Illumination device with linear light source

Abstract

A lighting apparatus having a linear light source is provided. The lighting apparatus includes a light source extending in a longitudinal direction and having terminal portions at both ends of the light source to be connected to a power source, a spacer having an interior space opened in a front-rear direction and accommodating the light source, wherein a mounting portion is formed at both ends of the interior space so that the terminal portions are seated on the mounting portions, and a reflection bracket installed at a rear end of the spacer to cover the interior space and having fixing portions matching the mounting portions to fix the terminal portions when the reflection bracket is installed on the spacer, wherein an inner surface of the reflection bracket is configured to reflect light emitted from the light source.

Description

Technical Field

[0001] This disclosure relates to a lighting device having a linear light source. Background Technology

[0002] Vehicles are typically equipped with lighting systems to make it easier to see objects in the direction of travel when driving at night, and to notify other vehicles or road users of the vehicle's status. Headlights, also known as headlights, are lights used to illuminate the path of other vehicles ahead of the vehicle.

[0003] These vehicle lights are categorized into headlights, fog lights, turn signals, brake lights, and reversing lights, and are configured to emit light in different directions on the road surface. Under normal driving conditions, the headlights emit low beams, while in special circumstances, they emit high beams.

[0004] Meanwhile, while the overall size of optical systems used in future vehicles tends to decrease, it is difficult to reduce the size of the optical system while still being able to manufacture both low beams and high beams. Therefore, even if filament LEDs are used in vehicles to achieve linear light sources, it may be difficult to fix the filament LEDs in place, and this is susceptible to vibration. Therefore, ensuring a precise light distribution pattern and amount of light from filament LEDs using conventional fixing methods may be challenging.

[0005] The foregoing is intended only to help understand the background of this disclosure and is not intended to imply that this disclosure falls within the scope of prior art known to those skilled in the art. Summary of the Invention

[0006] This disclosure provides a lighting device with a linear light source, wherein the mounting position of the light source is firmly fixed to ensure heating performance and to ensure the amount of light from the light source.

[0007] To achieve the objectives of this disclosure, a lighting device having a linear light source is provided, comprising: a light source extending in a longitudinal direction and having terminal portions at both ends for connection to a power source; a spacer having an opening in a front-rear direction and an internal space therein accommodating the light source, wherein mounting portions are formed at both ends of the internal space such that the terminal portions are disposed thereon; and a reflector bracket mounted at the rear end of the spacer to cover the internal space and having a fixing portion that matches the mounting portion to fix the terminal portions when the reflector bracket is mounted on the spacer, wherein the inner surface of the reflector bracket is configured to reflect light emitted from the light source.

[0008] The mounting portion can be located at the rear of the internal space, and has a recess at the rear end of the mounting portion that is recessed in the same shape as each terminal portion in the terminal portion of the light source, so that the terminal portion is placed therein.

[0009] Support protrusions may be formed at the rear end of the mounting portion to be spaced apart from the seat groove and protrude rearward.

[0010] Support protrusions may be formed at locations spaced apart from the seat groove to extend along the periphery of the seat groove.

[0011] With the terminal portion positioned in the seat groove, the support protrusion can protrude to a length equal to or longer than the protruding height of the terminal portion.

[0012] The fixing part of the reflector bracket can be configured such that the front end of the fixing part that contacts the mounting part forms a plane.

[0013] The reflective bracket can be divided into a first reflective bracket and a second reflective bracket, which are respectively disposed on both sides of the spacer. A first fixing part can be formed on the first reflective bracket to match the first mounting part of the spacer and contact the first terminal part of the light source, and a second fixing part can be formed on the second reflective bracket to match the second mounting part of the spacer and contact the second terminal part of the light source.

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

[0015] The first and second reflective brackets can be fixed to the spacer via a fastening portion, and the fastening portion can be made to enable electrical conduction and to allow power from an external device to be applied to the fastening portion.

[0016] The heat dissipation section can be formed at the rear end of each of the first and second reflective brackets to dissipate the heat generated by the light source to the outside.

