LIGHTING DEVICE WITH A LINEAR LIGHT SOURCE

Abstract

A luminaire with a linear light source, comprising: a light source (10) extending in a longitudinal direction and having connection elements (11) at both ends of the light source (10) for connection to a power supply; a spacer (20) having an inner space (21) open in a front-to-back direction and accommodating the light source (10), with mounting elements (22) formed at both ends of the inner space (21) so that the connection elements (11) are placed thereon; and a reflective holder (30) attached to a rear end of the spacer (20) to cover the inner space (21), and having fastening elements (31) that are compatible with the mounting elements (22) for securing the connection elements (11) when the reflective holder (30) is attached to the spacer (20), with an inner surface of the reflective holder (30) configured to reflect light.that is emitted by the light source (10).

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a lighting device with a linear light source (e.g. a linear light source). DESCRIPTION OF THE RELATED TECHNOLOGY

[0002] Generally, a vehicle (e.g., a motor vehicle) is provided with a lighting device to make it easy to see objects in a traveling direction when driving at night and to inform other vehicles (e.g., motor vehicles) or other road users of the driving status of a host vehicle (e.g., a motor vehicle). A lamp, called a headlight, is a light that has the function of illuminating a vehicle's traveling path in front of the vehicle.

[0003] Such a light is divided into a headlight, a fog light, a turn signal, a brake light, and a reversing light, which are configured to emit light in different directions toward the road surface. Low beam is emitted by the headlight in a general driving situation, while high beam is emitted in a specific situation.

[0004] Meanwhile, an optical system used in a future vehicle (e.g., a future motor vehicle) tends to be reduced in overall size, but it is difficult to reduce the size of the optical system under conditions where both the low beam and the high beam can be generated. Therefore, even if a filament-type LED is used in a vehicle (e.g., a motor vehicle) to implement a linear light source, it may be difficult to mount the filament-type LED, and it is susceptible to vibration. Therefore, it may be challenging to ensure the precise light distribution pattern and light distribution amount of the filament-type LED using a conventional mounting method.

[0005] The foregoing is intended merely to aid in understanding the background of the present invention and is not intended to imply that the present invention falls within the scope of the prior art already known to those skilled in the art. EXPLANATION OF THE INVENTION

[0006] The present invention provides a lighting device with a linear light source (eg, a linear light source), in which the installation position of the light source is firmly fixed (eg, securely fastened), a heating performance (eg, a heat output) is ensured, and the amount of light from the light source is ensured.

[0007] To achieve the object of the present invention, the present invention provides a lighting device with a linear light source (e.g., a linear light source), comprising: a light source extending in a longitudinal direction and having at both ends thereof connecting elements (e.g., connecting parts) for being connected to an (electric) power supply; a spacer (e.g., a spacer) having an inner space opened in a front-rear direction and accommodating the light source therein (e.g., the light source is housed therein); mounting elements (e.g., mounting parts) formed at both ends of the inner space so that the connecting elements are set (e.g., supported) thereon; and a reflective bracket attached to a rear end of the spacer to cover the inner space and having fastening elements (e.g., fastening parts) matching the mounting elements (e.g.,mate with the fasteners) to secure the connecting elements when the reflective mount is attached to the spacer, with an inner surface of the reflective mount designed (e.g., manufactured) to reflect a light emitted by the light source.

[0008] The mounting member may be arranged in a rear part of the inner space and may have a receiving groove (e.g., a bearing groove) at a rear end thereof recessed in the same shape as each of the connecting elements of the light source so that the connecting element is seated therein (e.g., supported therein).

[0009] A support projection may be formed at the rear end of the mounting member to be spaced from the receiving groove and to project rearwardly.

[0010] The support projection may be formed at a position spaced from the receiving groove to extend along a periphery (e.g., a circumference) of the receiving groove.

[0011] The support projection may protrude to have a length equal to or longer than a protruding height of the connecting element in a state in which the connecting element is seated (e.g., supported) in the receiving groove.

[0012] The fastening element of the reflective bracket may be formed such that a front end thereof which comes into contact (e.g., a touching contact) with the mounting element forms a plane.

