, therefore reducing the cost of manufacturing the light, and in which a connection terminal for electric connection is provided on the circuit board, thus enabling easy electric connection without providing an additional electric connecting unit to the lamp, and in which protective caps are provided on the upper and lower portions of the socket connected with the circuit board, thus safely protecting the circuit board, and in which the lamp has a simple construction, thus reducing the cost incurred upon replacement.

[46]

Claims

[1] A recessed ceiling light having a socket mounted to a light casing, a casing cover, a reflective shade, and a lamp coupled to the socket, the light comprising: an upper protective cap provided on an upper portion of the light casing, with a wire hole and a cap locking hole being formed in an upper surface of the protective cap, and a locking step being provided in the protective cap; a lower protective cap having on an upper portion thereof a locking hook which engages with the locking step of the upper protective cap, with a through hole being formed in a lower surface of the lower protective cap, and a circuit-board locking support being provided in the lower protective cap; a circuit board supported by the circuit-board support of the lower protective cap, and having a rectangular circuit-board support hole and a connection terminal; a socket, comprising: a lamp locking hole having a locking recess, with guide recesses being formed in opposite sides of the locking recess; a lamp coupling part provided in each of the guide recesses of the lamp locking hole, and integrally having a first U-shaped elastic groove and a lamp locking projection; and a circuit-board coupling part integrally having: four circuit-board supports provided outside the lamp locking hole; second U-shaped elastic grooves formed on two sides, on which the lamp locking projection of the lamp coupling part is not provided; and a circuit-board locking hook; and a lamp coupled to the socket, comprising: a coupling protrusion provided on an upper portion of the lamp, and having a locking hook and a terminal contact pin; and a bulb provided on a lower portion of the lamp.