WO2007093132A1

WO2007093132A1 - Head lamp

Info

Publication number: WO2007093132A1
Application number: PCT/CN2007/000581
Authority: WO
Inventors: Bing Liang; Ji Lan
Original assignee: Bing Liang; Ji Lan
Priority date: 2006-02-17
Filing date: 2007-02-16
Publication date: 2007-08-23
Also published as: CN100575774C; CN101025254A

Abstract

A head lamp includes a housing (1), at least one illuminant unit (22, 3, 32) arranged in the housing (1), and a support shaft (40) supporting the housing (1). The housing (1) is rotatably supported on the support shaft (40), the at least one illuminant unit (22, 3, 32) is controlled to be turned on and/or off by rotating the housing (1) relative to the support shaft (40). By rotating the housing, the illuminant modes can be changed conveniently, and the head lamp is suitable for nightwork in the field, especially for some special events, such as in mines and diving.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a lighting device, and more particularly to a headlight. BACKGROUND OF THE INVENTION Headlights are generally fixed to the head for personal use, especially for use in mines and in the field at night. At present, the light sources used in the headlights are incandescent lamps, xenon lamps, xenon lamps, light-emitting diodes (LEDs), halogen lamps, high-power LEDs, xenon gas discharge lamps, etc., and the headlights use various power sources, and have dry batteries. , Ni-MH (NiCd) batteries, lithium batteries, lead batteries, fuel cells. The lighting method is also different, there are close-range lighting, generally within lm, usually using energy-saving lighting, such as LED; medium and long-distance lighting, generally within lm to 50m, usually using high-light lighting, such as high-power LED, xenon lamp, etc. Since the power consumption of the high-light lamp and the energy-saving lamp is very different, in order to reduce the energy consumption and prolong the illumination time, it is preferable to use a combination of a highlight lamp and an energy-saving lamp. When using at close range, use energy-saving lighting, and use the high-light lighting unit when using it at a long distance. In order to reduce the volume of the headlight, typically ¹ ^ xenon bulb and LED headlamp on the same side, through the through hole and the LED reflector cup xenon lamp, greatly reducing the reflecting surface of the reflector cup, thereby reducing Reflective efficiency. In addition, because the headlights control the lighting by pressing the 4 ugly switch, sometimes it takes multiple operations to achieve the desired state, and the button switch in the dark is not easy to find, and the user usually wears gloves and other labor protection products, which is even more Increased operational difficulty. Therefore, the existing headlights need to be improved to make their operation simpler and more convenient. SUMMARY OF THE INVENTION It is an object of the present invention to provide a headlight that is convenient to use and does not reduce the light reflecting efficiency of the reflector. In order to achieve the above object, the present invention provides a headlight comprising: a housing, at least one lighting unit housed in the bright body, and a support shaft supporting the housing, wherein A housing is rotatably supported on the support shaft, and opening and/or closing of the at least one lighting unit is controlled by rotation of the housing relative to the support shaft. Due to the large size of the headlight housing, it is easy to operate even in the dark or wearing protective equipment such as gloves. The opening and closing of the lighting unit is controlled by rotating the housing of the headlight. One of the main concepts of the present invention is to select the housing as a switch for operating the lighting unit, while discarding the conventional push button switch. The present invention has designed a corresponding mechanical structure and circuit structure for the above concept. The lower portion of the housing has a downwardly projecting engagement housing mechanically and electrically connected to the support shaft, and the engagement housing is provided with at least one engagement projection/engagement groove on which the engagement projection is provided/ The engagement groove corresponds to at least one engagement groove/engagement protrusion. When the housing is rotated relative to the support shaft, the engagement projection/engagement groove on the housing engages with at least one engagement groove/engagement projection on the support shaft to define the housing to be different from the support shaft On the phase. According to a preferred embodiment of the present invention, the number of engaging projections/engagement grooves on the engaging housing and the engaging recess/engaging projections on the support shaft are four, so that the housing can have four phases with respect to the support shaft. , that is, one phase every 90 degrees. In order to limit the housing to a different phase with respect to the support shaft, the circuit-on-off state of the at least one lighting unit can be changed accordingly, at least one of which is respectively provided on the joint housing with the lighting unit The conductive contact is turned on, and at least one contact terminal selectively connected to the conductive contact is provided on the support shaft as the relative position of the protrusion and the groove are different. According to a preferred embodiment of the invention, the lighting units are two. At this time, the conductive contact includes first, second, and third conductive contacts, wherein the third conductive contact is a shared contact that is connected to both of the illumination units, and the other two conductive contacts are respectively The lighting unit is turned on. The contact terminal includes a first contact terminal and a second contact terminal, the first contact terminal is always connected to the third conductive contact, and the second contact terminal is selectively connected to the first conductive contact or the second conductive contact Or disconnected from both. According to a preferred embodiment of the invention, the contact terminal is a metal contact ball that is connected to the power source and supported on the spring. In the above embodiment having four phases, at this time, three states are generated, the LED light is turned on or the highlight light is turned on or the LED and the highlight light are both turned off. That is, every 90 degrees will change a state. Preferably, the housing is a hermetic housing and also has a lower end cap that holds the support shaft in an opposing position relative to the engagement housing and closes the housing. This is because the housing is preferably kept closed. This prevents the risk of arcing when changing the lighting mode. The lighting unit is one of a strong light lamp and an energy saving lamp or the same as a strong light lamp or an energy saving lamp, and the lighting units are respectively disposed on opposite sides in the casing. In this way, the advantage of not reducing the efficiency of the reflector can be achieved. Preferably, the lamp holders of the lighting unit are respectively connected with a damping device, the damping device comprises a spring, a pressure plate and a pressing ring, and the spring provides a buffer between the lamp holder and the pressing ring and the pressing plate. effect. By setting the damping device, the failure rate of the lighting unit caused by vibration can be effectively reduced. The damper device simultaneously serves as an electrical connection between the illumination unit and the conductive contact. The headlight of the present invention has the following advantages: Since the housing is rotatably mounted on the support shaft, the housing can be rotated as needed, the illumination mode can be changed, the conductive contacts of the illumination unit and the contact terminals provided in the support shaft Turning on and off, controlling the lighting, because the size of the housing is larger than the button switch, it is easy to touch, and the rotating housing is convenient, and it is easy to replace the lighting method even with gloves. In addition, when the lighting units disposed on the opposite sides of the casing of the present invention are the same, one of the lighting units can also be used as a reserve, which reduces the frequency of disassembling the casing, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS Specific embodiments of the invention are described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a headlamp of the present invention; Figure 2 is a schematic view of the circuit connection of the headlamp of the present invention. DETAILED DESCRIPTION OF THE INVENTION Referring to Figure 1, there is shown a cross-sectional view of one embodiment of a headlamp of the present invention. headlamp