[0013] The reflective mount may be divided into a first reflective mount and a second reflective mount to be arranged on both sides of the spacer, respectively, wherein a first fastening element (e.g., a first fastening part) may be formed on the first reflective mount to match a first mounting element (e.g., a first mounting part) of the spacer (e.g., to match a first mounting element (e.g., mounting part) of the spacer) and to come into contact (e.g., a touch contact, e.g., an electrical contact) with a first terminal element (e.g., a first terminal part) of the light source, and a second fastening element (e.g., a second fastening part) may be formed on the second reflective mount to match a second mounting element (e.g., a second mounting part) of the spacer (e.g., to match a second mounting element (e.g.,mounting part) of the spacer) and to come into contact (e.g. a touch contact, e.g. an electrical contact) with a second connection element (e.g. a second connection part) of the light source.

[0014] Each of the first reflective mount and the second reflective mount may be made of a material that allows thermal conduction and electrical conduction.

[0015] The first reflective mount and the second reflective mount may be fixed to the spacer by means of a fixing member, and the fixing member may be made to allow electrical conduction, and an (electrical) current from an external device may be applied thereto.

[0016] A heat dissipation member may be formed at a rear end of each of the first reflective bracket and the second reflective bracket to dissipate heat generated by the light source to an outside (e.g., an exterior).

[0017] The lighting device may further include an installation member (e.g., an installation part) formed at (e.g., in) a center of the rear end of the spacer to divide (e.g., segment) the first reflective bracket and the second reflective bracket from each other, and a cover attached to the installation member behind the spacer by means of the first reflective bracket, the second reflective bracket, and the fixing member, whereby the first reflective bracket and the second reflective bracket are fixed to the spacer.

[0018] The lighting device may further comprise a housing formed to be open in a front-to-back direction, which accommodates the spacer and the reflective bracket therein and which has an outer lens (eg, an outer lens) at a front end thereof, wherein the cover may be attached to a rear end of the housing such that the spacer and the reflective bracket secured (eg, attached) to the cover are fixed to an interior of the housing.

[0019] As described above, a lighting device is configured with a linear light source (e.g., a linear light source) such that the position of a terminal element (e.g., a terminal part) of the light source is firmly fixed (e.g., securely fastened) by means of a spacer (e.g., a standoff) to stably (e.g., reliably) supply an (electric) current. In addition, light emitted from the light source is emitted forward by means of a reflective bracket installed in the spacer, and heat generated by the light source is dissipated to the outside by means of the reflective bracket, so that cooling performance is ensured. List of characters Fig. 1 is a diagram illustrating a lighting device having a linear light source (e.g., a linear light source) according to an embodiment of the present invention. Fig. 2 is a diagram showing the structure of the lighting device with the linear light source used in Fig. 1 is shown. Fig. 3 is a diagram illustrating an embodiment in which a wire (e.g., a power cable) is attached (e.g., connected) to the lighting device with the linear light source shown in Fig. 1 is shown. Fig. 4 is a diagram illustrating a mounting element (e.g., a mounting part) of the lighting device with the linear light source shown in Fig. 1 is shown. Fig. 5 is a diagram illustrating a spacer (e.g., a spacer) of the lighting device with the linear light source shown in Fig. 1 is shown. Fig. 6 is a cross-sectional view along the line AA` of Fig. 3. Fig. Fig. 7 is a diagram illustrating an embodiment in which a fixing member is used on the lighting device with the linear light source shown in Fig. 1 is shown. Fig. 8 is a cross-sectional view of the lighting device with the linear light source shown in Fig. 1 is shown. Fig. 9 is a cross-sectional view illustrating a lighting device including the linear light source according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] Hereinafter, a lighting device having a linear light source (e.g., a linear light source) according to some embodiments of the present invention will be described with reference to the accompanying drawings.