[0017] The lighting device may further include: a mounting portion formed at the center of the rear end of the spacer to separate the first reflector bracket and the second reflector bracket from each other; and a cover mounted on the mounting portion at the rear end of the spacer via the first reflector bracket, the second reflector bracket and the fastening portion, thereby securing the first reflector bracket and the second reflector bracket to the spacer.

[0018] The lighting device may further include: a housing formed to be open in a front-rear direction, wherein a spacer and a reflector bracket are accommodated therein, and an external lens is provided at its front end, wherein a cover may be mounted on the rear end of the housing such that the spacer and reflector bracket fixed to the cover are fixed to the interior of the housing.

[0019] As described above, the lighting device with a linear light source is configured such that the terminal portion of the light source is securely fixed by a spacer to ensure stable power supply. Furthermore, light emitted from the light source is directed forward through a reflective bracket mounted in the spacer, and heat generated by the light source is dissipated to the outside through the reflective bracket, thereby ensuring cooling performance. Attached Figure Description

[0020] Figure 1 This is a diagram illustrating a type of lighting device with a linear light source according to the present disclosure.

[0021] Figure 2 It is shown Figure 1 A diagram showing the components of a lighting device with a linear light source.

[0022] Figure 3 This shows the application of wiring. Figure 1 A diagram illustrating an embodiment of a lighting device with a linear light source.

[0023] Figure 4 It is shown Figure 1 The diagram shows the installation portion of a lighting device with a linear light source.

[0024] Figure 5 It is shown Figure 1 A diagram showing the spacer of a lighting device with a linear light source.

[0025] Figure 6 It is along Figure 3 A cross-sectional view taken from line A-A'.

[0026] Figure 7 This shows the application of the fastening part. Figure 1 A diagram illustrating an embodiment of a lighting device with a linear light source.

[0027] Figure 8 yes Figure 7 The diagram shows a cross-sectional view of a lighting device with a linear light source.

[0028] Figure 9 This is a cross-sectional view showing one form of lighting device with a linear light source according to the present disclosure. Detailed Implementation

[0029] In the following description, some forms of lighting devices with linear light sources of this disclosure will be described with reference to the accompanying drawings.

[0030] Figure 1 These are illustrations showing some forms of lighting devices with linear light sources according to this disclosure. Figure 2 It is shown Figure 1 The diagram shows the components of a lighting device with a linear light source. Figure 3 This shows the application of wiring. Figure 1 The diagram shows an embodiment of a lighting device with a linear light source. Figure 4 It is shown Figure 1 The diagram shows the installation portion of a lighting device with a linear light source. Figure 5 It is shown Figure 1 The diagram shows a spacer component of a lighting device with a linear light source. Figure 6 It is along Figure 3 A cross-sectional view taken from line A-A'. Figure 7 This shows the application of the fastening part. Figure 1 The diagram shows an embodiment of a lighting device with a linear light source. Figure 8 yes Figure 7 The cross-sectional view of the lighting device with a linear light source shown, and Figure 9 This is a cross-sectional view showing some forms of lighting devices with linear light sources disclosed herein.

[0031] like Figures 1 to 3 As shown, some forms of lighting devices with linear light sources disclosed herein include: a light source 10 extending in a longitudinal direction and having terminal portions 11 at both ends of the light source for connection to a power source; a spacer 20 having an opening in a front-rear direction and an internal space 21 therein accommodating the light source 10, wherein mounting portions 22 are formed at both ends of the internal space 21 such that the terminal portions 11 are disposed thereon; and a reflector bracket 30 mounted at the rear end of the spacer 20 to cover the internal space 21 and having a fixing portion 31 that matches the mounting portion 22 to fix the terminal portions 11 when the reflector bracket is mounted on the spacer 20, wherein the inner surface of the reflector bracket is configured to reflect light emitted from the light source 10.