100 includes a housing 1, an illumination unit housed in the housing 1 (in this embodiment, a high-intensity lamp 2, an energy-saving lamp 3, respectively), and a support shaft 40 that supports the housing 1. The housing 1 comprises: a housing body 10 at the upper portion for accommodating the high-intensity lamp 2, the energy-saving lamp 3, and a coupling housing 130 at the lower portion for mechanically and electrically connecting with the fulcrum 7 shaft 40. The housing body 10 has openings 101, 102 at each end, which are closed by transparent baffles 111, 121. In the housing body 10, the high-light lamp 2 and the energy-saving lamp 3 are respectively accommodated on opposite sides. Thus, the light emitted by the highlight lamp 2 and the energy-saving lamp 3 can be emitted through the transparent shutters 111, 121. In order to maintain the sealing property of the casing 1 on both sides, the side end covers 11, 12 are covered on the outer sides of the baffles 111, 121. Sealing rubber rings 112, 113 are respectively disposed between the side end cover 11 and the baffle 111, and between the side end cover 11 and the casing body 10. Similarly, a sealing rubber ring 122, 123 is disposed between the side end cover 12 and the baffle 121, and between the side end cover 12 and the casing body 10, thereby forming a cavity 110 sealed at both ends. A strong light 2 and an energy saving lamp 3 are provided in the cavity 110. The glare lamp 2 includes a lamp holder 21, a bulb 22 mounted in the lamp holder 21, and a reflector cup 23 threadedly connected to the lamp holder 21. The direction of the opening of the reflector cup 23 is aligned with the damper 111, thereby generating the glare lamp 2. Light is transmitted through the transparent baffle 111. The glare lamp 2 is also provided with a damper device 5, which includes a spring 51, a pressure plate 52, and a pressure ring 53. The position of the pressure plate 52 is limited by the shoulder 103 formed in the housing body 10. One end of the spring 51 is in elastic contact with the socket 21 of the high-intensity lamp 2, and the other end is pressed against the pressure plate 52, and the lamp holder is driven by the spring 51. The position of 21 is limited by a pressure ring 53 disposed on the pressure plate, and a spring 54 is provided between the pressure ring 53 and the high light lamp to provide electrical contact. At the same time, the damper 5 constituted by the spring 51, the pressure plate 52, and the pressing ring 53 serves as an electrical connection between the glare lamp 2 and the corresponding conductive contact piece described below. The energy-saving lamp 3 includes a lamp holder 31 and a plurality of light-emitting diodes (LEDs) 32 evenly distributed in the lamp holders, and the LEDs are "pre-transparent baffles 121 so that the light generated by them can be transmitted through the transparent baffle 121. The lamp 3 is also provided with a damper device 6, which includes a spring 61, a pressure plate 62, and a pressure ring 63. The position of the pressure plate 62 is limited by a shoulder 103 formed in the housing body 10, and the lamp holder 31 is driven by the spring 61. The position is limited by a pressure ring 63 provided on the pressure plate. The spring 61 also provides electrical connection. Meanwhile, the damper 65 composed of the spring 61, the pressure plate 62, and the pressure ring 63 serves as the energy saving lamp 3 and below. The electrical connection means between the respective conductive contacts. The joint housing 130 projects downwardly in the lower portion of the housing 1, which in the embodiment has an inverted U shape. The joint housing 130 is used for The support shaft 40 is mechanically and electrically connected to the support shaft 40. In the present embodiment, the joint housing 130 is provided with at least one engaging projection 131, 132 on which the support shaft 40 is provided corresponding to the engaging projections 131, 132. At least one engagement groove 431, 432. Of course, in another alternative At least one engaging groove is provided on the joint housing 130, and a corresponding at least one engaging protrusion is provided on the support shaft 40. In this embodiment, four engaging projections are provided (the other two are not shown:), and Four engagement grooves are provided (the other two are not shown), The four engagement grooves are spaced from each other by 90 degrees. Thus, when the engaging housing 130 is rotated relative to the support shaft 40, the engaging projections can be engaged with the engaging recesses in four different phases. That is, the joint housing 130 can be in four different phases with respect to the support shaft 40. The conductive housing 130 is provided with at least one conductive contact that is electrically connected to the illumination unit 2, 3. In this