[0021] Fig. 1 is a diagram illustrating a lighting device with a linear light source (e.g., a linear light source) according to some embodiments of the present invention, Fig. 2 is a diagram showing the structure of the lighting device with the linear light source used in Fig. 1 is shown, Fig. 3 is a diagram illustrating an embodiment in which a wire (e.g., a power cable) is attached (e.g., connected) to the lighting device with the linear light source shown in Fig. 1 is shown, Fig. 4 is a diagram illustrating a mounting element (e.g., a mounting part) of the lighting device with the linear light source shown in Fig. 1 is shown, Fig. 5 is a diagram illustrating a spacer (e.g., a spacer) of the lighting device with the linear light source shown in Fig. 1 is shown, Fig. 6 is a cross-sectional view along the line AA' of Fig. 3, Fig. Fig. 7 is a diagram illustrating an embodiment in which a fixing member is used on the lighting device with the linear light source shown in Fig. 1 is shown, Fig. 8 is a cross-sectional view of the lighting device with the linear light source shown in Fig. 1 is shown, and Fig. 9 is a cross-sectional view illustrating a lighting device including the linear light source according to some embodiments of the present invention.

[0022] As in the Fig. 1 to Fig. 3, the lighting device with the linear light source according to some embodiments of the present invention includes: a light source 10 extending in a longitudinal direction and having terminal elements (e.g., terminal parts) 11 at both ends thereof for being connected to an (electrical) power supply; a spacer (e.g., a spacer) 20 having an inner space 21 opened in a front-rear direction and accommodating the light source 10 therein (e.g., the light source is housed therein); mounting elements (e.g., mounting parts) 22 formed at both ends of the inner space 21 so that the terminal elements 11 are set (e.g., supported) thereon; and a reflective bracket 30 attached to a rear end of the spacer 20 to cover the inner space 21 and having fastening elements (e.g., fastening parts) 31 that fit the mounting elements 22 (e.g.,with the fastening elements 22) to fasten the connecting elements 11 when the reflective holder 30 is attached to the spacer 20, with an inner surface of the reflective holder 30 being designed (e.g., manufactured) to reflect a light emitted from the light source 10.

[0023] Here, the light source 10 may include a light-emitting element (e.g., a light-emitting part) 10a formed of a filament-type LED for emitting light, and the terminal elements 11 provided at both ends of the light-emitting element 10a for being connected to the (electrical) power supply. Such a light source 10 is provided in the inner space 21 of the spacer 20, and the mounting elements 22 are formed at both ends of the inner space 21 of the spacer 20, so that each terminal element 11 of the light source 10 sits (e.g., supports) on the corresponding mounting element 22 to be fixed in position. The spacer 20 is formed of a non-conductor, so that it (the spacer 20) is not electrically connected to the terminal element 11.

[0024] Here, the reflective bracket 30 is attached to the rear end of the spacer 20. The reflective bracket 30 is attached to the rear end of the spacer 20 to cover the inner space 21, so that light emitted from the light source 10 is emitted to the front part of the spacer 20 (e.g., forward with respect to the spacer 20) through the front end of the spacer 20, which is opened. Moreover, the inner surface of the reflective bracket 30 is configured (e.g., fabricated) to reflect light emitted from the light source 10, thereby allowing light emitted from the light source 10 to be moved (e.g., guided) to the front end of the spacer 20 (e.g., forward with respect to the spacer 20). Therefore, a reflective coating may be applied to the inner surface of the reflective bracket 30.

[0025] In addition, the reflective bracket 30 has the fastening elements 31 that fit (e.g., match with the mounting elements 22) when the reflective bracket 30 is attached to the spacer 20. Therefore, when the reflective bracket 30 is attached to the spacer 20, the mounting elements 22 fit (e.g., match with) the fastening elements 31 to surround and fasten the connecting elements 11, so that the positions of the connecting elements 11 are fixed.

[0026] In some embodiments of the present invention, since the terminal element 11 of the light source 10 formed of the filament LED is firmly fixed (e.g., securely fastened) to the spacer 20 via the reflective mount 30, the quality of the lighting device is improved. Furthermore, due to the characteristics of the filament LED, the emitted light is guided (e.g., guided) to be emitted only to the front part of the spacer 20 (e.g., only forward of the spacer 20) by means of the reflective mount 30, thereby improving light efficiency.

[0027] The present invention will be described in detail below.