[0032] Here, the light source 10 may include: a light-emitting portion 10a, which is formed of a filament-type LED to emit light; and terminal portions 11, which are disposed at both ends of the light-emitting portion 10a for connection to a power source. Such a light source 10 is disposed within the internal space 21 of the spacer 20, and mounting portions 22 are formed at both ends of the internal space 21 of the spacer 20, such that each terminal portion 11 of the light source 10 is positioned within a corresponding mounting portion 22. The spacer 20 is formed of a non-conductor, such that it is not electrically connected to the terminal portions 11.

[0033] Here, the reflective bracket 30 is mounted at the rear end of the spacer 20. The reflective bracket 30 is mounted at the rear end of the spacer 20 to cover the internal space 21, such that light emitted from the light source 10 is emitted through the open front end of the spacer 20 to the front of the spacer 20. Furthermore, the inner surface of the reflective bracket 30 is configured to reflect light emitted from the light source 10, thereby allowing light emitted from the light source 10 to move to the front end of the spacer 20. Therefore, a reflective coating can be applied to the inner surface of the reflective bracket 30.

[0034] Additionally, when the reflector bracket is mounted on the spacer 20, the reflector bracket 30 has a fixing portion 31 that matches the mounting portion 22. Therefore, when the reflector bracket 30 is mounted on the spacer 20, the mounting portion 22 and the fixing portion 31 match to surround and fix the terminal portion 11, thereby fixing the position of the terminal portion 11.

[0035] In some forms of this disclosure, the quality of the lighting device is improved because the terminal portion 11 of the light source 10 formed by the filament LED is securely fixed to the spacer 20 via the reflector bracket 30. Furthermore, due to the characteristics of the filament LED, the emitted light is guided by the reflector bracket 30 to be emitted only in front of the spacer 20, thus improving luminous efficiency.

[0036] This disclosure will now be described in detail.

[0037] like Figures 4 to 6 As shown, the mounting portion 22 of the spacer 20 is located at the rear of the internal space 21, and a recess 22a is provided at the rear end of the mounting portion 22. This recess 22a is recessed with the same shape as the terminal portion 11 of the light source 10, so that the terminal portion 11 is placed therein. Since the mounting portion 22 is located at the rear of the internal space 21, it is advantageous that the mounting portion 22 matches the fixing portion 31 of the reflector bracket 30 mounted on the rear end of the spacer 20. Furthermore, since the light source 10, which is fixed by the mounting portion 22, is located at the rear of the internal space 21 of the spacer 20, the light from the light source 10 can be reflected from the internal space 21 to be emitted forward.

[0038] A mounting groove 22a is formed in the mounting portion 22, in which the terminal portion 11 is disposed. The mounting groove 22a is formed to have the same shape as the terminal portion 11, thereby restricting the position of the terminal portion 11 disposed in the mounting groove 22a and preventing the terminal portion from moving laterally or vertically.

[0039] Meanwhile, a support protrusion 22b is formed on the rear end of the mounting portion 22, spaced apart from the seat groove 22a and protruding rearward.

[0040] When the reflector bracket 30 is mounted on the spacer 20, the support protrusion 22b absorbs the pressure generated when the fixing portion 31 moves toward the mounting portion 22 and excessively presses the terminal portion 11. In other words, when the reflector bracket 30 is mounted on the spacer 20, the fixing portion 31 moves toward the mounting portion 22 and contacts the support protrusion 22b along with the terminal portion 11 disposed in the seat groove 22a, such that the position of the terminal portion 11 in the seat groove 22a is laterally and vertically restricted, and the position of the terminal portion is restricted in the front-back direction between the mounting portion 22 and the fixing portion 31. Therefore, the position of the light source 10 is fixed in the spacer 20 and the reflector bracket 30, and the light source is fixedly pressed to an optimal pressure level by the support protrusion 22b. Therefore, even if vibration occurs, the position of the terminal portion 11 can be maintained.

[0041] Such a support protrusion 22b can be formed at a position spaced apart from the seat groove 22a to extend along the periphery of the seat groove 22a. The support protrusion 22b may include a plurality of protrusions along the periphery of the seat groove 22a. However, since the protruding lengths of the protrusions can be different from each other, the protrusions are preferably formed to extend along the periphery of the seat groove 22a. In addition, when the support protrusion 22b has an elongated shape, the support protrusion can contact the fixing portion 31 of the reflector bracket 30 in a balanced manner without being biased to one side.