embodiment, the number of the conductive contacts is three, respectively, the first conductive contact 20, and the second The conductive contact 30 and the third conductive contact 230. The support shaft 40 is provided with at least one contact terminal selectively connected to the conductive contact piece according to the difference in position of the protrusions 131, 132 and the grooves 431, 432, in this embodiment The middle contact terminals are a first contact terminal 420 and a second contact terminal 430, respectively. As shown in FIG. 1 and FIG. 2, the third conductive contact 230 is a shared contact that is connected to both of the illumination units 2 and 3, and the first conductive contact 20 is only connected to the strong light 2, and the second conductive The contact piece 30 is only connected to the energy saving lamp 3. The first contact terminal 420 is always connected to the third conductive contact 230, and the second contact terminal 430 is different, which is selectable according to the change of the four different phases of the joint housing 130 with respect to the support shaft 40. The ground is connected to the first conductive contact 20 and thus to the highlight 2 or to the second conductive contact 30 and thus to the energy saving lamp 3 or both. These contact terminals 420, 430 are connected to a power source, in this embodiment a metal contact ball supported on a spring. The housing 1 also has a lower end cap 13 at its lower portion that holds the support shaft 40 in a relative position relative to the joint housing 130 and closes the housing 1. A sealing rubber ring 134 is disposed between the end cover 13 and the support shaft 40. The support shaft 40 is provided with a passage 411 through which the power supply line passes. The top of the support shaft is provided with a longitudinal passage and a vertical passage for the vertical longitudinal passage, respectively forming a seat. The holes 423 and 433 are respectively provided with springs and metal contact balls, so that the first contact terminals 420 electrically contacting the third conductive contacts 230 are formed, and the first and second conductive contacts 20 and 30 are selectively The second contact terminal 430 is in electrical contact. Referring to Fig. 2, there is shown a schematic diagram of the circuit connection of the headlamp 100 of the present invention, and at the same time, three operational states of the headlamp according to the present invention are illustrated. 1 and 2 show a state in which the highlight lamp 2 is turned on and the eco lamp 3 is turned off. The headlight 100 is powered by the power source 7. The second contact terminal 430 connected to the positive pole of the power source is in elastic contact with the first conductive contact 20, and the first conductive contact 20 and the pressure plate 52 are connected by wires, and the pressure plate 52 is a circuit board. The spring 51 located on the other side of the pressure plate 52 is electrically connected, and the high-light lamp 2 and the pressure plate 52 are electrically connected by a spring 51 having a shock absorbing effect, so that the high-light lamp 2 is connected to the positive pole of the power source; The first contact terminal 420 and the third conductive contact 230 are in elastic contact, and the third conductive contact 230 and the pressure plate 52 are connected by wires, and are located on the pressure plate and The side pressure ring 53 is electrically conducted, and the pressure ring 53 and the high beam lamp 2 are turned on by the other spring 54, so that the high beam lamp 2 is turned on with the negative electrode of the power source. At this time, the power source 7 supplies power to the highlight lamp 2, and the highlight lamp 2 operates. Referring to Fig. 1 and Fig. 2, the state in which the energy saving lamp 3 is turned on and the highlight lamp 2 is turned off will be described. When the housing 1 of the headlight 100 is rotated about the support shaft 40 and rotated 180 degrees with respect to the position shown in FIG. 1, the projection 131 and the projection 132 are interchanged with each other, that is, the projection 131 and the recess 432 are engaged, and the projection 132 and the recess are concave. The groove 431 is engaged, and the other two protrusions are also interchanged with each other. When the housing 1 is in the rotating phase, the elastic second contact terminal 430 connected to the positive pole of the power source is disconnected from the first conductive contact 20, and is in elastic contact with the second conductive contact 30. At this time, the power of the strong light 2 The supply is disconnected. The second conductive contact 30 and the pressing plate 62 are electrically connected by a wire, and the pressing plate 62 is also a circuit board, and is electrically connected