[0028] As in the Fig. 4 to Fig. 6, the mounting member 22 of the spacer 20 is disposed in the rear part of the inner space 21 and has, at a rear end thereof, a receiving groove (e.g., a bearing groove) 22a recessed in the same shape as the terminal member 11 of the light source 10 so that the terminal member 11 is seated (e.g., supported) therein. Since the mounting member 22 is disposed in the rear part of the inner space 21, it is advantageous that the mounting member 22 mates with (e.g., fits) the fastening member 31 of the reflective bracket 30 attached to the rear end of the spacer 20. Moreover, since the light source 10 fixed by the mounting member 22 is located in the rear part of the inner space 21 of the spacer 20, the light of the light source 10 can be reflected from the inner space 21 to be reflected forward (e.g., to the front side).

[0029] The receiving groove 22a, in which the connecting piece 11 is seated (e.g., supported), is formed in the mounting element 22. The receiving groove 22a is formed to have the same shape as the connecting element 11, thereby restricting the position of the connecting element 11 seated (e.g., supported) in the receiving groove 22a, thereby preventing the connecting element 11 from being moved (e.g., being able to be moved) laterally or vertically.

[0030] Meanwhile, a support projection 22b is formed at the rear end of the mounting member 22 to be spaced from the receiving groove 22a and projected rearward.

[0031] Such a support projection 22b has a function of absorbing pressure generated when the fastening member 31 moves toward the mounting member 22 and excessively presses the terminal member 11 in the case of attaching (e.g., mounting) the reflective bracket 30 to the spacer 20. In other words, when the reflective bracket 30 is attached to the spacer 20, the fastening member 31 moves toward the mounting member 22 and comes into contact (e.g., touching) with the support projection 22b together with the terminal member 11 seated (e.g., supported) in the receiving groove 22a, so that the position of the terminal member 11 in the receiving groove 22a is laterally and vertically restricted, and the position of the terminal member 11 in the front-rear direction is restricted between the mounting member 22 and the fastening member 31.Therefore, the position of the light source 10 is fixed in the spacer 20 and the reflective holder 30, and the light source 10 is firmly (e.g., securely) pressed to an optimal pressure level by means of the support projection 22b. Therefore, even if (mechanical) vibrations occur, the position of the connecting element 11 can be maintained.

[0032] Such a support protrusion 22b may be formed at a position spaced from the receiving groove 22a so as to extend along the periphery (e.g., the circumference) of the receiving groove 22a. The support protrusion 22b may include a plurality of protrusions along the periphery of the receiving groove 22a. However, since the protrusion length of the protrusions may be different from each other, the protrusion is preferably formed to extend along the periphery of the receiving groove 22a. In addition, when the support protrusion 22b has an elongated shape, the support protrusion 22b can come into contact (e.g., touching) with the fastening member 31 of the reflective bracket 30 in balance without being biased (e.g., prestressed) to one side.

[0033] Furthermore, the support protrusion 22b may protrude to have a length equal to or longer than a protrusion height of the terminal member 11 in a state where the terminal member 11 is seated (e.g., supported) in the receiving groove 22a. Therefore, since the reflective bracket 30 is attached to the spacer 20, the support protrusion 22b protruding from the mounting member 22 can support the fastening member 31 when the mounting member 22 is fitted (e.g., fitted) to the fastening member 31, thereby preventing the terminal member 11 from being excessively pressed. If the protrusion height of the support projection 22b is lower than the protrusion height of the connecting element 11, the support projection 22b does not come into (e.g., touching) contact with the fastening element 31 and the connecting element 11 may be excessively pressed by the fastening element 31.Therefore, the support projection 22b protrudes with the same length as the protrusion height of the connecting element 11 or protrudes further than the protrusion height of the connecting element 11.

[0034] Furthermore, the fastening member 31 of the reflective bracket 30 is formed so that a front end thereof that comes into contact with the mounting member 22 forms a plane, thereby allowing a compressive force to be evenly distributed without being biased to one side when the fastening member 31 comes into contact with the support projection 22b. Therefore, since the support projection 22b also protrudes from the periphery of the receiving groove 22a at the same height, the compressive force generated by the fitting of the fastening member 31 with the mounting member 22 can be evenly distributed, and thereby a uniform force can be applied to the portion of the terminal member 11.

[0035] In the above-described lighting device with the linear light source 10, wires (e.g., power cables) W pass through both ends of the reflective holder 30 to be connected to the connecting elements 11 of the light source 10 (respectively), so that the light source 10 can be supplied with (electric) power and then emits light.