[0042] Furthermore, with the terminal portion 11 positioned in the seat groove 22a, the support protrusion 22b can protrude to a length equal to or longer than the protrusion height of the terminal portion 11. Therefore, since the reflector bracket 30 is mounted on the spacer 20, when the mounting portion 22 mates with the fixing portion 31, the support protrusion 22b protruding from the mounting portion 22 can support the fixing portion 31, thereby preventing the terminal portion 11 from being excessively pressed. When the protrusion height of the support protrusion 22b is lower than the protrusion height of the terminal portion 11, the support protrusion 22b does not contact the fixing portion 31, and the terminal portion 11 may be excessively pressed by the fixing portion 31. Therefore, the support protrusion 22b can protrude to a length equal to or greater than the protrusion height of the terminal portion 11.

[0043] Furthermore, the fixing portion 31 of the reflector bracket 30 is formed such that its front end, which contacts the mounting portion 22, forms a plane. Therefore, when the fixing portion 31 contacts the support protrusion 22b, the pressing force is allowed to be evenly distributed without being biased to one side. Thus, since the support protrusion 22b also protrudes from the periphery of the seat groove 22a to the same height, the pressing force generated by the matching of the fixing portion 31 and the mounting portion 22 can be evenly distributed, thereby applying a uniform force to the cross-section of the terminal portion 11.

[0044] In the lighting device with linear light source 10 described above, the wiring W passes through both ends of the reflector bracket 30 to connect to the terminal portion 11 of the light source 10, thereby supplying power to the light source 10 and then emitting light.

[0045] At the same time, such as Figures 7 to 9 As shown, the reflector bracket 30 is divided into a first reflector bracket 30-1 and a second reflector bracket 30-2, which are respectively disposed on both sides of the spacer 20. A first fixing portion 31-1 may be formed on the first reflector bracket 30-1 to match the first mounting portion 22-1 of the spacer 20 and to contact the first terminal portion 11-1 of the light source 10, and a second fixing portion 31-2 may be formed on the second reflector bracket 30-2 to match the second mounting portion 22-2 of the spacer 20 and to contact the second terminal portion 11-2 of the light source 10.

[0046] The first reflective bracket 30-1 and the second reflective bracket 30-2 can be formed identically and mounted on the spacer 20 without distinguishing between the first and second sides. The first reflective bracket 30-1 is mounted on the first side of the spacer 20, and the first fixing portion 31-1 mates with the first mounting portion 22-1 of the spacer 20 to fix the first terminal portion 11-1 of the light source 10. The second reflective bracket 30-2 is mounted on the second side of the spacer 20, and the second fixing portion 31-2 mates with the second mounting portion 22-2 of the spacer 20 to fix the second terminal portion 11-2 of the light source 10. Thus, the light source 10 can be fixed to the spacer 20 by the first reflective bracket 30-1 and the second reflective bracket 30-2.

[0047] A recess 22a with the same shape as the terminal portion 11 of the light source 10 is formed on each mounting portion 22, so that the position of the terminal portion 11 placed in the recess 22a can be restricted, thereby preventing the terminal portion from moving laterally and vertically. In addition, a support protrusion 22b is formed around each mounting portion 22 to absorb the pressure generated when each fixing portion 31 moves toward the mounting portion 22 and thus excessively presses the terminal portion 11.

[0048] Specifically, the first reflector 30-1 and the second reflector 30-2 can be made of materials that allow for thermal and electrical conduction. In other words, each of the first reflector 30-1 and the second reflector 30-2 can be made of a metallic material, metal-plated, or made of a conductive polymer composite. Therefore, when power is applied to the reflector 30 while the first reflector 30-1 and the second reflector 30-2 are mounted on the spacer 20 in contact with the first terminal portion 11-1 and the second terminal portion 11-2 of the light source 10, respectively, power can be supplied to the light source 10.