to the spring 61 located on the other side of the pressing plate 62, and is electrically connected to the energy saving lamp 3 through the spring 61, thereby saving the energy saving lamp. 3 is connected to the positive pole of the power source; the third conductive contact 230 is always in elastic contact with the first contact terminal 420 during the rotation of the housing, and the third conductive contact 230 is electrically connected through the wire and the pressure plate 62, and is pressed with the pressure plate. The pressing ring 63 on the other side is electrically conducted, and is connected to the negative electrode of the energy saving lamp 3 through the pressing ring 63. At this time, the power source 7 supplies power to the energy saving lamp 3, and the energy saving lamp 3 operates. The following is a view of the state in which both the highlight lamp 2 and the energy-saving lamp 3 are turned off. The housing 1 is rotated 90 degrees around the support shaft 40 about the rotational phase shown in the position of FIG. 1 (in this case, the 1 state produced by the clockwise rotation and the counterclockwise rotation is uniform), then the protrusions 131, 132 and the other two The recesses (not shown) are engaged, and when the housing 1 is in the rotational phase, the elastic contact between the second contact terminal 430 and the first and second conductive contacts 20, 30 is disconnected, that is, the supply is strong. Both the light source 2 and the energy-saving lamp 3 are powered off, and both the highlight 2 and the energy-saving lamp 3 are stopped. According to the above analysis of the four phases, three kinds of work, it can be seen that by rotating the casing 1 relative to the support shaft 40 to be in different rotational phases, the working state of the headlight 100 can be controlled. That is, the opening and closing of the lighting unit in the headlight achieves the object of the present invention. It will be understood by those skilled in the art that the number of pairs of protrusions and grooves can be reduced or increased, thereby achieving more phases and achieving more adjustment of the operating state. The groove may also be a slot extending in the circumferential direction of the support shaft 40 so that the protrusion can be rotated within the slot to facilitate the rotation of the housing. In addition, it should be understood that the support shaft 40 may be part of a bracket that is attached to a head or other portion of the person's head, which may be a known safety helmet or similar fixed structure. Or by the restraining structure on the well-known headlight, the restraining structure can also be supported and fixed on the handlebar of the bicycle or motorcycle. Since the structure is well known, the details thereof will not be repeatedly described herein. It should be understood that the voltage supplied to the lighting unit can be adjusted, as can be achieved by means of series-parallel resistance on the circuit boards 52, 62 which also serve as platens. Of course, other electrical components that regulate the current can also be provided on the circuit board. In the present invention, the foregoing glare lamp and the energy-saving lamp may also select only one of them, for example, the two glare units are respectively disposed on opposite sides of the casing or the two energy-saving lamp units are respectively disposed in the casing. On both sides, the other lighting unit is used as a reserve. Of course, it is also possible to include only one lighting unit in the housing. In addition, another set of push switches can be added between the power source and the contact terminals to control the power supply of the first and second lighting units to suit the night work, thereby avoiding the inconvenience of replacing the lamp head at night. Alternatively, you can set the main switch on the power supply to cut off the power when you don't need the headlights. The housing and the support shaft are relatively rotatable, and the housing is in a certain rotational phase by the engagement of the recess and the protrusion, so that the first and second illumination units are in different working states. Of course, other devices can also be used to realize the relative rotational phase of the housing and the support shaft. For example, a groove can be provided at the conductive contact to make the contact ball of the elastic contact terminal and the groove engage, and at the same time mechanically and electrically conduct. The role of the connection. In addition, you can also use the horseshoe tool changer of CNC machine tools. Of course, the power supply can also select multiple types of power sources, such as battery packs. The above description is only the specific embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention. The figure has been described