[0036] Meanwhile, as in the Fig. 7 to Fig. 9, the reflective bracket 30 is divided into a first reflective bracket 30-1 and a second reflective bracket 30-2 to be arranged on both sides of the spacer 20, respectively. A first fastening element (e.g., a first fastening part) 31-1 may be formed on the first reflective support 30-1 to fit a first mounting element (e.g., a first mounting part) 22-1 of the spacer 20 (e.g., to fit together with a first mounting element (e.g., mounting part) 22-1 of the spacer 20) and to come into (e.g., touching) contact with a first terminal element (e.g., a first terminal part) 11-1 of the light source 10, and a second fastening element (e.g., a second fastening part) 31-2 may be formed on the second reflective support 30-2 to fit a second mounting element (e.g., a second mounting part) 22-2 of the spacer 20 (e.g., to fit together with a second mounting element (e.g.,mounting part) 22-2 of the spacer 20) and to come into (e.g. touching) contact with a second connection element (e.g. a second connection part) 11-2 of the light source 10.

[0037] The first reflective mount 30-1 and the second reflective mount 30-2 may be identically formed and attached to the spacer 20 without distinguishing between the first side and the second side. The first reflective mount 30-1 is attached to the first side of the spacer 20, and the first fastening element 31-1 mates with (e.g., with) the first mounting element 22-1 of the spacer 20 to secure the first terminal element 11-1 of the light source 10. The second reflective mount 30-2 is attached to the second side of the spacer 20, and the second fastening element 31-2 mates with (e.g., with) the second mounting element 22-2 of the spacer 20 to secure the second terminal element 11-2 of the light source 10. Thus, the light source 10 can be attached to the spacer 20 by means of the first reflective mount 30-1 and the second reflective mount 30-2.

[0038] The receiving groove 22a, which has the same shape as the connector 11 of the light source 10, is formed on each mounting member 22, so that the connector 11, which is seated (e.g., supported) in the receiving groove 22a, is restricted in a position, thereby preventing the connector 11 from being moved laterally and vertically (e.g., from being moved). Furthermore, the support protrusion 22b is formed around each mounting member 22 to absorb pressure generated when each fastening member 31 moves toward the mounting member 22, thereby excessively pressing the connector 11.

[0039] In particular, the first reflective mount 30-1 and the second reflective mount 30-2 may be made of a material that allows heat conduction and electrical conduction. In other words, each of the first reflective mount 30-1 and the second reflective mount 30-2 may be made of a metallic material, may be metal-coated, or may be made of a conductive polymer composite material. Therefore, when an (electric) current is applied to the reflective mount 30 in a state where the first reflective mount 30-1 and the second reflective mount 30-2 are attached to the spacer 20 to come into (e.g., touching) contact with the first terminal member 11-1 and the second terminal member 11-2 of the light source 10, respectively, an (electric) current can be conducted to the light source 10.

[0040] In detail, the first reflective bracket 30-1 and the second reflective bracket 30-2 may be fixed to the spacer 20 by means of a fixing member 40, and the fixing member 40 may be configured to allow electrical conduction, and an electric current from an external device may be applied thereto. Here, the fixing member 40 may include a screw and may be passed through each of the first fixing member 31-1 of the first reflective bracket 30-1 and the second fixing member 31-2 of the second reflective bracket 30-2 to be fixed to the spacer 20. Thereby, the first reflective bracket 30-1 and the second reflective bracket 30-2 may be fixed to the spacer 20 by screwing.In particular, the mounting member 40 is configured to allow electrical conduction and receive an (electrical) current from the external device. In other words, when the light source 10 is used in the vehicle, the mounting member 40 receives an (electrical) current from a battery (e.g., an accumulator) for the (e.g., the) vehicle, and each of the mounting member 40, the first reflective mount 30-1, and the second reflective mount 30-2 is configured to allow electrical conduction. Therefore, the first terminal element 11-1 of the light source 10 receives an (electrical) current conducted through the mounting member 40 and the first reflective mount 30-1, and the second terminal element 11-2 of the light source 10 receives an (electrical) current conducted through the mounting member 40 and the second reflective mount 30-2.Therefore, when an (electric) current of a different polarity is applied to each fixing member 40, the current is transmitted to the first reflective mount 30-1 and the second reflective mount 30-2, the first fixing member 31-1 of the first reflective mount 30-1 comes into contact (e.g., electrical contact) with the first terminal member 11-1 of the light source 10, and the second fixing member 31-2 of the second reflective mount 30-2 comes into contact (e.g., electrical contact) with the second terminal member 11-2 of the light source 10, so that the light source 10 is supplied with an (electric) current for emitting light.