[0049] Specifically, the first reflector bracket 30-1 and the second reflector bracket 30-2 can be fixed to the spacer 20 via a fastening portion 40, and the fastening portion 40 can be configured to enable electrical conduction and to allow power from an external device to be applied to the fastening portion. Here, the fastening portion 40 may include bolts, which pass through each of the first fixing portion 31-1 of the first reflector bracket 30-1 and the second fixing portion 31-2 of the second reflector bracket 30-2 to fasten to the spacer 20. Thus, the first reflector bracket 30-1 and the second reflector bracket 30-2 can be fastened to the spacer 20 by bolts. Specifically, the fastening portion 40 is configured to enable electrical conduction and to receive power from an external device. In other words, when the light source 10 is applied to the vehicle, the fastening portion 40 receives power from the battery used in the vehicle, and the fastening portion 40, the first reflector bracket 30-1, and the second reflector bracket 30-2 are all configured to enable electrical conduction. Therefore, the first terminal portion 11-1 of the light source 10 receives power passing through the fastening portion 40 and the first reflector 30-1, and the second terminal portion 11-2 receives power passing through the fastening portion 40 and the second reflector 30-2. Thus, if power of different polarities is applied to each fastening portion 40, power is transferred to the first reflector 30-1 and the second reflector 30-2, with the first fixing portion 31-1 of the first reflector 30-1 contacting the first terminal portion 11-1 of the light source 10, and the second fixing portion 31-2 of the second reflector 30-2 contacting the second terminal portion 11-2 of the light source 10, thereby supplying the light source 10 with power for emitting light.

[0050] Here, since the first reflective bracket 30-1 and the second reflective bracket 30-2 are separated from each other and spaced apart, no problems caused by short circuits will occur even if power of different polarities is applied.

[0051] At the same time, such as Figure 7 and Figure 8 As shown, the heat dissipation portion 32 can be formed at the rear end of each of the first reflector bracket 30-1 and the second reflector bracket 30-2 to dissipate the heat generated by the light source 10 to the outside. Therefore, when the radiant heat generated when the light source 10 emits light is transferred to the first reflector bracket 30-1 and the second reflector bracket 30-2, each of the first reflector bracket 30-1 and the second reflector bracket 30-2 can emit heat to the outside through its heat dissipation portion 32. In addition, since each of the first reflector bracket 30-1 and the second reflector bracket 30-2 is connected to the terminal portion 11 of the light source 10, the conductive heat transferred through the terminal portion 11 is also dissipated to the outside through the heat dissipation portion 32. Here, the heat dissipation portion 32 can be composed of multiple heat sinks (32-1) to prevent durability degradation caused by overheating of the light source 10 when the heat dissipation portion 32 dissipates heat.

[0052] Meanwhile, a mounting portion 23 is formed at the center of the rear end of the spacer 20 to separate the first reflective bracket 30-1 and the second reflective bracket 30-2 from each other. The cover 50 is mounted on the mounting portion 23 at the rear end of the spacer 20 via the first reflective bracket 30-1, the second reflective bracket 30-2 and the fastening portion 40, thereby fixing the first reflective bracket 30-1 and the second reflective bracket 30-2 to the spacer 20.

[0053] Since the mounting portion 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 mounting portion 23, and the second reflective bracket 30-2 is mounted on the second side of the mounting portion 23, such that the first reflective bracket 30-1 and the second reflective bracket 30-2 are spaced apart from each other.

[0054] Furthermore, since the cover 50 is mounted on the mounting portion 23 via the fastening portion 40 to cover the first reflector bracket 30-1 and the second reflector bracket 30-2, the cover 50 prevents the first reflector bracket 30-1 and the second reflector bracket 30-2 from being removed from the spacer 20. Additionally, the fastening portion 40 passing through the first reflector bracket 30-1 to fasten to the first side of the spacer 20 and the fastening portion 40 passing through the second reflector bracket 30-2 to fasten 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 reflector bracket 30, and the spacer 20 can be integrally coupled to each other.