Housing 1 high light 2

Energy saving lamp 3 high light damper 5

Energy saving lamp damping device 6 Power supply 7

Housing body 10 side end covers 11, 12

Lower end cover 13 opening 101, 102

Shoulder 103 cavity 110

The shutters 111, 121, the glue cartridges 112, 113, 122, 123, 134 engage the housing 130 projections 131, 132

First conductive contact 20 lamp holder 21

Light bulb 22 reflector cup 23

Second conductive contact 30 lamp holder 31

Light-emitting diode 32 third conductive contact 230

Support shaft 40 power line channel 411

First contact terminal 420 ^孑 L 423, 433

Second contact terminal 430 groove 431, 432

Spring 51, 54, 61 pressure plate 52, 62

Elastic pressure ring 53, 63 headlights 100

Claims

Claim

A headlight, comprising: a housing, at least one lighting unit housed in the housing, and a support shaft supporting the housing, wherein the housing is rotatably supported by the support On the shaft, the opening and/or closing of the at least one lighting unit can be controlled by rotation of the housing relative to the fulcrum.

2. The headlamp according to claim 1, wherein the lower portion of the housing has a downwardly projecting engagement housing mechanically and electrically connected to the support shaft, the engagement housing being provided with At least one engaging projection/engaging groove on which at least one engaging groove/engaging projection corresponding to the engaging projection/engaging groove is provided.

The headlamp according to claim 2, wherein the engaging housing is provided with at least one conductive contact respectively electrically connected to the lighting unit, and the branch 7|shaft is provided with at least A contact terminal selectively connectable to the conductive contact strip as the relative position of the protrusion and the recess are different.

The headlight according to claim 3, wherein the lighting unit is two, and the conductive contact comprises first, second, and third conductive contacts, wherein the third conductive contact is The common contact is turned on by the two illumination units, and the other two conductive contacts are respectively connected to the two illumination units.

The headlamp according to claim 4, wherein the contact terminal comprises a first contact terminal and a second contact terminal, wherein the first contact terminal is always connected to the third conductive contact, The second contact terminal is selectively connected to or disconnected from the first conductive contact piece or the second conductive contact piece, and the contact terminal is a metal contact ball supported on the spring that is connected to the power source.

6. The headlamp of claim 5, wherein the housing further has a lower end cap that maintains the support shaft in a relative position relative to the engagement housing and closes the housing.

The headlight according to claim 6, wherein the lighting unit is respectively a strong light and an energy saving lamp or one of a strong light or an energy saving light, and the lighting units are respectively disposed in the shell The sides of the body are opposite each other.

The headlight according to claim 7, wherein the lamp holders of the lighting unit are respectively connected to a damper device, and the damper device comprises a spring, a pressure plate and a pressing ring, and the spring provides a The buffer between the lamp holder and the pressure ring and the pressure plate.

9. The headlamp according to claim 8, wherein the damper device simultaneously serves as an electrical connection between the illumination unit and the conductive contact.

10. The headlamp according to claim 9, wherein the housing is a hermetic housing.