[0041] Here, since the first reflective holder 30-1 and the second reflective holder 30-2 are separated and spaced apart from each other, a problem due to a short circuit does not occur even if currents of different polarities are applied.

[0042] Meanwhile, as in the Fig. 7 and Fig. 8, a heat dissipation member (e.g., a heat supply part) 32 may be formed at the rear end of each of the first reflective bracket 30-1 and the second reflective bracket 30-2 to dissipate heat generated by the light source to the outside.

[0043] Therefore, when radiant heat generated when the light source 10 emits light is transferred to the first reflective mount 30-1 and the second reflective mount 30-2, each of the first reflective mount 30-1 and the second reflective mount 30-2 can emit heat to the outside via the heat dissipation member 32 thereof. Furthermore, since each of the first reflective mount 30-1 and the second reflective mount 30-2 is connected to the terminal member 11 of the light source 10, conduction heat transferred through the terminal member 11 is also dissipated to the outside via the heat dissipation member 32.Here, the heat dissipation member 32 may be formed of a plurality of heat dissipation fins, thereby preventing deterioration of durability due to overheating of the light source 10 because the heat dissipation member 32 dissipates heat.

[0044] Meanwhile, an installation member (e.g., an installation part) 23 is formed at a center of the rear end of the spacer 20 to divide (e.g., segment) the first reflective bracket 30-1 and the second reflective bracket 30-2 from each other. A cover 50 is attached to the installation member 23 behind the spacer 20 via the first reflective bracket 30-1, the second reflective bracket 30-2, and the fixing member 40, thereby fixing the first reflective bracket 30-1 and the second reflective bracket 30-2 to the spacer 20.

[0045] Since the installation member 23 is formed at the center of the rear end of the spacer 20, the first reflective bracket 30-1 is mounted on the first side of the installation member 23 and the second reflective bracket 30-2 is mounted on the second side of the installation member 23, so that the first reflective bracket 30-1 and the second reflective bracket 30-2 are spaced from each other.

[0046] Furthermore, since the cover 50 is attached to the installation member 23 by means of the fastening member 40 to cover the first reflective bracket 30-1 and the second reflective bracket 30-2, the cover 50 prevents the first reflective bracket 30-1 and the second reflective bracket 30-2 from being removed (e.g., being able to be removed) from the spacer 20. In addition, the fastening member 40, which passes through the first reflective bracket 30-1 to be fixed to the first side of the spacer 20, and the fastening member 40, which passes through the second reflective bracket 30-2 to be fixed to the second side of the spacer 20, are also configured to pass through both ends of the cover 50, so that the cover 50, the reflective bracket 30, and the spacer 20 can be integrally connected to each other (e.g., one-piece).

[0047] Meanwhile, as in the Fig. 2 and Fig. 9, the lighting device further includes a housing 60 formed to be open in the front-rear direction, which accommodates the spacer 20 and the reflective holder 30 therein, and which has an outer lens (e.g., an outer lens) 61 at a front end thereof. Here, the cover 50 is attached to a rear end of the housing 60, so that the spacer 20 and the reflective holder 30, which are secured (e.g., fixed) to the cover 50, are fixed to an interior of the housing 60. Thereby, the light source 10, the spacer 20, and the reflective holder 30 are protected by means of the housing 60 and the cover 50, in addition to preventing contaminants from entering the lighting device.

[0048] As described above, the lighting device is configured with the linear light source 10 such that the position of the terminal 11 of the light source 10 is firmly fixed (e.g., securely fastened) by means of the spacer 20 to stably (e.g., reliably) supply an electric current. In addition, light emitted from the light source 10 is emitted forward by means of the reflective bracket 30 installed in the spacer 20, and heat generated by the light source 10 is dissipated to the outside by means of the reflective bracket 30, thus ensuring cooling performance.