[0055] At the same time, such as Figure 2 and Figure 9 As shown, the lighting device further includes a housing 60, which is formed to be open in the front-rear direction, accommodating the spacer 20 and the reflector bracket 30 therein, and having an external lens 61 at its front end. Here, a cover 50 is mounted on the rear end of the housing 60, such that the spacer 20 and the reflector bracket 30, which are fixed to the cover 50, are fixed to the interior of the housing 60. Thus, in addition to preventing impurities from entering the lighting device, the light source 10, the spacer 20, and the reflector bracket 30 are also protected by the housing 60 and the cover 50.

[0056] As described above, the lighting device with linear light source 10 is configured such that the position of the terminal portion of the light source 10 is securely fixed by the spacer 20 to ensure stable power supply. Furthermore, light emitted from the light source 10 is directed forward through a reflective bracket mounted in the spacer 20, and heat generated by the light source 10 is dissipated to the outside through the reflective bracket, thereby ensuring cooling performance.

[0057] Although this disclosure has been described with reference to specific embodiments shown in the accompanying drawings, it will be apparent to those skilled in the art that this disclosure may be changed and modified in various ways without departing from the scope of the disclosure as set forth in the appended claims.

Claims

1. A lighting device with a linear light source, comprising: A light source, extending longitudinally and having terminal portions at both ends for connection to a power source; A spacer having an internal space that opens in a front-rear direction and accommodates the light source, wherein mounting portions are formed at both ends of the internal space, such that the terminal portions are mounted on the mounting portions; and A reflective bracket, mounted at the rear end of the spacer to cover the internal space, and having a fixing portion that matches the mounting portion to secure the terminal portion when the reflective bracket is mounted on the spacer, wherein the inner surface of the reflective bracket is configured to reflect light emitted from the light source. The mounting portion is located at the rear of the internal space and has a recess at the rear end of the mounting portion. The recess is recessed in the same shape as each of the terminal portions of the light source, such that the terminal portions are placed in the recess, wherein the position of the terminal portions placed in the recess is restricted.

2. The lighting device according to claim 1, wherein, A support protrusion is formed at the rear end of the mounting portion to be spaced apart from the seat groove and to project rearward.

3. The lighting device according to claim 2, wherein, The support protrusion is formed at a position spaced apart from the seat groove to extend along the periphery of the seat groove.

4. The lighting device according to claim 2, wherein, When the terminal portion is placed in the seat groove, the length of the support protrusion is equal to or greater than the protrusion height of the terminal portion.

5. The lighting device according to claim 1, wherein, The fixing portion of the reflector bracket is formed such that the front end of the fixing portion that contacts the mounting portion forms a plane.

6. The lighting device according to claim 1, wherein: The reflective support is divided into a first reflective support and a second reflective support, which are respectively disposed on both sides of the spacer. A first fixing portion is formed on the first reflective bracket to mate with the first mounting portion of the spacer and to contact the first terminal portion of the light source. A second fixing portion is formed on the second reflective bracket to match the second mounting portion of the spacer and to contact the second terminal portion of the light source.

7. The lighting device according to claim 6, wherein, Each of the first reflective support and the second reflective support is made of a material that allows for thermal and electrical conduction.

8. The lighting device according to claim 7, wherein: The first reflective bracket and the second reflective bracket are fixed to the spacer via fastening portions. The fastening portion enables the electrical conduction, and Power from an external device is applied to the fastening part.

9. The lighting device according to claim 7, wherein, A heat dissipation section is formed at the rear end of each of the first and second reflective supports to dissipate the heat generated by the light source to the outside.

10. The lighting device according to claim 6, further comprising: A mounting portion is formed at the center of the rear end of the spacer to separate the first reflective bracket and the second reflective bracket; as well as The cover is mounted on the mounting portion behind the spacer via the first reflective bracket, the second reflective bracket, and the fastening portion to secure the first reflective bracket and the second reflective bracket to the spacer.

11. The lighting device according to claim 10, further comprising: A housing with an opening in the front-rear direction, the housing accommodating the spacer and the reflective bracket, and having an external lens at the front end of the housing, wherein the cover is mounted on the rear end of the housing to secure the spacer and the reflective bracket, which are fixed to the cover, to the interior of the housing.

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