[0049] Although the present invention has been described with reference to specific embodiments shown in the drawings, it will be apparent to those skilled in the art that the present invention may be changed and modified in various ways without departing from the scope of the present invention as described in the following claims.

Claims

[1] Lighting device with a linear light source, comprising: a light source (10) extending in a longitudinal direction and having the connection elements (11) at both ends of the light source (11) for connection to a power supply, a spacer (20) having an inner space (21) open in a front-rear direction and accommodating the light source (11), wherein mounting members (22) are formed at both ends of the inner space (21) to provide the connecting members (11), and a reflective bracket (30) attached to a rear end of the spacer (20) to cover the inner space (21) and having fastening elements (31) mating with the mounting elements (22) to fix the terminal elements (11) when the reflective bracket (30) is attached to the spacer (20), wherein an inner surface of the reflective bracket (30) is configured to reflect light emitted from the light source (10). [2] The lighting device according to claim 1, wherein the mounting member (22) is arranged in a rear part of the inner space (21) and has a receiving groove (22a) at a rear end of the mounting member (22) recessed in the same shape as each of the terminal members (11) of the light source (10) to provide the terminal member (11), wherein a position of the terminal member (11) fitted in the receiving groove (22a) is restricted. [3] A lighting device according to claim 2, wherein a support projection (22b) is formed at the rear end of the mounting member (22) to be spaced from the receiving groove (22a) and to protrude rearward. [4] The lighting device according to claim 3, wherein the support projection (22b) is formed at a position spaced from the receiving groove (22a) to extend along a periphery of the receiving groove (22a). [5] The lighting device according to claim 3 or 4, wherein the support projection (22b) has a length equal to or longer than a protruding height of the terminal member (11) when the terminal member (11) is provided in the receiving groove (22a). [6] The lighting device according to any one of claims 1 to 5, wherein the fixing member (31) of the reflective bracket (30) is formed such that a front end of the fixing member (31) in contact with the mounting member (22) forms a plane. [7] Lighting device according to one of claims 1 to 6, wherein: the reflective holder (30) is divided into a first reflective holder (30-1) and a second reflective holder (30-2) to be arranged on both sides of the spacer (20), respectively, a first fastening element (31-1) is formed on the first reflective holder (30-1) to fit a first mounting element (22-1) of the spacer (20) and to contact a first connection element (11-1) of the light source (10), and a second fastening element (31-2) is formed on the second reflective holder (30-2) to fit a second mounting element (22-2) of the spacer (20) and to contact a second connecting element (11-2) of the light source (10). [8] The lighting device according to claim 7, wherein each of the first reflective holder (30-1) and the second reflective holder (30-2) is a material that allows heat conduction and electrical conduction. [9] Lighting device according to claim 8, wherein: the first reflective bracket (30-1) and the second reflective bracket (30-2) are attached to the spacer by means of a fastening component (40), the fastening component (40) enables electrical conduction, and an electric current is applied to the fastening component (40) from an external device. [10] The lighting device according to claim 8 or 9, wherein a heat dissipation member (32) is formed at a rear end of each of the first reflective bracket (30-1) and the second reflective bracket (30-2) for dissipating heat generated by the light source (10) to an outside. [11] Lighting device according to one of claims 7 to 10, further comprising: an installation member (23) formed at a center of the rear end of the spacer (20) to divide the first reflective bracket (30-1) and the second reflective bracket (30-2), and a cover (50) attached to the installation member (23) behind the spacer (20) by means of the first reflective bracket (30-1), the second reflective bracket (30-2) and the fastening member (40) to fix the first reflective bracket (30-1) and the second reflective bracket (30-2) to the spacer (20). [12] Lighting device according to claim 11, further comprising: a housing (60) opened in a front-to-back direction, the housing (60) accommodating the spacer (20) and the reflective holder (30) therein and having an outer lens (61) at a front end of the housing (60), the cover (50) being attached to a rear end of the housing (60) to fix the spacer (20) and the reflective holder (30) secured to the cover (50) to an interior of the housing (60).

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